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PC 2230 CE

DIGITAL EQUIPMENT CORPORATION

PC 2230 CE

Processor

80286

Processor Speed

12MHz

Chip Set

Unidentified

Video Chip Set

ATI

Maximum Onboard Memory

4MB

Maximum Video Memory

64KB

Cache

None

BIOS

Unidentified

Dimensions

238mm x 228mm

I/O Options

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

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

Floppy/hard drive power interface

J5

Serial port

J10

IDE interface

J6

Parallel port

J11

Floppy drive interface

J7

VGA port

J12

Serial port

J9

Riser slot

SL1

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

SIMM type select 256KB

W6

Open

 

SIMM type select 1MB

W6

Closed

»

BIOS type select 27256

W8

Closed

 

BIOS type select 27128

W8

Open

 

Shadow RAM enabled

W9

Open

 

Shadow RAM disabled

W9

Closed

 

SIMM type select all same type

W18

Open

 

SIMM type select mixed SIMMs

W18

Closed

»

Keyboard clock speed select 8MHz

W22

Pins 1 & 2 closed

 

Keyboard clock speed select 4MHz

W22

Pins 2 & 3 closed

»

Burn in mode not disabled

W26

Open

 

Burn in mode enabled

W26

Closed

»

Manufacturing mode disabled

W27

Open

 

Manufacturing mode enabled

W27

Closed

»

Floppy drive interface enabled

W28

Open

 

Floppy drive interface disabled

W28

Closed

»

Video type select normal

W29

Open

 

Video type select slow

W29

Closed

 

Speaker volume select high

W30

Open

 

Speaker volume select low

W30

Closed

»

60ns CAS enabled

W31

Closed

 

60ns CAS disabled

W31

Open

 

I/O half speed enabled

W33

Pins 1 & 2 closed

 

I/O half speed disabled

W33

Pins 2 & 3 closed

 

Monitor type select color

S1/1

On

 

Monitor type select monochrome

S1/1

Off

 

Monochrome mode using a color monitor

S1/2

On

 

Color mode using a monochrome monitor

S1/2

Off

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

256KB

(1) 256K x 9

None

None

None

512KB

(1) 256K x 9

(1) 256K x 9

None

None

768KB

(1) 256K x 9

(1) 256K x 9

(1) 256K x 9

None

1MB

(1) 256K x 9

(1) 256K x 9

(1) 256K x 9

(1) 256K x 9

1MB

(1) 1M x 9

None

None

None

1.2MB

(1) 1M x 9

(1) 256K x 9

None

None

1.5MB

(1) 1M x 9

(1) 256K x 9

(1) 256K x 9

None

1.79MB

(1) 1M x 9

(1) 256K x 9

(1) 256K x 9

(1) 256K x 9

DRAM CONFIGURATION (CON’T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

2MB

(1) 1M x 9

(1) 1M x 9

None

None

2.28MB

(1) 1M x 9

(1) 1M x 9

(1) 256K x 9

None

2.5MB

(1) 1M x 9

(1) 1M x 9

(1) 256K x 9

(1) 256K x 9

3MB

(1) 1M x 9

(1) 1M x 9

(1) 1M x 9

None

4MB

(1) 1M x 9

(1) 1M x 9

(1) 1M x 9

(1) 1M x 9

Note: The location of banks 0, 1, 2, & 3 is unidentified.

DRAM JUMPER SELECTION

SIMMS installed

W16

W17

1

Open

Open

2

Open

Closed

3

Closed

Open

4

Closed

Closed

DRAM SPEED SELECTION

Speed

W13

W14

100ns

Open

Closed

120ns

Closed

Open

VIDEO MEMORY CONFIGURATION

Note: The location of the 64KB video memory is unidentified.

ONBOARD VIDEO SELECTION

Setting

W10

W21

»

Enabled

Closed

Closed

 

Disabled

Open

Open

 

Disabled

Open

Closed

 

Disabled

Closed

Open