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486 VL3 CACHE (MV035E)

DASH COMPUTER, INC.

486 VL3 CACHE (MV035E)

Device Type

Mainboard

Processor

80486SX/80487SX/80486DX/CX M6/CX M7/P24C/P24D/P24T

Processor Speed

25/33/40/50(internal)/50/66(internal)/100(internal)MHz

Chip Set

OPTI

Video Chip Set

None

Maximum Onboard Memory

128MB

Maximum Video Memory

None

Cache

64/128/256/512KB

BIOS

Award

Dimensions

250mm x 220mm

I/O Options

32-bit VESA local bus slots (3), green PC connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J2

Speaker

JP38

Power LED & keylock

J22

Green PC connector

JP39

Green PC connector

JP6

Green PC LED

JP41

Turbo LED

JP34

Reset switch

S1

Turbo switch

JP36

32-bit VESA local bus slots

SL1 SL3

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Monitor type select color

JP1

Closed

 

Monitor type select monochrome

JP1

Open

CMOS memory normal operation

JP2

Pins 2 & 3 closed

 

CMOS memory clear

JP2

Pins 1 & 2 closed

Factory configured - do not alter

JP7

Closed

Factory configured - do not alter

JP31

Pins 2 & 3 closed

DRAM CONFIGURATION 1

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(4) 256K x 9

None

None

None

2MB

(4) 256K x 9

(1) 256K x 36

None

None

4MB

(4) 1M x 9

None

None

None

4MB

(4) 256K x 9

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

5MB

(4) 256K x 9

(1) 1M x 36

None

None

6MB

(4) 256K x 9

(1) 256K x 36

(1) 1M x 36

None

8MB

(4) 1M x 9

(1) 1M x 36

None

None

8MB

(4) 1M x 9

None

(1) 1M x 36

None

10MB

(4) 256K x 9

(1) 256K x 36

(1) 1M x 36

(1) 1M x 36

12MB

(4) 1M x 9

None

(1) 1M x 36

(1) 1M x 36

16MB

(4) 4M x 9

None

None

None

16MB

(4) 1M x 9

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

17MB

(4) 256K x 9

(1) 4M x 36

None

None

20MB

(4) 1M x 9

(1) 4M x 36

None

None

20MB

(4) 1M x 9

None

(1) 4M x 36

None

32MB

(4) 4M x 9

(1) 4M x 36

None

None

64MB

(4) 4M x 9

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

80MB

(4) 4M x 9

(1) 16M x 36

None

None

96MB

(4) 4M x 9

(1) 16M x 36

(1) 4M x 36

None

112MB

(4) 4M x 9

(1) 16M x 36

(1) 4M x 36

(1) 4M x 36

DRAM CONFIGURATION 2

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

None

(1) 256K x 36

None

None

4MB

None

(1) 1M x 36

None

None

8MB

None

(1) 1M x 36

(1) 1M x 36

None

12MB

None

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

None

(1) 4M x 36

None

None

20MB

None

(1) 1M x 36

(1) 4M x 36

None

32MB

None

(1) 4M x 36

(1) 4M x 36

None

64MB

None

(1) 16M x 36

None

None

80MB

None

(1) 16M x 36

(1) 4M x 36

None

96MB

None

(1) 16M x 36

(1) 4M x 36

(1) 4M x 36

72MB

None

(1) 16M x 36

(1) 1M x 36

(1) 1M x 36

128MB

None

(1) 16M x 36

(1) 16M x 36

None

DRAM JUMPER CONFIGURATION

Configuration

JP5

1

Pins 2 & 3 closed

2

Pins 1 & 2 closed

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

None

(1) 8K x 8

256KB (A)

(4) 32K x 8

(4) 32K x 8

(1) 16K x 8

256KB (B)

(2) 64K x 32

None

(1) 32K x 8

512KB

(4) 128K x 8

None

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP8

JP27

JP28

JP43

JP44

64KB

2 & 3

Open

Open

Open

1 & 2

128KB

1 & 2

Closed

Open

Open

1 & 2

256KB (A)

2 & 3

Closed

Closed

Open

2 & 3

256KB (B)

2 & 3

Closed

Closed

Open

1 & 2

512KB

1 & 2

Closed

Closed

Closed

1 & 2

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION

Speed

JP16

JP17

JP18

25MHz

Open

Open

Open

33MHz

Open

Closed

Closed

40MHz

Open

Closed

Open

50iMHz

Open

Open

Open

50MHz

Open

Open

Closed

66iMHz

Open

Closed

Closed

100iMHz

Open

Closed

Closed

CPU TYPE SELECTION

Type

JP9

JP11

JP12

JP13

JP15

JP23

JP32

80486SX

Open

1 & 2

Open

Open

Open

2 & 3

Open

80487SX

Open

1 & 2

Open

2 & 3

Open

1 & 2, 3 & 4

Open

80486DX

Open

1 & 2

Open

1 & 2

Open

1 & 2, 3 & 4

Open

CX M6

Closed

2 & 3

2 & 3

Open

Open

2 & 3

1 & 2

CX M7

Closed

2 & 3

2 & 3

1 & 2

Open

1 & 2, 3 & 4

Open

P24C

Open

1 & 2

Open

1 & 2

Open

1 & 2, 3 & 4

Open

P24D

Open

2 & 3

Open

1 & 2

Closed

1 & 2, 3 & 4

2 & 3

P24T

Open

2 & 3

Open

1 & 2

Open

1 & 2, 3 & 4

Open

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (SL/NON-SL CPU)

Type

JP10

JP12

JP20

JP21

SL-enhanced

Open

Open

Open

Open

Non SL-enhanced

Closed

Pins 1 & 2 closed

Closed

Closed

CPU TYPE SELECTION (CX M7)

Type

JP22

All CPU types

Open

CX M7 2x

Closed

CPU TYPE SELECTION (P24D ONLY)

Type

JP19

Write through

Pins 2 & 3 closed

Write back

Pins 1 & 2 closed

CPU MULTIPLIER SELECTION (80486DX4 ONLY)

Multiplier

JP30

2x

Pins 1 & 2 closed

2.5x

Pins 2 & 3 closed

3x

Open

CPU VOLTAGE SELECTION

Voltage

JP29

3.45v

Pins 3 & 5, 4 & 6 closed

5v

Pins 1 & 3, 2 & 4 closed

VL BUS WAIT STATE SELECTION

Setting

JP35

0

Open

1

Closed

VL BUS SPEED SELECTION

Speed

JP33

JP37

<= 33MHz

Pins 2 & 3 closed

Open

>33 MHz

Pins 1 & 2 closed

Closed