Digital PDFs

130-101-042-00

June 1972

11 pages

Original

4.9MB

Document:	RSX-11D Multi-Teletype Handler Task
Order Number:	130-101-042-00
Revision:	0
Pages:	11
Original Filename:	http://bitsavers.org/pdf/dec/pdp11/rsx11d/RSX11D_Spec_Jun72/130-101-042-00_MultTTYhandler_197206.pdf

OCR Text

. .~· ···.,~ . .,. . .. .,.. ~,·· COMPANY PRIVATE
i't•. i:•1,tJ,f:L!J:.RETJ.JRN TO RICK ELLINGER
~,~,..;~...~·':AUTO. /MEAS. /DIV.
Rsx~~10

$?EC

.. -·-::·-----~
TOI

RSX"l1D DTstr[b~tTon
.
'

CATE; 2·2 Jun 7'2

SUSJ:

MULT!~TELETYPE

09ca

~3~~1~1-042-0~

HANDLER TASK

Tha mater(a) Included
fn
thJs
functTcnal speclffcRtfo~, l"c'u1lng
but

not

tlmes

llmlt.eo

~nd

Information
such

to,

ooer~tfn~

ourp,.,ses

ml!lter f al'

tri~trqctl"n
s~eP.Cs Is foj
~~1:.1,·
A! I

is subJcet to ch:::qiq£

wTt~nut notf ce,
~m&kes
no c I ti. I r.i

UCC

Conse~uPntlY
a~n

5ra i I :'"lot

lfahle for fts accuracy,
soeclf l~d
t e rms
" R~ X.,
an d
" RS X•! 10 " 1

u~1ess

other~J~e,

" RS ..- • U. ''

t~e

I ,.,. ;J I y

MUL.TI"TTY HAMDLEP. ~ASK

110

l NTR 0 DlJ C1 I 0 ~J

111

1'hls

PAG£

funct(onal · specTfTcatlon

wl 11

cover

·2

hotn

lnterfor oesTgn conslceratfons and oqt~ard a~pear~~ce
l/O handler Ta~k to supncrt multln1e tel~t~oe devl:es
RSX-110~
The Index Is below,
A1

HANDLER SVSTE~ INTERFACE

l~JCRRUPT

SERVICE ROUTIN~:

~f
~n·

[PARA
CONVE~TIO~S

[PAPA

,_.

·~~--~~--~~-------~--------

A.•.

Te i· a·y~e

dav!~~s

stanc~rdlY

rei~t;y~a

H~~oTer

Task

su~~~rteo

lnterruct

2G:vicD roL :

~"'<:ti

t e c n a r Is e c:

1 ·1

V. SR 3 3 . ~

~SR35

LA32 CD£C~RlTE~) •
oara :; e1J

A; ;

~~e

char/sec
- t:• ...,, .. .

~oov~

t~fetyoe

c~ar/s~~

o~vlcc~

~ =-

o p e ;.; -: o r
c c. ~ s o I ~ > w J i i ~ e i n l t ; -:
I f n ~ ~ t f u c ~ ."} t o t ~ e P DiJ • 11 v ~ :i -c :· ..

c·

•

:. - ~..... • .. .-·. !...;
-

-- -· .
- ;"

cur :- ~ n t I y
a-·r, v Ts f Cl n c .,.j i; ~. (:. ,~ ..: ".; ,"'. ;-, ... , 111- ·
t e ; Q t ~,.. ~ e - c ! '::.. s s d. e v i c e 5 m~ 1 a ~ :> ~ · . ~·

I. t

ar~ ~ada
so tnat tnl3 sn~u!c
oroo!ems wfth the Handler. T ~ e
h c \.\ e v e r- ·.- i I : r. o t s u :rn o r t a
1 o ~'
~· .·.

0 ·,

.. •"' ...

• i .......

