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DETAil A 8 PLACES

K£ HOT£"2 .

$E£ NOT.

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DIGITAL EQUIPMENT CORPORATION MAYNARD. MASSACHUSETTS

MADE 8Y G. GIANOULIS DATE 6/12/69

PARTS LIST CUECKED ~ ~ ISECilON DATE ,/1..7/' fI 1

ENG / _--;- ; / .,~ DATE - /

PROO ~_ ((, 1./ ISSUED SECT. DATE ~ ...... ,j~,' ~{~. • ~

ITEM NO DWG NO. / PART NO.

1 9009428

2 9107560-1

3 9107256-09

4 9105740-4~

5 9105740-66

6 A-DC-7406371-0-0

7 D-AD-5404491-o-0

8 5508153-01

9 K-WL-TC~8-~-14

10 A-WT-700b394-0

11 5508153-02

U 9006073-01

13 9006669

14 A-DC-7411881-01

15 3100040-0-0 16 9905016-4

TITLE

WIRED ASSY TCi1a

DEC fORM NO , ORA 110A

DESCRIPTION

BUS STRIP ~/R

22 ~WG BUS WIRE !\/R

t:22 TUBING TEFLON WHITE ~/R

30 AWG SOLID KYNAR INS WIRE YELLOW IVR

30 AWG SOLID KYNAR INS WIRE BLUE ~/R

LOGIC FRAME DECALS ~/R

11'Hl MTG PANEL 2

BAR, ATTACHING 1 WIRE LIST Tc08 REI AwT REVISION STATUS REE

BAR, ATTACHING 1

SCREW, PPH 10-32 x 1/2 4

WASHER FLAT 4

DECAL LOGIC ASSY 1

PACKAGING INSTWJCTIONS REI' COMPRESS-o-CARTON 1

IASSY NO I ~AD-7006394-0-0

IsHEET 1 OF 1 J 015T J 1

QUANTITY /VARIATION

I

NUMBER

7006394-0-0

1 J I f

I

I REV EGO NO

C TC/18-lOOC29

I I I

' ............. 8fId IPK~ -. - - ~ of Ootobl [Q_nt Cotoont_ l ~ WI! "'" 1M NjItOduced or COjIOed or _ 1ft _ 01 1ft ~., •• __ for_ -..ufactu .. "' .... of ___ ,_

DRAWING INl'f AUTOMATIC WIRE TESTER (AWT) REVISION STATUS ,. IRe ~-

NUMBER T9 T T t-

K-WL -TC08-~-14 T T T

O-AO -7006394-0-0 A 8 C cC;

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.STUSlOON REVISION STATUS 81ik 8 AWT

t- 0 r!:: ~;;{' NUMMa I

It[Y

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7

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DEC TlPf ClNTItll IHIA-TCJ~~-J

IlMi

DEC TAPE COIIT~l IHIA-TClt)-A-3

5)Kl

6 7

lOOtER CJICTRQt I '" _"'t-c

IHI"-~-(-\.. f IN:lICAlal< PANEl 1

ASS' (fl.)l)) C-AC-l:l~Sl3\-5-0

I

~ H liGHT BllARD' I ~ CABlE ASS'

E -"-n06409-5-0

~ __ ---+-~_--L-I ... ~ Pl.l ,:,sSY ASSY TYPE H721 A

I

O,STPI6UTION )1 FJ.N HOUSltlG f PO· ... ER Sl.PPLY I D...o-7Ov~:~V-O E-AD-1005474-C- D-uA-H7ZI-A -0

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I DEC TAPE CONTROL D-lIA-TCH-3-:l \1 I I tEC TA'E CO~T A-'l-TC08-B t-~C TAPE C~Tw.)l o-UA-TCH-A-J I DEC TAPE COIIT A-lIl-TeaS-A DEC TADE C:lNTRal (~l) A-Pl-TC19-J-3 I I 0 L~TROl IJ,-.8S-TCQ9-J-1

c.utE nuAt IIYlAR 11933-(2) a)31 IHJA-6COSC-3-0 STATUS A' 0-65-TC38-3-2 I I TO !if"! IJ,-.8S-Tt09-D-3

, Fl AGS 0-85-TC08-D-4

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H911 IfTG PAlin HIli I IT' DANEl < PI )

1943 CASlING PLUS PillS 19.0 CASilN~ PLUS PIIO$ (I'll 1143 FRAlIE CASTING

INO PillER SUP;>I' 116 INO POtER SUDI'll 11 € ("11

POIER CllHTR:JLE54 -C P:J~II CONTRJlt54-'::: lPl)

IIIllICATOR "AIIEt ASS' (TCJ8) IIdlICA:JI! PANEl aSSy (Tt~~) ("I)

lIGm BOARD' CAatE ASSY

POIEIl COH TROl 5" .. -I' '":aill C:l!ITI'OLe:c4-t (Pl)

>{721 ":ItER SU""I' H721 DOIER SU .... LY ("l)

IIJtEIl SUPPLY TYPE H721A

"aeu SUD;>l Y TYi>E ~ 7214..,)' )

'1dl'~TDR ;oAKI' (Tt)~)

'NO PANEl SIU SCREEN INn PANEl SilK SCREEII

;::::.l.rj HOUSIr.G ASS~ F:.. .... ..,OJ5'·"J3 tls;::."r \PL}

15 D.sT~16UT1C'i P ... ·'El ':'SsY ;:)1i;T P':":iEL ASS'\' .f\..

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C-AD-s.e'lU91-~-:l

A-PL-~414491-,)-B

r-AO-53J24t)3-3-!l ~-l'1-5!n4~3-)-0

E-4IO-12121)'5-3-0

O-llA-716-3-0 A-PI-7IS-!!-'

IHJ'-~: ~-_-: A-~I-~: 1_,.-,::

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tONT~Ol 0-8S-T<:08-0-5 EkR:lRS 0-65-TC08-0-8 I IIARK TRACK [lEe __ C-ils-tCl'l-ii-J OTa la b-ilS-TC08-0-8 I PB 3-ilS- TC08-a-~ I a BIS I~ns I"J PVRS 0-85-TC'8-0-IO I 0 SUS DRIVE RECEIVE D-65-TC~8-0-11

I 0 8:J~ COl'o'lECIO'S o-aS-TC09-0- 12 "OOUIE UTIlIZAfl3\ liST JI;-vJ-Tca'-O-I3 ~:)CCLE UllltZATD,< LIST l-"l-TCIlI!-3 13 'IPE LIST Te'll! K-tl-TCH-O-14 ~7~~,~0LD~"~~:~:-:: ~.c~ 3 ~~ ~CC(o~ c 1

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PART NO ITEAt NO

I~~I NUMBEI! I Wf'1

t:[fIfIISH==-__ - +-/:::::,I=::::'---+SCAl~E:---:-r ----11 0 IU [I T C 08 - Qj - t5 ,.., r SHUT Of \ DoST I ~ I '1 I -I I I I I·.

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DATE 9-29-69

Te09 & Te08N CHECKOUT PROCEDURES

REVISIONS ~--~------------.----------r---~------~----T-------~--~ DESCRI~110N CHO NO ORIO DATE APPD BY DATE REV

A ~;~~ t AZ.UKA 3-11 7c ):;, '( +'-1"'''('

~~_~~~.-~~=-~_=~=~~=--=-~ ~:~i+_N_A_R_I_l_1 -I_i-2_-=_i4._7G-+--,r-"'?t:::..;:-~~

EQUIPMENT REQUIREMENTS

1. 2. 3. 4. 5. 6. 7. C. 9.

1'("09 Back Panel TeOS Inalcdtor System TeOB or TC08N Module Kit TeOS and TCOBN Logic prinls Set of TeOl Mailldec's '93 Pow~r supply or Equivalent 716 .ndicator Supply Min imum of 1 TUS5 or TU56 Transport Dual Trace Scope

B. PRELIMINARY CHECKS

1. With all other modulos removed, plug in tho G821 power regulator and connect the power OK indicator across pins B~lM2 Md 13/tlM2.

2. Inspect panel for discrepancies such as power bus shorts, broken modulo blocks, broken ~ires, bont or pushed in pins, and correct installation of the WRTM - normal sWltch.

3. By using a Mato-N-Lok connector, connoct power to tho rogulator and apply po .... er to the ompty panol and check power bus for corroct voltage.

4. Connoct tho 716 power ftupply to tho indicatoL sy"cem and install cables, Pa~ur up the empty logic panel and the indicdtor uystom. All indicators oxcopt thoSQ thut nra deliberately tied to ground Hhould ba ON.

C. PRELIIUNAIW CHECKD AND 'lETUP

1. Plug in all modules nne'! cabl(!B.

2. T~8t power clear for correct operation.

ENG D. tar.uka I APPD SIZE ICQDE NUMBER A I 61' 'reOA-O-lt>

OEC FORM NO ORA 101. SHEET _1_ OF ._,,_

eONilNUATION SHEET

TITLE TeOS & TCOAN CIIE:CI<OU'I' PHOCFoPlTRE

3, Key in th(, following instr1.lctionR

hQ9M.'.!.Q1'! .£9P~ tL'iEUMONIC

¢¢¢¢ 76~4 LAS '1'1'11 '1'11'1 A.{D ('1'117) ~'1'12 1!t1l '1'AD «(,76'1) ~{f0J 3¢¢5 DCA id¢¢4 1'112 TAD ('14¢¢) d~1d5 7"''12 /lUI' I¢¢f, 5'1¢'1 ,J "1 l' ~;'rAR'r'

'1¢~7 74'12 llL1' I/O SI<IP ~1r1,tJ ~'117 if¢ll h7(,¢ JI~12 ~'1f8~

'1'hill proqrl\rn wi 11 o)(nc-ut(' IO't' l n'ltructiol\s to dovic~ 76 or 77 lOPS 1, 2, or 4 W\dor ("ontrol of AC g" .. itch blts 8-11.

4, 'l'ho 10'r d:!collinq Ilh",ulll not bo t.of'ltod. 13y wllt("hing tho outI,uts of t.ho 101' decodor. with il scope and placing tho lOP in the ~1"J.tch register.

5. Place i!¢il4 1n the uwitch and set the XSA 0'1 to tho vnlu(! noted on the prints.

6. Key 1.n the following programl

r,t/U.·t ¢~~~ 7(44 lAS 1I1~~t 71114'1 CNA '1~'12 191'1"; DCA ~~111 291'14 lSZ ~¢'14 511~3 J~'P .-1 '1¢'15 29f1') IS? ~¢¢6 59f'13 J~:P .-3 111('17 l~ll ~'AD

rI¢lr1 67(,4 bTXA 0'>1"11 5¢91'¢ ,INP (STAR'l') ¢¢12 7.1¢2 lILT I/O SKIP 161613 '14'1¢ ¢¢14 ¢¢¢¢ '1¢)r; ¢t~~

T}'I,is proQr<1'1l Cll'lIH'-; tho (liroction bit to X ORad at. a rilte dotermitwd by tho tont(Onts t)r t.ho !1witch roqistt'r. 'l'hIS p.t'(,qr~Jn '1(ln<lt·r\t:I'~l (f M .'In<l I'd ,\() "trrw Lhe Ih~1 DY wllie-It shoultl now be spt to the v<11ue noted on the prl.nb •. NCTE THE UPPEf\ SWITCH ON REV 6 M'>07 SHOULD DE <;ET TO !'0StTION'l

D. Lazuka ISAIZE ICOOEI NUMBER 1 SF I 7'COfl-O-l() OEC 'OIlM NO ORA IOU SHEn __ ~ OF _' _

TITLE

CONTINUATION SHEET

Te08 & ~COSN CHECKOUT PROCEDUI~

7. By removing tho Ca8S in slot Ala and adding 11 tomporltry jumper betweon n14K2 dnd Dl4Ul, and also cnanging addl'lSS 13 of tho provious program to ALL ZERO's! I '1'ho progr"m n.ay bo useu to fire the 3P DY Which should now be set to the value noted on tho prints. After the SP DY is sot, remove the Jumper, insort tho G8RO back into slot A18, and replaco tll(.' origindl contents of addrosE' 13 (¢4~~) .NQiE THE \.OWER S WI rCli ('IN REV A M ~07 SI'OUI..D PI;, ~L T TO r()' I T",)N 4

O. By atlo11tl<J Lht? rollo~inq instructions to tlle previous program, a tapa rocking program cltn bl) produced. Rt.l'.rt program ilt location 16.

