Computer Hardware User Manual

User’s Manual

DMA5 Available for PCI and ISA Slot

DMA6 Available for PCI and ISA Slot

DMA7 Available for PCI and ISA Slot

Memory Map

The following table indicates memory of AW-A795. The address ranges specify the runtime

code length.

Memory below 1MB (1Mb ~ 640KB)

Address Range Type Owner

A0000~AFFFF ISA VGA Adapter

B0000~BFFFF ISA VGA Adapter

C0000~C7FFF ISA Adapter ROM

F0000~FFFFF ISA System BIOS

Memory above 1MB (1MB ~ 142336KB)

Address Range Type Owner

F0000000~F7FFFFFF PCI PCI – PCI Bridge

F8000000~F82FFFFF PCI PCI – PCI Bridge

System Memory Map

Start High Start Low Size High Size Low Type

00000000 00000000 00000000 0009FC00 Available

00000000 000F0000 00000000 00010000 Reserved

00000000 FFC00000 00000000 00100000 Reserved

00000000 FEE00000 00000000 00001000 Reserved

00000000 FFB00000 00000000 00500000 Reserved

00000000 0009FC00 00000000 00000400 Reserved

00000000 00100000 00000000 3FF00000 Available

I/O Map

The addresses shown in the table are typical locations.

I/O Port Assignment

0 ~ F AT DMA Controller

20 ~ 21 AT Interrupt Controller

40 ~ 43 82C54 Compatible Programmable

Timer