J-BOND COMPUTER SYSTEMS CORPORATION

486-33/25/20E

Processor

80486SX/80487SX/80486DX/80486DX2/P24T

Processor Speed

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

Chip Set

OPTI

Video Chip Set

None

Maximum Onboard Memory

32MB

Maximum Video Memory

None

Cache

None

BIOS

AMI/Award

Dimensions

254mm x 218mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J1

Turbo switch

J5

Reset switch

J2

Speaker

J6

Turbo LED

J3

Power LED & keylock

J7

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Turbo enabled (selectable with turbo switch on case)

X4

Pins 1 & 2 closed

 

Turbo enabled (selectable through keyboard CTRL, ALT +/-

X4

Pins 2 & 3 closed

 

Turbo enabled (continuous turbo mode)

X4

Open

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

32MB

(4) 4M x 9

(4) 4M x 9

CPU TYPE SELECTION

Type

W1

W2

W3

W4

W5

80486SX

Open

Open

Open

Closed

Open

80487SX

Open

Closed

Closed

Open

Closed

80486DX

Closed

Open

Closed

Open

Closed

80486DX2

Closed

Open

Closed

Open

Closed

P24T

Open

Closed

Closed

Open

Closed