IBM PC CONVERTIBLE

0023 F6 C3 40
TEST
BL,IOCHICNMI
CHANN EL CH ECK?
0026
74 03 JZ
NMLOO
0028
E9 0536 R JMP CHAN_CHK
PROCESS CHANNEL CHECK
002B
NMLOO:
002B F6 C3 08
TEST BL, SYS_SUSP _NMI
SYSTEM SUSPEND?
002E 74 03
JZ NMLOI
0030
E9 0797 R
JMP SUSPEND
RUN SYSTEM SUSPEND ROUTINE
0033
NMLOI
:
0033 F6 C3 80
TEST
BL,DSKLNMI
0036 75 37
JNZ DSKT _RESYNC
PROCESS DISKETTE NMI
0038 F6 C3 01
TEST BL,KBDATILNMI
KEYBOARD DATA READY?
003B 74 03
JZ NML02
003D E9 025F R
JMP
KYBD_PREP
GO TO PROCESS DATA
0040
NML02:
0040 F6 C3 10
TEST BL, KBCLR_NMI
KEYBOARD CLEAR?
0043 74 03
JZ NML03
0045
E9 02F6 R
JMP
KYBD_CLR
PROCESS KEYBOARD CLEAR
0048
NML03
:
0048 F6 C3 04
TEST
BL, RTCJILRfLNMI
004B 74 03
JZ NMIH_EXIT
EXIT I F NOT ALARM
004D E9 0551
JMP RTCALARM_NMi
OTHERWISE MUST BE ALARM
KYBD_PREP, KYBD_CLR
, DSKLRESYNC, RTCALARM_NMI ROUTINES RETURN HERE
0050 NMIH_EXIT:
0050 FA
CLI
0051 BO 07
MOV AL, DI SABLLSLEEP+CLOCICRUN
DISABLE NMIS
0053 E6 72
OUT CLOCICCTL ,AL
0055 E4 61 IN
AL,NMLCNTL
0057 24 F7 AND
AL,NOT OIS...ALARM RE-ENABLE ALARM NMI
0059
E6 61 OUT NMLCNTL ,AL
005B E4 62
IN AL,NMLSRC
READ NMI SOURCE FLAGS
005D 24 DF
AND AL,NOT TlMERLSN
SAVE ALL BUT TIMER SENSE
005F 75 AC
JNZ NMLREDRIVE
0061 NMIH_OUT:
0061 IF
POP
DS
RESTORE REGISTERS
0062 07
POP ES
0063
5F POP
DI
0064
5E POP
SI
0065
5D POP BP
0066
5A POP DX
0067
59 POP CX
0068
5B
POP
BX
0069 BO 27 MOV
AL, DI SABLE_SLEEP+CLOCICRUN+GLOBAL_NMI ENABLE NMIS
006B E6 72 OUT
CLOCICCTL,AL
006D
58 POP AX
006E CF IRET
006F
NMLFLIH ENDP
INCLUDE DSKTNMI.INC
SUBTTL DISKETTE RESYNC DRIVER
EXTRN NECOUTPUT: NEAR
EXTRN RESUL TS: NEAR
EXTRN DISICRESET:NEAR
EXTRN GELPARM: NEAR
EXTRN GELVECTOR@:NEAR
2-28 ROM BIOS