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Appendix A
System Input/Output (I/O) addresses
This table shows the hexadecimal addresses for each of the system board I/O functions. You may want to use this
information if you install an adapter card that requires you to set I/O addresses.
Table 12: System I/O addresses
Address range
(hexadecimal)
Function
0000-001F
DMA controller
0020-0021
Interrupt controller 1
0028-002A
Reserved
0040-0043
System timers
0060
Keyboard/mouse controller
0061
System control port B
0064
Keyboard/mouse controller
0070-0071
RTC/CMOS and NMI mask
0080-008F
DMA controller
0092
System control port A
00A0-00A1
Interrupt controller 2
00C0-00DF
DMA controller
00F0-00FF
Math coprocessor
0100-0101
Reserved
0102
SVGA controller
0108-0109
Reserved
Summary of Contents for Aptiva
Page 1: ...Hardware Handbook...
Page 12: ...2 Part 1 Reference information...
Page 24: ...14 Performance tips...
Page 32: ...Controlling the volume on multimedia systems 22...
Page 50: ...40 Modem regulations...
Page 88: ...78 Features of the Configuration Setup Utility...
Page 90: ...80 Part 2 Installing options...
Page 112: ...102 Installing and removing a hard disk in bay 4...
Page 130: ...120 Appendix A...
Page 136: ...126 Index...