Filter
Top Products
System I/O Addresses 179
0070h NMI Mask (bit 7) & RTC
Address (bits 6::0)
PIIX4E
0072h NMI Mask (bit 7) & RTC
Address (bits 6::0)
PIIX4E Aliased from 0070h
0074h NMI Mask (bit 7) & RTC
Address (bits 6::0)
PIIX4E Aliased from 0070h
0076h NMI Mask (bit 7) & RTC
Address (bits 6::0)
PIIX4E Aliased from 0070h
0071h RTC Data PIIX4E
0073h RTC Data PIIX4E Aliased from 0071h
0075h RTC Data PIIX4E Aliased from 0071h
0077h RTC Data PIIX4E Aliased from 0071h
0080h - 008Fh DMA Low Page Register PIIX4E
0090h - 0091h DMA Low Page Register PIIX4E Aliased
0092h System Control Port A
(PC-AT control Port)
PIIX4E Not aliased in DMA range
0093h - 009Fh DMA Low Page Register PIIX4E Aliased
0094h Video Display Controller
00A0h - 00A1h Interrupt Controller 2 PIIX4E
00A4h - 00A15 Interrupt Controller 2 PIIX4E Aliased
00A8h - 00A19 Interrupt Controller 2 PIIX4E Aliased
00Ach - 00Adh Interrupt Controller 2 PIIX4E Aliased
00B0h - 00B1h Interrupt Controller 2 PIIX4E Aliased
00B2h Advanced Power
Management Control
PIIX4E
00B3h Advanced Power
Management Status
PIIX4E
00B4h - 00B5h Interrupt Controller 2 PIIX4E Aliased
00B8h - 00B9h Interrupt Controller 2 PIIX4E Aliased
00BCh - 00BDh Interrupt Controller 2 PIIX4E Aliased
00C0h - 00DFh DMA Controller 2 PIIX4E
00F0h Clear NPX error Resets IRQ13
00F8h - 00FFh x87 Numeric Coprocessor
0102h Video Display Controller
0170h - 0177h Secondary Fixed Disk
Controller (IDE)
PIIX4E Not used
01F0h - 01F7h Primary Fixed Disk
Controller (IDE)
PIIX4E
0200h - 0207h Game I/O Port Not used
Table 37: System I/O Addresses (Continued)
Address Resource Device Notes
3424.boo Page 179 Wednesday, September 2, 1998 9:23 AM