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G486ULB

JOINDATA SYSTEMS, INC.

G486ULB

Processor

80486SX/80487SX/80486DX/ODP486SX/80486DX2

Processor Speed

20/25/33/50(internal)/50/66(internal)MHz

Chip Set

EFAR

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit local bus card slots (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Reset switch

J9

Power LED & keylock

J13

Turbo LED

J10

External battery

J14

Turbo switch

J11

32-bit local bus card slots

S15 & S16

Speaker

J12

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

J18

Closed

Factory configured - do not alter

W10

N/A

Monitor type select color

JP15

pins 1 & 2 closed

 

Monitor type select monochrome

JP15

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

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 (U38, U39)

TAG (U40)

Dirty(U48)

64KB

(4) 8K x 8

(4) 8K x 8

(2) 16K x 4

NONE

(1) 16K x 4

64KB

(4) 8K x 8

(4) 8K x 8

NONE

(1) 8K x 8

(1) 16K x 4

128KB

(4) 32K x 8

NONE

(2) 16K x 4

NONE

(1) 16K x 4

128KB

(4) 32K x 8

NONE

NONE

(1) 8K x 8

(1) 16K x 4

256KB

(4) 32K x 8

(4) 32K x 8

(2) 16K x 4

NONE

(1) 16K x 4

256KB

(4) 32K x 8

(4) 32K x 8

NONE

(1) 32K x 8

(1) 16K x 4

CACHE JUMPER CONFIGURATION

Size

W14

W15

W16

W17

W18

64KB

1 & 2

Open

1 & 2

1 & 2

2 & 3

128KB

2 & 3

1 & 2

1 & 2

2 & 3

2 & 3

256KB

1 & 2

2 & 3

2 & 3

2 & 3

2 & 3

Note:Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

OSC1

W11

W12

W13

80486SX-20

20MHz

Open

Open

pins 1 & 2 closed

80486SX-25

25MHz

Open

Open

pins 1 & 2 closed

80486DX-25

25MHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

80486DX-33

33MHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

80486DX-50

50MHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

80486DX2-50

25MHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

80486DX2-66

33MHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed