500024 Asynchronous Serial Interface Programming and Use pdf

(1)

teral-G

ASYNCHRONOUS SERIAL INTERFACE

PROGRAMMING AND USE

ABSTRACT

This document describes the features of the Asynchronous

Serial Interface for TERAK Model 8510 data processor systems.

Cable wire lists and switch settings are presented.

Detail

for programming use is also included.

TERAK Publication Number 500024

(2)

. -

.

,-~;~--~~-~---~~--~~--

~~~~~~-~--~--~-; -

.

;;~:NO;-ES O:N:

PROGltAMMING AND USE OF THE· 8510 SERIAL INTERFACE

,

·

,

•

,

·

,

·

,

·

,

·

,

·

,

·

,

·

,

·

,

·

,

·

,

·

,

_•

,

·

,

·

,

·

,

·

,

·

,

·

,

·

,

·

,

·

,

THE

STANDARD SERIAL INTERFACE

FOR 8510 AND 8510A

SYS'l'EMS

SUPPORTS ELECTRICAL'CONNECT.ION TN

ONE

or

THREE

MODES:

20' M! CURREN'r LOOP

t RS-232;C~

-AS

D1T!

TERMINAL EQUIPMENT

t

AND

RS~232~

AS DATA COMMUNICATION EobrPMENT. ONLY ONE OF THESE

CO~NECTIONS

CAN BE MADE AT A

TI~E.

ALL CONNECTIONS AND

CONTROL OF THE SERIAL INTERFACE ARE ON

TRESERIAL EI:B

(EXTEltNAL·

IN'rERFACE BOARD)

t

REPRESENTED

SCHEMATICALLY

:BILOW.-THEXE

AR:E THltEE

CONNECT01tS

AND

SIXTEEN

SWITCHES.

CONNEC!OR Jl

IS'

USED FOR RS-232C

INTERlACE USING

THE' SERIAL

INTERFACE ASDAT! COMMUN·I CATIONS EQUIPMENT.

. CONNECTOR

J2

IS

USED FOR RS-232C

INTERFACE USING

THE

SERIAL- INTERFACE·· AS DATA TERMI NAt

EQUIPMENT.

CONNECTOR J3 IS USED FOR

CURRENT~

LOOP INTERFACE, AND ALSO

FOR

15-232C'

INTERFACE AS DATA COMMUNICATIONS

EOUIPMENT.

TRIS LATER OPTION

(RS-232C

CONNECTION

THRU

J3) "ALLOWS USE

orA

SIMPLER CONNECTOR (NYLON

SHELL TYPE) FOR

RS-232C CONNECTION.

T~E

SIXTEEN SWITCHES

ON THE

SERIAL EI! (Sl

&

52)

CONTROL

ADDRESSING AND CHARACTERISTICS OF THE SERIAL INTERFACE.

i.-; : ~. i f~' i: :.: } 1 y':~; ~ I· ~ .. ~ ;. , I ' } :'.: ~ ;.;. •. : , < ~ o-~::

l·'-...

---..-..;;..---~---~----\

---

-.;.. /..;.

--.--.---I \ ****************** /-

!

I \

******:"

Jl .

****** /

!

I- !

********!

!

l

\******************/

!'*******I 1*******1

1** J3

**!

1

1 \******~ J2

******1

1* SWl *1 1* SW2 *1- !

********1

!

I' . ;.-~·~l.:J.J.:llJ.J.J..~il2.1.L~~.i..L.-..1..:...;.~ ~-,. ".;;.". ; .. : -:-::. : ~. ~.-.>. ; , : ' :-~ .. ; .. > ; . : .. :. ~< .. :.

___ ... __

~ ;. ': ~ : :: ~.:.~..:-.~.:.~ :r;.: -:. : '- , : .:-

______

".~.:: ~_: ; .. ~ :-.: .:. ,

...

: ~ c· t

(3)

P A G1: '" 2

or

9

;

---_._---_.-

...

-_

...

_---,---,-_. ---,----

----~---

...

·

,

·

.'

,

·

,

THIS DOCUMENT ASSUMES FAMILIARITY WITH ANSI SPECIFICATION -RS-232C FOR DAT! COMMUNICATIONS, AND ALSO WITH CURRENT LOOP ::lNTERFACE' TECHNIQ,UES. DETAILED

SIGNAL

DESCRIPTIONS

. W,ILLNOT BE

PRESENTED

HERE. THE READER IS REFEltED TO: .:"TECHNICAL ASPECTS OF DATA COMMUN ICATION" MCNAMARA ,DEC.

;- RS-232C' PIN' ASSIGNMENTS' AND SIGNAL DEFINITIONS CONFORM ; TO THE- ANSI STAND!1tD. THEY· ARE PLACED HERE FOR REFERENCE.

·

,

·

.,

--.---~---~~---~

...

---

...

----

..

.--.-.-.---·

,

'. ,

·

,

•

,

·

,

•

,

•

,

·

,

·

,

·

,

•

,

..

,

•

,

·

,

·

... ",":.

,

.----

'.

.

P1N LIS.lJ.', RS-232C CO'NNECT10N AS DATA COMMUNICATIONS EQUIPMENT. (DCE)

ALL CONNECTIONS TO Jl,

