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MISC-68416F47

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Document:	Venus IBOX.MCR
Order Number:	MISC-68416F47
Revision:
Pages:	82
Original Filename:

OCR Text

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word width is now

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microfield (back up to 50 bits).

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This is for the new utrap/SII timing fix.

sicrofield encoding
ng mode' er Jing in WMI
vs. Unaligned operand
field.
OPVALID 1t

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crect MJYL TROJ(R1), RO scoreboard problem.

nodeTM encoding to UH

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encodings to

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=RAF now.

urrcc2y fiel

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s minotr chandges to ufields as the design progresses.

Reassign

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s
;

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history

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31-Nctober-80

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the

VENUS

Ibox

this

Microcode

usable

chacks

nisc.

updated

tne

ibox

effort

into

Initial

infocs
three

CPC

valid.

Ibox

design.

11s5c.

files:

definition

are

now

default

for

bhranch

encodings.

enius,

PPEALS

Clackemeyer.

fields

SH.CUND

validity

and

the new

¥CTL/
4

clear

any

fix.

signal d

Start of
‘listory.
microcodsz ar=a.

for

specs. are more complete
lefipition up to date

adaed

with

<DON
up

from

coasidered

rev

R
split

25-August=1980

jes

macros
encoging

pbring definition

iinor documentation

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u¥isc

[uox
vel IT & [TT
to bring microme

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version

explicit

idded

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367

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fie

oort

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Page

locations

sincse
ajor

15:02:16

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than
witl

Much documentation was

encoding.
all

and

encodinys
IBAOXDEF,

Ibox

and

loads

Liu.

CPC

from

microcode,

meager

Changes

checks

is
to

Added
on

TROXMACRO,

microword.

the

(by

the

and

File

tHooks

Branch_True.

memory

request

now under microword control.
"WRITE.VA.READY"

fields.

.DEFAULT

and microword length are changed.
most

removed,

their predecessors.
the Ibox microword spec

RLUG Unwind Done signal

encodings

source encoding

changed/added/deleted/modified.

combinations

ight,

CPC

conditionally

coding

generation.

Added

the

UMISC

for

macro

area

field.

IBOXCODE.

formatted

and

@«

[

e~~~
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sot o

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cfinition

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Page

Fields

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e Ne
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e
el el el e el
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50N
e O g ey
RENT
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e Ne N6

nye

Tbox

;
33

;

Used

;

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UnkEN/

validity

BEN

checks

PRl

]

;

hran ch

Ibox

enable.

outpnts

the

MUXes

are

OR*d

witn

NEXTL<T7:0>.

;

’

incodl ng

7
;

UBEN

MUX<2>

MUXL2>

’

;

Quad+Octa

CIy<2>

ORAM

MENMCOD

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/>,

2, VALIDITY=<.¢

and

iccess

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typs2

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A=
IDITY=<,
. VALCT
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Operand

Context

1f we know operand
is fuad or Octa

dacide

Control

Field.
an

Ifork,

whether

NEXT/

should

fields

are

Ifork.

wWe

ignored.

Ifork

(NOP).

;(Q+U)

LEN2G/>,

;No branch

03>

CEQLICN20

CTL/=<12:10>,.0

FAULT=<TFNFK

CTL/NOE

RFGISTE

IMMEDTATE
QUAD=1

Ifork

TFORK

fork

Asrc+(

;Tiork

Vsrc+Write+((Read+dodi
fy)*BWL)

sTfork
slfork

if
if

READ*RMWL
Quad

’

s Ifork

DAMMIT

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1F0RK=06,VALIDITY=<.EQLCCUS ON/2,<UBEN/NDBEN>I>

A*BUL)

MICKRT2

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befinition

153

V3.13

Tbox

Rsal

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Page

«PAGE

3152

;156

;

icrotrap

based on

Control

Field.

unalignment

‘iables

1§

microtran

cycle,

1EXT

cycla

;

;155

$157
3138

€14:135>,

0RFAULT=CIITIAE

CTL/INHIBITY>

2159

;160

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unal.

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3162

the

cycle.

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CTY

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«BOLECHCE />

;163

3164

JPERA

inal.

TQLTCIFURK

DRY>1,

;165

«CHLTCUBEN/S>

;166

«CQLICMEF

;167

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;168

INDIRECT

fetches

/5 ,KVCFYCUNDITIONALD
T,

;]6?

;

any

cycle

other

for

unal.

Unal.

(Rn)

and

BWMUX

oparand.

2170

3171
»172

;172

;

Control

;174

microfields.

$175

;

176

3177

the

Z-input

adde

inputs

MUX

3178

»179

dictated

the

SEL/

L/7ZERDD>

;180

;
.

Amux
+4

;181

;

-4

;182

scted

;183

matche

;184

;

Ditto,

;185

;

Ditto,

J1R6

;

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from

TUP

module

x4,

from

via

fisld

cycle

#bus

match

cycle

kbus

match

sed

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take

flush.dbus

utrap)

5187
;188

BEMUY

SEL/HOLDVA>

»189
5190

3191
;192
5193

7194

3195

;
;

Adoer context as
dictated by CTX.CTL field
CPC from TDP module.
This is only used for

;

string

continue

flushes,

Ibuffer

data

Dmux

;

IMD

data

Yot

;

clocking

2196
»197

from

Dmux

Emux

select

the

function

LATCH.

i1nnibit

from

2116

V3.73

=--

VENUS

Ibox

1-M1Y

@
;

;
-

Control

;

for

dafault

ucode

ory

for

i=1ld

raestrict

list

nmefarences,
must

either

L/LUNTRECT
.

;

EFAULT=KCTY

CTL/LRANY

J
;

L
LJ
L]

3212
;213

tontexts

;

(in

lemory

Bytes)

Ref.

DRAM
t
o

;214

3215

3216

3217

3218

;219

;220

221

3222

3223
3224

;

address

control.

;

3225

3226

SEL/TSTREAM>

3227
;228

HAUD is extracted from Tstream<bl> in
rzqgister is being addressed by a s

ister

;
;

is
Oie.

JGPP

;
EXPLICI

)
7
7

number

address

handle

ried

handle

autoincrement

RLOG

CGPR

address

multiprecision
GPR

addre

mode.

unwinrd.

CTX.CTL<K1:0>
UNPACK.CTLK1:0>

incremented
operands.
Used

Microcode

Page

(L2)

7-MAY-54

Tbox

[

inition

beginning
KT

MODE/

282283440
s

;

control.

UPVALTD

will

even

for

scoreboarding

actually

This

Yes

specifier

specifisr

This

specifles

how

JK
c

and

Control.

OPVALID

purpcses.

regi

CTL/SIGN

tend

if
o

driven

onto

Microcode

Page

;

)

;

ory

7=-MA

15 3¢

serinltion

Zeal

crocode

7
;

zmory

contionally

control

field.

based

This

Dyam

ipitiatas

sometlin

lat

DEAN

DRAM

port

MEM

memory

request.

CUMISC/>,<UMTSC/WRITE,VALRFADY>D>
RIT

virtual,

alignment

WRITS
°

0 r

virtual,

aliqament

page

checks

che

are

page

don

check.

lone.

checks

ALY
IFITZ

virtual,

a
sInitiate

3311

;Tnitiate

;313
READ

for

will

write

virtual,

checking

for

write

READ

virtual,

kinag

for

read

for

read

;Iunltiate

RTAD

virtual,

checking

;Initiate

RFAD

virtual,

page

virtuel,

page

access.

gsperated

xFAD

acces

acce

OPAGE=0C

m2mory

request

IRFPORT

the

;

using

Mbox

request

corre sponding

the

UFe

problem

port

occurs,

set

using

atus

virtual

data

problem

memory

check.

corresponding

status

3325

microtrap

IBFPORT

the

IBUF

probl

addre
iR, if
problem

bit.
VA

the

virtual

data

the

Mbox

problem

address,

IBUFFER,
problam.

if
if

bit.

;312

checking

YENUS

The

nisc.

=ncodlngs

the

Tbox

Microcode

microword,

15C/

¢ RULT=<

siur

;

GIT

ation

ANDL.OF

E45,<MCE/WRITE_V_NOPAGE>],

Used

wuring

flus

e
S
o

stal)
tall

enable
until

uring

hei

conditional

"IE.FLUSH.LD,CECY,

cancel"

fetcne.

issued

indirect

cacne

Ne
ne

Used

longword

zeserved
a
e
ne

handle

Seae

stall

“quad

the

target

RESP

microflow.

enable

the

ISTALL

received,

IBUF

MCAs

condition

due

modify~”

type

GPR

operand.

signal

output

logic,

the

partiy

check

dependent.

passed

and

tnrough

it
is

Jsed

the

used

the

BMUX.

next
during

uPC.
flush

and

ricroflows.

ssaerts

Oram

Dram

=
FA

(i.2.,
Fef

Lor

=(4src
1P

the

Fault.

done”-handshake

flag.

Sinc

load

logic.

cause

Ebox.

for

branch

reading

Mode

enable

being

This

BRANCH=-

the

TX
Pop

latct

control

i1l

will

the

"dp-port

branches

from

listed

abort

Addressing

branch

Ibox

TwmD,

IMD

computed
VALLD

slices.

"diagnostic

-box
some

elear
VALID.

some

and
CC

fU¥,

cycle

detected.

sertion
hit.

ERANCE

second

§
1

clear

operations.

tpe

the

@)
CPC

VIRA_VA+4,

¢)

receives

adaress
is

s
t

operations

NOT

FE53P

the

conditional

branch

all

Used

logic.

during

iritiate

logic,
and

micromacliine

[RUF

this

the

VIBA_VA+4,

to:

bits,

control

bits,

operations

Na'Na

Juox

command.

te:

control

valid

TD/WORMAL>II>

TL®

valid

Ibox

“SA/ISA

<CYCLE

perations

ush

sianals

ID/>,

asserts

/73A/15)

signals

lter

Jsec

W
L
a

) L

DD
a

L
L

e
Ne
Ne

Fbox

THaf

) W W

unti!

some

naa
o S5
W=
& o

TOLLCCYCLE

Stall

]

e
o

NeNeNE Ne e Ne Se

F/>,<MCE/ARTTE_Y_¥CdK>11,

Vsrc).

and

See

unconditionally.

