Digital PDFs

XX-01C0E-23

July 1965

1 pages

Original

0.8MB

Document:	F-66 PDP-6 Instruction List 196507
Order Number:	XX-01C0E-23
Revision:
Pages:	1
Original Filename:	http://bitsavers.org/pdf/dec/pdp6/F-66_PDP-6_Instruction_List_196507.pdf

OCR Text

F-66
0

121314

I AC I11 x I

INST

AD'9RESS

INSTRUCTION WORD
0

910 12 1314

DEV

I
~

1718

IOTI

7/ 65

/~5

1718

ADD~

INSTRUCTION LIST

IOT INSTRUCTION
5 6 _ _ _ _ _ _ _1~7~18.:__ _--/

AP STATUS BITS
0 = AROV
3 = PC CHANGE
l = AR CRYO
4 = BYTE SUPPRESSION
2 = AR CRYl
5 = USER MODE
STATUS WORD
0

1~5

I DESTl~ATION

1718

SOURCE

BLT CONTROL

/~5

1718

-WORD couNT

ADDR)ss - 1

SET with

Isl

DATA
TWO'S COMPLEMENT NO.

ll 121314

AND
inclusive

Immediate
Memory
!'>th

~lo:~;~~ ~~~ractpR~tid~
F ating MultiPly
r1oating Ql~ide

Memory
!oth

£.looting SCale
Arithmetic SHif}i,,,.._,
Iogical SH ift
~ombined
ROT ate

BOOLEAN

ARITHMETIC

ADDR

EXP.

OR1~· ~ccum.

BYTE POINTER

Isl

Ji_....,,

/"-/

EQuiValence +------------+--4 Immediate
Memory
eXclusive OR
Both

Comp. Memory
~omp. !oth

17 18

SUBtract
ADD
MULtiply
.!_nteger MULtiply
DI Vi de
.!_nteger DIVide

Accum.
Memory
Comp. Accum .
:Somp. ~emory

IOT CONTROL WORD,
PUSH DOWN POINTER
01

-~~eros
Ones

MANTISSA

7/~

FLOATING POINT NO . -/
PDP-6 WORD FORMATS

PRINTED IN U . S.A .

5440

SKIP
~--~~Less
JUMP
Add One and Skip
Equal
Add One and }ump
Less or Equal
Always Subtract One and Skip
Greater
~ubtract S2ne and Iump
Greater or Equal
}Slot equal Compa re Accum. with Memory
:Sompare ~ccum • .!_mmediate

~dd gne to !oth halves and .:!_ump if i!ositive

e~e~u!_e instruction from memory

Jump to SubRoutine in memory,
- save program counter/status in memory.
.:!_ump, ~ave !rogram counter/status in cecum.
Jump, Save Ac cum. in memory,
- saveprogram counter/status in cecum.
.:!_ump, ~eset ~ccum. from memory.

Bit 9:
Bit 10:
Bit 11:
Bit 12:

Test cecum, with

I
Direct memory
Swapped memory
Right immediate
Left immediate

I-

Bit 9:
Bit 10:
Bit 11:
Bit 12:

~wop

Jialf}---ffiight to
L1.eft

Dismiss Pl
Halt
Restore flags
Enter user mode

. Negate
gagnitude

AR OV flag
AR CRYO flag
AR CRYl flag
PC Change flag

.:!_ump and ReSeT flags

,set
Nothing
Zeros
Ones
Complement

M01E

-.:!_ump on ~lags, Clear flags,

~egative

10-7/ 65 -

1Righ~Q:s
.b.eft

Zeros

Extend
EXCHange

cecum. - memory

Block Transfer
~

Pusill_f ...v

fQf.j
I

, but first skip

ld:ump

~ditionl0Out
Skip if Zeros
Skip if S2nes

I
Always

if Equal 0
if Noto
TEST AND MODIFY

0cremen

Bloc~]
DAT A

Qn
~------1~ut

JUMPS, PUSHDOWN, AND 10

LoaD
Byte
Qe~sit !rte

_0crement !yte !ointer
DATA TRANSMISSION

Immediate
Memory
Self