IBM XT 5160 Technical Reference page 294

LOC OBJECT
LINE
SOURCE (BIOS FOR THE
I BM PERSONAL COMPUTER XT)
11/08/82
3183
3184
I N IT I ALI ZE THE PR I NTER PORT
3185
F030
3186
B8:
F030 50
3187
PUSH
AX
SAvE AL
F031 42
3188
INC OX
PO I NT TO OUTPUT PORT
F032 42
3189
INC
OX
F033 B008
3190
MOV
AL,8
SET
I NIT LI NE LOW
F035 EE
3191
OUT
DX,AL
F036 B8E803
3192
MOV AX, 1000
F039
3193 B9:
INIT LOOP
F039 48
3194
DEC AX
LOOP-FOR RESET TO TAKE
F03A 75FD
3195
JNZ
B9
INIT LOOP
F03C BOOC
3196
MOV
AL,OCH
NO INTERRUPTS, NON AUTO LF,
3197
INIT HIGH
F03E EE
3198
OUT DX,AL
F03F EBDD
3199
JMP B6
PRT_STATUS 1
3200
PR INTER
-
10 ENDP
3201
PC-XT System BIOS (11/08/82)
5-147