...because we can't all be on the bleeding edge...





386SX-20/25 PLUS (Model 320)

CACHE COMPUTERS, INC.

386SX-20/25 PLUS (Model 320)

   

Processor

80386SX

Processor Speed

20/25MHz

Chip Set

OPTI

Max. Onboard DRAM

16MB

Cache

64KB

BIOS

AMI/Cache/Phoenix

Dimensions

330mm x 218mm

I/O Options

Parallel port, serial ports (2), game port, floppy drive interface, IDE interface

NPU Options

80387SX

CONNECTIONS

Purpose

Location

Purpose

Location

Auxiliary keyboard

J2

COM2 at 2F8-2FFh

P2

External battery

JP1

Game port at 201h

P3

IDE LED

JP8

Parallel port at 378-37Fh

P5

Turbo LED

JP12

IDE interface

P6

Speaker

JP13

Floppy drive interface

P7

Power LED & keylock

JP14

Reset switch

SW1

COM1 at 3F8-3FFh

P1

Turbo switch

SW2

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Parallel port enabled

JP3

pins 1 & 2 closed

 

Parallel port disabled

JP3

pins 2 & 3 closed

IRQ 7 enabled

JP5

Closed

 

IRQ 7 disabled

JP5

Open

IRQ 3 enabled

JP6

Closed

 

IRQ 3 disabled

JP6

Open

IRQ 4 enabled

JP7

Closed

 

IRQ 4 disabled

JP7

Open

Monitor type set color (AMI BIOS)

JP9

Closed

 

Monitor type set monochrome (AMI BIOS)

JP9

Open

Security enabled (MR BIOS)

JP9

Closed

 

Security disabled (MR BIOS)

JP9

Open

CMOS memory normal operation

JP11

Open

 

CMOS memory clear

JP11

Closed

CPU speed switchable from keyboard

JP15

pins 1 & 2 closed

 

CPU speed switchable from turbo switch

JP15

pins 2 & 3 closed

IDE interface enabled

SW3/1

Off

 

IDE interface disabled

SW3/1

On

Floppy interface enabled

SW3/2

Off

 

Floppy interface disabled

SW3/2

On

Factory configured - do not alter

SW3/3

N/A

Floppy interface select primary (only with 2 controllers)

SW3/9

On

 

Floppy interface select secondary (only with 2 controllers)

SW3/9

Off

Configuration select manual

SW3/10

On

 

Configuration select automatic

SW3/10

Off

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) 1M x 9

NONE

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

64KB

(8) 8K x 8

Note:The location of the cache is unidentified.

PARALLEL PORT CONFIGURATION

Setting

SW3/7

SW3/8

LPT2

Off

Off

 

LPT1

Off

On

 

LPT3

On

Off

 

Disabled

On

On

SERIAL PORT CONFIGURATION

Serial port (P1)

Serial port (P2)

SW3/4

SW3/5

SW3/6

COM1

COM2

Off

Off

Off

Disabled

COM2

Off

Off

On

COM1

Disabled

Off

On

Off

Disabled

Disabled

Off

On

On

COM2

COM1

On

Off

Off

Disabled

COM1

On

Off

On

COM2

Disabled

On

On

Off

Disabled

Disabled

On

On

On