11'116 76¢'1 CLA ¢017 1023 'lAD 0''12'1 6766 D'1'LA ~¢21 5¢¢)4 .)!>lP ~,'l'AR'r

¢~22 7402 I!LT I/O SK1P ¢¢23 '12¢¢

9, By usinq the following program the write timing and mark track clock may be enabled:

fltart 66i~ 1¢)44 ,'AD ¢¢¢t 6766 DTLA ~'1¢2 6764 DTXA ~¢¢3 5'1'12 ,TMP .-1 ¢¢¢4 ¢26'1

Place unit 8 on-line and write enabled. Place WRTM normal switch in the WR'I'M position, Start the ptogrdnt, Tho clock should be ~et to the valve noted on the prlnts.

D. BASIC TES'l'INO

1. 'rho 'reOl basic exorcis"r (Maindoa-OS-D3nB-D\ providoR a. comprehonsive test procedure. Th~ tosts also follow' in a 10qiC'al ,wquonco of tt'lRtirq. If thill lJolluon..:o ill folh1wod, checkouL time and probloms will bo held to a minimum.

2. Aftor aU lost!! of tho bal!Llc o)(orciaor havo boon run corroctly. tho DECtl\po fOrl'It'lttar (DEC-08-!::UFl\-ol should be run.

3. DECtro)( 1 (Maindec-08-D3RA-D) should be rnIH11!1 to r\\n ol.ror [ro",

4. Tho DECtapu dbrary System (DEC-08-SUAI-LA) ehotlld now bo tried. And mado to run correc~ly.

PEC: 'ORM NO ORA .0 ....

TITLE 'reoo &. 'peOON cmx'! 00'1' !'HOCEDt1RF:

1511E ICODEI NUMBER

M I ';1' I 'peOH-O-H.

SHEET _J _ OF _1_

CONTINUATION SHEET

-----------------------------------~ E. ELEVA'rED 'l'EMPERATURE TESTI~G

1. The control mU9t run DECtrex 1 for ONE hour error free at 550

centigrade.

/0'. LIPE 'rES'lJ.NG

1. With aU of thn tranllpo'-ts boinq "'hipporl with tho BYStOI1l, Deelrox t should be run for a minimum of ot:r; hour por transport.

G. CLEANUP AND ADDITIO~AL TESTS

1. Chc-ckout of the oontrol i'! now oomplct(',

2. Moat DECtapo systems are shipped in a cabinet and the system must be run after ita installation in the cabinet bofore acceptance.

-----------------------------T~~~~---~---~~.-~_,~~ I SIZE IcoO£r NUMBt.R I RBF..V Davo Laztlka

DEC: FOIlM NO ORA IOU

-A SI' I 'l'COH-()-l(,

SHEET _,_1 _ OF __

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',lEI? BUt sn£2S (19,)) 25

1:-i00i0 BLK 26

"4K P'<E ~'''AL "1(1 FI'lAL HK I pee '"'I( t REV _oel< MKi ::;LlAqO 73 , 73 73 H

~r~~~~~~i~~-71~1~~~~~1~T~~~;,Jl;+I;~lrr~r~l-I~~~-~-l~Ti--l---~~Z~--J--.~-~---~-r~--------'-7-:

VI( REV I "CK "II<

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~ • .., __ r '"" ___________________________________________________ -'r--:L! ________________ _

XOP LPB ¢-.Z*~ __ ~_~_~ __ ~_~_L_~~~ __ ~ __ ~ _____ ~_~ __ ~ __ ~_~~ __ ~ __ ~ __ ~_~ __ ~ __ ~ __ ~ __ ~_~~~~--~--~---L--------~--~--~~--~~~~~-~~~-~~~~--~-_i

XOR LP B 3 -. ~. __ -1. _~ __ .l.-__ l..----...J~__' __ __'_ __ _L __ _'_ __ _'__..l_ __ .L_ __ .L_._L_~~~ __ ~ __ --'-__ ----L _ _'_ _ _L_ ___ _'___~_~'__ __ __1. __ .....L _ _'_ __ ........ __ _L_ __ -'--__ .J....-

WR EN Z------------_____________________________________________ ~-I

SH E1'4 ooooooonDOODODOOOOOOODODOOOOOOOOOOOCOOOOOuOO~OOOO~OOOO[lOQOOOODO~OOOOOOOOCOCJOOOOOOOOODOOO~OGr

COMPo we • I ! ! I I 1 I ! f ! I II! I I I I ! I I!! I ! I I ! I I I ! , I ! I I I I I , ! I

SHIF T BTS Ii",B ./ STA~ Qf w~fE-~H~rs CQNTR~~E~O~B~f-2f~R~e~l~~ ______ ~~~L-.l.-~~~~~I__1.1~1-L1-L1-L1~1~1~1~~I-L!~I~I-L-L_I~I~~I-J'~I__'_-kI~I-L-L_I~!~I-JI__,_I-iI-Lt-L-LI~I~I~1~1-i~-LI-LI""""~..l_ __________________ -4 ~ TO !::T= 1 TO 1:'" I -

LPB TO C~ ______________________________________________________________________________________________________________________________________ ~ __________________________________________ ~

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NOTE~ • SIGNAL DOES !\jOT EXIST AS SUCH BUT IS A ~AFHIC REPRESE,..TATt ON OF IT TIME AND fUNCTIQN.

7 6 5

IlESCIIIPTION

UNlESS OTHEftlSE SPECIFIED

3

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/15 V,..9C IYIR.ING

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ENGINEERING SPECIFICATION DATE 10/2/70

TITLE TC~8 Ascepta~ce Procedure

REV DESCRIPTION

ENG Larry ~;ar'll

o£c fORM NO ORA 107

REVISIONS

jcHG Ne: ORIG DATE APPD BY DATE

I SIZE ICODEI NUMBER~ A ~'( I \co~·,;;..~ ..... J REV

SHEET _1_ OF _2_

CONTINUATION SHEET

TITLE

~~: '1'0 defl.ne t' e proced~re to a~::e~)t a TC¢". DECtape Ccr,troller for "hl.p-::!:'t.

S lP-'

DEC fORM NO nlla tC!U!.

I} ?)

4} 5}

6)

A PDP-8 faJ"111y cc':-p'Jter One cr J"1ore TJSS or ~U56 ta~~ tra:,~ryo=t~ TC¢3 Lndl.~ator ~are~ 716 lndl~atcr s~~p:y

783 or eqLr,'aler:': sUPFly A 'IC!,] cr TC28-:' G0perdlns on t~e cC'1I'!ut~r C'utp_t bhS pola!:"~ 1::"

1) ':C$''1l Bas 1C E.:erclser 2) TC~l Rand,~ E~erciser

1) Make Slre all ECO's }aTE> :::~en lnstalJed 2) Perfor~ OC lPspectlJn 3) Make tre -a::,1.C J::yerCl~er cun on ea~h tran<::;:>ort 4) Run the R.~pdo~ E-::ercl!:"er for a '"tHn1.'TUm of one hour

:or eae! drlve that 15 to .De <;r.lppcd ""lth the system. o errors are ac~e7ta~le.

S} Run DECta~e :orr~~t~r prc~=a~ on ea~h drLve. 6} If the S_ su,,_' ha05 e> tra T" "'-0,:y. run tbe DECta:,e

E.-.ctended He~-01. y E-.:erc 1.5 er :'0::: 1/2 lour 1: er dr 1." r

tran:sport. 7} If t"e s!s"t;e~' b"ls ani other O-;.t3 LrsaL- d<?V1CCS. ru!'

the DI~11 E""_=::'l-{'r ~or 3 rr1nlmt·~ o· 1/2 hour. 8) Any standa:-1 DECtap .. 'y-te:P f'ofb'ar", ITlay 1:,e run 1.n

ac~eptance at tte c~~rators dlscretlcP.

1) All DECt.a;:>(> VA:';J)ECS 2) Co'npl ete ~ Pt: c" O::Ctar'" system soft\.;are 1.ncludl.ng

L10rary sistnrr ta~cs. 3) TC~8 Prlnt oet. of t;-.e latest ri>V1S10n.

SHEET -..:L- OF ...3..-


ENGINEERING SPECIFICATION DATE 10/1/70

TITLE TC08 Englneer1ng S "clflcatlon

REV REVISIONS

DESCRIPTION FHO NO ORIO DATE APPD BY DATE

1.1 Gcnl)ral Ol)l:lcript ion

A Computer Ppripheral 1.1.1 1.1.2 1.1. 1 1.1.4 1.1.S

Storcs Digital I.Mta on 3/4 In"11 Mdqlll'lic 'l'ilpO Storos Data 1n 1I 'J'hrco Track S<.·lla1!Parnll .... l l'ClrI1lllt

Data Cal' Be Accessed In Blo::ks Data Can Be Accessed 1n Both Dlrectlons

1.2 Operational Description of DEClape

1.2.1

1. 2.2

Tho 'l'ap~ Surface Recording ForM"t

1.2.1.1 1.2.1.2

1.2.2.1 1.2.2.2 1.2.2.3

DEClape !leads and Tllpe Tracks Tape R<cording Format

'1'hl' Cont rol r,,,ct ion 'I'hf' Dlltll 'l'rltn8fN nt'ctiotl The Formatter Section

1.3 TCOO Operator Controls and Indicators

1.4 Proqramming Exampl~8

1.5

1.4.1 A~ltoma tic S{'arch

Equipmpnt Dpscription

1.5.1 1.!>.2 1.5.3

Hardware EnvirOI®nntal Requirements Power Requlrements

ENO L. Narhi

SHUT ...!- OP ~.'.1..L

ENGINEERING SPECIFICATION mama CONTINUATION SHElT

T1TU: 'I'con Rp,,(,\ f H',\ t lOll

1.6 1$1)",ltlllt'111 Prom ('ltll ..,.'1

1.e. .1 Dt'lilj''' dnd Clock i.e..2 Solt lrl<J till.! Clc.,,'k 1.6.3 'I'he Unl t or Mot lon Delay

1.7 Summilry of Statlstlcs

I'~I I C.~e'l NUMBER I REV '\ (, 11

ENGINEERING SPECIFICATION CONTINUATION SHEET

TIT\, £ 'reo!! Spec i fiell t lon

1.1 G~neral DescrlPtlon

ote 'ORM NO "-1011 $11" lOll

The DECtapc system l.S a computer perlpheral WhlCh stores dlglta1 data on 3/4 lnch magnetlC tap<> ln a thrc<' track parallel/serial format, with which the data can be accessed in blocks WhlCh are read or Wrl.tten HI both dlrcctlOntl.