N~aONNECTIONS ALLOWED

TO J2 OR J3.

USE'r.HE FOLLOWING' PARTS, OR EQUIVALENT IN THE CAELE ASSEMBLY:

CONNECTOR, MALE 232 PLUG

CINCH

#

D"B 25P

SHELL, PLUG

CINCH #

DE 5126-1

P.IN # . SIGNAL NAME

.J1 - 1 FRAME GROUND .. J1 - 7 SIGNAL GROUND

J1 - 8 C'ARRIER DETl!CT

"J1 .... 4 REQUEST TO SEND

. J1 - 3 RECEIVE DAT'!

J1'-' 20 DATA TERMINAL READY'

J1 - 5 CLElR TO SEND

. J1: - 6 DATA SET READY Jl-: - 2 TltANSMIT DATA.

IN/OUT

OUTPUT INPUT OUTPU'r

INPUT OUTPUT'

OUTPUT

INPUT'

(4)

PAGE

:3

or-

9

-;.

~-~--~-.-~

---

-

--

...

--.-.-..-.---.

...

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

...

-•

..

PIN LIST"

RS-232C

CONNECTION AS DATA TERMINAL EQUIPMEN'. (DTE)

ALt CnNNECTIONSTO

J2,

NO CONNECTIONS ALLOWED TO

J1

OB

J3.

"USE THE FOLLOWING PARTS ,OR EQUIVALENT IN THE CA:BLE ASSEM]LY:

;

CONNECTOR, FEMALE

232

PLUG

CI NCB

#

D:B 255

; SHELL, PLUG CINCH # DB

5126-1

·

J

·

J • J

·

,

·

,

·

,

•

,

•

,

·

,

e

,

PIN'

#'

SIGNAL NAME

'~J2 - 1, !R'AME GROUND

J2 ... ' 7' SIGNAL

GROUND

.. J2 - 20: DATA -TERMINAL READ'T

-J2, - 5 'CLEAR TO SEND

J2 - 2. TRANSMIT DATA

'J2 - 8 eARlIER DETE,CT

J2, -

6 DATA SET READY

J2'.: -

4 REQUEST TO SEND

"J2~ 3 RECEIVE DATA

, IN/OUT

OUTPUT , INPUT

INPUT

OU'TPUT

, INPUT

;-, ---.---~-~~-~~~~~~~~~-~~-~~~~

e.

,

; PIN

LIST.

RS-232C

CONNECTION AS DAT!

COMMUNrCITIONS

EQUIPMENT. (DeE)

;~LL

CONNECTIONS TO J3,

NO

CONNECTIONS

ALLOWED

TO Jl OR J2.

; ';-US'E'THE FOLLOWING PARTS, OR EQUIVALENT IN THE' CARLE ASSEMBLY:

;'

,'~

CONNECTOR, MALE PLUG

MOLEX

#

03-06-2151

! PINS', MALE CRIMP- USE 15 EA. MOLEX # 02-06-2103

·

,

-r

,-

,

·

,

·

,

·

,

-

,

•

,

·

t

·

,

SHELL, PLUG USE 2 EA. MOLEl # 15-0'4-0201

PIN-,,#,' SIGNAL NAME

. J:)- - 3 ",FRAMll GROUND

J~~

11 !IGKAL GROUND

.J3-

g-

eLEA! TO SEND

J3',-

12'

DATA. SET READY

J3~-

15 CARRIER DETEC!

, J3' - 7L: RECEIVE DATA

J3 - 6

DATA

TERMINAL REA:D'Y

. J3 - 14 TltANSMIT DATA- "

. ; - ,

. IN/OUT

OUTPUT

INPUT' . INPUT

.:,'

,-~-

-_ -_ -_ -_ -_ .T....-~ • __ ••• _ ____ .-..-. ___________ .-... _~_._._.._._.._,

(5)

'PAGE" 4: OF 9

; _ _ _ _ _ _ _ _ ~ _ _ _ _ ~ __ ~ __ ...._~~--_ . _ _ _ _ • A " ' . . . . .

-·

i •

,

·

,

·

,

; •

,

•

,

·

,

·

,

·

,

·

' .

,

·

,

·

,

·

,

·

,

·

,

·

,

·

,

; •

,

·

,

·

,

'.

J

·

,

..

,

·

.

,

•

':

PIN LIST, CURRENT LOOP CONNECTION. I NPUT' AND OUTPUT' CURRENT . 'L;&VELS' (INCLUDING :READE! RUN SIGNAL) ARE 20 MI..

. 'l:r;LCO~NECTIONS TO J3, NO CONNECTIONS ALLOWED '1'0 J1 OR J2. EITHER'

INPUT OR

OUTPUT LOOP MAY BE ACTIVE Olt. PASS

IVE.

.. THE' 221M! ENAJ3LE SOU!CE PIN

MUST

ALWAYS 'BE CONNECTED' TO

!H~20MA

ENA]LE

ET

A

JUMPER

IN THl EXTERNAL

CONNECTOR.

TO'CO"N-NECTEITHER iN

INPUT OR

OUTPUT

LOOP PAIR

IN

! PASSIVE CONFIGURATION, USE THE (+) .. AND (-:) SIGNALS, LEAVING THE . Ass6ctATED CURRENT

SOURCl1

OPEN. TO CONNECT EITlfER THE I'NPUT

OROU'rPUT'LOOP PAIR IN AN ACTIVE CONFIGURATION, CONNECT

THE (-)

SIGNAL

TO' GROUND WITH! JUMPER IN THE

EXTERNAL

CONNXCTORt'USE~THE (+)

SIGNAL 15

TH~

(-) SIGNAL

IK THE

EXTERNAL CA~LE9 AND USE THE ASSOCIATED CURltENT SOURCE AS T'BE (+)

SIGNAL

IN THE'

