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EXPRESS STATION

EPSON, INC.

EXPRESS STATION

Processor

80486SX/80487SX/80486DX

Processor Speed

25/33MHz

Chip Set

Unidentified

Video Chip Set

Unidentified

Maximum Onboard Memory

32MB

Maximum Video Memory

1MB

Cache

128KB

BIOS

Unidentified

Dimensions

254mm x 218mm

I/O Options

AUI connector, Twisted Pair connector, floppy drive interface, SCSI interface, parallel port, PS/2 mouse port, serial ports (3), VGA feature connector, VGA port, riser slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Floppy drive interface

CN2

PS/2 mouse port

J8

Serial port 1

J1

VGA port

J16

Power connector

J2

Twisted Pair connector

J17

Serial port

J4

AUI connector

J18

Serial port

J4A

VGA feature connector

J20

Parallel port

J6A

Riser slot

SL1

SCSI interface

J6B

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

?

Floppy drive write protect disabled

J3

Pins 4 & 6 closed

 

Floppy drive write protect enabled

J3

Pins 2 & 4 closed

?

Factory configured - do not alter

J10

Unidentified

?

On board video enabled

J19

Pins 2 & 4 closed

 

On board video disabled

J19

Pins 4 & 6 closed

?

Password normal operation

J21

Pins 4 & 6 closed

 

Password clear

J21

Pins 2 & 4 closed

?

CMOS memory normal operation

J21

Pins 11 & 13 closed

 

CMOS memory clear

J21

Pins 9 & 11 closed

?

Flash BIOS normal operation

J21

Pins 10 & 12 closed

 

Flash BIOS recovery mode

J21

Pins 12 & 14 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(1) 256K x 36

None

None

None

2MB

(1) 512K x 36

None

None

None

2MB

(1) 256K x 36

(1) 256K x 36

None

None

4MB

(1) 1M x 36

None

None

None

4MB

(1) 512K x 36

(1) 512K x 36

None

None

4MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

8MB

(1) 2M x 36

None

None

None

8MB

(1) 1M x 36

(1) 1M x 36

None

None

8MB

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

16MB

(1) 2M x 36

(1) 2M x 36

None

None

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

32MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

CACHE CONFIGURATION

Size

CN3

None

Not installed

128KB

Intel 485 TurboCache module installed

VIDEO MEMORY CONFIGURATION

Size

Bank 0

Bank 1

512KB

512KB

None

1MB

512KB

(4) 256K x 4

Note: Bank 0 is factory installed and is not configurable. The location is unidentified.

VIDEO MEMORY JUMPER CONFIGURATION

Size

J19

512KB

Pins 1 & 3 closed

1MB

Pins 3 & 5 closed

FLASH BIOS CONFIGURATION

Setting

J5

J21

Write protect disabled

Pins 2 & 4 closed

Pins 1 & 3 closed

 

Write protect enabled

Pins 4 & 6 closed

Pins 3 & 5 closed