1.1.1 A Computer Pcnpheral

DECtapo iR " pl'riphcrlll for lhe "Oil rilmily of COllipute"UI. E<I.:11 DECtapc sYl!lom consists of a controller and from one to ,)iqht ti\pf' orivt'R. '1'1 It' ('onlloll('r cor noets to the compuler's 1/0 bt's and communlcatl's to th(- pro('CI!~Jor for ('ontrol lind status inforrrationl and directly to memory for data lnformatlon. Each drlve connects to the controller tl,rouq!1 a para 11(> 1 bus through WhlCh both control nod data 1nformatton pass.

There are two controller models an,1 two mod~ls of t<\PC driVes. Table 1-1 lists thl..",e modpls. and the computer systems on Which th~y are used. Note tha t lhe TCOH a')Q 'I'COB-N are ft\n(' t l Cln~ ll~' j",h'n\lcnl. J\IIY ail)l\\.riCo1l1l ul!fercllces will be indicated in the text.

Tahle 1-1 DECta!?c i~od(\l Numbers

~ntr~ Tnpe Drive Cornput er Syst<>rn M.0.r!.~_ -f1.9.2<''''1. ___ -+-___________ -i

TevS TU55. TU% PPPR/t., PDP-tVE

I TCOA-N '1'U'l5, 'I'U% PlJPfl/l. PIW-B

NUMOU4

SHUT

"~V


------------,-------------------------Tnl~ Teos Speciflcation

1.1. ,

1.1.3

1.1.4

o~c 'ORM NO 11-1021 !)IIA 1011

S1 (l' t", Oiq 1 t 111 oal,l on lit! Inch V,ltJI1' tit' '1\ P'

1:<1"1\ trail' port contains motor", tap<' l1"a<1$, and the lO'l\(" n<'cec;',ary for ,('1 <:',"l lOn,

1l10l10n ('('ntrol and d,la tri.l!1',fcl. tach drive c~n bindle 260 foot r~cls of 3/4 inc~ 1 mIl maqnctic tape. BltS nrc recorded at a dc'nslty of 150 ±. '>5 blts pcr trdcK lnch. Tlw t,It)." n1nv('1'1 itt it 'l1'''(d nf ')1 .. 12 ill"ll('" pC'r 'Iceonti, .lnd can store \I:, to 190,O()O 1 "-h I t ..... ord·,. 'J'hc 11J55 ras 011(' dr 1 V", ana lh(' TUS6 has two drives.

Storl'~ D~la Tn A Thrp(, Trnpk Rcrlal/Parall('l I·Otllh.ll

'l'ht.' uala ill lho btCtap,· SYFlt.('1I1 i.., SLOf('d in <I pit'lIll!."l formAt, Tn t h"t r'4f'h 1 ;~hit rht 1\ \,,(,pi iI3 divid('d into 4 3-bit bytes, and slored 1n paral1rl arrnS<J threA alltit trAr~~. ~~A ayal'm 13\('1 cr til" "l)lI1tJlr>l" J '-bl.t W()lu,''''>rially albll<J

thr tapo 1n four of th<'9D hyt"s.

In!c·tal'" "tITt."" It, d.\tn worth Jll block'l or Qrnt'1'''. f:It"h hl()('k '-All hr, rltl1ih'!f11V nnt"'''tj''r! ill lIFtl i1 1'1 idr'l1tlfi"u by a hlock numb"t or I!Iddr(><J<J, and th<' cont"roll<'t" uJl(l<.>r t hC' dlr<,,'t Ion \If (I", ",'\1I\J'It- I "all 'l"lf" t at lall(h'l\\ a\ly bloc;k, to wr t"C or read a qroup of ... ,on"'.

"UMDER 'ttv,. -" 'i J

SHEET ~ O~ ~

ENGINEERING SPECIFICATION BRum CONTINUATION SHUT

TITLC Teon 8p~clrldatlun

1.1.5

'l't\\;I It!II' t h, 01 nllmb •• }' (It \wnt,. In t'f\~'11 ,'luck i [I JJru-dt>t eYI1l hH,t1 WhN\ t h,' t Clpo it at! lI' ia furmdllpd. Porl1l3lting involvrs writing a timing track and a mark track on two (non-data) tracks of the trpc'. and numbering the data blockq. During formatting, thp programmer can select tho length of thl' hlocks. Once sot. thp len'Jth cannot b<, changed without dcatroying data on tlw tnpc.

Data Can Bo ACCOfisod tn Both Olr('('t iOlla

Each block can be idontifit)d hy the computer no mntter which way the tapt-· ia moving. Furthor, datil can b(' road llr wr itten in either dirQction. Thi~ fCAturo ftl1nw~ tho t>r<:>gratnltler relati.vely fdst scarch time since the tape docs not havn to br '"o-wounr1 bt·fore a block can be searched out. and the programm~r can beg1n to wrlte no matter Whl~h end of the blOCK appears first. It 18 important, however, that the programmer read and wrlte the same data in th~ '1amo d 11"(" t Lon, or else be prepared to unscramble it in the computer.

1.2 Operational Dcq("ri}lt~ot. of DECtapo

Information flow ~'i thin the DECtape sY'ltem is dotE-rmined by the rocorc.li.ng forl\lilt on the tape surface, and the internal architecture of the controller.

DEC fOAM th.' "-10" ORA '08

SHEET --.5.- OF .§..£!..

ENGiNEERING SPECIFICATION II!DOma CONTINUATION SHEET

I-T_IT_L_E ___ 'l~Ofl SPt'C I f ic,1 t ion

1.2.1 The Tape Surface Rccordlng rormat

'!'Wo lntportant DECtape fealures - lnd1vidually addressable blocks and bldircctlonal readlng and wrltlng, are the re<;;ult of the tape surface format. ThlS stores not only data, xut also InstrucLlons telling DECtnp0 what to do WIth the data,

Roth t~0 data and th~ in~tru("tlons

arc stor('d ln, or r('ad fron', lll(,

magr.et ic tap') through r"dcl!wr Lte h('adl! WhlCh maqnl'tao th'" lape in one of two dlrectlons to represent a "0" or a "1", and read the same lnformatlon back. There are te,. read/wr1te heads dlstrlbuted along the wldth of the tape, each head cover1ng a narrow path called a tape track 01 channel. Flqurc- 1-1 shows a tap~ stretched over the ten heads to indlcate how the wldth is divid0d inlo ten tracks.

Tho ten ttacks and h~ads are divl~ed funct ionall~' into five plurA. 'I'he two outside tracks arc:> call<,d timing tr~cks. On the.e tracks slgnals arc pre-recorded at a fb.ed frC(luency, and used to strobe lnformatlon inlo or from the other tracks. The tapE! controller synchron1zes on these pulses.

~--------------------------------------~~~~~r-----~~~~---r~~ IS'lE IC~"D, EI NUMBER I REV

OEC FOAM NO 1.-"", ORA t08

A I '\c c/o; 0 j',

SHEET .-L OF ..:f!'~_

ENGINEERING SPECIFICATION CONTINUATION SHUT

flTU:

DEC FORM NO '/1-'0" DRA t08

'['1\01' twu ltn~kn 1,('xl tu Ltw UtnllllJ t['(V'k!t are called mark tracks. 'rhese record the instructlons WhlCh tell the TC08 controller where the tare is and what type of data iq ~tored in the associated information trnckR. Thr information or da~a tracks are placed in tho middle Of the tapo, wh,'re the effeC't of IIkt)w in at a mlnil1lum. AlJ arc the liming and mark tracks l the data lrn~kR aro paired up.

Th~ h1qh reliability of tha rerordingl reading syslem is because of lhe way in WhH'h thQ 10 tr1\('lul ilf\:l (hvtd]t\ tillu five pairs of counlerp~rts. rhat is, corr(,8~ol\din9 hN\ds tor each track are wired 1n serie., and r~cord and wr1te the same lnformatlon. Durlng reddlng, the analog gum of the two heads 1S used to detect th~ correct value of the blt. Therefore, a bLt cannot La mLsread until the noi3P on the tape 18 Bufficlcnt to chanac tlH' poLlrity of thl' ',um of the slgnal~ belng read. During wrltlnq, corrcspording heads record the Bame inform" II on.

in summary, the five pairs of tracks conSl.t cf - t~c timinq tracks used to slrobe the oth<'r track'3, the mark tracks which store instructions, and three data tracks. An 12 l.>lt 1>01>-8 word, then, used 4 lines of 3 data bils cacho

NUMBER I REV ,c.c. lr 0..1 i ')

SkEET --Z- OF ..2£_


TITLE

DEC 'OR~ NO 111-1021 ORA 10a

1.2.1.2 Tape Recorelng Format

A reol of tapp muqt bc pre-formatted bofore It can be used on the DECtDpc "Iystcm. Thl S lnvolveB logIcally dlvldlng the 260 foot length lnlo thr('t' ~oncn - two I'lld zonCH and n record ing zone. Thp ('nd z<Jn('" art' about 11 f('ct long and arc ust"d to wlnd tape ilround thp hcnd<; and ito the take-up reel. 1~~y ncv('r continn any d,Ha. The recordlng zone contains the data.

The recordlng zone lS dlv1ded lnto blocks. Each block w1l1 store a spcclflC number od data words and s('vcral control word~, lncludlng l.t'l own llddre3<; 01 block numh0r. Thl' !lumber of words quch a data block wlll "tOrt::' lS d('lernl1ned when thC' tape is formattod. NorMally, one r'l'l 1S formented wlth 1474 hloch;. each with 12<) 12-h1 t word~i. llOWt'VCl, th.;: tot"l l('nqth of the tape lS cquival<'nt Lo 884, 7JL 11no. winch c .. 111 L.;: d 1 V 1dc d lit Lo any number of blocks up to 4,09b. CorlpJ .;:tp lnstructlons on how to formo.lt a tape arc ava1lablc lTl th<:! DECtape Formatter. (The numl:er of blocks 1S Ilm1ted by thlS formatter).

NUMBER \""'\. -;.,) ~

SHEET -L OF 50

ENGrN~ERING SPECIFICATION TITLE TCOS Speoification

..... ......

NOO'E TfLl'" EACH PAIR OF HEADS I~ ACTUALLY WIRED IN SERIES, AND 'tWO WIRES ARE Rutl TO A OIFFERENTIAL AMPLIFIER, FOR ~IMPLICITY A SINGLE WIRE FOR EACII PAIR tS SHCMN IIERE.

..... ......

CONTINUATION SHEET

Figure 1-1 OECtape Heads and Tape Tracks

Dte '0"" NO '.~II'» ORA tOI

ENGINEERING SPECIFICATION TITLE 'I'COS SpC'clficatLOn

OEC FOPM NO "-'011 DRA 108

" (/ "l. Ii( ... 1 ~

~ 't. (~

1.I V

~ \-

~ It ~

\I

" 't '0/ l-

'" ~ (, ;:

+J til e \.4 0 ra. tl'I c: .... '0 \.4 0 U

~

~ I!) +J

~ N I .... <II \.j ;:l tl'I ... A.