EITEl'tNAL CABLE.

NOTE TH!

T

:SOTH.

ONE.

'~ol'

NONE

OF THE TWO

CUR!EN~·LOOPS MAY'

Ii ACTIVE

OR PASSIVE.

· TU·1tiEADER RUN SIG'NAL IS -ALWAYS ACTIVE (20 MA. ~> RUN)

USE,

'l'HEFOLEOWING'PARTS,

OR EQUIVALENT IN THE

CA:BLE ASSEMBLY: CONNECTOR t MALE P~LUG MOLEX # 03-06-2151

P1NS, MALE CRIMP

USE: 15 EA.

MOLEX·

# 02-06-2~03

SHILL,

PLUG USE 2 EA. MOLEX # 15-04-0201

PIN #. SIGNAL NAME

J3 -' 1 -

r:

LOOP ENABLE

J3 -'4 1·

LOOP

ENABLE

SOUltCE

· J3' -2~ .. f.;..) I LOOP OUT ':'J3 -, 5 .«+) 1, LOOP

our

J3·- 6 . 'OUTPut CURRENT' SOUltCE

J3" - 10 (.;..) I LOOP IN

.

J~'- 13 (+). I

LOOP' IN

· J3 ~"14 'iNPUT CURRENT SOURCE

J3- 9 (+)'READER RUN

J3: - 8

(.;..) READER RUN

J,3 -' 3 SIGNAL . GROUND ... J3 ~ l.L~zS-IGNAL·

GROUND

PASSIVE NOTE

JUMP TO

4

JUMP

TO

PIN 1

(-~) IN C'ABLE

(+)

IN CABLE

NO CONNECTION

(.;..) IN

CA:BLE

(+)' IN CABLE

NO CONNECTION

ACTIVE NOTE

JUMP

TO

PIN 4:

CAJ3LE

(+) IN CA]LE

.. j .. _-_ ... _. --.---,-:---.~---~-. ---~------... -...

·

,

-.-·

J.

·

..

,

•

,

-... ~.

D.R.l.WING 800020, IN' TlIE APPENDIX •.. P1'f.E'SEN'rS· ! PI N DIAGRAM OF J3, 'TYP1.C1L ·INTERFACE CIRCUITS,. AND OTRElt INFORMATION PERTINENT

TO~THE cUltltENT LOOP INTER:rACE~

(6)

PAGE 5 OF' 9

; _ _ _ _ _ . - . - _ _ _ _ . _ . . . _ _ _ _ _ ' _ r _ _ _ _ _ _ _ _ .;.._ .... ~ Wa.;. _ _ _ - . . . -.. ~:.;..~~- _ _ ~~-.-~~ .

·

,

·

,

·

,

.

,

·

,

·

,

•

,

.'

,

•

,

"

.

,

e

,

•

,

·

,

·

,

.

,

'

·

,

·

,

·

,

.'

,

•

,

:

.

,

·

,

·

,

·

,

·

,

·

,

e'

,

'-. 'f-;"· : \, ...

SWITCHED

CON'TROL

CF:"TBE SERIAL INTERFACE' FUNCTIONAL

CHAltACT11IS'riCS IS EXERCISED THltU SWl AND SW2 (SEE' FIG.1).

, T,HESE SWITCH :BLOCKS CONTA',IN'

SIXTEEN SWITCHES.,

THE

DIRECTION OF' SWITCH'ING TO THE ON OR, OFF STATE MAY VARY t lND SHOULD BE

CRECKED :BEFORE

SETTING

THE

SWITCHES. SWITCHES SHOULD NEVER

:BE'CHANGEDWHILE THX

DATk PROCESSOR POWER

IS

ON.

THE

SWITCHES 'A.!E'REFERENC"ED 13Y NUM:BERS Sl THRU S16, LEFT TO RIGHT.

''rllE:llt'-':FUNCTIONS ARE AS FOLLOW'S: '

, UN·I'r'<SEtECTI'O~, ••• SWI'l."CHES:· tTRltU 4. THESE SELECT ONE OF EIGHT 1/:0' ADDRESSES FOR 'THE CO'NTROL AND STATUS REGISTEE, AND

. DATA REGIST'ER OF THE SERIAL INTERFACE. UN IT 0 OCCUPIES THE

J.DD!ESSE~S NORMALLY USED AS Tn CON SOLE TERMI NAt FOR CONTROL OF'" THE" OPEltATI NG SYSTEM. THIS SHOULD 13E SELECTED (NORMALLY) ON't:Y- IF THE SERIAt IS TO BE USED TO INTERFACE THE CONSOLE

c~~'E:RfotI.NAL.· THE FOLLOWING' TABLE' COVERS THE SWITCH PATTERNS •

S1

S2 53 54

UNIT

#. _I/O

REGISTER

_INTDRUPT _ViCTOR

BASE

ADDRES'S

"BASE

ADDRESS

--

-.:

....

~ ,

---_.

---OFF.O~F ON O~N

.

"0':-: -. _1775'60 ₆₀ - ON, .. OFF ON OFF 1":-·' 1:7752e 120

ON

OFF OFF

OFF 2'·,:···· .. 177530 130

'OFl eFF' OFF

OFF

3 177570 1510

, ON _'ON ON

orF

4 176"52" 320

.ON' ON

OFF

OFF 5-' 176530 330

orF' ON' ON OFF "6, 1765:60 340

"on'ON ,OFF _OFF 7' 17:6570 350

(7)

--.---~---·

,

·

•

,

•

,

•

,

·

,

•

,

•

,

·

,

·

,

•

,

, ;

·

,

·

,

·

,

;' •

"

·

,

.

,

•

,

'.

,

·

,

.,

,

·

,

·

,

·

,

·

,

';

·

'

,

'. ,

·

,1 'e,

,

·

,

·

,

·

t

.,

,

CHARAC'TElIS'llCS: S;WI'r.'CRES: •• SWI'rCHES'" 5' 'r1i1tU"S. THESE MAY' BE SET

