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C o m p a c t B o a r d
out
call
test
jnz
and
or
jz
test
jnz
loop
;SMbus error due to timeout
SMBus_Err:
stc
ret
Clear_final:
clc
ret
CT_Chk_SMBus_Ready
END begin
dx,al
;clear status
Delay5ms
al, 02H
short Clear_final
al, NOT 40H ;mask INUSE bit
al,al
;status OK ?
short Clear_final
al,04h
;device error
short SMBus_Err
short Chk_I2c_OK
Endp
P C M - Q M 7 7
;termination of command ?
Appendix E Digital I/O F-9
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