Dram
is

Ref

set

for

macro-branch

<>
OP

0).
MEM

info

REQ
FA

IFF

“

BilX. HCK

crOz

(CT)

7-4y¥-84

ecicroword

vefinition

15:02:186

Feal

v3.73

VENUS

Fields

3374
3378

2275

;

3377
;378
379

CYCLE

Field

iventify

the

cycle

10/=<423415, JOKFAULT=CCYCLE

jon-Tlork

NORKAL=0

5387

current

3361
;382

[YDFXF

;Index

8NAFU

;383

EEANTOW

1D/NGRMALD

cyc

Tfork

Ifor¥

Vanilla

entryv

entry

microword

flavored

ifork

entry

microword

;384

;385

e N

Used

;388

;386
3387

Ibox.Ston

3391

UNSTALL/=<43:433,
. DEFAULT=<UNST2LL/NORMAL>

microtrap

routines

command

the

override

Uxiud

SMSPEND

TSTALL

cus

either

the

Ehox

bit.

;389
7390

2392

NOEMAL

sDbserve

all

;393

UNSTALL=1

sunstall

111

signals

Istall

due

in
the

the

NFXT

above

wmicrocycle.
conditions.

;394
396
3397

$398
7399

740t
;401
3402

[

3395

Used

DTAGNOSTIC

MODEZ

ONLY

BOLD/=<44:44>,,05FAULT=<IE

:OLD/KOHOLO>

NOHOLD

sAllow

HOLD=

sPrevent

to
BFFER

its

from

thing

shifting

;403

404
;405
2406

DIAG

UNSTALL/=<45:45>,
. DEFAULT=<DTAG
;410w

normal

s0verride

any

UNSTALL/NOE>
stall

effects

existing

Ibox

stall

condition

3408
3409
;410

;411
3412
;413

;414
;415

[

;4017

The

MAB¥

bit:

set,

CPU

clocks

stall

ths

MARK/=<46:46>, DEFAULT=KMARK/NIFF>
OFF=0

shormal

oN=1

;Micro-breakpoint

state

encoding.

T0ish.

Thox

Microcode

Page

Hicroword

VENUS

Ibox Microcode

Page

SRRy
Mo omao

Thox

Fields

Real

Definition -

V3i.75

15z

T-¥AY-b4

1u(02)

This

fiel!

for

additional!

signal

sissert

on &

MN=1

tre

Ihox uword.

tne

;

generation

"Tndex

INHINTT

lamediate

modeTM

VALID

JOPBUS.PARITY=2,.Validit

bit.

signal

1C<bmuy Sel/>,
/>,
1C<Amux
1L<¢Bmux Sel1/>,

Se=

che
t

tile

PAR

S21/>,

glC<smux

ZalL<hmuy

(the

1i<Anux 3ei/>,

«Ang

;

A1s50,

BaVALLD).

Ao N

=l @ ~

R AR

encodings

475, DEFAULT=KUMNISC2/NAPS>
;%o

miscellaneous

@ e Ne Ne ne Ne Ne N6 e Ne Ne e Ne N Ne N N Ne Se Ne

MICRAZ

signal

CHETM

Sel/>,

this

same

genarates

signal

<Amux Sel/Zero>],

<2mux Sel/Dmux.ibf>11,
<Amux Sz1/Zero>3,
<Bmux Sel/fDmux.lIad>13,

<Pmux Sel/Zero>1,

wmore

p >

<Amux S21/GPR>12

enable

UPBUS

partity

the microcode restrictions at the

for

generated

end

information.

e validation of 2 scoreboard entry iff one is
;Force
; pending ror the ootimized destination of the current macroinstruction.
idity=<.Andl.<qli<ney

VMode/>,<Reg

glf<Cycle

Mode/NU>I,

I4/>,<Cycle

Ld/BOAFOxK>1I>

;Tuhibit ¢t
validation of a scoreboard entry.
This can only be
I
is interded to inhibit the too-zarly entry of an optimized
into

the

scoreboard.

« &N
=H,.Val1dity=<.0RC
«EglL<Emux

FORCE. 3E

UIEAP.CIP=T7

the

verforms

;

sidentifi

Microword parity.
LNOTing

This

<Amux

Sel/Zero>1l,

Zqli<Bmux

<Bumux

Sa2i/Dmux.Ind>13,

JANdC. FQYL<Bmux

<Awux

Sel/Zero>1,

FqlC<Amux

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9
;

IB{X.MCH

IBOXMACRO.MIC

(ICRNZ2

PAGE

RO
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WIHOXMAC

.TOC

"Revision

6.3"

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JRav

Date

Jme—

30-nNov=-83

V3.73

March

Revision

TIRIT
Added:

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7=-Jan=-83

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MODE

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22-Dec-381

flushes,
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10-vovembar=£20

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BOX

2nd

Tryggua®s
he

STOF

Since

effect of

Wrong

address

targe t

which

ave

some documentation.
H
ST
SB
VALID & ENA

¥
Rn
PAT

macros

for

JUNSTALL (TINHIBI T STALLS
the PA ACK from the “g"

ISE

tructions

the Mbox now issue
allows CPC to'be

(N+0) microflow.
index
specifiers had

yad

operands

VALI D

sxcept

fix.

Clarified
adced:

timing

to
Tnis

that

mode.

for
the

advantage

CPC

remembered

s
with

take

microword

'FBUOAKRD

ne ver

Page

(which

would

example

have

doesn”t

cycle

clobb

I D

BOA,

1 SA.

mentation

uwords

conu

Ne
N

NeNs
~

ion

destina

f ollo wina

TFORK

the

fixes

the

CYCLE

GPR

IFNRE

nl(Rn)+,

@(kn)+,

CYCLE

the

microword.

microword,

and

CRNJE(R n)+

problem of an
autoimc,
GPR,

should

17-Jun=-83

2jieve bly

(for

Jch

gross
hoti

rit

2nd

nth

check

micro

ciose

page.

not

ord

unalignad

cta

the

flows.

power=-up

Fixed:

for

zligne

sad*HL

disgusting
and Modify

[30FFER"

14-0ct-82

and
rite

that

stall

then

the
from

the

bad

problam,

unalignad

BF
T

Nodify

datum

Res

from

could

nandle

ence
was

was

which

being

for

spurious

microwords.

buffer,

hut

flow

longuwords,

caused
0

#aster

Adouble

parity

location
second

This

buqg:
All Quad
operands) were

cleared.

he.

returning
an

Ifork

from

microword.

decrementing

the

will

optim ized
which is source

Since

C ¥

ites

(Run)+,

This

GPR

would

have

it.

Page

TBOK.C

THOXCHODE

LMIC

evisi

899
;891

»892

;

£0"

;893
7894

;
;

7895

Ifork

)

’

}

now

3898

;

;899

3990

entry

;

tranches;

3903

;

3906

2907

;908
3909

;

3910

teral

;

ich
7

;913

context
itional
135

all

the

uwords

the

trom

tihe

and

flows.

in
CPC

flow.

C1TM

macros

not

Istall
pranch

the

doing

microtrap

all

Ifork

com

scheme.

microwords.

uword

of:

Conditional

(b)

Thuf.

S~#literal.

unt

first

load

generated
on

(a)

Branches,

vector,

the

(PC)+

read*buw

the

entries

10/

ncodings.

flushes

and

source

changes
mirror

ased

coued,

flisterv.

existing

design.

inor

CYCLF
durine

1ns

;

the

request

branc

;

from

Istream

RAF

appropriate
the

Ibox

;

REQ

.to

data

(PC)+

set

to
to

enc

ncode

(PC)+

vector.
the latching of DkAM and Thuf
rrors is contingent upon the
assertion of Ifork

5912

Iu/

for

bBranches

Dmux
was

the

conditional/comput

Valid"

Train

macro

Lbuff

continuously
new

from
F

wicrowords.

DRAIN

;902

;

assert

conditional

macros

the

;

7904

T1"TM

TMMEDIAT®

7901

;905

macros

qeneration

;Hr) )

7897

911

Dmux

current

hardwar

documentation
stable

chang

hardware

definition.

up
«

(PC)+[Rn1]

;

7927
3928

MICKOZ
General

g
P

;930

;933
3934

3935

»938

;

3940

;

;939

[Rn]

)

j3
;

;

3941

7942
3943
;944

7
;
;

1-MAY-84

Vi.73

mode

where

EFC

and

modification of

moditied.

Zach

microcode
of

the

I
>

0Ek

structure
routines

broken 1nto

handle

individual

particular

AcesyafmsosSmeeeyreTensvs mSEAYeEe
v
v
v

FE=Y
v

—mmmmmmnee

3949

;

—————————

3950

5951

7952

;

3955

;
;

3957
;958
2959

3960

;961
5962

|
|

spc.
|
routinel

|
|

spc.
routine

|
|

spc.
routine

1
|

|
!

spce.
routinel]

L S S TR S

€ €L { S L L

L I S LS

S S LS Ol

; The Ibox micromachine supports & microtrap i
anism to civert the microflow to a trap service routine.
; There are 2 types of microtra;
those that are
reactions to Zbox commands and those that are reactions to
3 unaligned mewory addresses during operand specifier handling.
The gbox-command microtraps do not return to
;

;

the point

AR KRR

R AR

intecruption.

TR AR ARAA AT AR

Unalignment microtraps

F T AT S AR

T X

ARAAT

either

AN T AR TH

ECX KRS

do not return.

bkex

BTN

Region

.TO
.

956

starting in a microword vector called "Ifork".

“

;

Page

specifier:

3954

routi

operand

;

2953

“icrocode

[ile contains the antirety of Tbox microcode.
Two otier files are necessary: IBDXDEF.MIC ana
411C.
They respectivaly contain the hardware definition and microcode macros for this microcode.

