NEW EPSON ActionPC 5000, ActionTower 5000

Diskette and magnet-optical drive specifications

DMA Assignments

 

 

 

 

 

Level

Assigned device

 

DMA0

Reserved

(8-bit)

 

DMA1

Reserved

(8-bit)

 

DMA2

FDD controller (8-bit)

 

DMA3

Reserved

(8-bit)

 

DMA4

Cascade for DMA controller 1

 

DMA5

Reserved

(16-bit)

 

DMA6

Resewed (16-bit)

 

DMA7

Resewed (16-bit)

 

Hardware Interrupts

System Memory Map

FFFFFFFFFh

 

 

 

System BIOS ROM: 64KB

 

 

Duplicated from 0F0000h

 

FFFFF0000h

 

 

Resewed for system board: 64KB

 

 

 

 

Duplicated from 0E0000h

64MB

 

 

(Maximum

4000000h

 

system

 

memory)

 

 

 

Extended memory

 

001000000h

 

 

System BIOS ROM: 64KB

 

 

 

 

Default Shadow RAM duplicated at FF0000h

 

OOOFOOOOh

 

 

Unused or I/O expansion ROM: 160KB

 

 

 

 

Resewed for ROM on I/O adapters

 

000C8000h

 

 

 

 

VGA BIOS ROM: 32KB

 

 

Default Shadow RAM

 

000C0000h

VGA text

 

000B8000h

 

 

000B0000h

 

 

 

Video memory: 64KB

 

 

Resewed for graphics display buffer

 

000A0000h

 

640KB

Conventional system memory: 640KB

 

 

 

 

 

8 - NEW EPSON ActionPC 5000, ActionTower 5000 8/94