TO, ANY PATTE:RN. THE SETTING OF THESESWITCRES WILL :BE AVAILABLE

";,IN"BOTH THE RECEIVE! STATUS REGISTE1t AND THE TRANSMITTEI

~ST.lTUS:·REGISTER OF THE SERIAL INTERFACE, TO BE USED

>

AS' REQUIRED BY THE I/O SOFTWARE. TYPICALLY, 'rH'ESE WOULD IDENTIFY

THE~' T,IPE OF,' TERMI NAL OR MODEM ATTACHED, OR CAN BE USED TO ENCODE

l ' "S.TATION NUMBER" FOR CLUSTER§

OF

8510 SYSTEMS ~

NOTE 'THAT A

SWITCH SET

TO THE"OFF"

P9,SITION GENE~ATES

A "ONE"

!IT.:' TN :BOTH STATUS' REGISTERS (AND"·'·ON t GENERATES" f ZERO~·) •

SiW.ITCR #

5' :,

6·; ,

":7:" 8' ::,-,

BIT # (STATUS REGISTER)

11 10 g';"

8~'

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

HUM:BER

OF

:BITS ••• SWITCH 9"~' TRIS· SWITCH SELECT'S THE NUMBER OF :BITS

'USED IN THE SERIAL ASCII CODE. AS:

ON

OFF

7 EITS 8

BITS

, < ~ARITY ENA:BLE~ ... SWI'rCH 10';-- TRIS' SWITCH ENABLE'S' T.RE TltANSM I 55 ION

'::07' 'P,ARITY, Olt. THE: TRANSMISSION OF-!' 9tSPACEft FOR THE PARITY' BIT.

OrtINPUT,

THIS

SWITCH

ALSO ENABLE THE

VERIFICATION

OF PARI'I'Y, ,SETll,NG AN ERRORCONDITION,: IF ENABLE'D'.

PARITY IS

ACTIVE

PARITY

DISABLED'

TTl :FILTER~ •• SWIT'CB: 11.' THIS SWITCH CONNECTS THE NOISE FILTER 'F'OR SUPPRESSION OF, TRANS lENTS' WRILE DRIVI NG AN ASR33 TYPE'

TELETY'PEW1fT1rER USING THE CUR1tENT LOOP

INTERFACE.

THIS SWITCH

MUS'r,'BE OFF EICEPT WHEN DRIVING' SUCH A TERMINAL

AT

LOW DAT!

SPEEDS·',.{TYPICALLY 110 BAUD).

ON

OF1'

(8)

PAGE 7

OF

9

-; ---.-~

...

--~-,

·

,

•

,

-

.

,

·

,

'

-..

,

PA:RITY;: •• SW-ITCH 12.'rRIS SWITCH~' IS ACTIVE' o.NLY IF PA! ITY IS

ENA~LED':SY SWITCH

10.

EVEN o'R

onD PARITY

FOR

BOTH

TRANSMISSION

. ·AND.

RE.CEPTION OF DATA. IS S·ELECTED A.S: ON

-._011

..~~---.---~-~--onD

PARITY EVEN PARITY

; " ... "- ,'. DATA ltl .. TE •.• ~ SWITCHES: 13 if·!R·n 16. TRES~ SWITCHES SELECT ONE

.j "'-"':'01 TlIEFOLLOWING F·dUltTEEN-~DAT!.ltATES FO! :BOTH TRANSMISSION

•

,

..

,

•

,

.,

,

-•

,

·

,

·

,

•

,

·

,

·

,

·

,

·

,

·

.

,

. A.N·D REC'EPT'ION OF' DA'rK.·

THE

TWO REDUNDANT CASES ARE INCLUD'ED. 8.13' S·l4.' 515 S16

ON ON - . ONO!! -' .ON ON· - OFF OFr

OF'!" OFF ,orF OFF. O'FF'

ON

ON ON " eIY'OFl ON o.rr

.,,~"; OF! ON OFF ON OFF"OFF OFF ON

o.FF'

ON

ON-

OFr

. ON

orr

OFF OFF ON ·"<).FI ON orF

OFFON OFF OFF

OFioFF

ON

ON' OFF

OFF ON

'. ON

OFr

ON ON

ON .

ON

c • 0 N 0. N

ON -- ,,(n-l' . OFF ON

DATA RATE. :BAUD

50 75 110· 134 150 - 200 300 600 1200 1800 2400 2400 4800 9600 19200 19200

(REDUNDANT)

,~- -- -. ,

; ~.---~~~-.-~.---~~"""-~--'-'~"'---"-"--'---'

.-,

.

,

·

,

·

,

·

,

·

,

·

,

.-,

·

,

·

,

·

,

·

,

·

,

·

,

·

.

,

·

,

.:-

....

WI'l! TEE: S.EltIAL IN'rE!Fl.CE' ET! SW IT"CHES SET COltREC Tty FOR THE

EQUIPM'EN'r

TO BE INTEFACED, THE SERIAL IS PROGRAMMED INTERNALLY

:BY

AD-DltESSI.NG THE FOUlt IiC·-·R.EGISTERS' AT THE SEQUENTIAL

WORD

ADDRESSES STARTING

AT

THE·nI/O BASE ADDRESS" FOUND

IN THE

UNl!'

NUM'BER TABLE

A'BOVE.-ALSO,

THE

INTERRUPT VECTOR

ADDRESS

PAIR

(ADDR:iSS' AND

STATUS

WORDS~)' OCCUPY. FOUR WORD IN

LOW MEMORY

STARTING

-13"

THE;: ""C~OR :BASE ADDRESS'" FOUND IN' T'HE UNIT' NUMBER

TABLE

ABo-VE.