;945

;
;

Tbox

the DRAM Execution Peint Counter, with the exception

3946

7947
3948

Description”

;3 correspondence hetwean

3936
3937

escription

IL that specifier was not an
FORK signal signitiss a completed evaluation of an operand spacifier.
dex-mode specifier, the 170
50 signifies
a completed servicing of the operand.
There is a l-to-1

7
H
5

1N(0O2)

General

JHTC

3929

3931
3932

THOX NS

TEDXCODE

R T

mnemonics

define

anything else

RT R A

Assignments"

T/TFORKL

the

that

regions

memory

JREGIDYed.

must be

AR AT

E R AN AN AT T

for

forks,

A AAAAF R AN TXAXNE

utrap vectors,
AT

Ifork

;
;

Jtrap vector (addresses are
bulk of Ibox ucede

Vector

«SET/TFORE

«SET/FATHLOW=000
SLET/MATURICH=QBF

forced)

and the

Microcode

Ibox

VENUS

Page

~
N

bit

operand

various

<5»

the

first

asserted

specifiasr

types

unused

locations

mi crowords

this

the

P C.

hranch

instructions.

Ifork

tne

are

every

EOA

However,

filled

with

operand

cycle

and

special

specifier

bit

<4>

encodings

>am
o
cos

Jump=-dots.

GOTN
R

e
e
T

Conditional

e S —————

;

VANTLLA

DATY,

;

CIRR.CUNDCGMP.BRI

CPC

VALTD,

CPC

CONTEXT

VALID,

REQ

FROM

Unconditional

VANILLA

;

AMUXEC+IRUFFER

Branch

YA_target address, **~do
on CC VALID herex**

not

stall

first

ref.

Granch

;
DATH,

UP-PURT,

VA_target

address,

make

;

<INCUND .EBR]

b 1
b e
10 N B

;
VA_TGPR,

“NAOLE
BRANCE

ey e

‘URK

GNTN
.

;

Computed

Aranches

Vi_target

address

e
N

RMODE

RESERVED

mmmm—mnseg
CYCLE,
;

R+(MV*RN),

V+W+REH*BWL,

NPRUS PARITY
(N+0) AND

VANTLLA

VANILLA
IF

3070

VALID,

C12.2.CONDCOMP.BR]

GOT3

CPC

JBVALID

D D

CLEAR

e b

VA_ANMUXPC+IBUFF

e B

CHECKING,
ACCESS,

heRNI
P

[fork

this

can

;

cycle,

continue

(read*modify)*q0

done

Asrc

7
7
3

ADDRESSING

CVCLE,

CIRL8,J0NT.RAFD

FAULT,

CUNPREDICTABLE]

allow

;

Tbuf

and

Dram

routine.

asserted

exist

TFORKHIGH

VA_BMUXPC+IBUFFFER
QAN
U
LN
O

Jrm m

CLeAR

Ne
e Ne Ne

oRv-Rve

[r-gregragr:

N N8
e

G5 90
WA
OO MO 0
0

D
DKL

coutains

O
&

N N6 AT A= e N6 Ne

[FRCRV-RVRV RN: RU- V-V Ry
G
OO

N Ne Ne N0 Ne N6

hormallv,
this

D&
=

b
e

N6 Ne Ne

b
e

N6 N N

vector

FURKLUW,

e Ne

T
e
Y

B e

e
et
e

e N N6 NE

N e

0,070%,80 1c,

Mo N6

0DA,

1,0602,8002,091C

Och,

bt 1

0,0742,8010,802E

11s

VVYY
w0 T

Ne Ne Ne

e
b

N Ne N6

e
e

S oo

Ne Ne Mo

0,078C,8030,

0EF,

1,0742, 4010 ,802E

PRy
o

180XCHD

latching

for

the

TH30X.
T50XC0D

MICROZ

02)

The

Vector

Ifork

-g4

V3.73

VENUS

Tbox Microcode

Page

®©

;10

;1
;

;
boMEN

A4+RM*AL,

(Rn)

REU,

;
e

;

PARITY

UNAL

CHECKTY

MEM

REQ,

Iran
1f

this

cycle

can”t

unaligned

done

common

fetch

(PC)

CUNPPFDICTABLE]

add.,

cycle

routine

goto

0¢9,

1,07C0,C002,4540

op9,

allow

(Rn)+

Done
DITIONAL

0C7,

0,07C2,8804,0040

latching

'ITH

cycles

?
$

CONTEXT,

;

R+ (MY*RN) ,

AND

(0+0)
S,0762,A010,0020

;

DATA,

0D7,

Dram

;

B, NM.ATNCI

,
IFORK TF R*BWL,
PARITY CHECKING,

and

>_TGPR+CTX,

Tbuf

0,0702,8601C,0010

ACCESS,

3o NM,IMM]

Set

opvalid

Read.

;

7
@(2n)+

oce,

CYCLE,

JA_L3UFFEP

AFLE

TRAP

PVALID

T*URK

1RANCH
1,07c0,C010,4

6010

DATA,

DITIONAL
ASLE
OPBUS

0D6,

the

cycles
GPR,

get

the

BR24,0041

VANTLLA

Done
bump

fQ,

FA 2P }
PARITY
IF

UNAL

A+BM*AL,

;

;
;
0P,

2
;

A+K*BYL,

(Q+0)

;

CIB.NM.FRT]

AND

;

"(xC);
VA_address

from

Istream

ind.

add.

[80X.NC

{ICRUZ

TBOXCUDE.AIC

The

1N(D2)

Ifork

710

«PAGE

0cs

Vector

15:62:16

Vi.73

=--

VENUS

Tbox Microcode

)

»1

0C8,

0,07CU,C864,4540

;

;1
310

’
;

710
;108
510

;
;
7

;1083

;

;1084

31085

;

=(&kn)

;1086
51087

0ng:

;1088

31090

;

;1069

0b8,

0,0702,8

;

=(PC)

CUNPREDICTABLE]

allow

;1091

»10

ncse

)

iVl

;

;10

YA_ICPR+IBUFF

310

0C5,

0,07CH,Co1

DNAL

;

;1100
;1101

SOTN

0p5,

0,u7C0,C010,C5490

RM*AL,

0C3:

;

;
i

0P,

’

A+R*BuL,

ACCESS,

H
;

;1114

VA_TG

#1115

CONDITIONAL

‘

B*D(PC)

;

;1113

;

;1118

;1120

;

71119

sS40

ACCESS,

;
UNAL

[CNRK

;
;

OLTIONAL
AUXPC+IRG
B

;

-;
;
;

BRANCH DN (Q+J) AND
GOTD CIB.NM.FETY

;1117

0,07

uP,

CIRLNMJFRTI

;1108
31109
;1110

31116

0c3,

AND

;1112

(Q+0)

#1107

;1111

RFQ,

0DS:

31106

REEML,

;1099

1102
;1103
31104
51105

MEM

A+RV*AL,

31098

;

VAL

310

B®D(Rn)

;

W~D(Rn)

Tbuf

and Dram PE

latching

Page

1CKRUL

MICRD
A

31121

;1122

71124
1123

@
s

firad
#1133

15:02:16

I3.73

V3.73

VENUS

K IF

GNTO CI
0cC1:

’

i’
)

L~D(Rn)

3
3¢

0c1,

0,07C0,C

001,

0,07C0,C010,¢

)

oc4,

0,07F4,8052,2059

Ne N

e e

14
0b4,

0
C
G,07¢4,8030,1059

l
i

1136

P age

3
;

1135
®

Ibox Microcode

¥ i
JITIONAL
VALTD IF

31129

" ;1130
40 ;1131
;1132

1
4
~AY=-8

0032

%‘.1'2"1
51128

& i
LU3,

.PAG

;1125
1126

V(U2

TN
Ay 100

&£

1BCX. MC
bl

BOXCODE .MIC

;¥

2B*D(PC)

5,0603,2
N

[

NCH
1N
Ne

NENe

[

4
44

UNPACK

(Q+0)

PARLITY

(0+0)
AND

R+ (HVXRND,

OPBUS,

ACCF

CHECKTNG,

[

KEQ
D

ool ol

OGO
BN

st sl

MEM

ol sl

PC+LEUFFER

~ e

FOR

DO S5O0V YCO
O WA
=

N N N

S0C
R

e e

i A

CYCLE,

e
D

O N N

VANILLA

o
S ek b e S
0N
AWK

e e

Ne Ne e N6 N N6 Ne Ne Ne e N N6 Ne S N Ve e ne Ne NG N e Ne Ne NG Ne N6 Ne Se N NE

Rl
e e e
e

SE Ne NG e Se

5,0603,20

N e e Ao Mo

[R———

N N e

opcC:

YLYUS

@¥~n(rc)

RLAD(Rn)

RLTMD(PC)

S*gliteral

STMfliteral

Microcode

TEOXCUDE.MIC

The

1H(02)

Tfork

15:02:16

T=rny¥=-84

V3.73

VENUS

Ibox

Microcode

Page

Yector

Cinl

4,0202,8UlC,1ED8
CeCl
;

0,0702,801C,0010

’
;

It
To

Cfatall

is ok
allow

to make this VANILLA CYCLE,
Tbuf and Dram PE latching

4,0502,801C,0010

............................ ;

ADDRESSING

FAULT,

$TA

;

60T

;

e e
NN
N

4,050%,001C,
0010

allow

Cfatall

CIP,P,JUNT.RAFT

allow

and

Dram

latching

Dram

latching

Dram

latching

[fatall

Ibuf

allow

Index

Ibuf

CPC]

allow

index

GOTN

CRnl

and

Cfatall
fbuf

and

TUNPREDICTABLZ]
Tbuf

and

Oram

P£

latching

4,0502,801C,0010

indax

(Fn)

VA_Koa address, split on
io index multiplication

context

OFA,

index

0FE,

0EA,

index

;

(ORI

0EB,

008,

VANILLA CYCLE
GOTO CIELR
[RENERERERENEN

6,85C2,8002,0288

0Eg,

2
2
0¥9,

4,0502,301c,0010

G324

GNTU

ke kit

SING

e i

ok 7

EAULT,

CYCLE,

;

CIR.B.JUDT.RAF]

Index

(PC)

CUNPREDICTABLE]

;

allow

Ibuf

and

Dram

latching

’

ANC@

GOTO

CTRAUM.INDEX]

SING

4,0502,801¢,0010

T
L FAET
3. JUN

=(PC)

Index

N
S

2,85C2,6864,0288

CONTEXT,

=(Rn)

FAULT,

CUNPREDICTABLE]

0E8,

index

2
2

7
GPR=-CTX,
Hilk CYCLE, VA_IGPE
INHTETT SET SCORESCARD VALID,
CONDITIAKAL FA OF MEM KFQ,

260

MICRDZ

allow

Ibuf

and

Dram

latching

Tbox

Page

Microcode

Ne
he
N6
Ne
e

one e NE

the Istream of the useless

Drain

immediate

draining

see

data,

index

@(Rn)+

indax

@(PC)+

if we

are done

all.

