EPSON ActionPC 7000, ActionTower 7000, Endeavor 486i

Hard Disk Drive Information

The following table lists parameters for hard disk drives qualified for use in the computer.

Hard disk the parameters

IDE hard disk drive jumper settings

Model number

 

 

Single drive

Conner

CFS1275A

 

C/D

jumpered

Conner

CFS850A

 

C/D

jumpered

Conner

CFS540A

 

C/D

jumpered

Conner

CFS425A

 

C/D

jumpered

Conner

CFS420A

 

CID

jumpered

Conner

CFS270A

 

CID

jumpered

Western

Digital

AC2540

 

No jumpers

Western

Digital

AC2420

 

No

Jumpers

Western

Digital

AC2340

 

No

jumpers

Western

Digital

AC2250

 

No

jumpers

DMA

Assignments

 

 

 

 

Level

 

Assigned device

DMA0

 

Reserved

DMA1

 

Available

DMA2

 

Diskette drive controller

DMA3

 

Available

DMA4

 

Cascade from DMA1 to DMA2

DMA5

 

Spare

DMA6

 

Spare

DMA7

 

Spare

Hardware

Interrupts

 

 

 

 

 

 

 

IRQ no.

Function

 

IRQO

Timer

output 0

 

IRQI

Keyboard

 

IRQ2

Cascade to IRQ9

 

IRQ3

Serial

oortport 2

 

IRQ4

Serial port 1

 

IRQ5

AvaIlable

 

IRQ6

Diskette dwe controller

 

IRQ7

Parallel oortport 1

 

IRQ8

Real-time clock

 

IRQ9

AvaIlable

 

IRQIO

AvaIlable

 

IRQI 1

1AvaIlable

 

IRQ12

PS12 mouse

 

IRQ13

Math coprocessor

 

IRQ14

Primary IDE controller

 

IRQ15

Secondary IDE controller

 

System Memory Map

 

 

 

Address range

Function

FEOOOOh-FFFFFFh

128KB dupllcatlon of ROM BIOS stored at

 

OEOOOOh-OFFFFFh

IOOOOOh-FDFFFFh

System extended memory (128MB maxlmum)

OEOOOOh-OFFFFFh

128KB ROM BIOS

OC8000h.ODFFFFh

Adapter ROM BIOS

OCOOOOh-OC7FFFh

Video ROM BIOS

OAOOOOh-OBFFFFh

128KB video memory

OOOOOOh-09FFFFh

640KB base memorv

5/19/95 ActionPC 7000, ActionTower 7000, Endeavor 486i - 7