eMachines E644G eMachines E644 and E644G Series Serivce Guide - Page 51
System IO Address Map, I/O address hex, System function shipping configuration, FAST INIT register
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System IO Address Map I/O address (hex) 000 - 00F 010 - 01F 020 - 021 022 - 03F 040 - 043 060 061 062 - 063 064 065 - 06F 070 - 071 072 - 073 074 - 080 081 - 08F 090 - 091 092 093 - 09F 0A0 - 0A1 0A2 - 0BF 0C0 - 0DF 0E0 - 0EF 0F0 - 0FF 100 - 3AF 3B0 - 3BB 3BC - 3BF 3C0 - 3DF 3E0 - 40A 40B 40C - 4CF 4D0 4D1 - 4D5 System function (shipping configuration) DMA controller no. 1 Unused Interrupt controller no. 1 Unused Counter/timer registers Keyboard controller Speaker controller Unused Keyboard controller Unused CMOS/RTC Alternate RTC address port / data port Unused DMA page registers Unused FAST INIT register Unused Interrupt controller no. 2 Unused DMA controller no. 2 Unused Numeric data processor Unused VGA Unused VGA Unused DMA1 Extend Unused Interrupt edge control Unused Hardware Specifications and Configurations 1-41