CANDITIONAL
YANCH

1IN

VA_4 bytes from the

DOP

CONTERT,

TI3.NMINDEX]

MEM

Ibuffer as the BOA

RERQ,
e

DATA

)

Ne N N N NeSNENe

TRNFESD

e
NeNe
Ne
e

Ne
NeNe

(PC)+

index

Ne e

CYCLE,

VA_

S=T

VALID

[MHTBTT

SCARERCARD

Ne e Ne Ne

6,657 2,8820,

R 6
Be

0,85C2

NeNe Ne

(R SENES]

o S A e Ne N e e NE NS NG N N Ne e N e Ne N N N Nw S Ne

Ne NS N

Se N

No N

(An)+

B~D(Fn)

index

sext(Tbuffer byte) + Rn as

yA_

the BOA

4*D(PC)

y2_sext(Ibuff.
the

+ CPC

make

BOA

index

byte)

A*D(Rn)

sext

804

(Tbuffer word) + Rn to make

MICRrOZ

The

Ifori

LPAGE

5
6

0¥3:

02)

7=-MAY=84

15:02:16

2,85C2,8B010,8288

VENUS

;

Ibox Microcode

Page

U~U(PC)

VA_sext(Ibufi.

;

BUA

;

31
JF3,

V3.73

Vector

word)

CPC

make

the

;

332

GOTO

CIRLNMJINDRK]

314

index L*D(Fn)

;

30ARD

333
39

0r1,

2,85C%,8012,0288

VALID,

Tr
COTN

Ibuffer

l.uw.

make

the

BOA

;
7

MEM

VA_

REQ,

CIBNMJIN

;

41
42

0F13

Emm=sassmesemiacssasimas
st e na s ;

343

ARD

L
28

2,85C2,

0,8288

GOTO

VALID,

DATA,
ON

INDTITINNAL

0F1,

index

L=D(PC)

;

VA_

;

BOA

(Thuffe.

l.we)

CPC

GPR

make

the

;

CIB.NM.INDEX]

;

index

QABR~D(Rn)

513"

VA_sext(ibuff.

313

indirect

add.

byte)

the

make

the

BUA

713

1354
31355

BF4,

2,85F4,8032,204C

31356
;1357

31358

0F4:

3
£

;1360
11361

;
;

;13862

CREBUARD VALID,

21363

0F4,

index

#1359

;1364

@B~D(PC)

VA_ sext(ibuff. byte) + CPC
indirect add. of the BOA

make

the

;

31365

;1366

0Ti:

;

1367

B2A

1368

VA_TGPR+IH

CVYCLE

aF2,

3137
;1372

QW~D(Rn)

;

31369
31371

index

FB0ARD

VALID,

I¥ UNAL IND,
NUTY JINDIR

;

VA_sext(ibuff.

;

ipdirect

;

;
7

add.

word)
of

tne

GPR

BOA

make

the

T60X.NCH
iOXCDNE .

THOX
.

;
;

IBOXCO2DE

Vv3.73

9YLNUS

index

sext(ibuftf.,
add.

indirect
JRERDR RD

UNAL

tne

BOA

CPC

make

VED,

GPR

the

make

the

BOA

AL~D(PC)

(ibuff.

index
FAULT,

l.w.)
d.

CPC

the

to make

the

BOA

4,0502,801C,0010

Cfatall

allow

Tbuf

and

Dram

latching

;

------------ 7
FAULT,

4,0502,801C,001¢

S5”§literal

’

0FC,

2,85F4,8f

ADDRTSSING
0EC,

Fha LN DIREC

indirect

0F0,

l.w.)

add.

VALIO,

word)

IND,

index

Page

QAL*D(Rn)

VA_(ibuff,

0F2,

index

Hicrocode

AW~D(PC)

rect

Tbox

MIC

index

5~4¢literal

Cfatall

;
;

allow

Tbuf

and

Dram

latching

the

1N(02)

Tbox

Page

Microcode

R S
e e e

words

for

fil

dzbugging

purpo

the

Unused

these

locations

can

R
R

NeSe

Ne
Ne

NeSe

Ne
e
e
©
e Ne

KEKD

4,000%2,501C,00FD

XXXXKAXNK:

]

(]

0FD,

OFE,

NS e

0,0002,801

0,0002,801C

Ifork.

atter

These

are

prototype

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debug.

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7

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for

unaligned

an indirect address.

the

ipterrupted

Cycle

OP.VA LATCH in cycle

address.

trap

and

microflow.

TMATM

to 0C:,

POPs back

kead*dL.

the

¢fmAD

with

same

and tne reference

a READ for an operand,

do2s

word or

cycla,

longword context

concitional

IFORK

and

command

UNALIGNED.
says

1fork if A+P*0BWL.
Cycle "A"TM will cause an Ifork, and
cycle "TM will be a microword on the Ifork vector.
We
will! microtrap out of cycle "B" to 1 of 2 microwords: we

Ne e Ne

the

unaligned

operand

context

LONG,

the

mnaligned oparand

context

¥ORD.

ND:

wicrowors

complete

the

second

and we

trap

Both of

address pushzd

{ifork

Valid}

ELS £

the

microstack

tnen {Push

{Push

the

is:

address

of microword

When we
to

"B"}

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tiwe,

reference,

e e

eranc

return from

location

not

the

the second-reference,

Ifork

Tfork

number

particular

Ifork

cycle

was not

microword if

true

Ifork

we will return
at microtrap

Valid was

fails

and

"B"TM

BRANCH

possible
type

anag use

trap will

cycle

(Q+0)

"t"s,

specifier.

the low

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the

ACCESS

takes

For

What?

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WH
NH3e

trap

will

out

address "B" to

IN=07:

unaligned

addres

Not(read=(w+L))

unaligned

interrupted microflouw.

to 0ld

Flow?

Yes.

opsrands

LATCY

contains

the

addre

which caused

locations 00: to 07:.
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Pop

*1,ONG unaligned operands
i*WURD unaliagned operands

which handles

3 bits of

vector,
handles

AND

each of

Point(s):

:re?

true.

microword "AYTM in trap #2 above, except that this
REMD reference*bWl.
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index into the microtrap
The microtrap flow which

Valid

(Read*B8WL)

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Sometimes.
No
.

the unalignment trap.

those

reference.

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7
;

the

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e
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s [

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complete

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microtraps:

not

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7

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reference.

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the

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hardware

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pushes

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[fork

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will

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join

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first

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3rd VA

decrement)

the

to get ready

will now point

first longword,

the

write

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for

sequence

for

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start

the

write

unaligned

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microcode

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152

V3.73

VENUS

Tbox

Microcode

Page

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PR P
R
PR R

;

19
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unaligned

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longword

continues

hera,

XXX

nava

XNENF

read

the

first

R RS

longwords.

#3.
et

i
;

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j§

done.

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Ne
Ne
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N6

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microtraps

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address

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string

data

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start

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macroflow

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address

start
FLUSH

CPC

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Take

the
the

Ibox

from

address

WBUS

and

it.

locked

CPC

and

GRe

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kolling

back

inst.

resume

normal

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the

occurance

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e

NS
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QUIS
AR

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flows

Lf¥ter

servicing

LUG

UG
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will

unwinas
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disable
the

and
and

the

stalls

microtrap

start

terminate

cue

SUSPEND

condition

string
string

RLOG

fetch,

goto

and

operand

RLOG
of

to
set

processing.

the

first

"First

Bit"

entry.
or
a

back

the

Ibox.Stop

command.

jump-dot

microword

for

Ifork

for

start

fetch.

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159

760

161

Entry

Locations:

iee

above

chart.
B
B T
R
P
P
R

L L]

N N Ne Ne e N N Ne Ne e Ne Ne

Fbox

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T-¥AY-84

15:02:16

V3.73

VENUS

Ibox

Microcode

Page

Ne
N

Unwind
B

RLDG
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microtrap

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loop

used

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N
Ne
N

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OO OO
AN WNFOOD
T
U & W
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This

things,

Jump-dot

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RAF

for

other

LOOPING.

N6 N6 N4 Ne Ne

;

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T T

Flush
A

From
A

WBEUS

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&
A

Load
A AN

cue

CKC

microtrap

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service.
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TN AT

AT TN FTARRXAKRRAARRNN
AN

N N6 N0 NS NS

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1N8(02)

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0CE,

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W6 N6 e

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TBOXCUDELMTIC

02,

4,985F,8025,1809

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this
B

word
R

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R
T
s

executes

when

the

sianal

R R

asserted

the

Tbuffer,

Console.

allow
Ibhuf

since
ref,

ibuffer

memory

Master
**x

shift

don”t
but

references

Reset

forces

can
no

stall,

NOTE

that

occur
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;

1854

;

1858

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;

TA A A RR I

Conditional

A A A AT A AR T N AT XXX AKX XX

EBranches

are
a

e
A
NN

abortel

not

occur.

R EK XA NN

and

Unconditionazl

and

Ifork
until

the

second

microword

reference,
ang

and

goes

reference

know

second

the

branch

branches

calculates

the

Then

codes,

UNCONDITIONAL

(e.g.

BEranches calculated

and goto Iu.u,COND.BR:, which will
CC VALID.
When this cycle unsuspends

reference.

condition

Conditional

Branches

the

third
false

associated
that

target

microword

cycle
tue

test

hardware

the

branch

address

below

first

reference
reset

will

and

fires

does

occur,

fires

the

second

IFurk.

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branches
test

work

identically

made

the

conditional

branches.

The

branch

CCs.

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input:
YA

has

the

target

address.

&
m oW D
* @ > ©® ®© @0

dranch_true

Target

Outputs
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Abhort

stream
the

continue

NN
N

X
o

Computed

reference

first

PSL

Ifork

the

first

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the
2

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address on
stall term

;

PR R

1852

N S

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initial

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the

fetched.

target

stream

current

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Istream.

