...because we can't all be on the bleeding edge...





EQUITY 4 SERIES

EPSON, INC.

EQUITY 4 SERIES

Processor

80486SX/80487SX/80486DX/ODP486SX/80486DX2

Processor Speed

20/25/33/50(internal)/66(internal) MHz

Chip Set

Toshiba

Max. Onboard DRAM

32MB

SRAM Cache

None

BIOS

Award

Dimensions

330mm x 218mm

I/O Options

Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, PS/2 keyboard connector, proprietary riser card, serial port (2), VGA feature connector, VGA port

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

PS/2 mouse port

CN2

Reserved for future use

CN11

PS/2 keyboard

CN3

Speaker

CN12

Serial port 2

CN4

Reserved for future use

CN13

Serial port 1

CN5

Reserved for future use

CN14

Parallel port

CN6

Reserved for future use

CN15

VGA port

CN7

IDE interface LED

CN16

VGA feature connector

CN8

Power LED

CN17

Floppy drive interface

CN9

Proprietary riser card

SLOT1

IDE interface

CN10

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select monochrome

J5

Open

 

Monitor type select color

J5

Closed

Onboard video enabled

J6

pins 1 & 2 closed

 

Onboard video disabled

J6

pins 2 & 3 closed

CMOS memory normal operation

J7

Open

 

CMOS memory clear

J7

Closed

Factory configured - do not alter

J8

pins 1 & 2 closed

Factory configured - do not alter

J13

pins 2 & 3 closed

Factory configured - do not alter

J14

pins 2 & 3 closed

Factory configured - do not alter

J15

pins 2 & 3 closed

Fast Gate A20 enabled

J18

pins 1 & 2 closed

 

Fast Gate A20 disabled

J18

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) 256K x 36

(1) 1M x 36

8MB

(1) 1M x 36

(1) 1M x 36

16MB

(1) 4M x 36

NONE

17MB

(1) 256K x 36

(1) 4M x 36

20MB

(1) 1M x 36

(1) 4M x 36

32MB

(1) 4M x 36

(1) 4M x 36

CPU SPEED CONFIGURATION

Speed

J19

J20

J21

J22

20MHz

Closed

Open

Closed

Open

25/50i MHz

Open

Open

Closed

Open

33/66i MHz

Closed

Open

Open

Open

CPU TYPE CONFIGURATION

CPU

Type

J10

J11

J12

J23

80486SX

PQFP

pins 1 & 2

pins 1 & 2

pins 2 & 3

pins 1 & 2

80486SX

PGA

pins 2 & 3

pins 2 & 3

Open

pins 2 & 3

80487SX

PGA

pins 1 & 2

pins 1 & 2

pins 2 & 3

pins 2 & 3

80486DX

PGA

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 2 & 3

Note:Pins designated should be in the closed position.