IBM PC CONVERTIBLE Technical Reference page 201

0125
9C SPROF _MODI FY: PUSHF
0126 E8 0000 CALL DISABLE_NMI
DISABLE INTERRUPTS
0129 B4 17
MOV AH,RTCSYS_PROFI
SELECT HIGH PROFILE BYTE
012B 8A C7
MOV
AL, BH
0120 E8 0000 CALL
PULRTCREG
0130 FE C4
INC AH
0132 8A C3 MOV
AL, BL
0134
E8 0000 CALL
PULRTCREG
0137 53
PUSH BX
; SAVE REGISTERS
0138
52 PUSH OX
CONVERT UNITS FROM MINUTES TO SECONDS FOR LCD INACTIVITY
0139 SPROF _MOl:
0139 8A C5
MOV AL,CH GET TIMEOUT IN MINUTES
013B 2A E4
SUB AH,AH
0130 B3 3C
MOV BL,60 MULTIPLY TO GET SECONDS
013F F6 E3
MUL BL
0141 8B 08
MOV BX,AX
0143 B4 19
MOV
AH, RTCLCD_I NACT
GET INACT VALUE ADDRESS
0145 E8 0000
CALL PULRTCREG
0148 FE C4
INC AH INCREMENT ADDRESS
014A 8A C7 MOV
AL, BH WRITE HIGH VALUE
014C
E8 0000 CALL
PULRTCREG
CONVERT UNITS FROM MINUTES TO SECONDS FOR SYSTEM OFF INACTIVITY
014F 8A CI
MOV AL, CL GET TIMEOUT IN MINUTES
0151 2A E4
SUB AH,AH
0153 B3 3C MOV BL,60
MUL TIPL Y TO GET SECONDS
0155 F6 E3
MUL BL
0157
8B 08 MOV BX,AX
0159 84 IB MOV AH, RTCSYS_I NACT
GET INACT VALUE ADDRESS
0158 E8 0000 CALL PUT_RTCREG
015E FE C4 INC AH
INCREMENT ADDRESS
0160 8A C7 MOV
AL, BH WRITE HIGH VALUE
0162
E8 0000 CALL PUT_RTCREG
0165
E8 0000 CALL
BALSALSETUP SETUP FOR BATTERY SAVE
0168 E8 0000 CALL ENABLE_NMI
016B 5A POP
OX RESTORE REGISTERS
016C
5B POP BX
0160
90 POPF
RESTORE INTERRUPTS
SET MODEM AND RS-232 POWER STATE IF ON BAT PWR ACCORDING TO PROFILE
I F ON EXTERNAL POWER THEN FORCE MODEM AND RS-232 ON
016E E4 7F
IN
AL,PWILSTAT ; GET POWER STATUS
0170 AS 40 TEST AL, EXLPWR
; ON EXTERNAL POWER?
0172
74 03 JZ
EXECPROF NO, GO ACCORDING TO PROF
0174 80 CF 03 OR
BH ,03
YES, SELECT FORCE TO POWER
0177
52 EXECPROF : PUSH OX SAVE REGISTER
0178 8B 03 MOV OX, BX
SAVE & SET UP SYS PROF TEST
017A 2A FF
SUB BH, BH SET DEFAULT TO POWER OFF
017C F6 C6 02
TEST DH,MODEM_BATT
PROF MODEM BAT POWER ACTIVE?
017F 74 03 JZ SETJoIOD
NO, EXECUTE MODEM POWER OFF
0181 80 CF 01 OR
BH ,01 YES, ACTIVATE MODEM BAT PWR
0184
SELMOD:
0184
B3 02 MOV
BL ,ACTJoIODEM SELECT MODEM
0186 E8 0000
CALL
COM_POWER
SET CORRESPONDING PWR STATE
IN DEVICE SPECIFIED BY BL
0189 2A FF
SUB BH, BH SET DEFAULT TO POWER OFF
018B
F6 C6 01 TEST DH, RS232_BATT
PROF RS-232 BATT PWR ACTIVE?
018E 74 03 JZ SELRSP
NO, EXECUTE RS-232 POWER OFF
0190 80 CF 01
OR BH ,01 YES, ACTIVATE RS-232 BAT PWR
0193 SELRSP:
0193 B3 04
MOV BL ,ACLRS232 SET DEFAULT
0195 B4 IF MOV
AH,RTCFEALCON SELECT FEATURE CONFIG
0197 E8 0000 E
CALL GELRTCREG GET FEATURE CON FIG
019A A8 10 TEST
AL,PRLINST IS RS-232 PRIMARY COM PORT?
019C 74 03
JZ SELRS232 NO, ITS NOT PRIMARY
019E 80 CB 01 OR
BL,SELRS23LPRIM
; YES, SELECT RS-232 PRIMARY
01AI E8 0000 E SELRS232 : CALL COM_POWER ; SET POWER STATE
2-176 ROM BIOS