3304030 User’s Manual
MOV DX,2Fh
MOV
AL,08H
OUT DX,AL
; select logical device 8
;
MOV DX,2Eh
MOV
AL,0F5H
OUT DX,AL
MOV DX,2Fh
IN
AL,DX ;
OR
AL,08h ; SELECT MINUTE
MOV
A H,AL
MOV DX,2Eh
MOV
AL,0F5h
OUT DX,AL
MOV DX,2Fh
MOV
AL,A H
OUT DX,AL
MOV DX,2Eh ; SE TTING 5 MINUTES
MOV AL,0F6h ; ( LD8-CRF6-P05h
)
OUT DX,AL
MOV DX,2Fh
MOV
AL,05h
OUT DX,AL
Step 3 . E xit extended function mode
MOV DX,2Eh
MOV
AL,0AAH
OUT DX,AL
REMARK :
**** I/O PORT 2Eh --> Index port for programming CR .
2Fh --> Data port for programming CR .
**** LD8-CRF6-P05h :
Program CR i ndex F6h of Logical Device 8
with the value "05h" .
52
Watchdog Timer Programming Guide
Summary of Contents for 3304030
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