NUMBER REV \1 c," ~..., J ",

SHEET --5L OF '::..,0

CONTINUATION SHEET

II)

III Q}

,lI ~

gC; .-I \.4 Ill+>

c: III 0 +J U

~'O c: I\l III

'0 III c: +J

ttl 2! II) <II Q} a+J o I\l Il:I ~

+J \II en Q/ =' ~.-I ,t::.-I ~H

\II 0 ~+J

'0 t!'Q} c:'O .. c: ~ It tA~

NUMBER ic;Cy, -'" -,;r!.

REV

SHEEr _L2- OF ..§L


TITLE 'J'COtl Src'clflciltlon

DEC 'OR" NO ,,-,o~~ DR" loa

Each data block on the tape has the followlng charactenstlcs: (fl-g. 1-2)

1. It lS numbered and ltS number l-S conta1ned 1n the data tracks of the block n~ber area at e1ther end of the block. ThlS 15 to say that the computer can ldcnbfy a block from its number Ly approaching thE' block from C'lthcr dlr('ction. The block can then he read or wriltC'n lnto, 1n e1ther dlrectlon.

2. A 1ong1tud1na! :'arlty checksum 15

automat~ca11y calculated by the controller and deposlted lnto the par1ty check area of the block. There 1S a par1t} ctlcck at clther end of the block so t1lat the checksum can then be depos1ted no matter 1n WhlCh d1rect1on data has bce~ read or w1rtten. When tl'c data 1S

read back, thlS checksum is r('calculah'd and compared w1th the origlnal. 1\ny dlllcn.·p.lncy 1'3 rpjlol't('d to the computet.

3. Hpaccb are e'l tabll'3hC'd to de llnea te' block." and Within each block, hetween the block nUl1lber and the data area, so aq to glve the computer time to react to the nwr.J'er (1. e. set up the data parameters). 1hc controller

!lUMBER iC;,,\< v)")

SHEET ...l.L- OF 50


TITLE 'JCOll SIJC,'I fH'dt )(\],

1.2.2

DEC fORM NO "-'02~ ORA 108

l<1011tlfi(''1 til' ,llff.}].'nt arc<HJ I.t a blp('k, olE 1 ....... 11 a" til" lllf!0 r "nt '('11"'1

on the tar"', fl (,m "pC'('lal ('('11<-", 1'1 <'

r('('ord0d on tll(> m,ll')., tracy. "'h0'1<' ('['(1(><' ,II (' not ""<'11 by lh,· l'<.)!l1pllt r 'r, and .11'l' 01 flO intt'l"e<,t to t fit' TJto<]ramm. r f'Xf"'pt tor th,' functlun that t1l('l pprform. A mOl" d('t~ilftd brc')ydown of the m,)r~ lrnlk i~

glven 1n Chapter 2.

Tpe organi.!atlon of the hard\'arc 1n the controller lS stud1ed Ln three parts - the control, the data transfer section, and the formattt'r. Thcsc arc ~ho"m 1n ilqUr('s 1-3, 1-4, and 1-5.

'I'll(' Control S"etion

l'h(' l'ontrol "(>('1 ion 1'. thtlt 10gH' which r (\111'''1 \1nd("r thf' !,UperVl'llt,n of the pn"qram thro1lqh 1<"1' \n·,tnwtll>n. {'lelbl(' 1-:> d,H,(TibNl th,.' 1(\' ... U\' truction<"1 [t consi:,;ts of 7 rcgist('l~ ,In" th(nr <lqs()~'ial('d loglt'. {',abl,' 1-3 SUmmilrli't", the d0codlllq for (ach regt,tcr.) DQqcriptlon~ of the reglslers arc aD follow<; ,

1. The t'n1t S('lC'ct Regl<;tC'r. A 1-bit r"gI9t~r ,~jrh j"'"dq l blnary tc D~tal d(>cmlt'r, which In turn drlV(''1 t':qhl select Itnes to the contlo! cable. tach tran<,l'ort ('"n bf' din 1 .. d 111t<' a

NUMBER it •. ~ -~ ..

SHEET _,_.1._ OF ...:2!L


TITL! ':'coe Specification

pftrticular selC'C'tion address by mNUI'1 of 1 Dwitch on tho front of tll(' tram,port. r[ the numb<'r decoded fro:>1 the tTnlt Select Regi1ter corresponds to the number s<'lected on the sWlt('h ttl':!n thdt transport wlll ac('C'pt mot lon <-ommand'; from the control1(>r. If mo .. 'C' than one transport is on the same numbpr, then an t'rror flag is posted as soon a', an attempt is made to lnltiatt' operatlon.

2. The Motion Register. A 2-bit double buffered r~glster that commands the selected transport to stop, qo and move forward or go anu move in reverse. Note that ea~h transport remembers its motion, and if it lS subsequC'ntly unselected without being stopped, it will continue until it is re-selC'ctC'd and qtopped, or until it runs out of tape.

3. The Mode RC'Jlster. 'fhis splccts clth~r continuous or normal modo [or each ,peration of th!' function register. The difference in respons~ for each function to the tvlO modE'S is (>xplaincd in Table 1-4.

4. The' F'tlnctlon Register. 'rhis ill

1-bits long, and is dccodo1 by a binary to octal converter to 'lclf'ct ono of a p030iblc scv{'n funct ions. An <'xplanation of these 1ut)ctlons is <"lvcn in Tablo 1-4.

NUMBER "-''' • I.) ...

SHEET ...!..l. Of ~


TITLE

Ole: '0"" MO ,,-10" 0"'" 108

S. Enable the Interrupt. A I-blt regLster whlch. when sot, allows the controller to use its PI lntcrrupl sy'Jtcm. Whpn rC!let, it disconnects DECtnpe' from t he interrupt 1 1 ill'S •

1n thc' dl',cOnnf'cl "t"le non.· 01 Ihe ;'rror ('ondltioll' or D1:Cl<.l}>P t ] ,hI Cdn cau'3C an l')~('rru\')t. In no (It',pr way, how("ver, 1'> stalub l' ,lfi("ctco.

6. '}'h(> ERROR Flag" arc fllp flops whie\> continually examine !,os51.ble error condltlons durlng the operation of the transport. Each condltlon l.'3 e·<plal.ncd 1.n Table 1-5.

7. Th~ DEClape f149 l'> also a single flip flop whlch sets, elther when an oporation ha. hppn Buccrnqfully completed, or whl"n it ha"l been aborted us the rC"Iult of an error.

The unit Select, Motion, Mod<'l, FUl1ction and Enable registers arc all set from the accumulator by the XOR status A lOT. The blts of Flgure l-S lrdlcat~ the accumulator bit which nrtn each fl1p flop. 'I'he two blts not c;hown. blt 10 and 11, clear the error fla~"1 and th~ DECtape fJa'J rt.>Bl,ectively, lf tlwy are set to a Z0ro in the AC dU-Ulq an XOR instructlon. Till" completC' wl'rd trom 1 to 11 L'1 known a~1 Status A.

N\,jt,1&£R "' ;G;r v·"' ....

SHEET ..iJ:L OF .:§!L


TITLE "COB Sp<'clfic..ttlOI1

DEC fORM NO "-lfJ" ORA 108

All of these bits 0 to q can be read back lnto the comouter u'1der the instruction Rl'ad Status A. (DTAA).

The error flags can also be read l.nto Hie accumulator lnto AC blts wInch correspond to the bl.ts shown ln Flgure 1-3. F\lrther, the DECtape fJag is read lnto ac~umulator blt 11. Blt', 0-6 and blt 11 are known c<.)ll('ctlvel~· as Status ll. 'II e JOT lns truct lon WhlCh reads them i.:; ca'lled DTRB.

In Summary, the S~atus A reqlsters are set under JOT conunand. They dC'termine the operation to i.>(' p'~r1orm~'d, the tr'ln',port Whlch 1., to perform that operatlon. the dir<::ctlon of mot lon, and thC' mode. Anv errorg are communicated to the computer through the lnterrupt lOqlC, Sf an opcratlon l~ successful. then that too 15 communlcated back to tho cOmptllcr, winch then -tukes ~- . further action. 'fhe dctual lnforJ.ldtlOI1 transfer. are tak<'n Cdro of throug~ th" multl. cycle data brp8l- l<lcllLty und0r the dlrpctlon of lh<' data trdnq!cr logle.

NUMBER '\(.'.~ v-).:.

SHEET --1.5..- OF SO


r--- -------- ,

l~nE'llt()nlC' Octal Cod.. Oc,>cript:.on ,

0'1:;-- -----;,;;:2--- ·-;l"ar~:-~-;:-:;h:-;f.Ctap" ': ('0ntrol an(l "rr('lr fl "'J; III \' UO.J \ t 1\1 1"'11 (0. r' and I J ). ______ " ______ !

t D'l I RA (17GJ HI",-Hl !'1tat.t's rcgistC'r A. . h(l C'ontcont .. i I of '1tat us r",}1.8+;'0)." A 1', ('Red into the I

I M'AA

D'1'IA

O'l'W

D'l'RJ\

I D1'D1'

DEC FORM ,.0 "-'02' ORA 108

6764

S774

accumulator.

XOR <;tat\,'" rp<)1<;t 0 r A. Th<' 0x<?lu' lVe 1

C'R of the conte:tt of bits 0 through 9 I

of the accumulator and status A 15 loaded I l.nto status rC'gl.ster A, and b1ts 10 and 1 11 of the aCCl'ITlUlatol' arC' samlllC'u to : control clcarlng of the error and DECtalle; flaqg, rl''lp<'ct 1 VC' ly. '1 h" WC over flO' . .., f1 a(l i.s clc/lI:C'tl. :

Load 'ltahl', rC'gi,t,'r A. C'< mbin(''1 at tiod of Ol'CA ",wI 0':'X1\ to load ACO ,<) lnto ·,lJ.tu< r"qlstC'I' 1\. l'lt.'j 10 and 11 cop~rol clearlng of prror and DECtape flag", re'~l)('ctlVC'ly.

The 3 m~mory fleld hlts arc loaded from AC 'llts (,-fl. 'Ill(' AC i' clral cd <lll<.l thC' ("rror flag'} arC' J eft undlntnrh£'d.

R"ad Statu,>~. Thp AC l~ ('10arcd and t!'f' contr·nt of "tatus l! JS ()Red into th,· 3ccumnl:ltor.

S~ ip on DECtnl't' flaq. ':'h,' '1ta\-<' o{ t h(' 01':(' tape f lac] (DTI') 1'l '111m,,1,'d. If it lS set to " 1, th,; content of the PC ~'l 1n('rf'rJ"ntea by one to 'lkip the nf'xt 'lC'quC'nt1al In'1t.ructlon.

