IBM PC CONVERTIBLE

09FB BF 0110 MOV
DI,44H*4
RESTORE VECTOR 44H
09FE A5 MOVSW
09FF
A5 MOVSW
RESTORE DATA AREA FROM 0300-3FFH
WARNING:
CANNOT DO ANY STACK OPERATIONS FROM NOW UNTIL
SS AND SP RESTORED
OAOO BF 0300
MOV DI,0300H
SET DESTINATION
OA03 B9 0080 MOV
CX,128
128 WORDS
OA06 F3/ A5
REP MOVSW
OA08 83 C7 12
ADD DI,18
SKIP FROM 400H-410H
OAOB 83 C6 10
ADD SI,16
SOURCE ADDRESSES OLD EQUIP -FLAG
OAOE
AD LODSW
AX=PRE SUSPEND EQUIP_FLAG
OAOF
8B E8 MOV
BP ,AX SAVE OLD EQUIP_FLAG
RESTORE DATA AREA
FROM 0412-053A
OAll B9 0095
MOV CX,149
RESTORE 149 WORDS
OA14
F3/ A5
REP MOVSW
CLEAR KEYBOARD BREAK PENDING
FLAGS
OA16 8C DB
MOV BX,DS SAVE RESTORE SEGMENT
OA18
B8 ----
MOV AX,DATA
OA1B 8E D8
MOV DS,AX RESTORE DATA SEGMENT
OA1D
2B CO
SUB AX,AX
OAIF
A3 00B5 MOV B_PEND1,AX
OA22 A3 00B7 R MOV B_PEND2,AX
OA25 A2 0018 R MOV
KB-FLA~l,AL CLEAR KEY DEPRESSED BITS
OA28 A3 0072 R MOV
RESELFLAG,AX CLEAR RESET FLAG
OA2B A2 OOBA R
MOV LASLCLICLKEY,AL
CLEAR KEY CLICK TRACKING
OA2E A2 0015 R
MOV BALSTATUS,AL
CLEAR BATTERY STATUS FLAG
OA31 A2 00B9 R
MOV
P60_HOLD_BYTE ,AL
CLEAR PORT 60 HOLDING REG
CLEAR BIOS STATUS FLAGS , CAUSE TIMEOUT COUNTERS TO BE RELOADED AND
A CHECK FOR DISKETTE CHANGE TO BE PERFORMED
OA34
80 26 0016 R 04 AND
BIOS_STATUS,DCL_SUPPORTED ; SAVE DCL SUPPORT FLAG
OA39 80 OE 0016 R 22
OR BIOS_STATUS, KYBD-ACTI VE+FORCE_DCL
OA3E 8B C5 MOV
AX,BP
; GET OLD EQUIPMENT INFO
OMO 80 26 0010 R CF
AND BYTE PTR EQUIP-FLAG,NOT INILDISP
; CLR NEW VIDEO FLAGS
OM5 24 30
AND AL,INILDISP
; ONLY SAVE OLD VIDEO FLAGS
OM7
08 06 0010 R
OR BYTE PTR EQUIP_FLAG,AL ; MOV OLD VIDEO FLAGS TO
EQUI P
OMB 8B OE 0010 R
MOV CX, EQUIP -FLAG
; CX <-- EQUIPMENT WORD
RESTORE APPLICATION PROGRAMS STACK POINTER
OMF 8E DB
MOV DS, BX
RESTORE SAVE AREA SEGMENT
OA51 8B FE
MOV DI,SI
SAVE CURRENT PLACE
OA53 BE 0000
MOV SI,O
OA56 AD
LODSW
GET SS VALUE
OA57
8B D8 MOV
BX,AX
SAVE IN BX
OA59 AD
LODSW
GET SP VALUE
OA5A
8E 03 MOV
SS, BX RESTORE APPLICATION STACK
OA5C 8B EO
MOV SP ,AX
OA5E AC
LODSB
GET RTC MODE
OA5F 50 PUSH
AX
SAVE ON STACK
OA60 AD
LODSW
GET LCD AND VIDEO CONTROL
OA61 50
PUSH AX
SAVE ON STACK
OA62
8B F7
MOV SI,DI RESTORE POINTER
RESTORE
EQUIP WORD IN RTC RAM FROM SAVED WORD IN REGISTER CX
OA64 B4 13
MOV AH, RTCEQU I P _LO
SAVE IN RTC EQUIPMENT AREA
OA66 8A CI
MOV AL,CL
OA68 E8 0750 R
CALL PULRTCNMI
SAVE EQUIPMENT INFO IN RTC
OA6B FE C4
INC AH
OA6D 8A C5 MOV
AL,CH
OA6F
E8 0750 R
CALL PULRTCNMI
RELOAD KEYBOARD NMI CONTROL STATE
2-58 ROM BIOS