DSM 96M4371o, User Manual

Page: 40 / 90

System Installation
96M4371o
User’s Manual
3-22
and al, 0F9h ; set low to gpio11 & GPIO12
out dx, al
add bx, 02h
mov ax, bx
mov dx, ax ; go to gpio3 address
in al, dx
and al, 0FCh
; set high to input
out dx, al
in al, dx ; read the gpio output
or al, 30h
cmp al, 30h
jnz
L5
mov dx, ADDRESS
mov al, 0C8h
out dx, al
; set GPIO11 & GPIO12 input(0)
inc dx
in al, dx
and
al, 0F9h
out dx, al
mov dx, ADDRESS
mov al, 0CAh
out dx, al
; set GPIO30 & 31 input (0)
inc dx
in al, dx
and
al, 0FCh
or al, 0CCh ; set GPIO32 33 36 37 output (1)
out dx, al
mov ax, bx
mov dx, ax
in al, dx
or al, 0CCh
; set high to input
out dx, al
in al, dx ; read the gpio output
or al, 30h
cmp al, 0FFh
jnz
L5
sub bx, 02h