Iei-integration WAFER-945GSE v2.01 Manual de usuario descargar pdf (Pagina 174)

WAFER-945GSE 3.5" Motherboard

Page 159

D.1 Introduction

The DIO connector on the WAFER-945GSE is interfaced to GPIO ports on the Super I/O

chipset. The DIO has both 4-bit digital inputs and 4-bit digital outputs. The digital inputs

and digital outputs are generally control signals that control the on/off circuit of external

devices or TTL devices. Data can be read or written to the selected address to enable the

DIO functions.

NOTE:

For further information, please refer to the datasheet for the Super I/O

chipset.

D.2 DIO Connector Pinouts

Pin Description Super I/O Pin Super I/O Pin Description

1 Ground N/A N/A

2 VCC N/A N/A

3 Output 3 GP23 General Purpose I/O Port 2 Bit 3

4 Output 2 GP22 General Purpose I/O Port 2 Bit 2

5 Output 1 GP21 General Purpose I/O Port 2 Bit 1

6 Output 0 GP20 General Purpose I/O Port 2 Bit 0

7 Input 3 GP33 General Purpose I/O 33

8 Input 2 GP32 General Purpose I/O 32

9 Input 1 GP31 General Purpose I/O 31

10 Input 0 GP30 General Purpose I/O 30

D.3 Assembly Language Samples

D.3.1 Enable the DIO Input Function

The BIOS interrupt call INT 15H controls the digital I/O. An assembly program to enable

digital I/O input functions is listed below.

MOV AX, 6F08H

Sets the digital port as input

1 2 ... 169 170 171 172 173 174 175 176 177 178 179 180 181 182

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Iei-integration WAFER-945GSE v2.01 Manual de usuario Pagina 174