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System Board I/O Address Map
Figure 1-3 shows the I/O address map.
Figure 1-3 (Part 1 of 2). System Board I/O Address Map
Address (Hex) Device
0000–001F DMA controller (0–3)
0020, 0021 Interrupt controller (Master)
0022–003F Reserved
0040–0043 System timer 1
0048–004B Reserved
0060 Keyboard, auxiliary device
0061 System control port B
0064 Keyboard, auxiliary device
0070, 0071 RT/CMOS and NMI mask
0072–0077 Reserved
0078–007C Reserved
0081–0083, 0087 DMA page registers (0–3)
0089–008B, 008F DMA page registers (4–7)
0092 System control port A
0094 Reserved
0096 Reserved
0098 System flash ROM control register
00A0, 00A1 Interrupt controller (slave)
00C0–00DF DMA controller (4–7)
00F0–00FF Reserved
0102–0107 Reserved
0170–0177 Reserved
01A0–01DF Reserved
01F0–01F7 Hard disk drive registers
0201 Reserved
0220–022F Audio subsystem - Sound Blaster 1
0240–024F Audio subsystem - Sound Blaster 2
026E–026F Reserved
0278–027A Parallel port 3
027B–027F Reserved
02E8–02EF Serial port 4
02F8–02FF Serial port 2
0300–0302 Reserved
0330–0331 Reserved
0338–038B Reserved
0376–0377 Reserved
0378–037A Parallel port 2
037B–037F Reserved
0388–038B Audio subsystem - FM synthesizer
0398–0399 Reserved
1-6 ThinkPad 560/560E System Overview