Table of Contents
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Chapter 3
I/O Address Map
Table 3-3
shows the I/O address map. These are DOS-level addresses. The OS typically hides these physical
addresses by way of memory management.
Table 3-3.
I/O Address Map
Address (hex)
0000-000F
0020-0021
0040-0043
0060
0061
0062
0063
0064*
0065
0066
0067
0070-007F
0080
0081-0083
0084-0086
0087
0088
0089-008B
008C-008E
008F
0090-0091
0092
0093-009F
00A0-00A1
00A2-00BF
00C0-00DF
00E0-00EF
00F0-00FF
01F0-01F7
0201
0205
02E8-02EF*
02F8-02FF*
360
364
0378-037F*
18
Subsystem
System reserved
Master Interrupt Controller
Programmable Interrupt Timer (Clock/Timer)
Keyboard Controller
NMI, Speaker control
Board Controller
NMI Controller
Keyboard Controller
NMI Controller
Board Controller
NMI Controller
CMOS RAM, NMI Mask Reg, RT Clock
System reserved
System reserved
System reserved
System reserved
System reserved
System reserved
System reserved
System reserved
System reserved
Fast A20 gate and CPU reset
System reserved
Slave Interrupt Controller
System reserved
System reserved
System reserved
Math Coprocessor
IDE Hard Disk Controller
Watchdog Timer (WDT)
System reserved
Serial Port 4 (COM4)
Serial Port 2 (COM2)
Board Controller
Board Controller
Parallel Port (Standard and EPP)
Reference Manual
Hardware
CoreModule 730
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