Epson ETX-945 - Manual (Page 32)

ETX-945 User Manual 1.02 www.diamondsystems.com Page 32
5.2 I/O Port Address Map
Each peripheral device in the system is assigned a set of I/O port addresses, which also become the identity of
the device. The following table lists the I/O port addresses used:
Address Device Description
00000000 - 00000007 DMA Controller
00000000 - 00000CF7 PCI bus
00000010 - 0000001F Motherboard Resource
00000020 - 00000021 Programmable Interrupt Controller
00000022 - 0000003F Motherboard Resource
00000040 - 00000043 System Timer
00000044 - 0000005F Motherboard Resource
00000060 - 00000060 Standard 0 / 02-Key or Microsoft Natural PS/2 Keyboard
00000061 – 00000061 System Speaker
00000062 - 00000063 Motherboard Resource
00000064 - 00000064 Standard 0 / 02-Key or Microsoft Natural PS/2 Keyboard
00000065 - 0000006F Motherboard Resource
00000070 - 00000073 System CMOS/real time clock
00000074 - 0000007F Motherboard Resource
00000080 - 00000090 DMA Controller
00000091 - 00000093 Motherboard Resource
00000094 - 0000009F DMA Controller
000000A0 - 000000A1 Programmable Interrupt Controller
000000A2 - 000000BF Motherboard Resource
000000C0 - 000000DF DMA Controller
000000E0 - 000000EF Motherboard Resource
000000F0 - 000000FF Numeric Data Processor
000001F0 - 000001F7 Primary IDE Channel
00000274 - 00000277 ISAPNP Read Data Port
00000279 - 00000279 ISAPNP Read Data Port
00000294 - 00000297 Motherboard Resource