MORSE TECHNOLOGIES, INC.

P1

Processor

80486SX/80487SX/80486DX

Processor Speed

16/20/25/33MHz

Chip Set

Morse

Max. Onboard DRAM

16MB

Cache

64/128/256KB

BIOS

AMI/Award

Dimensions

220mm x 220mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP2

Turbo LED

JP16

Power LED & keylock

JP14

Speaker

JP17

Turbo switch

JP15

Reset switch

JP18

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Battery select internal 3.6VDC

JP4

Closed

 

Battery select external 6VDC

JP4

Open

»

Parity check enabled

JP5

Closed

 

Parity check disabled

JP5

Open

»

Monitor type select color

JP6

Closed

 

Monitor type select monochrome

JP6

Open

»

CMOS memory normal operation

JP7

Open

 

CMOS memory clear

JP7

Closed

»

Keyboard diagnostic disabled

JP19

Open

 

Keyboard diagnostic enabled

JP19

Closed

Note:Locations of JP5, JP6, JP7, & JP19 are unidentified.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

5MB

(4) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

17MB

(4) 4M x 9

(4) 256K x 9

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG (U26)

TAG (U42)

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

NONE

128KB

NONE

(4) 32K x 8

(1) 8K x 8

NONE

256KB

(4) 32K x 8

(4) 32K x 8

(1) 8K x 8

(1) 8K x 8

SRAM JUMPER CONFIGURATION

Size

JP8A

JP8B

JP8D

JP8E

JP8F

64KB

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

128KB

1 & 2

1 & 2

1 & 2

1 & 2

2 & 3

256KB

2 & 3

1 & 2

2 & 3

1 & 2

1 & 2

Note:Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP12

JP13

JP30

80486SX

Pins 2 & 3 closed

pins 2 & 3 closed

Open

80487SX

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

80486DX

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

Note:When changing the CPU, the Oscillator at Y2 must also be changed so that its speed is equal

to twice the speed of the processor. e.g. A 25MHz CPU would require a 50MHz Oscillator.