.1

I SI]E ICODE ... ' _____ NU..;.,M_B.;;E .. R__._JIoo.R_E_V.J A I ... "c:.~, ...; ,,)

SHEEf ...JJz.. OF ..5i.J

ENGINEERING SPECIFICATION IIIIIIII CONTINUATION SHEET

TITLE Te08 Speclficatlon

TABLE 1-1 Slatus A-blt Asslgnm~nts

-. _ ... ------~~~ ---- - .. ----""----------_ ..... ------Reg1.ster AC Register Octal Dccodlng

Blt Bit Code --unit Select O-.t 0-2 Unit

(USH) 000 0 0'1: B 001 1 010 2 011 3 '\.00 4 101 5 110 6 111 ' 7

Mot ton 3 ~ 0 '" Forward (FWD)

(MR) 1 .. Reverse (REV)

4 1 o '" Stop motion (STOP)

1 c Start motion (GO)

Mode 5 ~ " = Normal Nod(' (I,/-I) 1 ., cont inou'\ mod,> (croll

Functior 6,7,8 0,1,2 Operation (FR)

EnabLe the Interrupt (ENt) Enor flag (I!;~')

DECtapo flag (OTP)

DEC 'Ottlll NO " ,m OttA '01

000 001 010 011 100 101 110 111

9 ~ 1 '"

l~ o '" 1 ..

11 o '" 1 ...

Move Search Read Data Read all Write data Wntc all Wr1te tlming Unusc-d (cau'3e'J 'ilelect error)

Enablf' DECtape control flag (lYl'CF) to thp progl'"ilm ir.t0rrnpt. C~r all ('rror fll.\'1!:1 Error flag'! undhturbcd \ Cloal" DEClape f laC] DECtap~ flaq undisturbed

..

I SaE I Cr?(~E I NUMBER I REV \(..- , '"' ) ~.

SHEET ..J.L. OF StJ


TITLE 'reor Spec1ilcatLOn

TC\ble 1 4 The> DECtape ! \\;1ctlfm"

r------------------~----~ -------------------

MOVE 'fhC' movC' [unetlon lS used to re-ulnd tape. Code 000 of blts 6, 7, anJ 8 inltlatc~

t1lP'" motion in tll<' 9,'lN'lN: di r<'ctio,l, provid0d ';0 ;lS aha on. 'l'he makr tr, ck. 15 re>ad, but only thp C'nd of tape 1mtruction 1S decodod. ,ncl of tap0 posts an error flag and cau'>es an lnterrupt to th .... computer. If thl' tape control 18 uns. locted but not qtnpppd, It cont1nues to r~n; huwC'ver, the end of tap!' is nnt dete·ctod. 'The state> of mode 15 lrr01evant.

1--------·-------------------------------------------------SFARCH ';'hC' search f\lnctlon is used to search tor

blocks. Wh~n a block number i'l dc-tocted by the mark track, thf' three-cycle data break control transfers the number lnto thl' addr~ss sp<"ctfu:'d by the curr<'nt addrc'l'> r~gi"t('r. 'rhe current address reg1stc::: lS not 1nf'remf>nt0d 6('\ that IlUCC'C'''S lVC> blo<:'k numbors a1waY'l go to tho 'Him!' addr('<J!I. 'l'h€' wt'rd count l""gl'ltt'r is In('r~mC'ntod, !tOW('VCl", ll'l C'ach blo(,K numbl'r is pa'1scd. It th(' modC' is !,let to normal, the DECtape fla~ iq s~t each time a bltck numb~r 18 dt'tC'C'tr>d. Thib causes an 1.1lterrU}lt an.l the program cap idontlfy the block numb('r. In continuous modo, no !ntl'rrllpt ocC'urq llntil tIt' word count reglstor ovorflo#s.

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

DEC ~lllll NO ,,-,on ORA 101

NUMBER I REV ,c.~;;''''".l.~

SHt.ET ..LL OF ~


TITLE 'l'COS Spec i ficat lOn

'1\lb10 1 - 4

l'UdCTlON OPERA'}' [ON

--------------------- -------------_.-SEARCH (Ce,nt i nu,'d)

READ DATA

This Hoarch Dp~rllllon is most officient When both mod~8 lit'(' used in tilt' following way: I 1. '1'h(' currc-nt block number is dot~ctcd in !

normal mode. 2. '1'he difference botween it and the d('8ircd

blo<:'k nurnb0r is c()mpt:t<'r, and. the dirt'ction c0rrcctod, if n('cessary.

3. If the diro~tion is reversed, read the current block again and compute the new' ulfference, otl'crwise go to 4.

4. The twO''3 complum('nt of the dlfforonce 1.5 loaded 1.:1to the \"ord coun~!lt~r.

5. Th0 function l.~q~O cont1nuous mode. -

6. On the' noxl interrupt, the tr.lnsport 1:OVl'r tho dOt>ircd block. 'rhe block numb('r h in th(' <lUdr0~S '3p<'cl fil.'u hy tht' currt'nt ndch" C'!3 'j regi'ltC'r.

READ DATA is used to transf~r blocks of datu into core memory. '1'he standard block l~ngth is 129 12-bit wordn. Por th1~ and all following [unctions, th~ CA location initlally mUlCt bt' Jet to (the transfcr memory 1ocatl')11 - 1) B~cause the c.1\ loc11tlon l~ lnCrl.'mentcU Just before each word transfer. the we l('catlon is also :Lncrcl\\cntcd prlor to ea<:'h word transfLt", so must b(' act to the 28 cOlnl'll'm('nt of thl' numb('r of worda to b<'

L ( -------~--.------------j

DEC fOttlll NO "-'Oll ORA loe

•

SHEET ..J.!J... OF SO

ENGINEERING SPECIFICATION CCNTINU<\TION SHEET

TITLE

'lahl(> 1-4

~'_L-,j-_,C-~_'-I'~l_O-N-_'------------------------------O--PL-'I-~-~'-rI-o-:-~---------------1 - ---------------.--------------------------------~.

READ DATA (cont)nuca tran'lferrE:'d prlor to the tran'Jfc-r. Data may

be' trunsi('rrcd tn forward or rcver,><,. Any number of word~, e'1ual to "r less than a block may be transferred 1n NM. The D1F 1S r~ised and an 1nterrupt occurs at the end of each block. 'l'he D'fF must be cleared before tht beginnlng of the n0v t block (l.e. 17 m~ec.) to avold an etroneou,> tlm1n'J error. When part1al blocks are tran~ferred data transmlSS10n w111 end w1th WC overflow (l.e. the word ,,,hlCh r aus<'s the .... e overflow),,> the last one transferred.) However, tho rema1nder of tht' block 13 read and parity chcckl'd bE:'fore the DTt and 1nterrupt occur. Tape motlon contll)tw'> until Lhe (,0 I'lL 1, r .... ::;(.t to 0 by the l'roqram. 1 f the GO L1 t 15 not re'lct to a 0 or a n0W function 9D~elfl.C'd be foro Lhe end of th" n(''«~ block, a llmlng error will occur. READ DATA In ·:~t 1', lntendE'd prlrnarll\ tor )-i.llql.', 12')-word l>loc~ tri'll)',("r',. f ,IIW otll('r lIumLE'r of worrh 1 to b(' tran·,fprr.~d, It i, d<lvdn~'lgcoLlu to Il'lC C,'!. !!"W(~VCI., u: t I.e pro'lramme'r c/1oo 10'1 lo t1 C ~'~1 for any oth .... r nun~)l'r of word~. thl' progr,m mU<Jt chrck. for \ C overf low at each 1 n>._·rrupt b€'cause there ),' no olher way to dr>termlnc when to sLr'r ~h(' • <.Ipe or chan'le Lo anotlt('r functl0n.

L--.--------.---

DEC FORM NO ItS-1022 ORA 108

NUMBER REII ~c..(...~ .., "j "')

SHEET ..6L OF ..§!L


'ITLl TC08 Specification

')'ablp 4

r------------------------------, FUNCTION 1----_._-.-._----------'----_._---.,-- .- .. -- , RFAI> M'l'A (continued)

RPAD ALL

Wl1l1t\ lilt' we ()vIHflow OC<'I!t"i;J, il: 1<1 ('E;iI'lrlllial that the function b(. chanq,lcl or th<- Gn bit n(·t to o. Oth<:'rwisa lronsi0r begins again (tilt' IO'f to C'lt11n.' thn D'IT ilOl'licitly 'llH,dt'i<'1l th,' Ramo !' .. nction aqain) at tht' next block (o"t" noxt word [01' tIlt' ALL funcUontJ) t:linc() wc .. oonOB is valid. Any numbtw of wtlnl!-l may bo tran') fprr~d in eM. 'lo\,'''vC'r, lhe 1>',1' (Inc) 1111 intt'l"f\lpt. o('cur only {'TIl',' <lttcr' a we {lvotflow and an ond of block. 'l'h" C'ommcntR c!onc('tning tupt' continuation apply in CM .9 w('11 a'! :--IN.

'rho RFAI> ALL function allow,; information to be r('o<1 i:rom 'l»u8un11y fot1l1<'1ttp/l tnJl.1I t>MP/lUill1y l'NltHnlj ,Ill data ltal'lt ... rpc()t<ktl on DbCt'\\l<' 'r<'qat'ule ,Ii of til(' matk tra<"K vtllu ... , During the R!AD ALL funcl iOI1 til<> DI'Cl"I'0 control dONi not di'lt mquinll blllw"Nl (liff"l'I'n\ marks tl'c(1rdC'tl I)n th(' 111111')<; tl."lll!k ~ 1'>C<:<'Pt. tu ('heck for m'll k t.rack ('11 ort! (~ll''l'K).

In hOlma! IIlJdc (NM) the Drr'}' is raised and CaUses on interrupt ot: tho end of roach 1i-hit word tran~ft)r. Dtlta transfer qtops t1ft/'r we ov<'rflow, but t~lw m(lti('n contillUC'fl until to GO bi t h1 S('It to 0 or a new function is speC'ified (in both l~ and eM). If the DTr is not cleared aftC'r each word trans fer, a timing error occurs at the end of the n~xt word (1.0. 33 ml('rOflI'Cond"l latt.'r). i .. , ____________________ , __ '. ____ ,_~ ___ ...... ......._.. ______ l

DlC '0"" NO ,,-,m D"A 10'

NUMBER I REV 'tC.C? "'0 J ',I

SHEET ...:ll. OF 5?J

ENGINEERING SPECIFICATION CONTINUATI,)N SHEET

TITLE 'I eml bl"'ci r lea t lon

'l'al,le 1-4

r--------------------'-------------,.---- -Funct ion

----.--.----.------------------.. ------l RFAD ALL (Contin.Je>d)

I:'or contimlou<' n'ode, the DTI~ 18 rai'lcd and c~uscs an interrupt at we ovrrtlow orly. r1' this intt'rn'pt is iqnot('d no 100rt" data t. :lnllff'rlll ()CCur hu\ tnp" mollon continue') .0 EOT.

t-----------------.-----.- ... --------. WRI'L'S DATA Tho wr Lt'l cnab Ie owi tell on tho TU C

} S or 'ru'i6 muat bo In write enable posillon for all WRITE functions. All the details of thc RFAD DATA function dpsc~iption apply wLLh the following ('xceplionfl.

In normal moo!', the DTF is set to a ] at the end of each block. Jf we overflow did not occur in the block Just ~nd('d and a npw function is I'lpt'cifi(>d, the nexL block wU 1 be proct'B:H'd providt:'d tht' lYr!<' l,CHJ hl't:'n clt'ilr('d.

1 t we oVt'ri low did oC'ct.r in t h" bloC'k ]Ullt

("ndNl nnd no n!'w rUnt'tion ill IIpN:'HI.(>cl, t ht:' tap ... COl\ti I\UI"I1 to mov<' h\\t lho wri t 01:'3 I\\.}

dtBnblvd, and an error will occur. 1~(' r!)m.lindllr ot th(' hlock is wriltl'l1 with Z(I&:'OOIl,

In both CM i!lno NM wlv'n paL-Hal l'lock'l are writlen, data tronsfer from core to DEC tape stops at we ov~rflow. All zeroes ar~ written in t~e rematntng data words of the block and the parity check character is computed over the- entu'e block and recorded.

