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OPTI 386SX

ZIDA TECHNOLOGIES, LTD.

OPTI 386SX

Processor

80386SX/CX486SLC

Processor Speed

16/20/25MHZ

Chip Set

OPTI

Max. Onboard DRAM

16MB

Cache

16/32/64/128KB

BIOS

AMI

Dimensions

170mm x 220mm

I/O Options

32-bit proprietary local bus slot

NPU Options

80387SX

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J1

Turbo LED

J15

Power LED & Keylock

J12

Turbo Switch

J16

Reset Switch

J13

32-bit proprietary local bus slot

S1

Speaker

J14

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Local bus signal select TTL level

J2

pins 1 & 2 closed

 

Local bus signal select Tri state level

J2

pins 2 & 3 closed

Monitor type select color

J3

Open

 

Monitor type select monochrome

J3

Closed

CPU type select Intel/AMD

J4 & J11

Open

 

CPU type select Cyrix

J4 & J11

Closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

512KB

(2) 256K x 9

NONE

1MB

(2) 256K x 9

(2) 256K x 9

1.5MB

(2) 1M x 9

(2) 256K x 9

2MB

(2) 1M x 9

NONE

4MB

(2) 1M x 9

(2) 1M x 9

8MB

(2) 4M x 9

NONE

8.5MB

(2) 4M x 9

(2) 256K x 9

10MB

(2) 4M x 9

(2) 1M x 9

16MB

(2) 4M x 9

(2) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

Tag (U26)

Tag (U27)

16KB

(2) 8K x 8

None

(1) 8K x 8

NONE

32KB

(2) 8K x 8

(2) 8K x 8

(1) 8K x 8

NONE

64KB

(2) 32K x 8

NONE

(1) 8K x 8

NONE

128KB

(2) 32K x 8

(2) 32K x 8

(1) 8K x 8

(1) 8K x 8

CACHE JUMPER CONFIGURATION

Size

J5

J6

J7

J8

J9

J10

16KB

pins 2 & 3 closed

pins 2 & 3 closed

Open

Open

Open

Open

32KB

pins 2 & 3 closed

pins 2 & 3 closed

Open

Closed

Open

Open

64KB

pins 1 & 2 closed

pins 2 & 3 closed

Closed

Closed

Closed

Open

128KB

pins 1 & 2 closed

pins 1 & 2 closed

Closed

Closed

Closed

Closed