IBM PC CONVERTIBLE Technical Reference page 66

0306
0306 80 FB 08
0309 77 57
03DB 80 FB 08
03DE 74 3B
03EO F6 C4 80
03E3 74 OT
03E5 31 OE 00B7
03E9 E9 051B R
03EC
03EC 85 OE 00B7 R
03FO 75 26
03F2 09 OE 00B7 R
03F6 80 FB 01
03F9 75 09
03FB E4 61
03FD 34 04
03FF E6 61
0401 E9 051B R
0404
0404 80 FB 02
0407 75 08
0409 80 36 00B4 R 08
040E E9 051B R
0411
0411 30 1E 00B4 R
0415 E8 0524 R
0418 E9 051B R
XLT28A:
CMP
JA
CMP
JE
TEST
JZ
XOR
JMP
XL T29:
TEST
JNZ
OR
CMP
JNE
IN
XOR
OUT
JMP
XLT30:
CMP
JNE
XOR
JMP
XLT31 :
BL,08H
XLT36
BL,08H
XLT33
AH, BREAILBIT
XLT29
LPEND2,CX
XLT95
B_PEND2,CX
XLT32
B_PEND2,CX
BL,OlH
XLT30
AL,NMLCNTL
AL,EN_SPKR
NMLCNTL,AL
XLT95
IS THIS A STATE CHANGE KEY?
JUMP TO CUR KEYS I F NOT STATE CHG
SYSTEM REQUEST KEY ?
YES, GO PROCESSES SYSTEM REQUEST
MAKE KEY?
YES, GO SET BREAK PENDING
BREAK KEY - RES ET BRK P END FLAG
GO TO RETURN
IS BREAK ALREADY PENDING
TYPAMATIC INVALID FOR STATE KEY
SET KEYS BREAK PENDING FLAG
SPEAKER STATE KEY ?
NO, GO TEST FOR CLICK STATE
READ SPEAKER CONTROL PORT
TOGGLE ENABLE SPEAKER STATE
WRITE SPEAKER CONTROL PORT
GO TO RETURN
BL,02H CLICK STATE KEY?
XL T31 ; NO, GO TOGGLE KEYPAD STATE
KLNMLCNTL,CLICILON ; TOGGLE CLICK STATE
XL T95 GO TO RETURN
XOR KLNMLCNTL,BL TOGGLE KEYPAD STATE
CALL NUILSTATE_FIX
XL T32: JMP XL T95
MAKE NUM_STATE RFCT KEYPAD_STATE
GO TO RETURN
SYSTEM REQUEST KEY PROCESSING
041B
041B F6 C4 80
041E 75 09
0420 09 OE 00B7 R
0424 BO 54
0426 E9 050C R
0429
0429 31 OE 00B7 R
0420 BO 04
042F E9 050C R
XL T33:
TEST
JNZ
OR
MOV
JMP
XLT34:
XOR
MOV
JMP
AH, BREAILBIT
XLT34
B_PEND2,CX
AL, SYSREQ_MAKE
XLT90
B_PEND2,CX
AL, SYSREQ_BREAK
XLT90
IS THIS A REQUEST KEY MAKE?
NO, GO RESET BREAK PENDING FLAG
YES, SET KEYS BREAK PENDING FLAG
SET AL TO SYSTEM REQUEST MAKE
GO WRITE TO PORT 60
BREAK KEY - RESET BRK PEND FLAG
SET AL TO SYSTEM REQUEST BREAK
GO WRITE TO PORT 60
IF HERE, MUST BE FN
+
CURSOR KEY, OR FN
+
Fl, F2
0432
0432 8A C3
0434 80 FB 57
0437 73 15
XL T36:
MOV
CMP
JAE
AL,BL
BL,P60_FlLSC
XLT38
, AL
<===
PC1 EXTENDED SC FROM TBL
; FN + Fl, F2?
; YES, JUMP
FUNCTION
+
CURSOR KEYS - HOME, PGUP, END, PGDN
0439 F6 C4 80
043C 74 09
043E 31 OE 00B7 R
0442 OC 80
0444 E9 04FB R
0447
0447 09 OE 00B7 R
044B E9 04FB R
TEST
JZ
XOR
OR
JMP
XL T37:
OR
JMP
AH,BREAILBIT
XLT37
B_PEND2,CX
AL,BREAILBIT
XLT80
B_PEND2,CX
XLT80
FUNCTI ON
+
Fl ( F11) P60-SC:
FUNCTION
+
F2 (Fl2)
044E
044E F6 C4 80
0451 74 09
0453 OA C4
0455 31 OE 00B7 R
0459 E9 050C R
045C
045C 09 OE 00B7
0460 E9 050C R
XLT38:
TEST
JZ
OR
XOR
JMP
XL T38_1:
OR
JMP
AH, BREAILBIT
XL T38_1
AL,AH
B_PEND2,CX
XLT90
B_PEND2,CX
XLT90
CURSOR KEY BREAK ?
NO, GO SET BREAK PENDING FLAG
BREAK KEY - RESET BREAK PEND FLAG
SET BREAK IN PC1 SCAN CODE
GO RESET PORT 60 KEYPAD STATE
SET KEYS BREAK PENDING FLAG
GO RESET PORT 60 KEYPAD STATE
Fll MAKE
=
57H Fll BREAK
=
D7H
Fl2 MAKE
=
58H Fl2 BREAK
=
D8H
MAKE KEY?
YES, JUMP
CHANGE TO BREAK SC
BREAK KEY - RESET BREAK PEND FLAG
WRITE TO P60
MAKE KEY - SET BREAK PEND FLAG
WRITE TO P60
ROM BIOS 2-41