Appendix A: Specification Tables; System Input/Output Addresses - IBM Aptiva Series Handbook

System input/output addresses

This table shows the hexadecimal addresses for each of the system board Input/Output (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 6: System input/output addresses
Address range (hexadecimal)
0000-001F
0020-003F
0040-0047
0050-0057
0060-006F
0070
0078-007B
0080-009F
00A0-00BF
00C0-00DF
00F0
00F1
0F8-0FF
1F0-1F7
170-177
0278-027F
A-2

Appendix A: Specification tables

Function
DMA controller 1
Interrupt controller 1
System timer
System timer
System controller 8742
CMOS RAM address and NMI mask
Real-time clock
DMA page register
Interrupt controller 2
DMA controller 2
Clear math coprocessor
Reset math coprocessor
Math coprocessor
Primary IDE channel
Secondary IDE channel
Parallel port 2