A:. : fas e'"' 't l

~ax I r"l u ~

<:;; <. ·

•

of l 7 de v ! ,. : :-

• : . ... · ; ·.,

to ~e ~n~olerl for ~nv SX·~l~ M~~ . :
t o r ;; s t r f c t i ., n s o n t h e a ! I o c a t n c . _, ,: ; ·· ::. :·
0

K;,..-~1:,

m ~ ~ Yi~~

one Ticl !"<> jOe

a ~axfmum r~t:

C~V!Ce,

.s,.

JS ~ ~ ~ ~
-~ :·· ~ 0 ~

PAGE

212

INTERFACE

USER TASK
A~

Handler· 1ll<e
an~
other
P.Sx.,
Ha n d I e ; ,
r e e a l v P. s J t s Q u e tJ e d r P. ·:) 11 e s t s f r o ~ ;
a c t I v e t ~ s ;.c v I a. a 1t h e r o f t ~~ e t ,... -, : u~ uE I ri
S vs t

The

Teletvpa

Of PoctJvas,
Tn~
~se'
with a requast.node to
Cl.UNJ 1

desired,

oara~etars

tas~

pro1i~c~

the

loqleal

w~ll

necccssa~Y

for

th~

rllrectT
nu~~

unit

as
·~it"'
the
vari,.
Its
ex~cutfon,
•

system determJnes whfc~ p~ysjcal ~evlce ~he ~r
L.U~ has neen assJgn~o
to and ~fter arl;JJ.0~ sr
' I ni< &i g e ~ n d I J s e r I 0 e ri t r f ' e ,. I n f 0 r i;'I cl t ! 0 ,, I Q l.J e '; e s t
nod~ to the aporccr fate ""a"aler's recuP.S.~ l'l~t·,
9~

~~blc below gives descrl~tlons cf
~ha
vari~
1/0 fvnctlons oerrormed for tna ~r,er ta~~ ov ?
T e !' e t y p a Ha n ~ I e r ,
Th e s e c c d A s w J I I o e c o ;':i".~ a t i ...

ThP.

~ttn

sll'T'f I~~

ocrn,..,ands

'-''ll'ja

v~r ra~y

dev}Qes, th~s oromotlng device l~~e~cna~nca:
T
U s a r ma 'I a I s o s p e c f f y a n I I C s t a t :J s ··1 o r Cl , :\ ,, ~ / n r
event f Ina to tne Hnn~ler fo~ any 11n f~nct~
through the ,aouest no~e~ T~e Ha~11er wf I I e~·
the vsP.r evant f !aq too~ set tJf so~clf le~J , ~~
'thn IIO ful"'lctlon fs co~plata, arid the IJS~r stat
word CTf so3clfedJ to be set to ~~ oct~I var
~-determlnlnq tne outco~~ of t~a IIC ts~cc~ss, or ~
t~pe of fal lvre lncurredJ,

cone: /;

-·"'!'·•-

DE: SCR 1P T I 0 ~-: ·j
F"UMC TI Q ~·~

COMM~ND

r HA ~ n L. -E R
. ..

--~----

--·-·-~-~~------------

WRITE:

WrJtes a ltne 'rom a IT
b~ffer
f'e~uestln3

WRITEITEXT F"IL,E:

:...'rlt~s

specif lerl
node, t~

method

CSee

EC~O

reo~~

echo~d

oevf ce,

2,J~J

1 tr"le 11'to a
within

except

charar.ters

IT
t

tasL<,

sa.,,e as RE!lJ,
.. J no u t

sclec~

.ianJI
1esP:".!O 111"'

rei:u~stlng

READ I ~!O

tn~

TE:ilety~e

s~~tlon

Re'ldS ~
buffer

REAO

tnxt

user
This

telety~e.

curre1it

wtt~ln
tas~,

tnt:l

::t

t~l~tv

l.4~0

Oedf cates the
t€lt3t\
t I) t
soecff
fe~
device
•Jse r ta ,,SK
t~~uTri~
•

A~T~CH

"ATTACl!~

vser•s

l
\itr \

On Iv
reqyest nodes

be
pro c e '3S'.3 d
:>v
haridl"er for tn:\t
~evi-:
...
0 f
ret'laro!es3
<"

DETACH

2~0r3

orJortty
nodes,

~ tne r

Oe'tacnes

the

~ser

from the tll I a tv;j~
,._ .
~

0 ·,

::iev i r.

