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ACTION DESK 4000

EPSON, INC.

ACTION DESK 4000

Processor

80486SX/80487SX/80486DX/80486DX2

Processor Speed

25/33/50(internal)/66(internal)MHz

Chip Set

Unidentified

Video Chip Set

Cirrus Logic

Maximum Onboard Memory

64MB

Maximum Video Memory

2MB

Cache

64/128/256KB

BIOS

Unidentified

Dimensions

220mm x 220mm

I/O Options

Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA port, riser slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Floppy drive interface

CN1

VGA port

CN6

PS/2 mouse port

CN2

IDE interface 1

CN7

Serial port 1

CN3

Front panel connector

CN8

Serial port 2

CN4

Turbo switch

J22

Parallel port

CN5

Riser slot

SL1

USER CONFIGURABLE SETTINGS

Function

Label

Position

Parallel port LPT select LPT1

J5

Pins 1 & 2 closed

 

Parallel port LPT select LPT2

J5

Pins 2 & 3 closed

Serial port 1 COM select COM1

J6

Pins 1 & 2 closed

 

Serial port 1 COM select COM3

J6

Pins 2 & 3 closed

Serial port 2 COM select COM2

J7

Pins 1 & 2 closed

 

Serial port 2 COM select COM4

J7

Pins 2 & 3 closed

Floppy drive interface enabled

J8

Pins 1 & 2 closed

 

Floppy drive interface disabled

J8

Pins 2 & 3 closed

Turbo enabled

J22

Open

 

Turbo disabled

J22

Closed

Battery type select internal

J34

Pins 2 & 3 closed

 

CMOS memory clear

J34

Pins 3 & 4 closed

IDE interface enabled

J35

Pins 1 & 2 closed

 

IDE interface disabled

J35

Pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

4MB

(1) 1M x 36

None

5MB

(1) 1M x 36

(1) 256K x 36

6MB

(1) 1M x 36

(1) 512K x 36

8MB

(1) 1M x 36

(1) 1M x 36

8MB

(1) 2M x 36

None

9MB

(1) 2M x 36

(1) 256K x 36

10MB

(1) 2M x 36

(1) 512K x 36

12MB

(1) 1M x 36

(1) 2M x 36

12MB

(1) 2M x 36

(1) 1M x 36

16MB

(1) 2M x 36

(1) 2M x 36

16MB

(1) 4M x 36

None

17MB

(1) 4M x 36

(1) 256K x 36

18MB

(1) 4M x 36

(1) 512K x 36

20MB

(1) 4M x 36

(1) 1M x 36

24MB

(1) 4M x 36

(1) 2M x 36

32MB

(1) 4M x 36

(1) 4M x 36

32MB

(1) 8M x 36

None

33MB

(1) 8M x 36

(1) 256K x 36

34MB

(1) 8M x 36

(1) 512K x 36

36MB

(1) 8M x 36

(1) 1M x 36

40MB

(1) 8M x 36

(1) 2M x 36

48MB

(1) 4M x 36

(1) 8M x 36

48MB

(1) 8M x 36

(1) 4M x 36

64MB

(1) 8M x 36

(1) 8M x 36

Note: The location of banks 0 & 1 are unidentified.

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

None

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

Note: The location of banks 0 & 1 and the TAG are unidentified.

CACHE JUMPER CONFIGURATION

Size

J25

J26

J27

J28

64KB

Pins 1 & 2 closed

Pins 1 & 2 closed

Open

Pins 2 & 3 closed

128KB

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

256KB

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

VIDEO MEMORY CONFIGURATION

Size

Bank 0

Bank 1

1MB

1MB

None

2MB

1MB

(2) 256K x 16

Note: Bank 0 is factory installed and is not configurable.

CPU SPEED SELECTION

Speed

J16

25MHz

Pins 5 & 6 closed

33MHz

Pins 1 & 2 closed

50iMHz

Pins 5 & 6 closed

66iMHz

Pins 1 & 2 closed

CPU TYPE SELECTION

Type

J17

J19

80486SX

Pins 2 & 3 closed

Open

80487SX

Pins 1 & 2, 3 & 4 closed

Pins 2 & 3 closed

80486DX

Pins 1 & 2, 3 & 4 closed

Pins 1 & 2 closed

80486DX2

Pins 1 & 2, 3 & 4 closed

Pins 1 & 2 closed