~~~~.s,., UNIT' 1 OCCUPIES FOUR ADDRESSES" IDENTIFIED AS FOLLOWS: RE'CEIVER STATUS REGISTER (RSR)

RECEIVER

DAT!

BUFFER

(RDB)

. TRANSMITTER STATUS REGISTER (XSR) T·RANSMITT.·ER DAT! BUFFER (IDB)

177520 1'77522 177524

177526

RECEIVER VECTOR ADDRESS

TRANSMITTER VECTOR ADDRESS

-- - .

---~~

...

---~---.-...--.-~...-.---.-120

I

122

(9)

, PAGE' 8 OF 9

j---,;. .--;'---.---::-~~-.-...~ .. ----.;;.---~.-...--.---..

----·

J

·

,

·

,

·

.

,

·

,

·

,

·

,

·

,

•

,

•

,

·

,

·

,

'.

·

,

....

·

,

·

,

·

,

·

,.

·

,

·

,.

·

,

•

,.

·

,

·

,

·

,

·

,

·

,

;

·

,

.

·

,

·

,

·

,

·

,

·

,

·

,

·

,

·

,

·

,

·

,

·

,

RECEIVER

STATUS IEGISTE! CON~AINS

ERROR

INFORMATION. THE

SETTING

or

THE EIB CHARACTERISTICS

SWITCHES,

AND "DONE",' "INTERRUPT

";ENABLE''', AND

"READER RUN"

:BITS.

THESE ARE

DEFINED BELOW:

RECllVER

STATUS

REGISTER :BIT MAP

ALL' ~ITS'

ARE

READ-ONLY

UNLESS

OTHERWISE' NOTED

BIT

#'

:B I~ # ....

B'IT #~ ,

:BIT #

BIT

#

. BIT #

BIT

#

.Bl!·' #' ,- . :BIT #

:BIT#' BIT #

:arT

#

B,IT #

BIT #

:BIT #

"

;1

-:2: .

3' .:

,,:.

' 5 6 7' 8 9 10 11 12 13 14 15

~

<----

READER RUN (WRITE ONLY) .

~

]

.J

<----

IN'rE!RUPT ENA:BtE' (READ AND WRITE)"

I

<--_.

DONE"BIT

.]

(-\

\

] <- \

\CHARACTERIST'ICS'

] <-

II

SWITCHES (EllS)

] (-/1

.

] (--- OVER!UN ERROR

] ( - - - . :BREAK DETECTED

]

<~--- PARITY ERROR DETECTED

] ( - - - ERIOR'

(INCLUSIVE

OR OF

:BITS'

14, 13, 12)

WHEN A

CHARACTER

IS RECEIVED, THE

DONE :BIT WILL BE SET.

-:. IND.1C1TING THAT THE DATA IS. AVAILA:BLE

IN

THE

RECEIVER

DATA :BUl'FER.

',~ ONLY" 'THE LOW ORDER 7' BITS

·or

THE DATA BUr!ER ARE

VALID.

':";,11 TnrINTEltllUPT ENABLE BIl' HAS :BEEN YREVIOUSLY WRITTEN

.. ON·, iN INTERRUPT THRU THFR'ECEIVER" VECTOR ADDRESS WILL BE

REQUESTED.

IF AN ERROR CONDITION. IS" 'DETECTED', THE ERROR BIT AND. THl1 nONE BIT WILL :BE SE.T, AND AN. INTERRUPT REQUESTED',- IF ENABLED. THREE ERROR

C.ONDI-TIONS

ARE DETECTE·D:'·· ':.,

OVERRUN -

NEW

D!T~

HAS

!EEN

RECEIVED AND PLACED INTO THE DATA BUFFER ~EFORE THE PROCESSOR ACCEPTED

THE' PREVIOUS DATA. CURRENT DATA

IS VALID.

:BREAK - 'rHESERIAL INPUT LINE WAS IN A

CONTINUOUS

'"t1ARlf-~·',CON]JlTION. THIS IS USED SOMETIMES 1S A

REVERSE·. CHANNEL TO' REQUEST DATA' TRANSMISSION.

. IY

CIKALSO

INDICATE

AN OPEN LINE.

PARITY - A ·PARITY~ ERIOR WAS DETECTED ON

THE

RECEIVED DATA.

WHEN A" CH!ltACTER IS

REeE

I

VED ,.

TRE

READER

RUN ]

IT

I S

CLEARED.

