IBM PC CONVERTIBLE

0132 E9 0018 R JMP
TOD_NRET ; IiML RTN AFTER SETTING DATE
,
;-------S
E T R T C
A L A R M------- FUNCTION 06H ----------------
0135 RTC6:
0135
E8 01A9 R CALL
SELALRM SET ALARM REGISTERS
0138
3D 0000 CMP
AX,O GOOD RELCODE RETURNED?
013B 75 03 JNE RTC6A
.•. YES, CONTINUE.
0130 E9 0026 R JMP
TOD_ERET ... NO, ERROR RET.
0140
RTC6A:
0140
E9 0018 R
JMP
TOD_NRET
NtoIL RTRN AFTER SETTING ALARM
; -------R ESE T R T C
A L A R M--- FUNCTION 07H ----------------
0143
RTC_7:
0143
B4 OB MOV
AH,RTCMODE ADDRESS AND
0145 E8 0000 CALL
GELRTCNMI GET RTCMODE (Reg8)
0148 24 OF AND
AL,NOT AIE_ENA8LE RESET ALARM INT ENA8LE
014A
E8 0000 CALL
PULRTCNMI ADDR & PUT RTCMODE (RegB)
0140
80 26 OOAO R
F8
AND
RTCWAILFLAG,NOT PON~LRM_PEND ; RST PWR BY ALARM
0152
E9 0018 R
JMP
TOD_NRET NML RTRN RESETTING ALARM
;-------CHECK FOR
FUNCTION REQUESTS 7, 8,
AND 9----------------------
0155 RTCCHK3 :
0155
FE CC DEC AH
IF PARAMETER AH=7
0157 74 EA
JZ
RTC7 THEN RESET ALARM
0159 FE CC
DEC
AH
I F PARAMETER AH=8
0158 74 03
JZ
RTC8 THEN SET RTC ALARM POWER-ON
0150 EB 14 90
JMP RTC9
PARAM AH=9, GET ALARM TIME &
STATUS
;-------S
E T R T C A L ARM FOR POW E R
o N-----------
FUNCTION 08H
0160 RTC8:
0160 E8 01A9 R CALL SET~LRM ; SET ALARM REGISTERS
0163 3D 0000 CMP AX,O ; GOOD RELCODE RETURNED?
0166 75 03 JNE
RTC8A
; ... YES, CONTINUE.
0168 E9 0026 R JMP
TOD_ERET
; .•. NO, ERROR RET.
016B 80 OE OOAO R 04 RTC8A: OR RTCWAI T _FLAG, PON~LRtLPEND
; SET PWR ON BY ALARM PENDING
0170 E9 0018 R JMP
TOD_NRET
; NML RTRN AFTER SETTING ALARM
;-------G E T
R T
C A L ARM AND
S TAT U S---------------
FUNCTI ON 09H
0173 RTC9:
0173
E8 01FE R CALL
UPD_IN_PR
CLOCK OPERATING?
0176 73 03 JNC RTC9A YES, GO AROUND
0178 E9 0026 R JMP
TOD_ERET
NO, ERROR RETURN
017B RTC9A:
017B
B4 01 MOV AH,RTC~SEC ADDRESS AND
0170 E8 0000 CALL GELRTCNMI GET RTC~SEC (Reg1)
0180 8A FO MOV DH,AL DH RETURNS ASEC DATA
0182 84 03
MOV
AH,RTC~MIN ADDRESS AND
0184 E8 0000 CALL GELRTCNMI GET RTC~MIN (Reg3)
0187 8A C8 MOV CL,AL CL RETURNS AMIN DATA
0189 84 05 MOV AH,RTC~HRS ADDRESS AND
0188 E8 0000 CALL GELRTCNMI GET RTC~HRS (Reg5)
018E 8A E8 MOV CH,AL CH RETURNS AHRS DATA
0190 2A 02
SUB
DL,DL SET DL TO ZERO
0192 84 OB MOV AH,RTCMODE ADDRESS AND
0194 E8 0000 CALL GELRTCNMI
GET RTCMODE (Reg8)
0197 A8 20 TEST AL,AIE_ENA8LE
RTC ALARM DISABLED (AIE=O)?
0199
74 08 JZ EXIT9
YES, RETURN DL=O
0198 FE C2 INC DL ; DL=l
0190 F6 06 OOAO R 04 TEST
RTCWAI T _FLAG, PON~LRtLPEND
ROM BIOS 2-159