FUR

VALTID

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JWTEXT

INHIBTT

FLUSH
4

&
4,

LOAD

CPC,
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3TALLS

RFu
4,

LOAD

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STALLS

FROM

TEF-PORT,

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—o 2

Nene
NN

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391

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TSUF

COND

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T 038, 0,U85E,8025,1610

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1

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i
1

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1

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i
i
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Stall

here

until

CcC

VALTD,

fire

first

reference

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Abort this and previous
if not branch_true

Mbox

command

485

BOX . MCH

MICRD2

TEOXCODE JMTC

V3.73

=--

VENUS

Ibox

Microcode

Page

he N6 N Ne N N6 Ne N N6 Ko Se N6 Ve Ne Ne e

2 PAGE

Rn"

;
;

Flow(s):
modle

1908

A1l

ooerands,

other

Asrc

operands

(Quad+0cta)*(Read+Modify),

were

handled

cycle

continue

here.

Tfork.

1909

1316

scription:

i911
1912
1913
1914

Isrc, we
or 3 CPRs
;

Eentry

Point(s):
I6.N#.RN%

1915

set
to the

branching

-Asrc,

(Q+(0)

AND

finish

passing

the

ACCESS.

1916

917

;

Input:

1918

The

addr

latch

has

the

GPR

address.

1919
1920

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EAERXRA

RNk h &

192

1522
1973

1924

;

Since

1925

;

somwe

AN A

the ‘I1fork
branch

R A AT A

uword

target
R

AT AT AR XKL TR AT AR

did an

words

AR AR

are

Ifork
not

A KKK

Vsrc

L AT AR XXX TR

Write

AR NN

((R+M)*BWL),

used.
IR

TAXRE KR

;

ASLC*EWL

THRKKRRK R

N N6 Ao Se Ae %o Mo N6 Ne N6 Ne

1906
1907

SING

FaAULT,

2eBaJDAT.RAFD

1935

=10

e Ne N6

1936

N6 e Ne N0

N6 Ne Ne N8 e N NN N

1905

1941

NG Ne VNG

017, 1,0082,5204,1339

15:02:16

II R
e
e
e

1938

1945
1946
1947

NeNe

0,0102,801C,00G10

190
1

)

010,

T=-MAY-84

°n

SERVED
GUTO

;

All

RAFs
the

loop

TEE

here,

keeping

the

set.

emmmmmmmemememams;
ADDRESSING FAULT,
;

CIF.B.JDOT.RAF3

AsTCT(040)

;
Read*(Q+0)

1939

VALID

FNA

OPBUS

1940

PR(FREVADD+1),

PARITY

;
;

1342

CTAl

CHECKING,

;

;
We

are

done

Quad

operand

Quad

operand

;

1943
1944

=111

1548

1349
1950

j1ll===ccmmcm
e mccncm e ===;

(UPVALYD, VA_GPR(PREVADD+1),
ABLE
OPBUS
PARITY CHECKING,
SCOR#HBOARD CHECK,
£
=

QUAD,

CIRUMLANJGACTAT

Modify*(Q+0)

;
;
7
7

are

done

RAF

bit

e
N

VENUS

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finish

Microcode

Octa*Rn

Page

Read+mod.

specifier

202,1

*»

034,

3.73

02:1¢€

IBOX.MCR
TBOXCODE

1ICRO2

«4TC

IN(U2)

15:02:16

V3.73

VENUS

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(PC)+

(PC)+"

SRR

“Mode

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this

specifier.

specifiar

The

[fork

one

cycle.

(Q+0)

microword

handled

Read*BWL

‘s

AL EARR

roint(s):

18.8MM.IMM2,
s

the

branching

OPVALIOD

NeNENE

ACC

The

Ifork

microword

R+(MV*RN)

(Q+1)

AND

Input:
ent

;

]

0002,%088,962

AND

following:

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ntry

eccccmmm—— e

have
AR

the

send

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eesmeccccem

iata

LRSS

e ea-]

MK,

the

longword

Ebox.

data

the

Ebox.
)

ASTC*BHWL

’

PC-CTX,

OFVALID,

IFORK

;

Write*3WL

010

Ne e
Ne

Quad

longwords

from

Read*(Q+0)

N6
A6 N6

;

Wwe

Ne Nk Ne

1,0002,E0610,103C

Astc* (G+U)
Swallow 1 or
the Ibuffer

are

done

025,

Modify *BWL

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Ne Ne N

;

FAULT,

ADDRESSING

FAULT,

27,

0,0102,891C,0010

NeNe

MO NS

IDNToKAFDY

VEU

TIRE..JUDTKAF
]

GEite*(Q+l)

;

;
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[

Ne N6

-------- Semmassmsesese=l

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VENUS

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Microcode

e
e

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7¢ta

immediate

operands

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e
e
e

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immediate

mode

operands

continue

here.

=101

=111
rakrw

cEwxw

OPVALIL,

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NeNe

continue
A

PER=R

mode

EAES

(INE

ISTNENENTNEY

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e Ne Ve Ne

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fcta.

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2
e

20406

2641
2042

2043

2045
2046

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2044
N

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e

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N6

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2031

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06F,

0,000 2.t

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2

Quad
here

and

Octa

Immediate

Asrc”s

finish

Page

ILOX .
TBOXCODE

1N(02)

T-May=-g4

(Bn)+

a(kn)+"

V3.73

“(en)+

and

n)+
E

nese

microwords

specifiers

are

sith

GPR

context

lcad

with

handled

VENUS

Ibox

Microcode

least

cycles.

for

(Kn)+

and

GPR

the

right

thing

and

join

8(%n)+

the

original

;

Page

for

the

The

Ifork

@(Rn)+.

general

fetch

;

ipecified

IGPR

(now

PREVADD)

has

contents

AHRKETAT

context

;

32068

RRA

KRR

;

22070

;2071
32072

RAP

2073

RE*AL,
IF UNAL

(Q+0)

;2074

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32075
,0080,C382,

;

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52069

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5
i
32067

AND

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;
;

Trap

ACC

yoto

common

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32076

cycle

fetch

;

+R*PUL,

unaligned

routine

add.,

if needed

;

NM.FET]

32077

32078
;20179
72080

TIRJNM.AT

72081
32082

BOARD

CHECK,

;2083

NTEXT

32084

041

;2085

-4

;
4

;

IND,

PAP

INDIRECT.FETY

UNAL

;

cycle

unaligned

add.

[SENTRYNN SRS
=
COCo DS
OO0 OO
& D® o
N A J = O RN

I1=1Ay=84
«PAGE

Literal

V3.73

VENUS Thox Microcode

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;

short

Literal

operangs

Futry

Point(s):

come

her=

they

are

not

Read*bWL.

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;

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brenching

(@+0)

AND

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literal

;
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first

;

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was

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0,0102,801C,0010

GOTO

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0,7102

GOTO

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033,

0,0102,801C,0010

;
7

memcmm—mme—e———ae

ADDRESSING

FAULT,

e e

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ADDRESSING

krite*DWL

CIB.R.JDOTCRAFT

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e
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;

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1

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ll

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e
FAULT,

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;
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ee e

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;

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e
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I

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;

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Ucta*Pead

Literal

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specifiers

continue

here

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O
Sw

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7
;

;

Longword

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done

Page

"iwe

Tbox Microcode

Axk xR

Ttork

@(Rn)+

into

Cycle”

(Fn)+,
X

E AT

IR ERAKKTERKKN

R AR

cycles, incl. the
in
+ Context or IGPR
IG
vicroword s below decrement IGPR
oded
with

uword

specifi

indexed.
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and

[

VA,

Ne N

044,

4,0074

hA,

;

iPR(PREZVADD)

;
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*REEr

get

will
f

the
R

1ted

e e

Ne Ne

%6 N

N6 Ne

N6 Ne N Ne e Ne

Se Se

Indexed

index

value

(Rn)+

TGPF.
e

s o

-=-

;
;

Indir

JEERATXRRNTRREXXAS AT I AT E R AL AR AR AN

;

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common

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;

the

GPR

;

’

;
;

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;

microw

initiated

indirect

the

0,000

fetch

X *

the

indirect

microcode.

jirsct

loaded

modsz.

directly,

wait

fetch

and

for

IMD MDRESP on the

indirect

will

contain

the

branch

’
[RaN4.
T

;

nan,

must

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7

2tc.)

Index-multiplier

autoincrement

;

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;

Tbox

Fetch"

;

VENUS

;

Page

CRUZ

1IN( 02)

Ihuffer

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Page

(PC)+

L
e
e
s

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useless

VA_IBUFFER

ilmmediate-mode
DATA

which

context.

data

drained

from

the
or

Ibuffer.

The

bytes.

Foint(s):

)
1011

is
is

Byte
Ruad

01
=1100

is
1is

Mord
Octa

=1010

Longuword

am has been fixed if context = BYT®, WORD, or LUNGWORD.
ntext is QUWAT or UCTA, only the first longword of the

-moge

e NN A

branching

Input:

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data

has

been

swallowed

the

microcode.

dutput

will

contzin

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mode

AMUX
data

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CONTEXT,
we

have

whica
eaten

will
out

the

address

the

Istream.

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e
e

e
AR i

YA WO
DX

Ne Ne
e
Ne
N Ne e
e
Ne NG
Ne
Se
e
Ne
Ne e
Ne
e

V3.73

The

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11

mode

branch

AR R

data

the

IT.NM.INODFX:
A

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after

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R

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will

have

A AN AR

been
with

disgarded.
the

BOA.

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Ne N

;

bourt

;
;5

word context, ditto
VA _ 70a, don”t have to branch since
we know this is WORD, but it doesn”t

;

hurt

GOTO

_ EOA, don”"t
know this is

Longword

1P.LRO:

}

XPC-CTX,

;

CONTEXT.,

;

too

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;

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4,0002,8088,8288

NDEX]

e ————— ~=-=======---;

074,

V1
we

4,0002,8788,82458

IBUF

;
;

e N

have to branch since
BYTE, but it doesn”t

context,

citto

¢
_

3904,

;

Quad

;

(Ncta

GQuad

branch

context,
uses

and

use

this

word

context

eat

this

Octa

more
eat

Ibuff

last

bytes

longuword)

;

076,

0,8002,5010,0074

1,8002,5010,0047

GUTO

ATE

DRAIN,

CI3.NKH.INDEXPCPOP.LAN]

’

7
[T

079,

context,

CORTEXT,

Se e S

278,

Byte

;

Ne Ne

Index

XWTExER B

2:16

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T-HAY=84

Thuf fer

(PC)+

N
Ne

TBOX
. MCR

IBOXCODE
.8 IC

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context,

eat

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VENUS

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handle

Page

last

L ]

lopguword

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TELXMCR

089b,

5,0000,C106,4540

2,0000,C106,0540

V3.73

VZHUS

Ibox

Microcode

Page

Tndex

Multiplier

S
N

Jperand

tae

the

common

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(EGA),

valus

Tndex

appropriately,

fetch-phnase

microflow

branches

hare

has

loaded

then

branches

E20A4

fatching

did

with

the

BHase

context.

