MSI MS-9A59, Manual, Page: 63 / 64

A-3
MS-9A59
GPIO Sample Code

GPI 0 ~ GPI 7
GPI 0 GPI 1 GPI 2 GPI 3 GPI 4 GPI 5 GPI 6 GPI 7
IO Address
SIO GPIO Register A2h A2h A2h A2h A2h A2h A2h A2h
Bit 0 1 2 3 4 5 6 7
Sample code #1

GPO 0 ~ GPO 7
GPO 0 GPO 1 GPO 2 GPO 3 GPO 4 GPO 5 GPO 6 GPO 7
IO Address
SIO GPIO Register 89h 89h 89h 89h 89h 89h 89h 89h
Bit 0 1 2 3 4 5 6 7
Sample code #2
SIO_INDEX_Port equ 04Eh
SIO_DATA_Port equ 04Fh
SIO_UnLock_Value equ 087h
SIO_Lock_Value equ 0AAh
SIO_LDN_GPIO equ 06h
SIO_GPIO_Data equ 089h
SIO_GPIO_Status equ 0A2h
GPI_0 equ 00000001b
GPO_0 equ 00000001b
Sample Code:
#1 : Get GPI 0 status
; Enable config mode
mov dx, SIO_INDEX_Port
mov al, SIO_UnLock_Value
out dx, al
jmp short $+2 ;Io_delay
jmp short $+2 ;Io_delay
out dx, al
; Switch GPIO Configuration for SIO LDN 0x06
mov dx, SIO_INDEX_Port
mov al, 07h
out dx, al
mov dx, SIO_DATA_Port
mov al, SIO_LDN_GPIO
out dx, al
; Get GPI 0 Pin Status Register