IBM 5150 PC Technical Reference (6025005, August, 1981) (PDF)
IBM 5150 PC Technical Reference (6025005, August, 1981) (PDF)
IBM 5150 PC Technical Reference (6025005, August, 1981) (PDF)
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lOC OBJ LINE SOURCE<br />
755 ; ---------------- ----------.----------------<br />
750 ;TEST .08 <br />
757 INITlALIZE AH1) START CRT COUTROLLER (6845) <br />
758 TEST VID EO READ/WRITE STtmAGE. <br />
759 ;OESCIHPTIOU <br />
760 R£SET THE VID.fO EtlABlE SIGNAl~ <br />
7., SELECT ALPHANUMERIC troDt. 40 * 2:5. B & W. <br />
7.' READ/URITE DATA PATT~::flS TO 51G. CHECK SIG -ADDRESSABIlITY. <br />
763 ; ---------------------------------------.---<br />
E352 764 E6:<br />
E352 f46D 765 AL.PORT_A ;RUO SENSE SWITCHES<br />
El54 8400 '" AH,C<br />
766 HOY<br />
E3S6 A31000 767 HOY EQUIPJUG,AX ;STORE SENSE SW INFO<br />
£359 2430 76a .NO Al.'30H ; ISOLATE VIDEO SWS<br />
Elsa 7503 7•• JHZ E7 I VIDEO SWS SET TO 01<br />
E3S0 £99800 77. JMP fl'<br />
;SKIP VIDEO TESTS FOR BURN-IN<br />
E36D 771 £7: ; TEST.VIDEO:<br />
£360 86£0 772 XCHG AIi.AL<br />
E362 Bort3o 773 C"" Alt,3DH ;B/W CARD ATTACHED'!<br />
£365 7409 774 JE Ea ,YES - SET MODE fOR 8/W CARD<br />
E367 FECO 775 rHe Al lS£T COLOR I'100E FOR COLOR CD<br />
E369 80fC20 77. tHP AH,20H 180X25 MODE SElECTED?<br />
E36C 7502 777 JNE Ea iNQ - SET MODE fOR 40X25<br />
£36£ B003 77a HOY AL.3 jSET MODE FOR eOX25<br />
E370 779 E8: I SET_HODE:<br />
£370 50 7a. PUSH AX ;SAVE VID'EO "'ODE ON STACK<br />
E371 2.1.[4 7a. SUB AH,AH lINITlALIZE TO ALPHANUMERIC I1D<br />
E373 COlO 7a2 IHT '.H ;CALl VIDEO_IO<br />
E375 S8 783 pop AX JRESTORE VIDEO SENSE SWS IN AH<br />
£376 SO 7a_ PUSH AX J RESAVE VALUE<br />
E377 8800BO 7a5 HOV 8X,OSOOOH IBEG VIDEO RAM ADDR BIW CO<br />
E37A BAB803 786 I10V DX.3B8H IMOOE REG fOR B/W<br />
El7a 890010 7a7 HOY CX,4096 iRAtI BYTE CNT FOR 8/W CD<br />
BSO 8001 788 MOV AL,1 ; SET MODE FOR BW CARD<br />
£382 SOFC30 7a. CHP AH .30H lB.IW VlDEO CARD ATTACHED!<br />
£3.55 740B 7•• JE EO I YES - GO TEST VIDEO STG<br />
E3S7 BMOBa 79l HOY BX.OB800H jBEG VIDEO RAM AODR COLOR CD<br />
ElBA BADS03 792 HOY oX,30aH ;NOOE REG FOR COLOR CD<br />
E36D 890040 7.3 HOY CX,4000H ;RAM BYTE tNT FOR COLOR CO<br />
E390 fEce 7•• DEC AL I SET f100E TO 0 FOR COLOR CO<br />
£392 7'5 £9: ; TEST_VIDEO_STG!<br />
E392 EE 79. OUT OX ,At. iQISABLE VIDEO FOR COlOR CD<br />
£393 S£C3 7.7 NOV Es,ax JPOINT ES TO VIDEO RAI'1 STS<br />
£395 884000 R 7.8 MOY AX ,DATA. IPOINT OS TO DATA SEGM'ENT<br />
E39S SEDS 799 HOY DS.. AX<br />
E39A 813E72.oo3412 a •• CHP RESETJLAG,1234H ; POD INITIATED BY KBO RESET!<br />
BAD 7400 8.1 JE flO I1ES - SKIP VIDEO RAM TEST<br />
E3A2 8EDB 802 HOY DS.BX ; POINT OS TO VIO'£O RAM STG<br />
E3A4 Ee76FC a03 CALL STGTST_CN'T ;GO TEST VIDEO R/w STC;<br />
BA7 7406 a04 JE flO ISTG OK - CONTINUE TESTING<br />
flA' BA020} 8.5 HOY OX ,l02H ; SHUP I Of BEEPS<br />
BAC E6810Z 8•• CALL ERR_BEEP ;GO BEEP SPEAKER<br />
807 ;-------------------------------------------<br />
80a ;TEST.09 <br />
a ••<br />
SETUP VIDEO DATA ON SCREEN FOR VIDEO UNE TEST. <br />
alO<br />
8ll<br />
8l'<br />
;DESCRIPTION <br />
EtlABLE VIDEO SIGNAL AtID SET MODE. <br />
DISPLAY A HORIZONTAL f\AR ON SCREEt{. <br />
al3 i ----------------------------.-------.- - - ---<br />
E3AF 8l' ElO:<br />
E3AF 58 815 POP AX jGET VIDEO SENSE SWS (AM)<br />
nBO 50 al6 PUSH AX JSAVE IT<br />
UBI 5400 817 HOY AH ,0 ;EIIABLE VIDEO AND SET MODE<br />
E3Bl COlO ala INT lOH j VIDEO<br />
E3B5 SS2070 8"<br />
HOV AX.70Z0H ;W~T BLANKS IN PEVERSE V,IDEO<br />
E3B8 2BfF 8'. SUB DI,Dt ; SETUP STARTING LOC<br />
E38A B9'2600 8ll l10V CX,CiO ;NO. Of" BLANKS TO DISPLAY<br />
E38D Fe 0"<br />
CLO ;SET OIR flAG TO INCREMENT<br />
E3BE F3 821 REP 5T05101 iWRITf VIDEO STORAGE<br />
E3Bf AB<br />
A-12
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