Advantech PCM-9588 User Manual page 97

; AL - Value to write
;Output: none
;==============================================================
Ct_I2CWriteByteProcNear
push ax
push cx
mov dx,SMBus_Port +04h
mov al,ch
out dx,al
call Delay5ms
call Delay5ms
call CT_Chk_SMBus_Ready
pop ax
mov dl,03h
out dx,al
call Delay5ms
call Delay5ms
pop ax
mov dl,05
out dx,al
call Delay5ms
call Delay5ms
mov dl,02h
mov al,48h
out dx,al
call Delay5ms
call Delay5ms
mov cx, 100h
@@:
newiodelay
loop short @B
call CT_Chk_SMBus_Ready
ret
Ct_I2CWriteByteEndp
CT_Chk_SMBus_ReadyProcNear
mov dx,SMBus_Port + 0;status port
;ID cmd(Write)
;Index
;Data0
;write data
87 PCM-9588 User Manual