V·BEN THE READER RUN BIT IS'· SET ON, A LI NE

IN

THE CURRENT'

LOOP

INTERFACE'-rrr

ASR33 TYPE TEtE'l'TPEWRITTERS WILL ENABLE THE BUILT~IN

PAPEltTAPEREADER TO READ ONE

CHARACTER. TO READ PAPER TAPE

.. C'ON'lINUOUSLY, THE READER RUN BIT MUST BE SET FOR EACH CHARACTER •

. :,·WHEN! SYSTEM RESET, POWER CYCLE, OR' RESET INSTRUCTION OCCUR,

T.HE'DO.ME :BIT WILL B'E CLEARED. IF THE- INTERRUPT ENABLE BIT IS SET WHILE THE DONE

BIT

IS CLEARED, NO IMMEDIATE INTERRUPT

·,·W'ILt OCCUR. IF

THE INTERRUPT

ENABLE

BIT

IS

SET WHILE THE DONE :BIT IS'SET, AN:

IMMEDIATI

INTERRUPT WILL ]E REQUESTED.

(10)

-.;---.:0---;---PAGE 9 0]' 9

,

;

.-';' ';';'"

---,..:-

-.' --~-..::..:..---..;.;.;;.--.:..---~--

---·

" ,

• 7 ;

.'

,

.

,

'.:

,

·

,

·

,

.'

';,

"

•

,,'

·

,

·

,

, ,

.

,

·

"

·

,

·

,.

..

,

·

,

.'

,.

·

,:.

·

,

·

,

·

,

·

,

; •

,

'-e

,

·

,

·

,

·

,

•

,

·

,

•

,

'TRAN'SMlTTER STATUS RE:GISTER CO'NTAINS ERROR INFORMATION, THE SETTING

, or"

THE EI! CHARACTE1tISTICS SWITCHES, AND" "DONE" " --INTERRUPT

ENABLE", AN !REAK

TRANSMISSION CONTROL ~ITSe

THESE ARE

DEFINED ]ELOW:

fiJ..NSM-ITTER STATUS· REGISTER BIT'MAP

, ALL ,.:BITS ARE READ-ONLY UN'LESS OTHERWISE NOTED

, BIr,.# 0· ] <~~ TRANSMIT CONTINUOUS BREAK (WRITE ONLY) BIT. # -;" 1~ , ]

BIT' # 2 . ] ' .'BIT # :3 ]

B'IT # 4' ],

:SIT # 5

1

iIl'#' '6

1 ( - -

INTERRUPT ENA:BLE (READ AND WRIT'El

:BtT~ # . 7,

J.

<---

DONE. :BIT

:a,I'.r·~ #" 8

'T'"

<~\

\

.. :s·rT' #'

9

] '(- \ \

CH!RAC'l'E'RISTICS

BIT #,'10 ] <~:I/ SWITCHES lEI!)

BIT' # 1 1 ] <~I

/

:arT, # 1 2 ]

:BIT # 1 3 ] BIT # 14

l

:B·IT # 1 5 ] (---ON .;;..).' MODEM READY

,J..:, CHARACTER' IS' TRANSMITTED WHEN THE TRANSMITTER DATA BUFFER IS ,,-,: ·:"W1tJTTEtf.' TRANSMISSION IS CONSIDERED COMPLETE WHEN THE SER IAL

"'~"~B1T' S:TliEAMHAS :BEEN COMPLETELY GENERATED. 'rHEN, THE DONE BIT WILL:BE'SET ," INDICATING' THA'!" THE TRANSMITTER CAN ACCEPT ANOTHER CRAR!<C.TiR. ONLY THE"LOW' ORDER 7 13ITS OF THE DATA :BUFFER ARE VALID. 'IY7' 'lliX',INTERRUPT ENA:BLE'BIT"HAS BEEN PREVIOUSLY WRITTEN ON,

'AN' tN!ERRUPT TERU

THE TRANSMITTER VECTOR ADDRESS

WILL

EE

REQUES'rED.

·THE MODEM READY· BIT IS THE

REVEISE

LOGIC OFTH'E RECEIVER ERROR ~ITS:: ON SAYS THE MODEM IS READY'. THIS BIT

DOES NOTGENERATE'AN

INTERRUPT. IT IS GENERALLY A STATIC

',!'NDICATION'THAT A MODEM ,IS PRESENT AND CONNECTED TO THE SERIAL ·'I'NTE1lFAClf.

,TRE.:"TR~SMtT

CONTINUOUS BRE!X" BIT, WREN SET ON, WILL

, DO JUS'r' TRAer. THIS IS' USED" TO INDI CATE AN INACTIVE STATE TO THE ne'Er.VER·OF THE' TRANSMITTED DATA. THE BREAK STATE WILL :BE C:OKTINUOUS UNtIL THE !IT IS' CLEARED OFF.

"j WREN!. SYSTEM RESET, POWER CYCLE, OR RESET INSTRUCTION OCCUR, ; '-~HE:DONE !I'r' WILL BE SET e' IF THE INTERRUPT ENABLE ]IT' IS SET ; . WHtLETHE DONE :BIT IS CLEARED, NO IMMEDIATE INTERRUPT

; WltL"OCCUR. IF THE INTE1tRUPT' ENABLE BIT IS SET WHItE THE :CONE :BIT

; IS'" SET ,AN· IMMEDIATE INTERRUPT' WILL· :BE REQUEST'ED e

·

,

;

---

----

...

~--

-

-~---.--..---~

..

----.-

...

---

...

---; TERAK CORPORATION

(11)

I ;

!

