Part III: Appendixes
System Resources
221
The following table lists the computer’s DMA channel
assignments.
Input/output port address assignments
The CPU accesses input/output devices, such as modems, by
reading from them or writing to them. Each command to read or
write must specify the address (in memory) for the port. Each
device that communicates with the CPU must have a unique I/O
port address.
The following table lists the device names and their assigned I/O
port addresses for the computer.
DMA
Use
Notes
0
Sound system
Choice for sound system
1
Sound system
Choice for ECP
2
3.5-inch diskette drive
3
ECP
Choice for sound system, ECP
4
Cascade from DMA channel 1
5
Reserved
6
Reserved
7
Reserved
Port address
(h)
Device/function
Notes
000-01F
82C37: DMA controller 1
020-03F
82C59: PIC 1
040-05F
82C54: timer
Содержание 8000 series
Страница 16: ...The documents included with this product xviii Safety cautions xviii Other documentation xx Service options xx ...
Страница 21: ...xxi ...
Страница 22: ......
Страница 43: ...Part I Getting to Know Your Computer To Begin When and how to turn off the computer 19 ...
Страница 77: ...Part I Getting to Know Your Computer Hardware Features Using external speakers or headphones 53 ...
Страница 107: ...Part I Getting to Know Your Computer Using Drives Playing a DVD video 83 ...
Страница 122: ...Chapter Hot keys for Windows 95 Windows NT 99 Hot keys for Windows 98 101 Fn esse 101 Working with the keyboard 105 ...
Страница 174: ......
Страница 176: ...Chapter Using TSETUP 153 Using Hardware Setup 154 ...
Страница 182: ...Chapter Using a password in Windows 95 and Windows 98 159 Using a password in Windows NT Workstation 4 0 175 ...
Страница 209: ...Part II Technical Reference Keeping Your Files Safe Using a password in Windows NT Workstation 4 0 185 ...
Страница 210: ...Chapter Industry standard architecture 187 System management 189 Security management 196 ...
Страница 224: ......
Страница 226: ...Appendix Built in features 203 Optional accessories and devices 211 Specifications 214 ...
Страница 239: ...Part III Appendixes Features and Specifications 215 ...
Страница 240: ...Appendix ...
Страница 242: ...Appendix IRQ level assignments 219 DMA channel assignments 220 Input output port address assignments 221 ...
Страница 249: ...Part III Appendixes System Resources 225 ...
Страница 250: ...Appendix ...
Страница 254: ...Part III Appendixes Video Modes 230 ...