IBM PC CONVERTIBLE

0000 MLI LABEL WORD
TBL OF RTNS WITHIN VIDEO I/O
0000
0069
R OW
OFFSET
SELMODE
0002
OlBA R
OW OFFSET
SELCTYPE
0004 0241
R
OW
OFFSET SELCPOS
0006
0290
R
OW
OFFSET READ_CURSOR
0008 0703 R
OW
OFFSET
REAO_LPEN
OOOA 026C R
OW
OFFSET ACLOISP_PAGE
OOOC 02F7 R
OW
OFFSET SCROLL_UP
OOOE 037A R
OW OFFSET
SCROLL_DOWN
0010 03B6 R
OW
OFFSET REAO-ACCURRENT
0012 03FC R
OW
OFFSET WRITUCCURRENT
0014 0430
R
OW
OFFSET WRITE_CCURRENT
0016 02AB R
OW OFFSET SELCOLOR
0018 0474 R
OW
OFFSET WRITLOOT
OOlA 0463 R
OW
OFFSET
READ_DOT
001C 074F R
OW OFFSET WRITLTTY
001E 0201
R
OW
OFFSET VIDEO_STATE
0020 016F R
OW
OFFSET V IDEO_RETURN
0022 016F R
OW
OFFSET VIDEO_RETURN
0024 016F R
OW
OFFSET V IDEO_RETURN
0026 0879 R OW OFFSET WRITLSTRING
0028 0927
R
OW
OFFSET LCD_REQUEST
002A 09E6 R
OW
OFFSET PHYS_OSP _DESCR-REQ
= 002C M1L_1
EQU
$-ML1
REGS_PUSHO
STRUC
0000 0000 TEMPBP
OW 0
0002 0000
BP _POS OW
0
0004 0000 DLPOS
OW
0
0006 0000 SLPOS
OW
0
0008 0000 BLPOS
OW 0
OOOA
0000
CLPOS
OW
a
OOOC 0000 OLPOS OW 0
OOOE 0000
DS_POS
OW 0
0010 0000
ES_POS OW
0
0012
0000
IP_POS
OW a
0014 0000 CS_POS OW 0
0016 0000
FL_POS
OW 0
0018
REGS_PUSHO
ENDS
002C
VIOEO_IO_1
PROC
NEAR
002C 06
PUSH
ES
0020
IE PUSH
OS
SAVE REGISTERS
002E
52 PUSH
OX
002F 51 PUSH CX
0030 53 PUSH BX
0031 56 PUSH
SI
0032
57 PUSH
DI
0033 55 PUSH BP
0034
FB STI
0035
FC
CLO
0036 50
PUSH AX
SAVE AX VALUE
0037
8A C4 MOV AL,AH
GET I NTO LOW BYTE
0039
32 E4
XOR AH,AH
ZERO TO HIGH BYTE
003B 01 EO
SAL AX,l
*2 FOR TABLE LOOKUP
0030 8B FO MOV SI,AX
PUT INTO S I FOR BRANCH
003F
3D 002C CMP
AX ,M1L_1 TEST FOR WITHIN RANGE
0042 72 04 JB M2
BRANCH AROUND BRANCH
0044
58 POP AX
THROW AWAY THE PARAMETER
0045 E9 016F R
JMP
V IDEO_RETURN DO NOTHING IF NOT IN RANGE
0048
M2:
0048 E8 0000 E CALL DDS
004B B8 B800 MOV AX ,OB800H SEGMENT FOR CGA CARD
004E 8B 3E 0010 R
MOV 01, EQUIP -FLAG
GET EQUIPMENT SETTING
0052
81 E7 0030 AND 01,30H
ISOLATE CRT SWITCHES
0056 83 FF 30
CMP 01,30H
IS
SETTING FOR MONO CARD?
0059
75 02
JNE
M3
005B B4 BO MOV
AH,OBOH
SEGMENT FOR MONO CARD
0050 M3:
0050 8E CO MOV ES,AX SET PTR TT V IDEO RAM AREAS
005F 58 POP AX RECOVER VALUE
0060 8A 26 0049
R MOV AH,CRLMODE
GET CURRENT MODE INTO AH
ROM BIOS 2-83