I

!

I

J~ VIEWED FROM

RERR

OF

8,)lO

J~-

DESc..R\Pl\ON

\N?U1

E1R

E\~

"?\N

c..URRENT - LOOP

ErA

R~-Z~l"C.

AS DeE

QUlfU,

C.~1

I

I LOOP

EN\\~lf

1.

(-) 1 LOD?

OUl

! I

"3

SlGN~L

GRDUND

I

FRAME GROUND

J:t"

I

1.

LOO?

EN~~Lt ~URtF

I

,

l.'f

j

[

t-t)

I LOOP OU1

I

5

,

b

OUlllUT

CURR ENT

50URc..E

D

H1~

TERM

\)\1

Ptl

REA 'U't

I

c..o

10

-7

RECE\'lED

\)I-\11\

0

5B

3

I I

l

8

t-}

,RfRnE-R R\JN

I

~

(+) REl\\JER RUN

I

c..LERR TO

~EN\J"

0

c..~

5

I

(0

l-) I

LOOP

IN I I i I

I !

51GNI1l

!

I

II

G

Ra\JN~

I

51(; N~l GRDUN\) P\~

1

_i

12.

D~l'" ~El

REI\t)'<

0

tc.

~

1

;

I~ (+)

1 lOOP \ N"

I _i

I

1'1

INPUT

C.URREN1

:;DURt.£--, TR\\N S \'\

\\\E\)

\)l\1

P\

I

~

'2.

! ! _I

IS

U~\~ L~RR\ERUE1ECl

0

CF

I 8

I

E\

t:\

-POS\1\\JE

VOL1\\GE

EGl)~L~ ~lNt\R,{

IERO'tSPf\C.E

O~

NE(;{\l\~£ ~o L1~GE

EOU\\lS

&\~~~'<

ONF ,

t'\1\~\,:aFF

800020

"TERf\\,

lORPDR{:\\ \D~

S~\O ~\NG

LE

'5ER\~\L

J~ (JjN~EC.

TOR..

'bR\

\-\i~

J.

oENIl\L

5-/&·lb

Y-2.S-7S

(12)

IO~ I/"W

-+- Il..v \

G)

I LDO?

E~~olE ~Otj\,c..t

I--II~---I I

1 lOO?

EN~~L\::

IN'-IlLf~

\ - - - - + - - _ e _ - . . . . J \ . - - - - i / Y 'N~\}1

c..uRR£NT

SOUR.lF

. . . - -_ _ _ _ _ - - - J

'_-01"

au \

P

\J

1

C.JJ

~tE~

\

~o

Utlct;:""

~-~ _ _ _ _ f\---____4I _ _ _ _ _ _ _ - - - - I 5 (+)

1 LOO?

OUT

INYI'i&

~~---~--~~2 ~)I LOO~

QU1

Z'iO;.-. Y4W

lN4\,,\B

L.(701)\ '/l..W

lOD~

IN

LDa~

IN

~--d'--___ ---~ B (-) 'RE~\J£\l ~UN

8DOOlO

TER.

~K l.DR.~D~~1\

ON

B

&) \

D

~

\

\\l

G l ESE R \

~.\_

CURtENT LOD?

\N1ERr~(.c

5R.U\N

~, ~~~1.\:\'t

5-18-1{' 4·ZS-78

(13)

I LOOP

ENc\~Ll:: SOU\'lCE

:J

. 1.

LOOf

EN~~lt:

OU1?Ul

c..OR\t£t'\1

SOUl.t.E

@

(,.) I

LOOP

QU,

®

+ }

l)Ul

PUl

_

Tt3 TER

t'\

\NIX l

---(-) I

LOOt>

OU1

:J

':>I~N

1\

L

G

~OU~\)

I N rUT

c.

U\llEN1 ~l)Ol(~ _\L.,'I 'f)

(t)

1

LD(J~

IN

CL~)

+ }

ll'-lPU1

_

F RDtJ\

TEKM\\~f\l

r

-(-) 1.

LOO\'

IN

@J

S\GN\\\' ~lOU~t) _(tI~

(+)

\{'EF\tER.

tUN

(q"

j

, .. -....

(-) RE\\\)ER.

tUN

(§)

____ +_}

KEI\'DER RUN

FULL DUP lE)\

(OR~EN1

WOP

l~lER.t{\l~

F\

C.1 \

\J

E

c...o

N F \ G

lJ

tlt\ \"

\0'"

(14)

I LOOf

Et\~~L~

S6U\llE

:J

1 LOO? E N

f\~LE'

(+)

1

LOOP

aU1

®

~

I

(-) 1-

LOOf

OU1

CD

(+)

1

LOOY

iN

@

+}

(-) T

l()()~

IN

@

(+)

KEf\bER..

tllN

@

: I

(-) R.E (\ \)

t

L

~lJM

®

FUll

\)~~lEl CJJRt£~l

LODf

Il\\l

(~F~lF

P\\S~\\Jc LD~t 'ttLHl~1l0N

(TERM\t-\t\l

SOrPLlGS CUlULEN1

~llE")

OU1~\)1

10

1ER~\~~l

\NP\J1

l=lt}tt\

1£~~

\ \\\

~

L

(15)

NOTE

SWITCH SETTINGS ON THE VIDEO EXTERNAL INTERFACE BOARD (EI8)

AND SERIAL EXTERNAL INTERFACE BOARD ARE PRESET PRIOR TO

SHIPMENT.

