NEC N8100-1078F, User Manual

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C-2 IRQ and I/O Port Address
I/O Port Address
The factory-set I/O port addresses for the server are assigned as follows:
Address(es) Resource Notes
0000h – 000Fh DMA Controller 1
0010h – 001Fh DMA Controller 2 Aliased from 0000h – 000Fh
0020h – 0021h Interrupt Controller 1
0022h – 0023h
0024h – 0025h
Interrupt Controller 1 Aliased from 0020 – 0021h
0026h – 0027h
0028h – 0029h
Interrupt Controller 1 Aliased from 0020h – 0021h
002Ah – 002Bh
002Ch – 002Dh
Interrupt Controller 1 Aliased from 0020h – 0021h
002Eh – 002Fh Super I/O (SIO) index and Data ports
0030h – 0031h Interrupt Controller 1 Aliased from 0020h – 0021h
0032h – 0033h
0034h – 0035h
Interrupt Controller 1 Aliased from 0020h – 0021h
0036h – 0037h
0038h – 0039h
Interrupt Controller 1 Aliased from 0020h – 0021h
003Ah – 003Bh
003Ch – 003Dh
Interrupt Controller 1 Aliased from 0020h – 0021h
003Eh – 003Fh
0040h – 0043h
Programmable Timers
0044h – 004Fh
0050h – 0053F
Programmable Timers
0054h – 005Fh
0060h, 0064h
Keyboard Controller Keyboard chip select from 87417
0061h NMI Status & Control Register
0063h NMI Status & Control Register Aliased
0065h NMI Status & Control Register Aliased
0067h NMI Status & Control Register Aliased
0070h NMI Mask (bit 7) & RTC address (bits 6::0)
0072h NMI Mask (bit 7) & RTC address (bits 6::0) Aliased from 0070h
0074h NMI Mask (bit 7) & RTC address (bits 6::0) Aliased from 0070h
0076h NMI Mask (bit 7) & RTC address (bits 6::0) Aliased from 0070h
0071h RTC Data
0073h RTC Data Aliased from 0071h
0075h RTC Data Aliased from 0071h
0077h RTC Data Aliased from 0071h
0080h – 0081h BIOS Timer
0080h – 008F DMA Low Page Register
0090h – 0091h DMA Low Page Register (aliased)
0092h System Control Port A (PC-AT control Port)
(this port not aliased in DMA range)
0093h – 009Fh DMA Low Page Register (aliased)
0094h Video Display Controller
00A0h – 00A1h Interrupt Controller 2
00A4h – 00A5h Interrupt Controller 2 (aliased)
00A8h – 00A9h Interrupt Controller 2 (aliased)