SHEET ~_ OF .§1L

ENGINEERING SPECIFICATION CONTINUATION SHU"

TITLE 'feOR Sp{'C'ifiC'ation

r-------------------------------,------------~

4

---------------------------------------(lPJ:RA'j'[()N ..---- ...... --... ... -~-----...... ---------- - .... ~-~----.,...,..~.....", ....... ~.

WR 1'1 E OA'lA (cont In'lt'd)

In ('ontinuous mod.', thco 0'1'1' i<l I!H.!t. at til" ('nu t'f the block in which WC ov('rflow occll\"fNl 'l'ht'·cfor(, if tiD n''' .... functiun is 'lpcdiic,d: thco tllpo continun" to movl' but. thft writf'ro ala dinnbled, and an ('rrot will ocC'ur.

i------.---~---------.--.~--~ __ ~_-~ _" _"'_ WRT'l'E ALL All tho d .. toils oi: tho RF.AD ALL function

d('acrir,tion apply. 'rh(' WR TTE ALL function ift UIH'd to wr ito an unUtl\!,J 1 f(JI-mat (Huch a~, block numb<'rs on DECtapc after tlming and m.11'k trll/:ku hllVtl lH'N! rN"ol:'dNl). n1t'> word which cause. we to ov<,rflow i'l the last on(' wrttton in NM ('r eM, 'i'lli' t nIl\! "('lItlnut'<! to nlovc but th(' writpts at'e di~llblt'J.

No'rSI Chan,](' of fUllction mll'lt b .. ctdoyod for 1)0 n\iCl't'!H1CtlhU!\ to in \n r> r( conHnq (Jt

lallt word. A1t(lrnot iVt methodl ,,('t we to ono gleatcr than dcsirt'd nUlI'bcr of \~ord tranof(lrfl and ('hnn.,., fUllCt'ioll witnirs 40 microseconds ai:ter WC oVt>rflow.

Non:: 'l'ho \fC is in locntion //50 ( 'file <.'1\ itl in loclItion 77!3l I

'-------~--'

DlC '0"" NO "-IOn ORA 101

NUMBER ,t.< > v.""

SHEET .11.. OF 2-


TITLE '!'COll Sp0C 11 l("lllon

"LAG

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

ERROR FLAG I-"ivo types of errors can be d<'tccb'd in th<' uso ot:: DEC'tape:

I'lllllng Error parity Erro.: SC'l('ct Error End ot: 'rapo Mark 'l'rack Error

For ail "rror" thl" EI' 1& raised, a bit is s('t In the status roglstcr and an inlorrupt occUJ:S (if the cnahle-to-l.ntC'rrupt lnt hilfl hN'n set). 'l'he D'1'5F tnatrltction bkips on the incJunivc OR oi: ~hose error b1tS: henco, C'ach Rtatus bit must be ch0 cked to d('t('rffiln~ the kind oi: t'rror. For all bUl the- l>arity error, tre 1l(')('(-(('<1 t1'.l/l'1!'ort iH 8topppd nnJ tllt' F.P i"< l'<llsNl lit th,> tlntC. of th(' ('rror d('trction. No nrF (">(,(,lIr'I, }o'o1' 11 p.\rity (lrror, th.· no ),ll rl'millll~ 1 (Lr'" motion I'ontlrl\l('l'\ IU\<.I I tl<' ~~. \ 1 1:1\ \'IN\ '} tl1\\\ I t (\n' Oil'. \ Y wi th t hc, f)'l'[.' in ~'M. Onl\' 1 lnt.·rrupt occur'lf ht"!1cC I l\.-, proqr"m mU'll chpck t h. 1:1',

A parit, ,'rror in eN rl:li-1"1I tIl(' £1" ilt til(' ('lid of t ,I" block 1n which the l'arlt) occur<J cau~ln~ an interrupt Ilt C'nablcd). Ii no progra~ aetlon is ta~en, e.g. stop transport or revers€, and re-read, data transfrr cnntlnues anu lh<' 01'1-' 1S ralded and causes an lnlC'rrupt "t WC ov('r[low "\nd end oi: fll1dl j'lock read.

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

Dt:C FORM NO 11-'022 ORA 108

NUMBER I REV ,C;I-ll v' ..l~

SHEET 2L OF ~

ENCINEERING SPECIFICATION .. CONTINUATION SHE£T

TITl.E TCOS Specification

Tal,le 1 - 5

FLAG

MARK TRACK A mark track error occ~rs if the D~Ctape ERROR 81'1' t control fails to recognize a l<lgitimate

mark on tho mark track. 'rhe error may occur in all but tho move or wrH .. til1ling and mark track functiona. In both eM, and NM, the Ll" is rais('d, the tape transport stops and cln interrupt occurs.

END OF TAJ»E An E~' error occurs when the DECtape enters ERROR BIT l either end zone with the GO blt ~ 1 and the

forward/reverse dlrection bit set to contlnuc in the same directlon. In NM a •• d CM da ta transfer ~tops at the last l~gitlmate block, the BF is ralsed, the tape transport stops and an error jntorrupt occurs.

SELEC'::' ERROR Select Error * - A s01ect error will result BIT 3 under ani of the following conditionsl

J. Scl~ctio"l of none or mOrc than ] tran·'port. 2. Attemrt to write on D~Ctape transport

with WRI'l'E LNABLE/WRI'I'': LOCK switch in t~e WRITE LOCK position.

3. Attempt to select unit f':>r any fUllction with DECtape transport P!:r.tO':'E/OI'I'/LOCAL sWltch in the orF or LOCAL (off-line) position.

4. Attempt to ~Tit~ tlming and mark tracks with the' DECtap~ control switch in any

I I

posltion other than writ~ timi"lg and malk :

J

DEC 'OR. NO ,..,m 0 .. 10101

IS~E ICg~EI NUMBER 1 REV "cc(~·c.- "'~

ENGINEERING SPECIFICATION .. CONTINUATIO:-.l !.HEET

TITLE Teon Sped! icaLion

F'I..JI.G

SFLECT ERROR (continu~di

PARITY ERRO~

TIMING ERROR

I

DEC FORM NO ,,1-'0:1 0"10'08

5.

6.

Table 1-5

trac'k. At'PnlPt "0 perform any function othe_ than wrl to t lffilng and mark tracks W1 th the DECtape control flWltch in the wrtte timing and mark track posltion.

Attempt ,to execute unused funct10n (<l<'tal

I code 7).

*No-tape or tape-run-off-rcel cond1tlons I are not detectable.

I Parity Error - 1\ parlty error occurs only during the READ DATA function for a hardware computed parity check character (PeC) fallure.

Tlllllng Error - A tlmlng ~rror (program ma lfunc t ion) ~s a data mlSS or proqram failure to clear the DTF status blt. A tlming error OCClirR also 1 r lhu program Ilwi tchcs to REAl) or WRI'l'E DATA functlon whlle the> DECtllpe 1'1 currently paqaing over a data IIr!'11 on tapo,

-

I S~E I C,~~£l NUMBER J REV "1\(' • ..... ,;) ., SHEEr ..i..!:.. OF .!.:,()


TITLE TC08 Spec ification

1.2.2.2

DEC fUR .. NO 111-10:: ORA 108

~he Data Transfer Section

The data transfer section (Figure 1-4) handles the flow of information between the multi cycle data channel of the computer, and the magnetic read/write heads. 'rhcrc arc two typoe of information - data, and instructions from the tape which tell the controller ~hat to do with the data. The instructions arc record('d on thc mark tracK, which feeds the window registnr and subaequont!y th~ data control lOglC. ThlS combination looks at the mark track codes ar1 from them determines whether the tape heads are over end zoneD or recordlng zones: and lf over recordlng zones, where in any particular block. Meanwhlle, data from the thrco data heada, and tlmlng pulJes from the t~lng tra~k he~ds arc fe0dlng the data buffer and the data control loglC respectively. The timing pulses are used to strobe th(' mark track and data track information at the proper tlme. Data comcs into the controll('r in bytos of three, there foro the data buffer is ba ... ic411y t,>/o 6-bit "lhift rc(;psters.

As the data is shlfted ln, the longitudinal parlty buffer cal.~ulates the parlty of each track. When a complete bleck has been read, this buffer should be all ones if no error has been detected. If it 1S not all on~s, then a parlty error flag

SHUT ..ii2 OF $'d


~------------------------------------------------------.--TITLE 'l'COH '>"N'l f 1(',\ t Ion

DEC FORM HO 16-1012 ORA lOll

1S ralscd.

Durlng a Read operatlon the data buffer accumulates a complete l2-b1t word, and transfers it to the DECtape buffer for temporary storage. The Data Channel flug 15 then ra1sed and a m\lltl cycle d.lta chennel bl.eak lnltl'lted, Durlng the break, thl.s word 19 trans ferre, out of the DJ:Ctape huffcr 1nto the locatlon sp0clfled by the current addross rcqi<;ter at Jocatlon 7750. The would count at locatlon 7751 1S 1ncroment('d, The computer lS allowed a maXl!',\um of 33 us, to COMplete tIns operatlon.

If th". computer has not responded ln tlme, a~ error flag is ralsed to show the tlmlng error.

Alternately, lf a wrlt~ operation 15

requlred, the 'fC08 requests a multl c}cle data chennel break. The compuler tranrfers lhe word lO be writt~n into th., DEC! Ilpt' buffl'r, which 15 then transferred In. a t~e Data R~ffcr nt the rlqh~ time. rrom the data LU1[rr lt is shlfted out and wrltten onto lhe ""'po, M"anlolllJe, the 1C08 reque3t'l another word from lhe comrut~r as 'loon db th€' DEClapo buffer is ernptl<~d lnto the Data Euffer, and the TCOS 1S ready to write tho next plcce of data.

ISlfE IC?,9E 1. ____ N ... u_M .... B_ER __ l_R ... E_V.,j A ... J ,Cq v' .. SHEET ..i.L Of ..2L

2NGINEERING SPECIFICATION .. CONTINUATION SHEET

TITLE Te08 Spcc~fication

At tho cnd of a transfer, tho word count OV('l'f1ow'>, ancl the Dt'Clap'-1 r: tnq is rL'liscd. 'l'hell a Pl tc. 10<'81 i.on ¢ is lnitlAt~d, aR explained in Tn~ll 1-4.

1.2.2.3 The Formatter S~ction

DEC '0 •• NO '.-'DII DRA '01

D~fore a reel of DECtapo can Le u~ed in a system, it must first Le formatted. This involves writinrJ the proper mark track codes, numbering the data bloc~s, and writing in the timing track. A program called the DEC tape Formatter is available for do1.nq thiB. '1'ho program apcciCic8 th~ Writo Timing and ~nrk Track function and !ran8f~r8 tho corroct mark tract, code throuqh tho data chZ'nnol intI') the DECtapc> huffer, as shown in fi'luro 1_',. Only bit5 0, 3, 6 and q dro uRed, Tho controller switch must bo on WRTM. 'l'he.,,, l>its

• arc lo~dcd into the plopcr shift register of th!' Data nuffor, whh:h then shlfts them into the mark track wnte head and BO to the tape. In normal mode the DECtdpe flag is ralsed after each word i~ transferred to the mark track. In continuou'l mode, tho DECtape flag is raillC'd wh(>n th" Word Count oVArflow5. Ncanwhile, the- timinq trac!t writ I'r i.~ rN'ording clock pultll"l' on the limlnq trllck.