THESE SETTINGS SHOULD BE VERIFIED DURING SYSTEM

INSTALLATION TO ASSURE PROPER SYSTEM RESPONSE:

VIDEO EIB: Switch #lis not used at present and is set in

the OFF position.

Switch #2 should be set to the OFF position for

SYSTEM CONSOLE use·with the

8532

Display/Keyboard

(177560)

SERIAL EI8: Switch Positions are preset as follows for Unit

#1

Switch

.1l. • ₁

7T •

2

3

4 5 6

7

8

9

10

1 1 1 2

1 3 14 1 5 1 6

ON

J

OF.F

ON·

OFF

ON

J

ON

ON.

OFF

ON

J

OFF

ON

UNIT

1

NOT

IN

USE

8

bits "(Data)

NO PARITY

NO TTY FILTER

EVEN PARITY

(16)

·.... :

-' .•. • - -1

/

0 ••• - - " , _ _ :1

f"l _~..- ; . . . -- _ . .:~.:- : ~ .... -~ L \-. ." :;. -

II

. . ...

: • • -~. 0 o · . : / - -•

,-NOTICE

FIRST

J

REMOVE THE END- CUSHION PANEL CLOSEST TO THE REAR OF THE

UNIT (SEE FIGURE

1)

BY GRASPING WOOD PORTIQN AND BY PULLING

STRAIGHT UP.

(17)

NOTI

CE .

FIRST~

REMOVE THE END- CUSHION PANEL CLOSEST TO THE REAR.OF THE

UNIT (SEE FIGURE

1)

BY GRASPING WOOD PORTIQN AND BY PULLING

STRAIGHT UP.

REMOVE SYSTEM BY SLIDING THE UNIT TO THE REAR AND LIFTING

. STRAIGHT UP HOLDING BOTTOM OF CHASSIS AT THE FRONT AND REAR.

INSURE THAT SYSTEM TERMINATOR (BECKMAN

#699-1-R150

RESISTOR

NETWORK IS INSTALLED IN

8510

CHASSIS.

TERMINATORS ARE

INSTALLED ON

8510's

AT THE

FACTORY~

LOCATED AT THE LEFT SIDE

OF DAISY CHAIN CABLE CONNECTOR.

DEVICE MUST BE INSTALLED HITH

BLACK DOT (PIN ONE) AT THE BOTTOM.

PIN NUMBER SIX HAS BEEN

500024 Asynchronous Serial Interface Programming and Use pdf

teral-G

TERAK Publication Number 500024

CO~NECTIONS

CAN BE MADE AT A

THE' SERIAL

INTERFACE ASDAT! COMMUN·I CATIONS EQUIPMENT.

SHELL TYPE) FOR

SIGNAL

. W,ILLNOT BE

PRESENTED

CINCH

P.IN # . SIGNAL NAME

J1 - 5 CLElR TO SEND

INPUT OUTPUT'

OUTPUT

"USE THE FOLLOWING PARTS ,OR EQUIVALENT IN THE CA:BLE ASSEM]LY:

CONNECTOR, FEMALE

; SHELL, PLUG CINCH # DB

SIGNAL NAME

'~J2 - 1, !R'AME GROUND

GROUND

.. J2 - 20: DATA -TERMINAL READ'T

-J2, - 5 'CLEAR TO SEND

J2 - 2. TRANSMIT DATA

'J2 - 8 eARlIER DETE,CT

"J2~ 3 RECEIVE DATA

CONNECTION AS DAT!

; ';-US'E'THE FOLLOWING PARTS, OR EQUIVALENT IN THE' CARLE ASSEMBLY:

CONNECTOR, MALE PLUG

! PINS', MALE CRIMP- USE 15 EA. MOLEX # 02-06-2103

11 !IGKAL GROUND

, J3' - 7L: RECEIVE DATA

. IN/OUT

OUTPUT

OUTPUT

'PAGE" 4: OF 9

INPUT OR

.. THE' 221M! ENAJ3LE SOU!CE PIN

ENA]LE

SIGNAL

PIN #. SIGNAL NAME

SOUltCE

J3" - 10 (.;..) I LOOP IN

LOOP' IN

(-~) IN C'ABLE

IN CABLE

(+)' IN CABLE

NO CONNECTION

ACTIVE NOTE

JUMP TO

( + ). IN CABLE

CAJ3LE

SWITCHED

CON'TROL

. DATA REGIST'ER OF THE SERIAL INTERFACE. UN IT 0 OCCUPIES THE

REGISTER

TO, ANY PATTE:RN. THE SETTING OF THESESWITCRES WILL :BE AVAILABLE

NOTE 'THAT A

BIT # (STATUS REGISTER)

OrtINPUT,

SPEEDS·',.{TYPICALLY 110 BAUD).

onD PARITY

.,,~"; OF! ON OFF ON OFF"OFF OFF ON

OFFON OFF OFF

TABLE

. TRANSMITTER STATUS REGISTER (XSR) T·RANSMITT.·ER DAT! BUFFER (IDB)

TRANSMITTER VECTOR ADDRESS

, PAGE' 8 OF 9

RECEIVER

";ENABLE''', AND

"READER RUN"

ALL' ~ITS'

UNLESS

:BIT#' BIT #

] (--- OVER!UN ERROR

] ( - - - ERIOR'

(INCLUSIVE

-:. IND.1C1TING THAT THE DATA IS. AVAILA:BLE

RECEIVER