This

code

I1B.NM.FET:,

which

LURAM

multiplies

the

code.

iption:
The

last

{RANCH

GOTO
cntry

word

complets

the

following:

CONTEXT,

CIBHM«INDEX]

Foint(s):

[d.NM, INDFX2,

branch
index.

=1100

byte

longword

octa

context.

index.

=1001

word

index.

=1011

quad

index.

[nput:
y'

contains

Ao Ne A Ne Ne

particular

Addr

Lndex

Ne e Ne

N Ne N6 Nete

after

15:02:16

R R
S

the

number

the

EJA

the

and

Index

the

Index

the

Ibox

datapath

contains

(LknJ).

Lutput:

%o we N N6
¢

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N
RENTR RN
TN NN EE
R
O @
oo
0 0 X W
C
Pt SO W
O Lo W
b

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EESEN

N6 e M N6 W Ve Ne

085 s

N M NS Ne Ne N WE NG Ne Ne N6 N

T-MAY-84
Code

o
oo

o
B
2

Multiplier

oo OO

1N(D2)

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DUVIN

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MTICRO2

%8 Ve Ve e Ve Ve e W N6 W

IC
w6 N6 N6 Na Ne Ve Mo N N6 N Ne

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;
b

will

finally

fandles
AR

AR E

=19000

contain

conditional

the

memory

tca-phase

the

address

request
of

and

operand

the

branch

R L e -=-;

operand,

common

UYyte

index

context

;

VA+INDEX

ANABLE
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TRAP
IF

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7100

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(A+D0)

CIB«NM.F

7
7

A+RM*AL,

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GPR),

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;

OF,

;

A+RM*AL,

A+R*EWL,

COND

SCURRBUAEKD
(Q+3)

CIBLNMLFET2

aND

MEM

;

VALID,

;

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which

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point

which

handling.

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index

context

PSP

will

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Multiplier
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»

153102316

V3.73

VENUS

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’

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;2314
52315
»

1-MA¥Y-84

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084,

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;2319

UNAL

;
;

Longword index context
or
last cycle of Quad or

;

Inaex

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IND

MES

7
;

72320

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;

;2321

ACCESS,

;2322

A+

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cookinga..

;

72323

32324
32325

>
1

088,

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;7
;

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;

32327

32328
I

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32329

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;2330
32331

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°

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72333
;2334
;2335

TLoNMGT

;
;
;

in
takes

context
2 cycles

cycles.

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index

context

and

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takes

Page

1Ic

in(u2)
ch

72336

Phas=

«PAG

72339

;2340

;

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;

specifier

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52343

The

72344

72345

VENUS

Phase

Common

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Page

Routins"
R
T T BT & % B
gy

calculating

word

flows

the

branch

branching

perand

memory,

this

code

here

did

the

followinas

(Q+0)

most

AND

memory

ACCESS

operand

branch.

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;

2341

’

;2349

;

72349

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15:02:16

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;

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;

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;

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;2354

;

;2355

;

J !

;

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tie

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and

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0

4,0022,6004,1843

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e

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kITE

mmmmcamm—ema=;

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WRITF,

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QUAD

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NPVALID,
BRANCH

fid

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OCTA

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Read*0

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Get

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;

longword,

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Write*Q]

write

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Modify*no

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longword,

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1-41Y=-84

Ibox

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Octa)

continues

AKX RR KRR
KRS

Wua

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R

Tt ST B

;

(Quad

AKX KT

link

e N8N

write

tirst
up

longword

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dest.

Write

operand

2low.

Ne N6

;

Hodifiy

AR TE A KRR

;

KARAR A AR SRR

AR KA

A TR AR KRR

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ve N

N6 Ne

ommorn

NPYALID,

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Fatch

third

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bump

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TR TAKKIR KK KRR

RK RS

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second

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longword

4th

ta,

write

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second

longuora

o
[T

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N6 N

write

Octa

R
T
e
FEEFAFAIAFTAKARRRRKIE
A RRTRRA KK

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N
~

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fndirect

e
N

R
R R
i
R
R
R
R
LR
T
T
T

Vi and
specifiers

the
the
to

fetch
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Fn),

are:

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A
N
Ne
Ne Ne

e
N6

request

for

the

indirect

address

was

fired

off

NeNe

indirect address into
erand.
Specifically the

ladirect

e N

e we

TBOX.1Ck
1XCODALMIC

¢,00C2,801C

;

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;

vait

for

Now

start

the

data

become

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ENABLT

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UNAL

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;

fetch

phase

operand

;

PARITY

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AND

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;
;

A+R*BUL,

AGC

3
;

Ibox

Microcode

[«

3N
Ne

N
N6

AxxwxrrER

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e

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ot
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TEOXNCH

19:02:16

Names

V3.73
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=--

ined

VENUS

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Page

Yalues

A
#00

AMUX

SEL

AMUXPC
FOUR

TH.

)

1
t

66¢

1010

1105

1125

1145

1163

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1393

1984

2039

2230

153¢

2235

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2241

1594

1604

1609

1615

1637

1645

1692

1728

1801

1817

1890

1898

2371
1094

2447

2450

1037

1047

1057

1061

1074

1079

1189

1209

1218

1250

1262

1275

1289

1303

1363

1388

1779

1777

1940

2003

1942

2021

1945

2025

1949

2069

1956

2081

2162

2189

2296

2480

2330
1703

2333
1708

1713

2355

2406

2409

2412

1025
1204

1037
1209

1042
1215

1053

1067

1259

1057
1218

1057

1218

1271

1222

1227

1296

1545

1492

1570

1407

1599

1417

1612

1420

1618

1632

1682

1725

1949

1783

1830

1841

1901

1932

2025

2042

2368

2021
2128

2025

2364

2021
2124

1988

1885

2011
116

1961

1848

2007
2112

19506

2137

2471

2140

2474

2197

2480

2200

2480

1262

1289

1770

1777

2169

1984

2230

2241

14356

SEL

ADDRRCTX

1995

2039

18
9y

1504

1G20

1037

1053

1957

1067

1125

1074

1094

1145

1155

1218

1163

1172

1181

1296

1189

1303

1197

1311

1204

1319

13
20

1328

1377
2025

1336

1942
2045

1949
2247

1351

202¢

1393
2042

1345

1956
2253

1961
2259

2000

2003

1995
2430

1037

1087

1074

1209

1218

1942

1949

2025

1956

2200

1961

1042

1080

1227

1407

1232

1417

1237

1242

1423

1247

14258

1259

1429

1432

1436

1440

1444

1677

Z1
Va

LERN

2480

1992

1423

DMUX.IEF

HOLDVA

CTL

1440

1232

cpC

DMUX < 1ML

CTX

216

2381

24317

GPR

BMUX

1311

1841

1843

2124

14936

2128

2471

1520
1618

1530
1632

+1988

1992

2007

2011

2104

2108

1570
1637

1579
1641

1584
1645

1594
1649

1692

1599
1659

1604
1662

1703

1609
1666

1705

1713

1725

1728

1733

1898

1801

1817

2205

2316

2395

2403

2406

2326

2330

2333

2364

2368

2371

1209

1250

1793

2409

2412

2428

2433

24317

10290

1329

1037

1057

1074

1542

1945

1929

1956

2140

2480

AUTGDFEC

1262

AUTOINC.DEE

1984

2032

2069

2162

2230

2235

1167

2241

1154

1192

1200

1356

1372

2085
1025

1381

DRAM

2081
1012

1364

2169
103

2170
1042

2172
1048

1057

1074

1090

1120

1141

1151

1209

1218

1222

1227

1232

1960

1218

1961

2003

2021

24417

2025

1237

Page

1235

1299

1307

1315

1323

1420
1586

1423
1594

1426

1429

1432
1609

1436

1612

1615

1649

1682

1841

1848

1725
1988

1992

1997

1666
1783
2003

1678

]

1659
1729

2007

2112

2116

2120

2124

2128

2302

2311

2322

23217

2400

2403

24056

2409

2330
2414

2011
2137
2334
2428

1689
1932
2021

1167
1356
1795

1174
1361
1802

1176

1182
1369

1184
1372

1819

1831

1378
1885

1034

1041
1134

1045

1051

1124

1144

1154

1060
i162

1171

1254

1258

1262

1299
1348

1307

1266
1310
1359

1270
1315
1364

1318
1367

1397

1302
1355
1401

1406

1432

1436

1440

1586

1594
1646
1703
1814

1444
1599
1649
1707
1821

1511
1605
1659
1715

1715

1798

1586
1641
1700
1804

1833

1841

1942

1949

1956

2025
212¢

2039

2042

1961
2046

1988
2085

2137

2140

2164

1984
2076
2172

2260
2378

2302

2428

2433

2311
2383
2433

2322
2397
2438

1037

131

542
1141
1232
1307
1402
1522

1048
1151
1237
1315

1615

1618

1632

1689
1796

1693
1804
1949
2039

1700

1057
1159
1242
1323
1417
1545
1637
1703

21490
2311
2403

1580

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1278

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1599
1662
1733

1605

1364
1813

1332
1440

2140
2364
2433

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1417

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127
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EYANTNWN

ROASORE

1356

INUEXFORK
NORMAL

1641

1633
T

DIAG

2397
2438

1659

2197
2330
2400
24417

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2378

2327

1609

1227
1299
1397
1511

1942

2007

2025

2115
2243
2313

2128
2260

2137
2302

23917

2400

2447

2480

1407
1532

1814
1956
2042

1821
1961
2046
2164
2322
2406

1063
1167

1247

1176

1332

1254
1340

1420
1571

1423
1580

1641
1707

1646
1715

1833
2076

1341
1988
2085

2172
23217
2409

2197
2330
2414

1984

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216
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v3.73
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VENUS
Defined Values

