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ACTION DESK 4000+

EPSON, INC.

ACTION DESK 4000+

Processor

80486SX/80486DX/80486DX2/P24T

Processor Speed

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

Chip Set

Unidentified

Video Chip Set

Cirrus Logic

Maximum Onboard Memory

64MB

Maximum Video Memory

2MB

Cache

64/128/256KB

BIOS

Phoenix

Dimensions

254mm x 218mm

I/O Options

Floppy drive interface, IDE interface, game interface, riser slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Floppy drive interface

CN1

Turbo switch

J22

Game interface

CN2

Riser slot

SL1

IDE interface

CN7

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Factory configured – do not alter

CN8

Unidentified

»

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

»

VGA IRQ9 disabled

J14

Open

 

VGA IRQ9 enabled

J14

Closed

»

Fast speed enabled

J22

Open

 

8 Mhz enabled

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

1MB

(1) 256K x 36

None

2MB

(1) 256K x 36

(1) 256K x 36

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

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

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

36MB

(1) 8M x 36

(1) 1M x 36

40MB

(1) 8M x 36

(1) 2M x 36

48MB

(1) 8M x 36

(1) 4M x 36

64MB

(1) 8M x 36

(1) 8M x 36

Note: Board also accepts x 32 SIMMs.

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

Unidentified

128KB

(4) 32K x 8

None

Unidentified

256KB

(4) 32K x 8

(4) 32K x 8

Unidentified

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

50MHz

Pins 3 & 4 closed

66iMHz

Pins 1 & 2 closed

CPU TYPE SELECTION

Type

J17

J19

80486SX

Pins 2 & 3 closed

Open

80486DX

Pins 1 & 2, 3 & 4 closed

Pins 1 & 2 closed

80486DX2

Pins 1 & 2, 3 & 4 closed

Pins 1 & 2 closed

P24T

Pins 1 & 2, 3 & 4 closed

Pins 1 & 2 closed

ON BOARD VIDEO SELECTION

Setting

J36

J37

Enabled

Closed

Closed

Disabled

Open

Open