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6
I/O ADDRESSES, INTERUPTS ETC.
System I/O addresses
The following table shows the location in I/O space of all directly I/O-accessible registers.
Address
0000h - 000Fh
0010h - 001Fh
0020h - 0021h
0022h - 0023h
0024h - 0025h
0026h - 0027h
0028h - 0029h
002Ah - 002Bh
002Ch - 002Dh
002Eh - 002Fh
0030h - 0031h
0032h - 0033h
0034h - 0035h
0036h - 0037h
0038h - 0039h
003Ah - 003Bh
003Ch - 003Dh
003Eh - 003Fh
0040h - 0043h
0044h - 004Fh
0050h - 0053h
0054h - 005Fh
0060h, 0064h
0061h
0063h
0065h
0067h
0070h
0072h
0074h
0076h
0071h
0073h
Resource
DMA Controller 1
DMA Controller 1
Interrupt Controller 1
Interrupt Controller 1
Interrupt Controller 1
Interrupt Controller 1
Super I/O Index and Data Ports
Interrupt Controller 1
Interrupt Controller 1
Interrupt Controller 1
Interrupt Controller 1
Programmable Timers
Programmable Timers
Keyboard Controller
NMI Status & Control Register
NMI Status & Control Register
NMI Status & Control Register
NMI Status & Control Register
NMI Mask (bit 7) & RTC Address (bits 6::0)
NMI Mask (bit 7) & RTC Address (bits 6::0)
NMI Mask (bit 7) & RTC Address (bits 6::0)
NMI Mask (bit 7) & RTC Address (bits 6::0)
RTC Data
RTC Data
Device
Notes
PIIX4E
PIIX4E
Aliased from 0000h - 000Fh
PIIX4E
PIIX4E
Aliased from 0020h - 0021h
PIIX4E
Aliased from 0020h - 0021h
PIIX4E
Aliased from 0020h - 0021h
PIIX4E
Aliased from 0020h - 0021h
PIIX4E
Aliased from 0020h - 0021h
PIIX4E
Aliased from 0020h - 0021h
PIIX4E
Aliased from 0020h - 0021h
PIIX4E
PIIX4E
Aliased from 0040h - 0043h
Keyboard chip select from 87307
PIIX4E
PIIX4E
Aliased
PIIX4E
Aliased
PIIX4E
Aliased
PIIX4E
PIIX4E
Aliased from 0070h
PIIX4E
Aliased from 0070h
PIIX4E
Aliased from 0070h
PIIX4E
PIIX4E
Aliased from 0071h
FT5000 HANDBOOK
6/1
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