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386SX Rev. 1

OMNITEL, INC.

386SX Rev. 1

Processor

80386SX

Processor Speed

20/25MHz

Chip Set

OPTI

Max. Onboard DRAM

16MB

Cache

16/32/64KB

BIOS

MR

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80387SX

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J1

Reset switch

JP10

Power LED & keylock

J22

Turbo switch

JP11

Turbo LED

JP8

Speaker

JP21

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Diagnostics enabled

JP9

Closed

 

Diagnostics disabled

JP9

Open

Battery select external

JP13

pins 1 & 2 closed

 

Battery select internal

JP13

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(2) 256K x 9

(2) 256K x 9

NONE

NONE

2MB

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

2MB

(2) 1M x 9

NONE

NONE

NONE

3MB

(2) 256K x 9

(2) 256K x 9

(2) 1M x 9

NONE

4MB

(2) 1M x 9

(2) 1M x 9

NONE

NONE

5MB

(2) 256K x 9

(2) 256K x 9

(2) 1M x 9

(2) 1M x 9

6MB

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

NONE

8MB

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

9MB

(2) 256K x 9

(2) 256K x 9

(2) 4M x 9

NONE

10MB

(2) 1M x 9

(2) 4M x 9

NONE

NONE

12MB

(2) 1M x 9

(2) 1M x 9

(2) 4M x 9

NONE

16MB

(2) 4M x 9

(2) 4M x 9

NONE

NONE

CACHE CONFIGURATION

Size

Bank 0

Bank 1

16KB

(2) 8K x 8

NONE

32KB

(2) 8K x 8

(2) 8K x 8

64KB

(2) 32K x 8

NONE

Note:TAG is factory installed and is not configurable.

CACHE JUMPER CONFIGURATION

Size

JP3

JP4

JP5

JP6

JP7

16KB

1 & 2

1 & 2

1 & 2

Open

Open

32KB

2 & 3

1 & 2

1 & 2

Closed

Open

64KB

2 & 3

2 & 3

2 & 3

Open

Closed

Note: Pins designated should be in the closed position.