I~~~]~:_EI~~~~_~~,)~ I REV

SHEET ..£..1.. OF 41J

ENGINEERING SPECIFICATION .. CONTINUATI()N !;HEET

TITLE 'ICOH Hl",dt i('n! iOIl

DEC '0." NO ".'DII DRA tOI

'Ill!' J.lock tllIt\l) ','r . tlrt, writ1 en iI,

WHL1'1~ ALI. morit' <I L t t'r t he milt k .\I,d t lmi.nq traC'kl1 IwvC' J'CNl wrlttl.rl.

I.SlZE.IC.Oo .. 1t1 NUMB£R-, REV A ~q ~~r~'o';~

SHEET ~ OF ..§!!..

ENGINEERING SPECIFICATION TITLE ~'C08 Sp(>clfic~tiol'\

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.. 0" rt '<; :,-

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D'C '011. NO "-'011 DRA 101

\11 ;'1 "t' "l

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t1 i'" ~v: 'f<' .1 5

ENGINEERING SPECIFIC" TION TITLE

,,, ';; 1\

", (', f!

'leO!! 8PN'lflt'dllOIl

I

Baa

CONTINUATION SHEET

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REV

SHEET ..:.L OF _Or)

CONTINUATION SHUT

-j}= '"

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f;, ",,'-, -----~-1·,EI~I-'---~

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DtC fO"" NO ,/I-'D22 ORA 108

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SHEET ~ OF-::::i!!....


TlTL! TC08 Sp('cificatlon

i\

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r,.. +I ~~ «I

tI 10< i\}« <1.1

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NUMBER RlV ,cel! 0 .r'.

OIC 'OItM NO ".'OIJ 8M!!T _'_' _ 0' ..t.Ji!.. ON. tOI

ENGINEERING SPECIFICATION a~Dama CONTINUATION SHEET

TITLE Te08 Speclflcatlon

1.3 'I'COS Operator Controls and Indicators

'l'ho rd.ngln 8wildl, WH'l'M/NOHMAtJ, cllld an array of light "I 1\1.'6 all. with whi~'h the IIpl'lIi\\pr flf til(' 'reoo eOl'\trollt'l.' lHWd concert! hilnsclf. 'I'ho operation of the transports is cxphllned in thoir ): C'sp('etiv(' manuals. Tho 'l'COS swth:'1 (locntcd on ·~hl..! left-han:! side of the loglC panel) puts the contro11('r 1n wrlte timlng and mark track mode or else in normal, or everv other mode, depending on the settings, SW'fM or NORMAL r(>spoctivE"1.y. Table 1 -6 cummarizes the function of each indicator.

Table 1 - 6 The Indicat~r Panol

lNDICATOR INDICM'OR FUNc'rrON NAME

USR The Unit Select R<'gister which sp<'r.!ifies which transport i~ to be activatc~.

MR Tho Motion ~(!9bter specifies the three possible movements of the reol.

FR This four-bit !'unction Regitlter speocifiol'l Ollt'

of c<'veral possible operations in either of two l\\odf'!!I.

!!:NI tnnblo the il'lterrupt whon on indicatoR that the cont-roller elln cauoo a progrllm intorrupt

L whon nn t'rror fhg or tho or:Ctap<, flag hI Sl!'t.

-

IS~E le::EI NUMBER ,ccf, ~ <) "

otc fORM "'0 '.-Ion ORA 101

I REV

-

.. CONTINUATION SHEET

TITLE 'l'COS Spocification

INDICATOR NAME

'I'IM

O'lT

OF

WC

U+M

PEe FORM NO nllA 10!!",

Table 1 - 6

INDICATOR FUNCTI0N

'rhis flag indicates timing errors.

This lamp reflects tho state of the OECt~pe flag • (011 indicates an operation completod).

The Data Flag i~ set when tho controller needs to transfer a data I"ord through the thra -cycle break.

_" ....... ~Fl'-e-~ -- -The Word Count (lag is zeroed whenever the word count register overflows.

-This i.. the output of the up to speed delay. When tho light i8 on it indicatos that th~ tapo is not yet up to speed.

1'~f.1 C~~~II HUMDt" Rtv ,\l.I-' ..... ":' SHEET ..::L OF .~

ENGINEERING SPECIFICATION ta~nca CONriNUAT10N SHEET

TITLE 1C08 Sprcificatlon .----- --

---INI.HCA'l'OI\

NAME

-Er

MK

END

SF:

----liAR

DEC fORM NO 11- '()11 OIlA It'll

-~

'1'abl(' 1 - (,

.... ~_..,....... .. ,.,....-~~ ..... ~ ~" ............ :>I;"""~~ ~--. ""~ 'J. 2':..,.:1 ~'::::t -"'<=~ -"'-'" --INDICA'l'OR F'\JNCTI0N

This flag lS set if anyone of the flV" followlng error flags come up. Tpesc conditlons stop transport motion. except for the parlty error of bit 4, and all cause a program lnterrupt if the f,cility is enabled.

Th~ output from the mark track instructlon roqlstrr iq te~ted every tlme an in~truC'tlon

OP1H'tllU. If no inslrurtion a~prars, this indicatl''J that tho mark tr~t'k h not rt~C'or(l"rl

properly anu thorefon~ an error has occurred. MK and th"rofor(' f:l' arc R0t.

1 f ttl(' instruction rngilltt"l' of th.~ mark traCK dc('odos un ('nd .:onc incl lca tor. this flag and IT aro /lC't. A l'Iub!l0qul'nt pl"oqram intorrupt atitnulatC's the computC'r to determine the cause of the lntC'rrupt.

'l'hiB fl1\CJ In<hcatC''l A('loc\ (>rrnr~ whon rnntro} mdtdl at..ltC'. and Statull A function states aro r0mpAfNl i\nl1 fn\lnc'\ j TW(ln('PI(l\l~.

'1'his ('rl'\1' Of'curn if tli(' lOl1gitudlna1 paritr b\lf4'('l' flhow'> im (,l'rot' at the l'nd of 1'1 blo ... ·]t; d\lring

a road data function.

I S~E I:~~EI NlIMB£R I REV \ ... c~ -..; -.J ~

,...

.. CONTINUATION SHEET

TITLE TCOB Specification

ItmrCATOR NAME

UTI

\If

Wl'M

LP8

STATE

DIC '0". NO nAt flU11.

'l'ablo 1 - 6

I rND'ICA'1'OR r'UNC'l'ION I

I

This Up-to-Speed flip-flop is set as 800n !lS the tIlpe t\:'a"lIport ralchea In accephbll$ I!Ipflfld.

Thia t'1.~, when a~t, indicates that the writer! are onabled.

I ~

i 'l'hils mOOM tho sW'rM/NORM1I.I •• wi tch h ~n writt}

! tittlit'l11 and mark track modo (SW'l'M).

I I

Th~fta nix indiCAtors rerl~ct th~ state of the Longitudinal Parity Buffer.

These bits make up the state generator, a ring counter, which steps from an Ldle ~tate through : fivo other states and back to idle, a~ a block I passes tho tape heads. I

IS~f.I~~?f.l NUMBER I REV ·v'r, .~ It~

SHE£T ..1Z.. OF ..s....

ENGINEERING SPECIFICATION mmaDma CONTINUATION SHt.ET

TITLE TCOS Speci fication

F6rCATOR NAME

I I BH

ftC

D

l F

CK

I

1

DtC .011. NO 11-1",1 Dn4101

Table 1 - 6

, WOTCATOR rtJNCTTON

810ck Hark is the first bl.t to which the state generator moves. It is sot wh~n forward block makr is in the data buffer.

The Reverse CheCKSum state oecurs wh~n the Reverse pec MarK cell is er.counter~d.

Th~ Data State stal'ts with the first blOCK that contains data (Tho Reverse Final Mark) and finishes wh~n the ncxt-to-l~st data block (tho profinal Mark) Passos the road h~ads.)

The FLnal State occurs during the last cell which contalns data (the Final Mark.)

The Checksum State occurs when the pce Mark I cell p~sse9 the heads. Durmg this state, the checksum iE depositpd in thp pce Mark, if thn TCOS is writing, lt ~h~ck9 fer a parity error, if tho TCOS 1S in a read operation.

-

I The idle stat(!.

I S~E 1~~~El NUMBER 'c:.CI> "".,d

REV

SHEET ..lL OF 5cJ

ENGINEERING SPECIFICATION CONTINUATION SHEET ,-TITLE 'I'con 13pori fiC'11 iOIl

'rAble 1 - 6

-- JN~lCA'~---------------'~------~--~------~--------; NAME !NDTCA'l'OR FUNC1'TON

MC

CO, Cl

The!'!e thrN' bitH r~prf'.(jnt a thrue-bit switched tail counter composed of bits MeoO, HeOl, MC02.

ThOll" IH"O tlw flip-flope which t'vn!!t1tut~ the c~unt~r9 of th~ timing generator.

v'm 'I'hese lights r ... flect the statesof tho 12-oit OECtapfI bllffN.'.

1------------------------------,-------------________ __ WINDOW The Window Register is a simple shift teglster

which receives the instt"tlot!nn (,'Q(k~ frOlIl ttw l1\ark trJ.ck ar.d u~cs the codos to cet the State

I Generator.

------------------------~

DEC FOAM NO 'IS-'''II ORA IDe

NUMBER "tee,", -v .(~'!!

SHEET ...1:L OF 51


TITLE 'l'C08 Speclficatlon

DEC 'ORM NO 'IS-lOll ORA 101

Tho following is on ('xample of progr<1mming the 'l'COS. 'I'he program l.'3 wr1tten 1n PDP-8 Assembler languages.

Problem I Find a given block, number 5. Tne transport number lS 3.

TAG

SRCIt,

1,

FLAG

INSTRUCTION

rJ ION CLA TAD 3614 DTeA D'I'XA JMP I SRCI:I

M'S~

JMP + 2 .7MB TAPE HLT

TAPE, CI~

JII'RB DCA 'rf}olp ,\1.0 0001 SZJ\ LILT etA 'l'AD 'l'f;~P

A.'l0 1000 f>ZA JMP ERROR JMP BLKNO

REMARKS

/Turn on PI

/Statu8 A code for search,etc /C1Nlr StatuA A /Load Status A /Roturn

/Skip on flag

/Error, DEC tape flag was not set. Another systt'm flag caused the PI

/Rond ~tatuf1 B /Storo It. <.Iway /MasK for flnc; /Flag is on

• INO flag - something wrong

/Rcturn status B /Test for error flag

/Go to error subroutl.ne /GO to subroutl.ne to get blOCK

SHEET .!:!..L. OF ~


TITLE TC08 Speciflcation

BLKNO, CLA TAD I CA TAD 7773 SNA JMS WRT CLA TAD 5 CIA TAD :i: CA CIA DCA WC CLA TAD 0100 DTXA ION JMP 1 SRCH

/Get block number /Tcst for block '>

/This is block 5-start writl.n /Not block 5 /Get a 5 /Make 2' s compliment of 5 /Add pr~sent block 12's cOmpliment it IPut result in WC

IGet next Status A /X'OR lnto Status A, CM ITurn PI IGo back to main program

NUMBER ~c.(";. v·y'..I

DEC fOR .. NO '.-'(1;'; DIIA loa SHEET ..!:!L OF StJ

ENGINEERING SPECIFICATION .. CONTINUATION ~HE!T

TITLE Te08 SPCCl.flcatlon

1.5 Equlpmcnt OeSCrtptlon

1. 5.1 Hardware

T\w TeOH Con~l;,tn of two fl,ountlnq ..,anels of M 'wrl('S 10'1 1<:, an tll<lt<.:atot f,nn, 1, illId ,'<;<Ioclated I'owcr sU~Dl10S dnd c0ntro\s. 111(' loql.c and lndicator panel are mounted In the samt' cahlnct as lhe power 8"pp1H";, the power ('ontrol and tape tr"nsports ac.cordlng to the conf19"latlons descr1Led 1n the POP·~ Installatlon Manual.