Nenate.s an AT T.'\ ~ r1 •

The foi~~t of tne text I Jna ~utfor s~ecf fJ~~ In~
user ff~ EAL),, 0 r ,, '·' R I Tr.. t '~ n c t I 0,, r a (l ij,, s t n 0 "'i9 s I w ~
be comoatl~le wfth tM~ t~xt I r~e fcr~ats a~ifi~o
th e r I l e s 0 r ,., j e c t '
T t'\ r s f n r "'1 a t l•I I ' I b ~ I n c I u fJ Cl Q
detal I here. when lt oecn~~s avat 1~01e·,
-; t;). t y s word ! o cat i on ~ i f des f r ,:s :l , l :.; d I!?< l ."'l ~ c
1..1ser t?.sk, wltnl~ user core, frcr:-: an a~ors~s
t h e 'J s e r r e q q e s t n o d a..._. . ~ ~ s s I ~ I ~
v a I 1..1 o s
cf
t~
word uoan co~pletion of a Telet~re orerati~n ar~:
Th a
~h9

·1 ••
2'"

+1
+2

; Successful como1ctlon

3•

•

=. Read

4•

= Su~cessful co~o1~~lo" nf ~nn~.
ooerator
ter-nlni1t~d
11.,(.;
w:
ALn~ ~ c1 E , r! ~ t c A:i R I v; ~ ,. ,t: T' nn •
typed

