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B810C (REV. B)

MECER CORPORATION

B810C (REV. B)

Processor

80386DX/CX486M6/80486SX/80486DX/80486DX2

Processor Speed

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

Chip Set

Unidentified

Max. Onboard DRAM

128MB

Cache

128/256KB

BIOS

AMI

Dimensions

254mm x 218mm

I/O Options

None

NPU Options

80387DX

CONNECTIONS

Purpose

Location

Purpose

Location

Auxiliary keyboard connector

JP1

Turbo LED

JP27 pins 11 - 12

External battery

JP12

Turbo switch

JP27 pins 16 - 17

Power LED & keylock

JP27 pins 1 - 5

Reset switch

JP27 pins 19 - 20

Speaker

JP27 pins 7 - 10

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select monochrome

JP10

pins 1 & 2 closed

 

Monitor type select color

JP10

pins 2 & 3 closed

Factory configured - do not alter

JP17

N/A

Factory configured - do not alter

JP18

N/A

Factory configured - do not alter

JP21

N/A

Factory configured - do not alter

JP22

N/A

Factory configured - do not alter

JP33

pins 1 & 2 closed

Factory configured - do not alter

JP34

pins 2 & 3 closed

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) 256K x 9

(4) 4M x 9

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

64MB

(4) 16M x 9

NONE

65MB

(4) 256K x 9

(4) 16M x 9

68MB

(4) 1M x 9

(4) 16M x 9

80MB

(4) 4M x 9

(4) 16M x 9

128MB

(4) 16M x 9

(4) 16M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

128KB

(4) 32K x 8

NONE

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP24

JP25

128KB

Open

pins 2 & 3 closed

256KB

Closed

pins 1 & 2 closed

CPU TYPE CONFIGURATION

Type

JP2

JP3

JP4

JP11

JP14

JP15

80386DX

2 & 3

1 & 2

2 & 3

1 & 2

1 & 2

1 & 2

CX486M6-33

2 & 3

2 & 3

1 & 2

1 & 2

2 & 3

Open

CX486M6-40

2 & 3

2 & 3

1 & 2

2 & 3

2 & 3

Open

CX486M6-33 (C6)

2 & 3

2 & 3

1 & 2

1 & 2

2 & 3

1 & 2

CX486M6-40 (C6)

2 & 3

2 & 3

1 & 2

2 & 3

2 & 3

1 & 2

80486SX

1 & 2

2 & 3

2 & 3

1 & 2

2 & 3

Open

80486DX-33

1 & 2

2 & 3

2 & 3

1 & 2

2 & 3

1 & 2

80486DX-40

1 & 2

2 & 3

2 & 3

2 & 3

2 & 3

1 & 2

80486DX-50

1 & 2

2 & 3

2 & 3

1 & 2

2 & 3

1 & 2

80486DX2

1 & 2

2 & 3

2 & 3

1 & 2

2 & 3

1 & 2

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP16

JP19

JP28

JP29

JP30

JP31

JP32

80386DX

2 & 3

2 & 3

Closed

Open

Open

Closed

Closed

CX486M6-33

1 & 2

2 & 3

Open

Closed

Closed

Open

Open

CX486M6-40

1 & 2

1 & 2

Open

Closed

Closed

Open

Open

CX486M6-33 (C6)

2 & 3

2 & 3

Open

Open

Open

Closed

Closed

CX486M6-40 (C6)

2 & 3

1 & 2

Open

Open

Open

Closed

Closed

80486SX

1 & 2

2 & 3

Open

Open

Open

Closed

Closed

80486DX-33

2 & 3

2 & 3

Open

Open

Open

Closed

Closed

80486DX-40

2 & 3

1 & 2

Open

Open

Open

Closed

Closed

80486DX-50

2 & 3

2 & 3

Open

Open

Open

Closed

Closed

80486DX2

2 & 3

2 & 3

Open

Open

Open

Closed

Closed

Note: Pins designated should be in the closed position.

CPU SPEED CONFIGURATION

Speed

J1

25MHz

pins 3 & 4 closed

33MHz

pins 1 & 2 closed

40Mhz (80386)

pins 6 & 8 closed

40Mhz (80486)

pins 1 & 2, 3 & 4 closed

50iMHz

pins 3 & 4 closed

50MHz

pins 3 & 4 closed

66iMHz

pins 1 & 2 closed