IBM PC CONVERTIBLE

ENABLE DISKETTE NMI'S
OAC7 E4 77
IN AL, DSKLCNTL
OAC9 OC 80
OR AL,DSKLNMI
; ENABLE DISKETTE POWER ON NMI
OACB E6 77
OUT
DSKLCNTL,AL
SET REAL TIME CLOCK ALARM FLAG
I F POWERED ON BY ALARM
OACD B4 21 MOV
AH,RTCSYS_STAT
GET SYSTEM STATUS
OACF E8 0747
CALL GELRTCNMI
OAD2
8A F8
MOV BH,AL
BH <-- SYS_STATUS
OAD4 58 POP
AX
RETRI EVE RTC MODE
OAD5 F6 C7 10
TEST BH, PON-ALRM
POWERED ON BY ALARM?
OAD8 74 07
JZ
RES_Oll
DADA 80 OE OOAO
R 02 OR
RTCWAILFLAG,ALARM_PEND ; SET ALARM PENDING
OADF 24 DF
AND AL, NOT A IE_ENABLE
TURN OFF ALARM I F POWERED
ON BY IT
OAEl RES_Oll :
RESTORE REAL T Ii·iE CLOCK I NTERRUPT MODE
OAEl B4 OB
MOV AH, RTC.MODE
OAE3 E8 0750 R
CALL PULRTCNMI
ENABLE PRINTER PORTS
OAE6 BA 027A MOV
DX,27AH
START WITH SECONDARY
OAE9 BO DC MOV
AL ,OCH
OAEB EE OUT
DX,AL
OAEC 80 C6 01 ADD
DH,l
OAEF
EE OUT DX,AL
DO PRIMARY
OAFO BA 03BE
MOV DX,03BEH
OAF3
EE OUT DX,AL
DO MONO PRINTER PORT
ENABLE SYSTEM SUSPEND NMI
OAF4 E4 7F
IN AL,PWILSTAT
OAF6 OC 04
OR
AL, EN_SUS_NMI
ENABLE SUSPEND NMI
OAF8 24 F7
AND AL, NOT HDWR_RESET
RESET FLAG
OAFA E6 7F
OUT PWR_STAT ,AL
ISSUE RESUME VECTOR CALL
OAFC RES_012 :
OAFC E8 0000 E
CALL ENABLE_NMI
ENABLE NMI' S
ISSUE RESUME VECTOR CALL
OAFF CD 6C
INT
6CH ALLOW OP /SYS TO CORRECT
REAL TIME INFORMATION
OB01 E9 0050 R
JMP NMIH_EXIT
EX IT TO USERS PROGRAM
OB04
RESUME
ENDP
SUBTTL
ASYNC SAVE/RESTORE
2-60 ROM BIOS