IBM 5150 - Page 169

lOC OBJ
LINE
SOURCE
3331
(AHl=O
3332
3333
3334
3315
3336
3337
3338
3339
3340
3341
3342
3343
IAHJ=l
3344
3345
3346
3347
3348
3349
(AH )=2
3350
3351
3352 (AH 1=3
3353
3354
3355
3356
(AH 1=4
3357
3358
3359
3360
3361
3362
3363
(AHI=5
3364
3365
I AH )=6
336.
3367
3368
3369
3370
3371
3372
(AHI=7
3373
3374
3375
3376
3377
3378
3379
SET HOOE (All CONTAINS I10DE VALUE
(AU=O 40X25 Bioi (POWER ON DEFAULTI
(All=l 40X25 COLOR
(All:::2 80X2S eN
(AlI=3 80X,S COLOR
GRAPHICS MODES
(All=4 320X,OO COLOR
ULJ=5 320X,OD Bill
(ALI=6 640X200 Bioi
CRT 1100E=7 80X2S 8&W CARD {USED INTERNAL TO VIDEO ONLY!
nil' NOTE Bioi MODES OPERATE SAME AS COLOR HODES. BUT
COLOR BURST IS NOT ENABLED
SET CURSOR TYPE
I CH)::: BITS 4-0 ::: START LINE FOR CURSOR
** HAROWARE WILL AlWAYS CAUSE BUN
** SETTING BIT 5 OR b WILL CAUSE ERRATIC
BLINKING OR NO CURSOR AT ALL
(ClI = BITS 4-0 = END LINE FOR CURSOR
SET CURSOR POSITION
(DH,Oll = Rm",coLUMN (0,0) IS UPPER LEFT
(BH I = PAGE NlJt1BER (MUST BE 0 FOR GRAPHICS HODES I
READ ClRSOR POSITION
IBH)
= PAGE Nltf3ER (l1l/ST BE 0 FOR GRAPHICS HODESI
ON EXIT (DH,OL) = R~"'COLl.It1N OF CURRENT CURSOR
(CH,ClI = CURSOR HODE CURRENTlY SET
REAO LIGHT PEN POSITION
ON EXIT:
(AH I = 0 -- LIGHT PEN SWITCH NOT DOWN/NOT TRIGGERED
(AHl ;;; 1 .- VALID LIGHT PEN VALUE IN REGISTERS
(DH,OLl = ROIol,COLl.It1N OF CHARACTER LP POSN
(CHI = RASTER LINE (0-1991
(BXI = PIXEl COLUMN (0-319.639)
SELECT ACTIVE DISPLAY PAGE (VALID ONLY FOR ALPHA HODES)
(ALI=NEW PAGE VAL 10-7 FOR HODES Oll. 0-3 FOR HODES 2&3):
SCROLL ACTIVE PAGE UP
(ALI :: HUMBER OF LINES, INPUT LINES BLANKED AT BOTTOM
OF WINDOW
Al = 0 MEANS BLANK ENTIRE WINDOW
(CH,CLI :; ROW,COLl,J1'1N OF UPPER LEFT CORNER OF SCROLL
(DH,DlI = ROW,COLUNN OF LOWER RIGHT CORNER OF SCROLL
{BH I = ATTRIBUTE TO BE USED ON BLANK LINE
SCROLL ACTIVE PAGE DOWN
1 All :: HUMBER OF LINES, INPUT LINES BLANKED AT TOP
OF WINDOW
AL = 0 MEANS BLAt-I< ENTIRE WINDOW
(CH.ClI = ROW,COLUMN OF UPPER LEFT CORNER OF SCROLL
(DH,Ot) :; ROW,COLUMN OF LOWER RIGHT CORNER OF SCROLL
I BH' = ATTRIBUTE TO BE USED ON BLANK LINE
3380 CHARACTER HANDLING ROUTINES
3381
3382 (AH)
3383
3384
3385
3386
3387 (AH)
" ..
3389
3390
3391
3392
3393
3394 (AHJ
3395
3396
3397
:; 8 READ ATTRIBUTE/CHARACTER AT CURRENT CURSOR POSITION
(SHI :; DISPLAY PAGE (VALID FOR
ON EXIT:
I
At) = CHAR READ
IAH) :: ATTRIBUTE OF CHARACTER
:: 9 WRITE ATTRIBUTE/CHARACTER AT
(BH)
:: DISPLAY PAGE (VALIa FOR
(CX I = COUNT OF CHARACTERS TO
(Al) :: CHAR TO WRITE
IBt) = ATTRIBUTE OF CHARACTER
(GRAPHICSI
SEE NOTE ON WRITE
:: 10 WRITE CHARACTER ONLY AT
(BH) = DISPLAY
PAGE {VALID
1 CX I = COUNT OF CHARACTERS
(AL I = CHAR TO WRITE
3398
FOR REAO/WRITE CHARACTER INTERFACE
3399
CHARACTERS ARE FORHED FROtt
DOT
ALPHA MODES ONLYI
READ (ALPHA MODES ONLY)
CURRENT CURSOR POSITION
ALPHA HODES ONLYJ
WRITE
(ALPHAI/COLOR OF CHAR
FOR BIT 7 OF BL = I.
CURRENT CURSOR POSITION
FOR ALPHA NODES ONLYI
TO WRITE
WHILE IN GRApHICS HOOE. THE
A CHARACTER GENERATOR IMAGE
3400 MAINTAINED IN THE SYSTEH ROM. ONLY THE 1ST 128 CHARS
3401 ARE CONTAINED THERE. TO REAOIWRITE THE SECOND 128
3402 CHARS, THE USER MUST INITIALIZE THE POINTER AT
3403 INTERRUPT IFH I LOCATION 0007CH I TO POINT TO THE IK BYTE
3404 TABLE CONTAINING THE CODE POINTS FOR THE SECOND
3405 lZ8 CHARS (lZ8-2551.
3406
FOR IoRITE CHARACTER INTERFACE IN GRAPHICS MOO!, THE REPLICATION :
3407
FACTOR CONTAINED IN (CXl ON ENTRY WIll PRODUCE VALID
5-76 System BIOS