co""p!ete'!
~ax1~u~

termln~tor

typAd

CP.cnyso

~u~bor

cn~ral
~~~r~:~e1

s~e~,

OCPf~trr,

termlnato1 Clf write ~cer~tfonJ
5·I +5
~ ,5
tyned ~Y o~eratcr Cff wr 1
.
. OPerat{orJ
.
---~----~--~·-·---·~---~~-~-~ .
6~
•6
~ Ii 1 · aga~ fu"ctlon coda
7~
~13
: !I 1·egal ~uff~·r an~re~s
8',
•14
:: I 11 tJ'Jal tiJffi:ir count
.
9 '•

• 2 ~ ?. :: T e I' o t y o e
DP v f c ~
d o s f r q d I I J f tJ n c t I o n

1~, -21~ = 11 ! o\a!"
11, ... 22~ ; Timeo:..1t

f nc an ~ h I q

cn~r~lcters

occurreo

CJ f

oporatlortJ

12, ,.999 : No n o d·e n. v a I ! a h I e f o r r o n u ~ s t

E·,

·.~ u '

Th e :1 e n c rr a I f o r mP. t o f t n c ro Q•J e ~ t "' o ·1 c ~ :~ ~ t
" a s s 9 s t o t ri o J u~ 1.' F~ I / o u l r P c t I v e i ~ ,.. u f i '
Jn ti..e I/0 GoeFatlon~ 5;i~clflc=\tlon, Tr.~ o~t't
bIt
d e f f n J t l 0 n s 0 r \ti 0 ,. c s ? • 1 2 0 f t i) e n 0 r1 0 ti 0 Y• ,, ,, i
•.J s o r

PACE

MULTl•TTY 4A~DLER TASK .
a re de f J n e 'J s c_T e y by th e

functlcns

avallable

fr~m

Fy n c t t o n ,

II n
~he

F' o r

Taletvo~

h~n~1'

three ~as(c detar lod . for""'ats of wor(]5
5-1?.
e'<I'
o , ni a t
A Is f or I /
f u n c t I o f\ s " :..i f< I TF: '' , " R~ A~ '' , ;
'' RF.: A D! ~i 0 ECh 'J_" '1 F' o r ma t Q 1!i f o r f u n c t I o ~ s " t. i 7 ~ f
' an d .. DE TAc11 ,. • F' 0 r ma t c I s f 0 r ,, \ti R I TE ! T Ex r F I L:;: ••

l',

f'OR~AJ A

WO#

ME:ANitJG

The .16 bit address of the
start
t h e t e.)( 1: I I n e b u f ·f e·r r e I a ~ i v ~ t" ·

use,

tas~

~oda wore Clf set:J
SITS ?·lJ=UNUSEn
BlTS 14= ~ass all charact'

Specf~I

a,
C,

. CqUBOUT, •U

etc~J

BIT 15:t ' no I~ h':lta cou.,t H-lr.·
Ctermfnator wl 11 rot erti I in~ ·

NO SPE.CIAL.I2ED
NECESSARY

110

THE f" 0 Rt-~ AT wI LL 2 E

FUNCT ~ v~J

wo~os

! Qn H I CAL TfJ Tu C: - " C~
f 1~ E: " Hcau Es T As 0 EF P' E. ~ ~ y THc: r I L. r s ? q 0 J E,

~ULTl~TTY

~ANOLER

TASK

213

SPOO~ER

JNTEPFACC

Toletycie sooo!Tnq

fo~

a 3 e pa r tl t e t' an d I ~ r t a s 1< , f o r ·a I I u s e r I I ~ " !.o: q r T i
f u,, c t I 6 n s
a s s r g n a ij
v ra l- u~.' ; s I
t 0
a
.. spc ~ L =- :
de v l c e ',
i hls
" so o o I o r r; ~. n ·1 I e r '' wr I I o o t i,; r .
t h ro u g h o u t ;,.: s I n g · J t s o wn d I s k ':'! a"' I o ~ 1 a t I ~ n ',
'•

Theraf6re (t wTI I enable the user t:'\sk to fu:'i ...
lts Teletyp~ Oytnut dlrActlY to dfsk anri ~x:
Thfs wf l ! botn frae core, ~ri~ dr~~a.tic~I ty uP:'"e-:
runt Tme fort TeTetyoe
rlcs ( rab I c faatures~

8 ·,

RSx-11r ~1 I I be oerformeri

t'-io vr-

I/O bound user· ta3kc; I

Tl ~ e t fol e Te f e t .Y p e Ha n d I e r , t h ~ · fi:.t n c t i c ,..
of the Te1 · aty~9 Sooolar wrt, the G~
t a s fl( wT I f b e s l mI I a r t o c t ,., e r ;~ 5 ':< - j .1. ': I / r.. h ;... r o 1 e r
~ron6tl"~ user t?sk ~evlce i"cApAn~enc0.
To s~oo
s J mp I y c h a n Q e t n ~ u s ~ r
