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PC 386 CE (IPB1)

DIGITAL EQUIPMENT CORPORATION

PC 386 CE (IPB1)

Processor

80386SX

Processor Speed

16MHz

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

4MB

Maximum Video Memory

None

Cache

None

BIOS

Unidentified

Dimensions

220mm x 220mm

I/O Options

External memory slots (2), floppy drive interface, SCSI interface, parallel port, serial ports (2)

NPU Options

80387

CONNECTIONS

Purpose

Location

Purpose

Location

Front panel connector

P1

Serial port

P8

Speaker

P2

Serial port

P9

Floppy drive interface

P4

SCSI interface

J19

External battery

P6

External memory slots

SL1 & SL2

Parallel port

P7

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

Factory configured - do not alter

J1

Unidentified

Factory configured - do not alter

J2

Unidentified

Factory configured - do not alter

J3

Unidentified

Speaker volume select normal volume

W1

Open

 

Speaker volume select low volume

W1

Closed

SCSI clock speed select 8MHz

W11

Pins 1 & 2 closed

 

SCSI clock speed select 16MHz

W11

Pins 2 & 3 closed

Floppy drive pre-compensation mode 125ns

W13

Open

 

Floppy drive pre-compensation mode 187ns

W13

Closed

Logic ground is connected to chassis ground

W20

Closed

 

Logic ground is not connected to chassis ground

W20

Open

Parallel port IRQ select IRQ5

W21

Pins 1 & 2 closed

 

Parallel port IRQ select IRQ7

W21

Pins 2 & 3 closed

 

Normal mode enabled

SW1/1

Off

 

Manufacturing mode enabled

SW1/1

On

 

PC mode enabled

SW1/2

Off

 

Terminal server mode enabled

SW1/2

On

 

Video speed select slow

SW2/1

Off

 

Video speed select fast

SW2/1

On

 

Monitor type select color

SW2/2

On

 

Monitor type select monochrome

SW2/2

Off

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

1MB

None

None

None

2MB

1MB

(1) 1M x 9

None

None

3MB

1MB

(1) 1M x 9

(1) 1M x 9

None

4MB

1MB

(1) 1M x 9

(1) 1M x 9

(1) 1M x 9

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

DRAM JUMPER CONFIGURATION

Size

W2

W3

1MB

Open

Open

2MB

Closed

Open

3MB

Open

Closed

4MB

Closed

Closed

FLOPPY DRIVE SELECTION

Setting

W4

W6

W7

Enabled

Closed

Closed

Closed

 

Disabled

Open

Open

Open

FLOPPY DRIVE MOTOR SPEED SELECTION

Speed

W10

W12

Single

Pins 2 & 3 closed

Pins 2 & 3 closed

 

Dual

Pins 1 & 2 closed

Pins 1 & 2 closed

SCSI INTERRUPT SELECTION

IRQ

W14

W15

W16

IRQ10

Open

Open

Closed

IRQ12

Open

Closed

Open

IRQ14

Closed

Open

Open