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System board i/o address map – IBM 560 User Manual

Page 14

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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