1. 5.2 EnvlLorunental Requirc-mpntl1

The OECtape ~ystem 1S de~1gned to operate in a temper~turc range from 65 F :18 C) to 90 F (35 C) 14t a relat1ve hum1.u1.ty of 10% to 55% w1lh no condensatlon. The alr should be free of dust and corrOSlve pollutants.

1.5.3 Power Re'luil;'cments

Table 1-7 luts thE' primary power requir(>!ONlts for a DECtolPC system.

Table 1-7 DECtapc Power Requirements

Configuration No. of AC Dissipation (no. of Cablnets Current Transports) Heat Power

TU56 (Amps) . BTU/UR (KWl (max)

1 1 4 1,516.6 446

2 1 .' 2,706.6 7%

3 1 10 3,896.6 1,14(,

------ f-o--.

I 4 2 13 ",006. r, l,olC\(, ----- -I S~E IC~~EI NUMBER I REV 'c.o ;" ~) }.

Ole fOlIM 1110 .I-Iltll OR'loa SHEET ...:Jj._ OF .::ii:L

ENGINEERING SPECIFICATION CONTtNUATtON SHEET

TITLE TCOS Spccitlcatlon

1.6.1 Delays and clock

1. 6. 1. 1 The pos ts on the G888 readt~r wrl tors should ~ be adJusted. They are pre-set 1n Module Productlon.

1.6.1.2 Set the XSTA Dy to 5 us. ThlS delay will be ~rlggered by the folloW1IIg program:

1.6.1.3

1.6.1.4

.llil~'§' IN~~ ~~

1)000 7604 LOdd AC from 5R 0001 6766 Load 3tatu!.> A 0002 5000 Jump to Zero

The output of the delay ~b on p1.n D18T2. Adjust the bottom pot of the M302 1.n 016 so that t~e output sl~nal has ~ posltlve durat10n of 5 m1croseconds.

The Status A reglster car. also be tested w1th th1S program. By plac1ng the data sWltches to A "1", the correspondlng Status A bits will be set to A "I".

To check tape motion, set switches 0, 1, and 2 to select a lransport and J and 4 to determlJlc direction and motion.

1.6.2 Sotti~q the Clock

1.6.2.1 The M401 clock will be cnat-led by the fo1\owlng procedure. Do not atte~pt to ground any slgnals wlth Jumps: or modules may be destroyed. Toggle In the followlng prograM.

NUMBER I REV \c.I:~ ·v-.r~

DEC 'ORM NO '.-'D11 ORA toe SHEET ..!t.:L OF £L

ENGINEERING· SPECIFICATION CONTI~'UATION SHEET

~T_I_TL_E ___ T_C~0_8~s~p~e~C_l~f_l~c~a_t_l~o_n ____________________________________________ _____

DEC 'O"M 1110 t.~,on ORA IU'

0000 0001 0002 0003 0004

lNS~

7(,04 6762 b16'J

noo 5002

~..£!3.~

Load AC from SR Clear Status 1\ XOR Status A Clear AC Jump to 2

Rf'loove the tape from the transport and place It on 11ne wr1tp. enable. Turn the sWltch WRTWNORMAL to WRTM. Set the data sWltchf's 4, 5, 6 and 7 to a one (1): h1t Load Address and start. A WRTM functlon w1ll be executed on unlt elght (8), and the clock wl11 run.

T;\e output of the ClOCK is on pln D1502. AdJust the pot on the M40l 1n Dl~ so that ~he pulse reprctlt10n rate at this pin is 8.~3 micro~econds.

1.6.3 The Unit or Motion Delay

1.6.3.1 L~ad th~ DEClape ~as1c exerciser and run test zero (0) to make the tapo rocK.

1.6.3.2 'rhc output of the U + M Dy 1S on. pin D14Kl. Adjust the top pot on the M307 in 014 so that a positive ~lgnal wlth a positlve duratlon of 120 mlliiseconds appears on this pill.

1.6.4 The R~te D~lay

1. 6.4.1 The' output of th~> 51' Dy is on pin D14/1Z. AdjuBt the botlom pot on the M307 and D14 for a posltive signal with a duratlon of 70 micro'l~\'onds on this pin.

1.6.5 Cross Talk Delays

1.6.5.1 The oUlput of TPO X'l'f.K Dy is at pUI A14F2. Adjust the top pot of the M302 in slot A14 RO that this pin glv~~ a lositlV~ signal with d dur~tion of 10 microseconds.

NUMBER "c...:-;-.t,;I ,~

SHEET ..!:!.::L OF _£P_

CONTINUATION SHEET

TlTLI Te08 Specification

1.6.5.2 Tho TPl XTLK Dy output is at pin A14T2. Adjust the b?ttom pot of the M302 in location A14 so that this pin glves a posltive signal with a duration of 10 microseconds.

1.7 Summary of Statlstics

Tho following tables summarize the errors, functions, ~la9s and critical timinn specifications of a DECtape system.

Table 1-8 Summary of Errors

--r-UN-c-T-I-O-N----'----E-RR-o-R-(~I-N-N-O-RMA-":"L~OR:--C~O~N1'~I~~U~(\:':"U~S-M~O~D:-::E~)--1

Move

Search

Read Data

Read All

Iwrite Data

o[e '01111 .. 0 ORA totA

Select Error EOT·

Select Error EOT* 'fiminq Error Ml< TRK Error

Select Error EOT* 'l'lming Error Parity ErrOr Ml< TR1< Error

Select Error EOT* Ti,."inq Error Ml< TRK Error

Select Error EOT* Tlming Error Ml< TRK Et'ror

ENGINEERING SPECIFICA TfON TITLE TC08 Speclficatlon

, I

-End of Tape

SHEET ..!t.:5. OF ~ ... CONTINUATION bHE&!T

Table I-f{

- j

lo'ttt-.C'I'lON EH,!{OH (IN NOll./,·AL OR CONTINtlOUS 1>10D£) I

--_._------.- .. _----------\

: Write All. Select Error

EOT*

Timlng Error

MK TkK l'!t:ror

Wrih Tillliht;J Scleet trror

& Mark Traoks Timing Error

*End of tapti

-

, i I I

I I

I

I ! I

t.~r. (~o~t:1 NUMIER I REV ""c:.'''i- .. >.I!. ole '01111 NO "~'''n OIlA lUI

-SM EET ..:t:f.. OF .iiJ2..

ENGINEERING SPECIFICATION .. CONTINUATION SHEET

TITlE TeOS Rpecification

Table 1-9 Summary of Functions

IFUNCTION NORM.~L MODE (NM) CON'l'INIJOUS MODE (CM) 1 r' I

~. Move ~rF' No Interrupt CA*, Ignored Same as NM WC** I Ignored

1. Search DTF: Interrupt at each DTr: Interrupt at each block mark block m~rK if ~C has

overflowed CAl toJo incremented CAl Not incremented we, rncr~mented at WAt Incremc!nted at each

each blocl~ mark bloC'k mark

~. Read DTF, Interrupt at end DTFI Interrupt at end of DatA of each bloc.k block If we has

overflowl'd. CAl InC'rement.cd at CAl Incremented at

each word transfer each word transfer WCI Incremented at WC: Increl1ented at each

each word transfer word transfl'r.

3. Read J)1'1"1 Interrupt at cach IYIt', Interrupt at WC All word tranafer overflow

CAl Inorementcd at each ~AI Incremented at each word transf(>1' word transfer.

I

IS~E IC~~El NUMBER I REV ,<-v.' '" .> ~

DEC FORM NO "-Ion ORA 101 SHEET .£!l. OF .5£

ENGINEERING SPECIFICATION

TITLE TC08 Spcclilcatlon

'l'aLIe 1-9

~"Ne,',ON NORMAL MODE (NM)

I we, Incremented at each word tJ:dnsfcr

\4. Write Same as 2. Data

5. Write Same fl9 3, 1\11

lb. Write l'Flme as 3. 'riming Ii< Mark 'l'rackel

7. tlnullcd,,·1t

CONTINUATION ShEET

CON'l'lNUOUS MODE (CHI

WCI Incremented at each ,",ord lransfer

Same as Read Data

Same ~s Read All

Slime as !lend 1\11

*Current 1\ddress (CA) 15 in location 77~1 "Word Count (\'1e) is In locat~on 77 c O

·**If u~pd hy rnIRt~ke. thu control qlv~u 0 Sul~~t E.ror (SB)

DfC ,ORM NO I." Ifln 014A lUll

L~ I


TITLE Tena Spec1ficatlon

Table 1 - 10 Summary of TunUlg

I

I I

I I

OPERATrO~l

Ti.1De to answer data channel request

Wor& Transfer Rate

Start T1Zlle

Stop Tune

TLrn Around Time

Search - Read Data Functl.on cha~ge for present block

Search - Write Data Functl.C'ln change for present block

Read - Search Functl.on change fer next block number

Write - Search Functlcn change for next block number

TIME

Up to 33 microseco~ds

1 12-blt ~~rd every :33 microseconds

1 129 Block every 25 mil I 1seconds

375 mill!seconds (~2~)

375 m1lliseconds (~ 2~~)

375 ml1liseconds (~ 2~)

Up to 400 m1croseconds

Up to 400 m1corseconds

Up ~o 1000 microseconds

Up to 1000 m1croseconds

--- - -------------------------

OEC fOR. NO '5-'022 ORAt08

I REV NUMBER ,CCT -_ -:.

SHEET ..::t!L "F ~

ENGINEERING SPECIFICATION

TITLE Te08 Sp€c1flcatlon

Table 1-10

OPEP.ATIO~

OTF to beg1nnlng of next data plock

OO'F Occurrer.ce:

Move: !;:M. eM Search: ~~1

Read Data: M Wrlte Data: ~""M

Search: eM Read Da ta: O~

Wr1te Data: CM

Read All: ~"M

Wrl.te All: !~

Wrlte T1ming & Mark Tracks:

Read All: CM Wrlte All: CM

NM

Wrlte TlmLng & Mark Tracks: eM

DEC FORM NO '6-'022 ORA t08

CONTINUATION SHEET

1.7 Jlllillseconds

Never

Every 54 m1111seconds

(we) X53 mll11seconds (No. of blocks)

X53 m1111seconds

Every 33 nlcroseconds

(we) 33 ml.croseconds

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Documents

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