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KMX-16A/-20A/-25A 386SX SYSTEM BOARD

UNIDENTIFIED

KMX-16A/-20A/-25A 386SX SYSTEM BOARD

Processor

80386SX

Processor Speed

16/20/25MHz

Chip Set

C&T

Max. Onboard DRAM

16MB

Cache

32KB (with external cache card)

BIOS

AMI/C&T

Dimensions

220mm x 220mm

I/O Options

None

NPU Options

80387SX

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J1

External Battery

J13

Turbo switch

J7

Reset switch

J14

Turbo LED

J8

CD-10 32KB External Cache Card

SL1

Power LED & keylock

J10

 

 

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Factory configured-do not alter

J2

N/A

Turbo mode enabled

J9

Closed

 

Turbo mode disabled

J9

Open

Monitor type select color

J12

pins 1 & 2 closed

 

Monitor type select monochrome

J12

pins 2 & 3 closed

Cache card enabled

W1

pins 1 & 2 closed

 

Cache card disabled

W1

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

512KB

(2) 256K x 9

NONE

NONE

NONE

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

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

8MB

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

16MB

(2) 4M x 9

(2) 4M x 9

NONE

NONE

CACHE CONFIGURATION

Size

Bank 0

Bank 1

32KB(Two Way Set)

(4) 8KB x 8

NONE

32KB(Direct Map)

(4) 8KB x 8

NONE

32KB(Direct Map)

NONE

(4) 16KB x 4

CACHE JUMPER CONFIGURATION

Size

J2

J3

J4

J5

J6

32KB(Two Way Set)

1 & 2

1 & 2

1 & 2

1 & 2

1 & 2

32KB(Direct Map)

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

32KB(Direct Map)

2 & 3

2 & 3

2 & 3

2 & 3

2 & 3

Note: Pins designated should be in the closed position.