c u t o lJ t L. '.J ~ 1 f r o ~ t e I e t ~ ,
device to "~~oolei" oevice ·,
AI so a

!nte~faca

~and I er
Itself ~1 I I a150 ~rovT
nol"•c1ev Ice
l rt"1ef'.'tndont. f cr"'i
~poo ! In~,
HP.re, tr;e u~er tasi< "s~'Jo 1 s•· it~
outr"
t"fn!3s
dJractl:t to _,_ a t~xt fl !A on t"'c ~I~
u~ftfzfng - t~a
I/O record h~r.r.1tn~ c~o~tdift?
r. r o " Td e d
c ~'
t he
F" I I e s
::i r o j ~ c + ·,
J ::o "., ri
t -:
co ni P ·1 et I ,., ri Co i t n c r a t er"' I n at I n g · c ,. , ~, r ~ct a r , ,, r
user
::irograri
e)(lt er at"Jort:J, a · "~~RITr: Tr.Xi r~t.

ThP.

Teletyce

fac ff It I es

reouest

fo; . a

te aueuej
e ri t I r e u r1 o r c 1..- e ,,
be oytnut on tha ~ser specif iej
yser soeclf{Ad prtorfty.

h a no I e r 1

o ·,

nocr.

wt I I

1~ e

.,h8

TPl~t\

f f I ~ ·,,1 1 I t

Telety~o,

un~er

t 1-,

•

"'Ultlr:,le
:t.c~t
fi tee;
long outouts, a user °t<J.$~ sr.oui~ :--:ea~
a t t fi o I e ,, e I o t o f f c c t i v e ... e -; s ~ i f ~ ~ i

8y the judlcfoys use
braa.I<
ur.
t o ns poo I "

for
't e x t

soonTstlcatlonJ orovldud µy th~ T~l~tvo~ ~o~cl
Handfsr Task,
It is this t~r~
ot
sro~11
capahlTlt'i that wl 11 t.e Provldao ir.ltial ty•,

~ULTt~rrv

HA~D~ER

PACE:

TASK

t NTERRUPT
SERVI CE ROUT I NE: co~'VENT I o.·. . s
.
.
.
.

••~-••••w•~••••••-••••-••-••••~••••w•
..
,,,.. ...
,')
...
• •
.J
•
•

SpecTal· Characters
The typing of tC shal I

c~use

the TA!etyp~

ServTce
Routlne to tr10.;rnr -t:he
N 0th Tn g ""· I I I b e P. ch 0 e er,
I t w I I I ;:i P;

tr.tern;
!:e~uf\nr.
t f) t h e ~ ·

MCH
Ief t

tasK to have s~t tts~lf ~o key off this v~ri~o!
a n d . p e r f 0 r in Ta g a I i t y c h e c 1< r n g •
c I s t h i c;
t
c o "' s oI ~
Ta I e t y P e 1 ~~ ti at I s f t s s t ~. t q s ? J Th a r e fi l
be no effect on any TTY lnout or _ o~t~yt c~r;rnticr

a·. Th e t y P I ,., g c f

•

' X

Routine

Sorvl~e

device number,
s ta .r t
u o C_v J a

s h a I I c a u s e t ri e T ~ I e t y o ~ Tr1 t e r r 1

oass the ti~~, ~1tP nn~ ~
tho se~d System nirectlv~J
t l"I a ,~ e Qu e s t ~ v s t e ., (') ! r e c t I v t! : a u '
Cvl~

task specified at System
Generatj~n
csr.E~IJ
tir
Th r s
ta s k c o u I d ce u s e a t n , f ~ r c ~ a'~ P I El , ~ I 1 o \-.J •

MCR to run en tne te!etyPe fro~ ~htcn tne tX
tyoect,
Tha
tas ;< rrav
or :n:=1y not bf? r>reso
rl e P a r1 d Tn g on th s I n s t a I I ::l t J o n t s ,, ') e d
f~r
~ u ch
feature,
In any r.ase
tX can ~e typ~d fro~
Te ·1·atype device, ana there wl I I be n~ effect 9n
TTY fnout or outout oper~tto~.

o·

During -...rite ooeratfons, the ty~fng . of tS sh·
cause.
a
+5 to be re.tur.,e:i ln the status word, .
tne tyeing of t~ 3hal I C?usa a +4 t~ oe returnea
we r I a. s t rtm c a t I r"I g t h e 0 I J t 0 u t l n to n e .n ' j ~ I ~ ~ f t '
ll~e~
T~e use' tasK can u~e
tn1s lnforn~tlo~
Cf or exarno I eJ stoc a I ong Pl'I nto~t o·n that •m
