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IMBA-30104 ATX Motherboard
Page 150
C.1 Introduction
The digital I/O connector supports 4-bit output and 4-bit input. The signals are used for
controlling external machines or devices. Data can be read from or written to the digital I/O
port.
C.2 DIO Connector Pinouts
The following table describes how the DIO connector pins are connected to the Super I/O
GPIO port 1.
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
GP27
General purpose I/O port 2 bit 7.
4
Output 2
GP26
General purpose I/O port 2 bit 6.
5
Output 1
GP25
General purpose I/O port 2 bit 5.
6
Output 0
GP24
General purpose I/O port 2 bit 4.
7
Input 3
GP23
General purpose I/O port 2 bit 3.
8
Input 2
GP22
General purpose I/O port 2 bit 2
9
Input 1
GP21
General purpose I/O port 2 bit 1
10
Input 0
GP20
General purpose I/O port 2 bit 0
C.3 Assembly Language Samples
C.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
INT 15H
Initiates the INT 15H BIOS call
C.3.2 Enable the DIO Output Function
The BIOS interrupt call INT 15H controls the digital I/O. An assembly program to enable
digital I/O output functions is listed below.
Содержание imba-30104
Страница 13: ...IMBA 30104 ATX Motherboard Page xiii Table 4 2 Clear CMOS Jumper Settings 58 Table 5 1 BIOS Navigation Keys 75 ...
Страница 15: ...IMBA 30104 ATX Motherboard Page 1 Chapter 1 1 Introduction ...
Страница 19: ...IMBA 30104 ATX Motherboard Page 5 Figure 1 3 IMBA 30104 Dimensions mm ...
Страница 23: ...IMBA 30104 ATX Motherboard Page 9 Chapter 2 2 Unpacking ...
Страница 27: ...IMBA 30104 ATX Motherboard Page 13 Chapter 3 3 Pinouts ...
Страница 60: ...IMBA 30104 ATX Motherboard Page 46 Chapter 4 4 Installation ...
Страница 87: ...IMBA 30104 ATX Motherboard Page 73 Chapter 5 5 BIOS Setup ...
Страница 92: ...IMBA 30104 ATX Motherboard Page 78 BIOS Menu 2 Advanced ...
Страница 136: ...IMBA 30104 ATX Motherboard Page 122 Chapter 6 6 Driver Installation ...
Страница 155: ...IMBA 30104 ATX Motherboard Page 141 Appendix A A BIOS Options ...
Страница 159: ...IMBA 30104 ATX Motherboard Page 145 Appendix B B Terminology ...
Страница 163: ...IMBA 30104 ATX Motherboard Page 149 Appendix C C Digital I O Interface ...
Страница 166: ...IMBA 30104 ATX Motherboard Page 152 Appendix D D Watchdog Timer ...
Страница 169: ...IMBA 30104 ATX Motherboard Page 155 Appendix E E Address Mapping ...
Страница 170: ...IMBA 30104 ATX Motherboard Page 156 E 1 DMA Mapping Figure E 1 DMA Mapping E 2 IO Mapping Figure E 2 IO Mapping 1 of 2 ...
Страница 171: ...IMBA 30104 ATX Motherboard Page 157 Figure E 3 IO Mapping 2 of 2 ...
Страница 172: ...IMBA 30104 ATX Motherboard Page 158 E 3 IRQ Mapping Figure E 4 IRQ Mapping ...
Страница 173: ...IMBA 30104 ATX Motherboard Page 159 E 4 Memory Mapping Figure E 5 Memory Mapping ...
Страница 174: ...IMBA 30104 ATX Motherboard Page 160 Appendix F F Compatibility ...
Страница 177: ...IMBA 30104 ATX Motherboard Page 163 Appendix G G Hazardous Materials Disclosure ...
Страница 181: ...IMBA 30104 ATX Motherboard Page 167 Index ...