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C o m p a c t B o a r d
out
mov
mov
out
mov
mov
out
call
ret
Ct_I2CWriteByte
; Wait until the busy bit clears, indicating that the SMBUS
; activity has concluded.
CT_Chk_SMBus_Ready
mov
clc
mov
Chk_I2c_OK:
in
call
Appendix E Digital I/O F-8
dx, al
dx, 0f040h + 05h
al, ah
dx, al
dx, 0f040h + 00h ; Host Control Register
al, 48h
; Start a byte access
dx, al
CT_Chk_SMBus_Ready
Endp
Proc Near
dx,0f040h+ 0;status port
cx,0800h
al,dx
;get status
Delay5ms
P C M - Q M 7 7
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