IBM PC CONVERTIBLE Technical Reference page 240

09D7 A8 02 TEST AL,MODEM_BATT ; OPERATE MODEM ON BATTERY?
09D9 75 OA JNZ
SYS_SET2 ; YES THEN JUMP
ON BATTERY POWER AND MODEM PROFILE INDICATES NO BATTERY OPERATION
09DB B3 02 MOV BL,ACLMODEM SPECI FY MODEM OFF
09DD 2A FF SUB BH,BH INDICATE POWER OFF REQUEST
09DF E8 0000 E CALL COM-POWER TURN OFF PRIMARY COM POWER
09E2 EB 09 90 JMP SYS_SET3
MODEM POWER LEFT ON SO SET MODEM ACCORDING TO CONFIGURATION
09E5
SYS_SET2 :
09E5 B4 1D MOV AH, RTCMOD_PROFl RETRIEVE MODEM PROFILE
09E7 E8 07AA R CALL
GELRTCREG GET PROFILE IN AL REGISTER
09EA E8 0000 E CALL MODEM_CONFIG GO SETUP MODEM
ENABLE DISKETTE NMIS
09ED
SYS_SET3 :
09ED E4 77 IN AL,DSKLCNTL READ FROM DISKETTE PORT
09EF
OC 80
OR AL,DSKLNMI SET ON DISKETTE NMI ENABLE
09F1 E6 77 OUT DSKLCNTL , AL OUT IT
ENABLE KEYBOARD NMIS
09F3 E4 7C IN
AL,KYBD_CNTL
09F5 OC 80 OR AL, EN-KYBD_NMI ; ENABLE KEYBOARD NMI' S
09F7 E6 7C OUT KYBD_CNTL,AL
ENABLE SPEAKER, RTC ALARM NMI, AND I/O CHECK NMI
09F9 E4 61 IN AL,NMLCNTL ; ENABLE RTC INTERRUPT
09FB 24 D7 AND
AL , NOT 0 I S_ALARM+D I S_IOCHK
09FD OC 04 OR
AL, EN_SPKR
; ENABLE SPEAKER
09FF E6 61 OUT NMLCNTL,AL
ENABLE I/O CHANNEL CHECK
OA01 BO 80
MOV
AL, EN_IOCHK
OA03 E6 AO OUT IONMLCNTL,AL
ENABLE KEYBOARD, TIMER 0 AND DISKETTE INTERRUPTS
OAOS E4 21 IN AL,INTA01
OA07 24 BC
AND AL ,OBCH
ENABLE KEYBOARD AND TIMER
OA09 E6 21 OUT INTA01,AL AND DISKETTE INTERRUPTS
OAOB C3
RET
OAOC SYS_SETUP ENDP
Vector Setup (VECTOR_SETUP)
SUBTTL VECTOR_SETUP
*********************************************************************
ROUTINE-NAME: VECTOILSETUP
FUNCTION: THIS ROUTINE INITIALIZES INTERRUPT VECTORS 0-32 AND THE
PRINTER AND RS232 TIMEOUT VALUES. VIDEO VECTORS lOH,lDH,lFH,44H
ARE NOT INITIALIZED BY THIS ROUTINE. THEY ARE INITIALIZED IN
THE LCD_CONFIG ROUTINE DURING POST.
ENTRY CONDITIONS:
INPUT CONDITIONS: DS:DATA
RESTRICTIONS: NMI' S MUST BE DISABLED
EX IT CONDITIONS:
NORMAL EXIT CONDITIONS: INTERRUPT VECTORS AND TIMEOUTS SET
ROM BIOS 2-215