Ibox

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Page

2316

2326

2330

2333

1012
1100

1915
1110

1025
1120

1029
1131

1042
1141

1048
1151

1057
1159

1063
1167

1176

1209

i21e

1222

1227

1232

1237

1242

1247

1250

1278

1285

1291

1299

1307

1315

1323

1332

1340

1372

1381

1389

1397

1402

1407

1417

1420

1423

1436

1449

1609
1578

1el2
1682

1444

1511

1522

1532

1545

1637
1703

1641
1707

1571

1580

1783

1796

1804

1814

1821

1833

1841

1848

1887

1536

1984

1988

1992

1997

2003

2007

2011

2232
2400

2237
2402

2243
2406

2249
2409

2252
2414

2260
2428

2364
2433

2368
2438

2162
1956

2169

1605
1666

2046

2104

2108

1615
1689

2112

1618
1693

2116

1632
1700

2120

2124

1646
1715
2021

21238

2137
2373
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i012
1100

1025
1120

1057
1131

1042
1141

1048
1151

1057
1159

1063
1167

1176

1209

1222

1227

1232

12317

1254

1323
1417
1545

1247

1315
1407
1532

1242

1605

1612

1515

1618

1632

1637

1641

1646

1665

1682

1689

1693

1700

1703

1707

1715

1771
1901

1783
1336

1796
1942

1804
1949

1814
1956

1821
1961

1833
1984

1841
1988

2007

2021

2025

2039

2042

2046

2076

2085

2116

2124

2128

2137

2140

2164

2172

2197

2243
3

4253
2383

2260
2367

2302
2400

2311
2403

2322
2406

2327
2409

2330
2414

2447

2471

2480

1278
1372
1436

1291
1389
1442

1299
1397
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1307
1402
1522

1332
1420
1571

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1340
1423
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VENUS
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1804

1892

1900

1961

1984

2025

1085
1149

1098

1100

1108

1151

2075

2076

1110
2299

Page

1139
2478

2480

1025

1042

1048

1063

1090

1159

1167

1227

1232

1237

1242

1247

1254

1259

1266

1299
1397

1307

1315

1332
1420
1580
1659

1356

1423
1586

1348
1426

1532
1641
1715
1843

1323
1417
1571
1649

1340

1407

1725

1729

1887

1932

1444

1511

1515

1618

1632

1693

1760

1703

1314

1321

1833

1402
1522
1637
1707
1841

1429
1599

1662

1666

1678

1733

1771

1935

1956
2112

2085

2104

2378

2201
2397

2232
2400

22317
2403

2108
2243
2406

2372

1037

1042
1141

1048
1151

1057
1159

1063
1167

1232

1323

1242

1247

1012
1100

1020
1110

1200

1209

12118

1271

1278

1285

1364

1372

i3sl

100
1090

2119

1131
1227

1307

1237
1315

1402

1407

1417

1522

1532

1545

1618

1632

1693

1700

1637
1703

1804

1961
2046
2164

1299

1397

1432

1436

1440

1511

1599

1605

1609

1615

1662

16656

1673

1682

T 1689

1733

1771

1779

1783
1936
2021

1790
1942
2025

1949
2039

2129
2249
2378
2450

2124

2128

2137

1814
1956
2042
2140

2253

2260

2302

2311

2383
2471

2397
2480

2400

2403

2322
2406

1074
1134

1079
1141

1085

1093
1151

1100
2070

1440
1936

1057
1254
1340
1444
1942

1063
259
1348
1545
1949
2039

18313

1901

2003
2112

2007
2116

2231
2368

2243
2373

2438

2447

1932
2011

AWK

2002

1548

2334
2471

2330

N ST

2046

2197
2383

p @1

2042

ob
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2021

2172

I3RS

2011
2164

2447

2302

1594

2007
2137

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1440

1083

1141

1261
1389

2450

1074

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1212
1072
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2322
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1129
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1006
1192
1285
1381

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1605

23063

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1821

1779

1988

2249

2116
2253

2409

2414

1332
1420
1571
1641

1707
1833

1964
2076
2172
2327

1176
1254
1340
1423

1560
1646
1715

1841
1988
2085
2197

2409

2330
2414

1103
2076

1110
2296

2302

1090

1209
1271
1407
1703
1961
2046

1984
2104
2232

MCF
1067

1131

2319

2475
1898

2480

I8.FILL.IBF

18113

2322

18.FILL.OP

1796
1012
1227
1299

1814
1020

1832

1886
1042

1232
1307

1237

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1890

1025
1315

1426

1429

1432

1783

841

1848

1242
1323
1436
1932
2011

1144

1048
1247

1332

1266

1402
1700
1956

19917

2003

2007

2021

2025

2116

2120

2128

2137

2327

2330

2406

2197
2409

2201

2253

2140
2334

2164

2249

2124
2260

2400
1677

2403
1687
1163

1692

1728
1172

1176

1181

1184

1189

1192

1159

1167

2042

1278
1417

1707

2471

1037

1124

CONDITIONAL

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THDX <MCE

15:02:16

Field

Thox Microcode

Page

Mapes

1356

1364

1372

1377

1381

1385

1389

1612

1681

1732

2083

2085

2170

2172

1530

1604

16069

1615

1640

1641

1658

1659

1665

1666

1632
2397

1632
2414

1641
2428

1659
2433

1666
2438

1715

2363

1227

1232

1237

1242

1247

1259

1271

1402

1938

1988

1992

2007

2011

2104

2108

2112

1100

1119

1120

1131

1141

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2076

2302

1315

1323

1332

1340

1348

2164

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2378

2396

2391

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1372

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1176

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1689

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1604

1615

1984

2021

1678
2025

1688

2039

1693
2119

2137

2302

2447
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MEMORY

1032

1097

1151

1100
2071

1107
2076

1110
2298

NOoP

1141
2480
1042

1063

1090

1159

1167

1227

1237

1247

1254

1299

1315

1242

1323

1332

1340

1397

1407

1417

1420

1423

1426

1511
1659

1571
1666

1586
1682

1599

1618
1707

1783

1804

1814

1936

1992
2128

1997
2164

1700
1821
2007
2172

1612
1703
1833
2011
2197

1841
2042
2201

2330
2471

2334

2364

2368

2378

1048
1151
1237
1291

1057
1159
1242

1063

1074

1167
1247

1176
1254

1184

1291
1340

1299

1348
1397
1444

1348
1397
1511

1307
1356
1402

1612
1682

211

2260
2433

1259

1348

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PARL

b
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1141
1232

e
e
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1532

1042

1131

1407

1358

10317

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1192
12592
1307

1085

MODE

REG

1227
1278
1332

1285
1332
1381
1432

1340
1436

1389
1440

1599

1605

1609

16562

1666

1678

1733

1771

1779

1783

1893

1932

1936

2011

2021

2120
2249

2124

2128

2237

1901
2007
2116
2243

1615
1689
1796
1942
2025

2364

2368

2373

2378

2437

2438

2447

2450

2253
2383
2471

2260
23917
24890

1305

1313

1320

1329

1338

1346

1381

1429
1594
1659
1729
1887
1997
2108
2232

2003
2112

1389

UBEN

1254

1522
15618
1693

1804
1949

2039

2137

2302

2400

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3

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7-MAY-84

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15:02:16

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V3.73

and

VENUS

Defined

Values

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Page

2236

2242

1025

1042

1048

1063

1090

1159

1167

120

1222

1227

1232

1237

1242

1247

1259

1364

1331

1389

1397

1402

1407

1417

101

1356

1429
1586

1432
1594

1649

1659

1440
Leos

1444
16409

1666

1532
1618

1511
1612

1522
1615

1545

1678

1693

1700

1703

1707

1632

1733

1783

1804

1814

1821

1833

1841

1893

1901

1932

1936

1942

1949

1956

1961

1988

1992

2003

2007

2011

2021

2025

2039

4085

2104

2108

2112

2116

2120

2124

2128

21317

2197

2249

2253

2364

2450

2471

2397

1037

2400

1056

2403

2406

2260

2327

2330

2334

24238

2428

1073

1074

1084

1085

1099

1100

2322

2479

2480

1120

11302

1131

2311

2321

1661

1683

1996

2378

2302

2310

1140

2409
1141

2414
1150

1151

1208

2433

1217

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2382

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1011

1794

1068

1081

1095

1104

1115

1127

1136

1148

1284

1297

1305

1314

1322

1330

1339

1347

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1164

1172

1187

1188

1196

1290

1355

1359

1392

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2168

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1222

1417

16783

1682

1420

1423

1689

1693

1594

1599

1426

1429

1432

1700

1703

1707

2161

15480

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1605

1609

1612

1615

1618

1783

1814

1833

1848

1942

1956

1961

1984

2039

2042

2045

2120

2137

2140

2201

2232

2260

2302

*2311

2322

2321

2330

2334

2373

2409

2447

2450

2480

1225

1230

1235

1240

1245

1257

1269

1987

1931

2006

2010

2103

2107

2111

1725

POPSTACK

EAD

1584

1586

1632

1640

1641

1658

1659

1715

2363

2367

2368

2376

2424

2378

2395

2432

2436

2438

1052

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«SBGEN

FORCE.
INDEX « THM
INHIBT

RAF

WRI

-»

2309
2243
1203

1205

2115

2397

1= 40y

)

UTREP.CTV

UNPACKE

VENUS

Tbox

#icrocode

values

1048

1063

1085

1099

1100

1157
1271
1511
1632
1700
1814
1992

1176
1402
1545
1637

1184

1192
1417
1580

1200

1222

1420
1586

1423
1594

1703

1707
1833

1659
1729
1887

g
N
AL
[T

2116

1321

1997
2120

2327

2243
2406

2409

[ 1]

