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486 CACHE

J-BOND COMPUTER SYSTEMS CORPORATION

486 CACHE

Processor

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

Processor Speed

20/25/33/40/50(internal)/50/66(internal)MHz

Chip Set

ETEQ

Max. Onboard DRAM

32MB

Cache

64/256KB

BIOS

AMI

Dimensions

221mm x 254mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

BATT

Reset switch

RST

Power LED & keylock

KEYLC

Speaker

SPK

Turbo LED

LED

Turbo switch

TBS

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CPU speed select switchable at keyboard

JP1

Closed

 

CPU speed select switchable at turbo switch

JP1

Open

Battery type select internal

JP7

Closed

 

Battery type select external

JP7

Open

CPU speed select iOSC/2

JP50

pins 2 & 3 closed

 

CPU speed select iOSC/1

JP50

pins 1 & 2 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) 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

TAG

64KB

(8) 8K x 8

(1) 8K x 8

256KB

(8) 32K x 8

(1) 32K x 8

CACHEJUMPER CONFIGURATION

Size

JP2

JP3

JP4

JP5

64KB

Open

pins 1 & 2 closed

Open

pins 1 & 2 closed

256KB

Closed

pins 2 & 3 closed

Closed

pins 2 & 3 closed

CPU TYPE CONFIGURATION

Type

JX1

JX2

JX3

JX4

JX5

80486SX

Open

Open

Open

Closed

Open

80487SX

Open

Closed

Closed

Open

Closed

ODP486SX

Open

Closed

Closed

Open

Closed

80486DX

Closed

Open

Closed

Open

Closed

80486DX2

Closed

Open

Closed

Open

Closed