?n r~ad : modA, tu w( 11 clear the currnnt
buffer. and echo as CRLf,

Tne

t~oJ~g

shall

cause

th8

eurrent

rP.ad mo-'icJ to ot:? rc+:ype-1 uo tc
eurref"lt Jnnut cnar::\cter,
ThJs all,,....,s :\ cnrifu
buff~r

(if

tyo(~t

tho

e: ••

examJne

e~actly

what ne has tvona I

s~s'tem,

Tnt3 tyof ng of 'l shal I cau~e a hor r zrntat Tar to
ec h o ' d ,
r a g :i r d I ~ s s o f ~ h e t n e r t r A T e I o +: 'i o a o~ v
has a Ho r I z o n ta I TH b h a r ~ ·~ a r c c a o a o I ! I t y ·,
1

f'·,

The

fojlowlng

characters

have

?l '>1ays

t"\eanlngs,
1·1

ALTMODE (23-.S,

echo

375,

on outnut.

f~~thar

~P6J

.. ani:;s

I Irie

fnC'ut.·,

2~3;

~Tl I

conv~rten

eonsole Jnput on the

~anc

output llr

MULTt•TTY ~AND~ER TASK

2•

. 3~

PAGE:

CARR I Ar, C: Rr _T UR M r. 21 5 J .. e n d s I J n o f n ri u t ,

TAB CHOR!20NTAL 1
·~rovfdad

VERTICA~, fOR~
Telet~oe
rlevfce,

fEED1
thay

wf 11·

slrnulated ·.
4~

C377J · - Daletes last
as "\" 1 Tf any prevlnus
. . ~yf fer·, ·
~UBOUT

ch~ractor

ani ac~
ciar~ctors fn u1

MJ.l~TI•1TY

~A~DLER.TASK
:· ···.· .

TeTetyoe Iriterrunt Servf ~e Routll"'e f s that Pir
the hnnrller task rook~d directly Tnt.o ~n
lnterrypt chain! It Js ~sse~ble1 wtth the T~letvc
Mandfel', b~t Js run ln Karnet ~o.1e,
T~e

8 '1,.

T h e t n t e r r ~ p t Se r v f c A Ro u t l n e· 1~ I I I o a s t r u c t u r e d t
. b ~ " L I NEW:\ RE
I n o t h e r ~· o r o s , I t w l 1 I m~- k e •· :--

•tr,

Te letyoe aopea, as a I Tna nev l ce

tne - T~ I ety'

t-'arid!ar,
c~ .

ror each T~!e~YPO nevlce SPeelflcd In th~

PU~

Ctn

- rn a x f ri u m o f
" N'' ,
wh e r e " rJ•· <1 & I ~ t h o n u ~ b P. r c
t e T e t ~ pe d e v i c c s t ti a ~~an o I e r '.oJ a. s a s ~ a.., b 1 e rl
\ o o" t r-·o r J , c3 cont,. o I wor rl s an r! 4 ~· I I n '3 bu f ' c
- tocatJnn~
wJiT be avallab!e fn
the
Teletv•
~and . le,, sot iri the for.T:atl

: STATUS OF

IP SETi

TELETYPE~

OIT rm = CHAR OPERA TI O~-i !N PROGRESS
BIT t.1
RIT 02
RIT ~3

L Fff

OPERATlO~"

l N P~WG[SS

JCd I 'J P~OGl.'ESS (l\TT~C;iE01
= NC'
= l ECHO REQL' 1RE.IJ

BIT ~4 = SET UJ PCS I fI \\~~ r~H CVERPR I 'lT
AI T r5 : CCiJTROl. CHAPACTER 6 E l"I G pq~r:c:ss~o·
r, IT r6
L. I•'~ E IS OVlR

BIT- c-.7 = U"!U
. c; ED.

.
.
.
..
..
.
- --~--~-------------·-·------~·-----·----~-----··,.,

= t-!R t TE" I ~J F'ROGR~S~
= WRITE' F'ILE" tr. pc:ior;~<ESS
: "RE~ 0" Tr. PPO~F\ESS
FH T 11 = U~"L'S Er.

SIT ~s
RIT C--9
OIT 1e

RIT 12

UUJSED
.

.
-~---~~---~--~~-----------------------~·--~-----.

CilT t3 : UNUSED
8IT 14 : PASS AL~ C~~~ACTERS CYO~EJ
8 I T j. ~ : ~Pi 0 l.. E Cl YTE r:; 0 IJ I1 T '·I A'H t: D CM0 f' E 1

CNOTE!

B!TS 0•12 ARE SET

8 ITS
13 .. 15
MODl:.: :\OH'1 I ]

WO 01
SE:Tl

RIT

~z
~2

I~TER~AL

PROV I DF:D

STATUS OF TTY

8 I T 01

RlT

ARE

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