Gpio Sample Code - MSI MS-98D1 Manual

GPIO Sample Code


GPI 0 ~ GPI 3
GPI 0
IO Address 50Ch
SIO GPIO Register
Bit 2
Sample code #1

GPO 0 ~ GPO 3
GPO 0
IO Address
SIO GPIO Register F1h
Bit 4
Sample code #2
SIO_INDEX_Port
SIO_DATA_Port
SIO_UnLock_Value
SIO_Lock_Value
SIO_LDN_GPIO
GPO_REG
GPO_0
Sample Code:
#1 : Get GPI 0 status
; Get GPI 0/1/2/3 Pin Status Register
mov dx, 50Ch
in eax, dx
;eax bit2 = GPI 0 status
;eax bit3 = GPI 1 status
;eax bit4 = GPI 2 status
;eax bit5 = GPI 3 status
#2 : Set GPO 0 to high
; Enable config mode
mov dx, SIO_INDEX_Port
mov al, SIO_UnLock_Value
out dx, al
jmp short $+2
jmp short $+2
out dx, al
; Switch GPIO Configuration for SIO LDN 0x06
GPI 1 GPI 2 GPI 3
50Ch 50Ch 50Ch
3 4 5
GPO 1 GPO 2 GPO 3
F1h F1h F1h
1 2 3
equ 04Eh
equ 04Fh
equ 087h
equ 0AAh
equ 06h
equ 0F1h
equ 00010000b
;Io_delay
;Io_delay
MS-98D1 MS-98D1
A-3