1395

PRy

1387

1344
et SO TGO
D SO
e Pt|
S0
W N

3
€
WO
DO

Listing

1407

1571
1641

1646

2124
2330
2414

2128
2334

2428

1649
1725
1848
2039
2137
2364
2433

1048
1151

1057

1063

1159

1167

1247

1254

1259

1266

1340
1423

1348
1426

1356
1429

2007

1715
i841
2011

2042

2140
2368
2438

[N R

N et
e
=3 @maoL AN
b
Wo WM
=W

teforence

CTL
LITEKAL
Nop

SIGN

1012

10z0

1037

1042

1100

1110
1227
1299

1131
1237

1141
1242

131§

1323

1580

1586

1594

1615
16849

1545
1637

1571

1612
1682

1407
1532
1632
1700

14117

1444

1397
1511

1332
1420
1641

1703

1707

1649
1725

1659
1729

1783

1796

1848

1887

1936
2021

1942

1646
1715
1841
1988
2085
2197
2330
2414

1057
1159

1063
1167

1242

1247

1323
1417

1332
1420

1545

1571
1641
1707

12272

1291
13872

2124

2028
2128

2253

2260

2383
2471

2397

1814
1656
2042

1821

1833

1961

1984

2046

T 2140

2164

2076
2172

2311
2403

2406

2322

23217
2409

1992
2104
2201
2334
2428

1176

1997

2108
2232
2364
2433

2480

UNSTALL

1012

1037

1042

1048

1100
1209

1131

1141

1151

1227

1232

1278
1372

1299
1397

1436

1511

1307
1402
1522

1237
1315

1505

1615

1618

1560

1689

1693

1783

1932

1997
2108

2011
2120

2232

2249

2364

2378

2433
1775

1175
2171

1407
1532
1632
1700

1637
1703

1936

1942

2021

1949
2039
2137

1956
2042

2124

2025
2128

2260
23917
2480

2302
24900

2311

2450

2253
2383
2471

1801

1812

1820

1830

1841

1199

1371

1380

>
~

NDRMAL

1063

1090

2140
2403

UPAR
INDIRECT

CTL

UTRAP

1176

1254
1340
1423

1580

1646
171s

1961

2046
2164

2322
2406

L
1

(02

V3i.73

teference

znd

1232
1307

Values

12317

1242

1315

1332

1432

1440

1254
1349
1444

1693
1804

1700
1814

1949
2039
2164

2042

1682

1615
1689

1783

1796

1693
2003

1901

1997

1936
2021

1942
2025

2116

2120

2249

2124

1932
2011
2128

2137

2253

2400

2327

2403

2260
2406

2409

2330
2414

2140
2334
2428

1096

1106

1lie

1126

1137

1146

2072

1025

1042

1057

1074

1151

1090

1167

1237

1176

1247

1184

1254

1192

1729
1887

17711
2007

1340

1356

1364

1423

1429

1580

1594

1646
171%

1729

1432
1599
1662
1733

1841

1659

1259
1372

1783

2120
2249

1936
2021
2124
2253

23178
2450

2383
2471

2085

2108

2232

2112
22317

2243

2364

2368
2438

1200
1285
1389

1932

2197

2433

2438

1779

2003

2414

2433

1666

1901
2007

2330

2197
2368

1771

1605

1893

1548

1956

2364

1271

2116

2373
2447

2011

1271

1381
1440
1609
1678

1436

1887
1997

2414

1532
1632

1612

1407

1522
1618

1511

1678
1779

bW
S b IR
D L.

1402

1609

e
bbbt
B

1266

1605

R
B
A

1259

1348

1666

Page

1662
1733

0 R

1247

Microcode

1599

1659

s b

e bk et

Cono

v = SO
S DU
OYE T Qoo

WBUSREQ

Tbox

FENEERC

1429
1594

VENUS

Defined

UPERAND

) S

R R

e N

Cross

MICRN2

1444
1612
1682

1275

)

WITH

BRANCH

ACCESS

BRANCH

ON
OR

ACCESS

RLOG FI&GST
VALTYD

COND

IBUF

FLUSH

COND

MEM

2073

OCTA

BRANCH ON
CLEAR CPC

1270

1275

1343

1355

1359

1282
1367

1109
2479

1119

1130

1140

1283

1298

593

223

2242

1306

1320

1329

1338

1346

1681

1688

1996

2382

1011

1794

1079

1993

1134

1144

2070

AND

1262

(Q+3)

QUAD

Page

1327

Microcode

b
b

BRANCH

Ibox

CONTHEXT

CHECK

CYCLF

BMUX

BOA

VENDS

135

Macro

FRNEN]

T-MrY=-84

Listing

1376

BIT

LOAD

CPC

REQ

2475
CONDITIONAL
CONTFEXT

CONTEXT

IS S

FA
-

ENABLE

OPRUS

ENABLE

TKAP

MEM

1168

1127

1136

1148

1284

13390

1339

1347

1174
1795

1352
1831

1361

1369

1885

1892

i0 30
24 76

1069

1955

1959

2001

11 66

1183

1363

1371

1380

1094

1137

1146

2072

1355

1359

REQ

CONTEXT

PARITY
[F

CHECKYNG

UMAL

INU

2084
ENABLE

TRAPY

UNAL

10 70

23 17
FLUSH
FLU

LOAD

FORCE

SET

GOTO

CPC
M=M

REQ

VALID

SCORZARUARD

€3

ENA

DPBUS

VALID

812
811

;

736

1817
1804

18 41
19 o0

ing2

i1 56

1307

137¢

13 84

PARITY

CHZCKING

82 )

825

2301

1173

1188

1025

1037

1120
1227

1131

1299

HOLD

TBUFFER

IBUF

REQ

IBUF
1FOPK

FROM

1232
1307

1042
1141
1237

1048
1151
1242

1057

1063

1159

1167

1176

1247

1315

1323

1332

1254
1340

1417
1666
1932

1259
1348

1689
1936

1397
1571
1821

1402

1407

1586

1618

1833

2011

2046

1848
2076

2172

2201

2232

2373

2377

2383

22317
2391

1892

1900

1961

2085

1420

2104
2243

1423
1693

1700

1942

1949

2108

2112
2260
2480

2414

2249
2438

1984

2025

TRF

FROM 0P

1899

13386
1304
2450

1426

;

160K«

MCR

;

fross

Hefursnce

15302214
List

A+R*DAL

IFNORK

QUAD

TCE

194

IFORK

R*HuL

129

105

IFORK

V+W+RM*GWL

710

1061

1289

751

in47

1275

2299

@
&

1N(D2)

IFORK .IF

IGPR_TIGPR+4

7193

IGPR_TGPR+CTX

MICKOZ

IND®X

CVCLE

INDEX

IMMEDTATE

SET

SCUREBUARD

VALID

INHIBIT

DRAIN

STALLS

UNPACK

1072

230¢

2319

101

793

1222

739

1285

VENUS

Ibox

sicrocode

Page

acro
1083

2478

1743

2002

1203

1212

1108
2119

1117

1129

1139

1149

2075

1312

1321

1331

1337

2372

2243

2252

225

828

1263

1276

1223

1294

1304

1344

1362

1370

1379

1387

1395

1776

1793

1801

1812

1820

1830

1841

1893

1901

1609

1615

1678

1688

1693

829

CPBUS

404

1216

[

INHTBEIT

LITERAL

103¢

V3.73

MARK
Moy

MOV

WRUS

HEG

WBUS

MOV

4(RC1I)

MOV

RL1

MOV

RCTI

DPBUS

SCOREHOARD

REQ

WRUS

UNPACK
CHECK

OPVALID

2161

2168

1594

1604

1960

1984

2000

2021

2025

2039

2119

2403
1097

2447
1107

2450
1117

1128

1138

1147

2071

OPVALID

A+TM<AL

3
i

OPVALID

R+(MV*EN)

1213

1172

1igl

1189

1197

1351

1360

1368

13717

1612

1519

1581

1725

1732

2083

2170

2371

READ. 28D

15390

1594

1604

1609

1615

READ.NOPAGLH

2403

READ.NOPAGE «2ND

1687

1692

1723

1083

1225

1230

:1235

12490

1245

1257

1269

1987

1991

2006

2010

2103

21901

2111

1024

1034

1041

1045

1051

1060

1066

1113
1226

1124

1134

1144

1154

1162

1171

1105

1125

1145

1163

1181

1197

1311

READ

2137

2447

READ.WCHK

RESFRYED

ADDRFSSING

FAULT

RETURN

1532

STALL UNTIL
UNYIND RLOG
UTRAP

2115

IMD MDREEP
ENTY

CIF

VANILLA

CYCLE

RMODE

CYCLE

VA_O

VA_AMUXPC+IBUFFFT

2143

DATA

159

132°R

1§

134

1004

1360

1010

13717

1393

1175

2:1

V3.73

VENUS

Ibox

Microcode

Page

VA_MMUK

VA_CPC
VA_CPR(

1282

12986

1995

2000

2021

2025

1172

1189

1303

1319

1336

1351

1632

1641

1659

1665

1682

1725

1594

1604

1609

1615

1637

1645

1728

1801

1817

1890

1898

2371

2447

2450

1713

2395

24006

2409

2412

1658

1665

1713

2363

2307

2376

1714

23617

2396

2413

2421

2432

VA_IBUF
VA_TGP
VA_IGPR(PREY

VA_IGPR(PR
VA_TGPR+150

1135

1155

VA_TGPR_IGPR=CTX
VA_TMD
=

Va_va

VA_VA+2Z(INGTX

GPR)

VA_VA+4

VA_VA+4(THD

2330

2381

2333

VA_VA+INDEX
VA_Va-4
VA_NANS

WATT

VALTU

WRITZ

READY

WRITE.NOPAGE

WRITE NDPAGE« 2Ni

1537

1545

1649

1662

WRITE

TENX.HC

;

IFORPKHTGH

TFORKLOU

)74

473

MATNHIGH

377

MATNLOY

nUS

Ibox

Microcode

sLocation
0o

008

1814

17662

16332

010

020

Vig

030

028

e e eR

038

22317=

2243=

2311=

2322=

249=

2253=
2330=

y10=

24z9=

11
1

1100
1417

1110:
1423

Unus

e i

97=

12
13
14

IBOXMCR

1307:
1432

1315:

1440

7-4AY=-84

XMACRO

TBOXCOD S
Used

173
173

Remaining

Total
Total

microwords

used

microwords

remaining

Highest

address

used

memory

in
memory

OFF

:
(

15:02:16

V3.73

VENUS

Thox

Microcode

Page

Tbox

Pass

licrocode

warnin

Lines:
]

error

]

Pass