System I/O addresses

The following table shows the location in I/O space of all directly I/O-accessible registers.

Address

 

Resource

 

 

 

0000h

- 000Fh

DMA Controller 1

 

 

 

0010h

- 001Fh

DMA Controller 1

 

 

 

 

0020h

-

0021h

Interrupt Controller 1

 

 

0022h - 0023h

 

 

 

 

 

0024h

-

0025h

Interrupt Controller 1

 

 

0026h - 0027h

 

 

 

 

 

0028h

-

0029h

Interrupt Controller 1

 

 

002Ah - 002Bh

 

 

 

002Ch - 002Dh

Interrupt Controller 1

 

 

002Eh - 002Fh

Super I/O Index and Data Ports

 

 

 

 

0030h

-

0031h

Interrupt Controller 1

 

 

0032h - 0033h

 

 

 

 

 

0034h

-

0035h

Interrupt Controller 1

 

 

0036h - 0037h

 

 

 

 

 

0038h

-

0039h

Interrupt Controller 1

 

 

003Ah - 003Bh

 

 

 

003Ch - 003Dh

Interrupt Controller 1

 

 

003Eh - 003Fh

 

 

 

0040h - 0043h

Programmable Timers

 

 

 

0044h

- 004Fh

 

 

 

0050h - 0053h

Programmable Timers

 

 

 

0054h

- 005Fh

 

 

 

 

 

System I/O addresses

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