SBC84833 Series All-In-One Capa Board User’s Manual
Digital I/O
74
in
dx, al
;Bit0 ~ Bit2 are DIO0~2 state. (1 High, 0 Low,
Note2
)
Digital Output
; Set DIO digital output pins’ value.
mov
dx,2Eh
mov
al,0E1h
out
dx,al
mov
dx,2Fh
mov
al,
M
;If
N
’s value is 07h, Bit3 ~ Bit7 represent DIO3 ~ DIO7,
out
dx,al
;Set output value M
;Bit 3 ~ Bit 7 are DIO Pin 3~7 state. (1 High , 0 Low)
;When M is FF, all DIO pins are high.(
Note3
)
Note1
:
The N has 8bits. Every bit’s value is either “1” or “0”.
" 1" means that the bit is programmed to input.
" 0" means that the bit is programmed to output.
Ex:
1. N=00h=00000000b
DIO7 DIO6 DIO5 DIO4 DIO3 DIO2 DIO1 DIO0
Output Output Output
Output
Output
Output
Output
Output
2. N=02h=000000
1
0b.
DIO7 DIO6 DIO5 DIO4 DIO3 DIO2 DIO1 DIO0
Output Output Output
Output
Output
Output
Input
Output
3. N=07h=00000
111
b.
DIO7 DIO6 DIO5 DIO4 DIO3 DIO2 DIO1 DIO0
Output Output Output
Output
Output
Input
Input
Input
4. N=F2h=11110010b.
DIO7 DIO6 DIO5 DIO4 DIO3 DIO2 DIO1 DIO0
Input Input Input Input
Output
Output
Input
Output
Note2
:
IF N=07h.
DIO7 DIO6 DIO5 DIO4 DIO3 DIO2 DIO1 DIO0
Output Output Output
Output
Output
Input Intput
Intput
Summary of Contents for SBC84833 Series
Page 1: ...SBC84833 Series Intel Atom Processor N270 Capa Board with LVDS User s Manual...
Page 6: ......
Page 12: ...SBC84833 Series All In One Capa Board User s Manual JUMPERS AND CONNECTORS 6 Solder Side...
Page 14: ...SBC84833 Series All In One Capa Board User s Manual JUMPERS AND CONNECTORS 8 Solder Side...
Page 41: ...SBC84833 Series All In One Capa Board User s Manual JUMPERS AND CONNECTORS 35...
Page 44: ...SBC84833 Series All In One Capa Board User s Manual HARDWARE DESCRIPTION 38...
