178 Maintaining and Troubleshooting the Gateway ALR 9200 ServerSystem I/O AddressesTable 37 shows the location in I/O space of all directly I/O-accessibleregisters.Table 37: System I/O AddressesAddress Resource Device Notes0000h - 000Fh DMA Controller 1 PIIX4E0010h - 001Fh DMA Controller 1 PIIX4E Aliased from 0000h - 000Fh0020h - 0021h Interrupt Controller 1 PIIX4E0022h - 0023h0024h - 0025h Interrupt Controller 1 PIIX4E Aliased from 0020h - 0021h0026h - 0027h0028h - 0029h Interrupt Controller 1 PIIX4E Aliased from 0020h - 0021h002Ah - 002Bh002Ch - 002Dh Interrupt Controller 1 PIIX4E Aliased from 0020h - 0021h002Eh - 002Fh Super I/O Index and DataPorts0030h - 0031h Interrupt Controller 1 PIIX4E Aliased from 0020h - 0021h0032h - 0033h0034h - 0035h Interrupt Controller 1 PIIX4E Aliased from 0020h - 0021h0036h - 0037h0038h - 0039h Interrupt Controller 1 PIIX4E Aliased from 0020h - 0021h003Ah - 003Bh003Ch - 003Dh Interrupt Controller 1 PIIX4E Aliased from 0020h - 0021h003Eh - 003Fh0040h - 0043h Programmable Timers PIIX4E0044h - 004Fh0050h - 0053h Programmable Timers PIIX4E Aliased from 0040h - 0043h0054h - 005Fh0060h, 0064h Keyboard Controller Keyboard chip select from873070061h NMI Status & ControlRegisterPIIX4E0063h NMI Status & ControlRegisterPIIX4E Aliased0065h NMI Status & ControlRegisterPIIX4E Aliased0067h NMI Status & ControlRegisterPIIX4E Aliased
