EPSON, INC.

ACTION PC 2600, ACTION PC 5500

Processor

80846DX/CX486DX2/80486DX2/SL80486DX2/AM486DX4/ 80486DX4/P24D/P24T/CX M1SC

Processor Speed

25/33/50(internal)/66(internal)/75(internal)/100(internal)/MHz

Chip Set

Unidentified

Video Chip Set

Trident

Maximum Onboard Memory

132MB

Maximum Video Memory

1MB

Cache

128/256KB

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

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

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

IDE interface 1

CN1

Serial port 1

CN11

IDE interface 2

CN2

Serial port 2

CN12

IDE interface LED

CN3

Parallel port

CN13

Power LED

CN4

Riser slot

SL1

PS/2 mouse port

CN8

VGA port

VNC1

Floppy drive interface

CN10

VGA feature connector

VNC3

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

CMOS memory normal operation

JP28

Pins 2 & 3 closed

 

CMOS memory clear

JP28

Pins 1 & 2 closed

»

Factory configured - do not alter

JP29

Unidentified

»

Factory configured - do not alter

JP34

Unidentified

»

Factory configured - do not alter

JP35

Unidentified

»

Factory configured - do not alter

VJ1

Unidentified

»

Monitor type select interlaced

VJ3

Closed

 

Monitor type select non interlaced

VJ3

Open

»

Factory configured - do not alter

VJ4

Unidentified

»

On board video enabled

VJP1

Pins 2 & 3 closed

 

On board video disabled

VJP1

Pins 1 & 2 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

4MB

4MB

None

None

5MB

4MB

(1) 256K x 32

None

6MB

4MB

(1) 256K x 32

(1) 256K x 32

6MB

4MB

(1) 512K x 32

None

8MB

4MB

(1) 512K x 32

(1) 512K x 32

8MB

4MB

(1) 1M x 32

None

12MB

4MB

(1) 1M x 32

(1) 1M x 32

12MB

4MB

(1) 2M x 32

None

20MB

4MB

(1) 2M x 32

(1) 2M x 32

20MB

4MB

(1) 4M x 32

None

36MB

4MB

(1) 4M x 32

(1) 4M x 32

36MB

4MB

(1) 8M x 32

None

68MB

4MB

(1) 8M x 32

(1) 8M x 32

68MB

4MB

(1) 16M x 32

None

132MB

4MB

(1) 16M x 32

(1) 16M x 32

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

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

128KB

(4) 32K x 8

None

(1) 32K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

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

CACHE JUMPER CONFIGURATION

Size

JP19

JP20

JP21

None

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

128KB

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

256KB

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

VIDEO MEMORY CONFIGURATION

Size

Bank 0

Bank 1

512KB

512KB

None

1MB

512KB

512KB

Note: Bank 0 is factory installed and is not configurable. The size of the upgrade chips is unidentified.

CPU SPEED SELECTION

Speed

JP24

JP25

25MHz

Pins 2 & 3 closed

Pins 2 & 3 closed

33MHz

Pins 1 & 2 closed

Pins 1 & 2 closed

50iMHz

Pins 2 & 3 closed

Pins 2 & 3 closed

66iMHz

Pins 1 & 2 closed

Pins 1 & 2 closed

75iMHz

Pins 2 & 3 closed

Pins 2 & 3 closed

100iMHz

Pins 1 & 2 closed

Pins 1 & 2 closed

CPU TYPE SELECTION

Type

JP1

JP2

JP3

JP4

JP5

JP6

80486DX

1 & 2, 3 & 4

3 & 4

Open

2 & 3, 4 & 5

1 & 2

2 & 3

CX486DX2

1 & 2, 3 & 4

3 & 4

2 & 3

1 & 2, 3 & 4

1 & 2

2 & 3

80486DX2

1 & 2, 3 & 4

3 & 4

Open

2 & 3, 4 & 5

1 & 2

2 & 3

SL80486DX2

1 & 2, 3 & 4

3 & 4

Open

2 & 3, 4 & 5

1 & 2

2 & 3

AM486DX4

1 & 2, 3 & 4

3 & 4

Open

2 & 3, 4 & 5

1 & 2

2 & 3

80486DX4

1 & 2, 3 & 4

3 & 4

Open

2 & 3, 4 & 5

1 & 2

2 & 3

P24D

1 & 2, 3 & 4

3 & 4

Open

2 & 3, 4 & 5

1 & 2

2 & 3

P24T

1 & 2, 3 & 4

3 & 4

1 & 2

2 & 3, 4 & 5

1 & 2

2 & 3

CX M1SC

1 & 2, 3 & 4

3 & 4, 5 & 6

Open

2 & 3, 4 & 5

1 & 2

2 & 3

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)

Type

JP7

JP8

JP9

JP10

JP11

JP12

80486DX

1 & 2

Open

Open

Open

Open

3 & 4

CX486DX2

2 & 3

Open

2 & 3

1 & 2

Open

3 & 4

80486DX2

2 & 3

1 & 2

Open

Open

1 & 2

3 & 4

SL80486DX2

1 & 2

Open

Open

Open

Open

3 & 4

AM486DX4

1 & 2

Open

Open

Open

Open

3 & 4

80486DX4

1 & 2

Open

Open

Open

Open

3 & 4

P24D

1 & 2

1 & 2

Open

Open

1 & 2

3 & 4

P24T

1 & 2

Open

1 & 2

2 & 3

Open

2 & 3

CX M1SC

1 & 2

1 & 2

Open

Open

1 & 2

3 & 4

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)

Type

JP13

JP14

JP22

JP23

JP32

JP33

80486DX

Open

Open

1 & 2

1 & 2

Open

Open

CX486DX2

Open

Open

1 & 2

2 & 3

Open

Open

80486DX2

Open

1 & 2

1 & 2

1 & 2

Open

Open

SL80486DX2

Open

Open

1 & 2

1 & 2

Open

Open

AM486DX4

Open

Open

1 & 2

1 & 2

Open

Open

80486DX4

Open

Open

1 & 2

1 & 2

Open

Open

P24D

Open

1 & 2

1 & 2

1 & 2

Open

Open

P24T

Open

Open

1 & 2

1 & 2

Open

Open

CX M1SC

Open

1 & 2

1 & 2

2 & 3

Open

1 & 2

Note: Pins designated should be in the closed position.

CPU VOLTAGE SELECTION

Voltage

JP15

JP16

JP17

JP18

JP36

3.3v

Open

Open

Closed

Closed

2 & 3

3.45v

Open

Open

Closed

Closed

1 & 2

5v

Closed

Closed

Open

Open

Open

Note: Pins designated should be in the closed position.

DMA CHANNEL SELECTION

Channel

JP30

JP31

 

1

Pins 1 & 2 closed

Pins 1 & 2 closed

»

3

Pins 2 & 3 closed

Pins 2 & 3 closed