MAT48PX (EISA) Motherboard Settings and Configuration

Processor

80486SX/80487SX/80486DX

Processor Speed

16/20/25/33/50MHz

Chip Set

OPTI

Max. Onboard DRAM

256MB

Cache

64/128/256/512KB

BIOS

AMI

Dimensions

350mm x 304mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

IDE LED out

J4

Reset switch

J5 pins 9 & 19

Speaker

J5 pins 1 - 4

IDE LED in

J5 pins 10 & 20

Turbo switch

J5 pins 7 & 17

Power LED & keylock

J5 pins 11 - 15

Turbo LED

J5 pins 8 & 18

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Monitor type select color

JP5

Closed

Monitor type select monochrome

JP5

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

4MB

(4) 1M x 9

NONE

NONE

NONE

8MB

(4) 1M x 9

(4) 1M x 9

NONE

NONE

12MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

NONE

16MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

NONE

NONE

20MB

(4) 4M x 9

(4) 1M x 9

NONE

NONE

24MB

(4) 1M x 9

(4) 1M x 9

(4) 4M x 9

NONE

28MB

(4) 1M x 9

(4) 1M x 9

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

NONE

NONE

36MB

(4) 4M x 9

(4) 4M x 9

(4) 1M x 9

NONE

40MB

(4) 4M x 9

(4) 4M x 9

(4) 1M x 9

(4) 1M x 9

48MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

NONE

52MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

(4) 1M x 9

64MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

64MB

(4) 16M x 9

NONE

NONE

NONE

128MB

(4) 16M x 9

(4) 16M x 9

NONE

NONE

192MB

(4) 16M x 9

(4) 16M x 9

(4) 16M x 9

NONE

256MB

(4) 16M x 9

(4) 16M x 9

(4) 16M x 9

(4) 16M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG (U37)

TAG (U38)

TAG (U55)

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

(1) 16K x 1

(1) 16K x 1

128KB

(4) 32K x 8

NONE

(1) 8K x 8

(1) 16K x 1

(1) 16K x 1

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

(1) 16K x 1

(1) 16K x 1

512KB

(4) 128K x 8

NONE

(1) 32K x 8

(1) 64K x 1

(1) 64K x 1

Notes: If DRAM is £ 32MB, all cache sizes may be installed; if DRAM is > 32MB and £ 64MB,

128, 256, or 512KB cache must be installed; if DRAM is > 64MB and £ 128MB,

256 or 512KB cache must be installed; if DRAM is > 128MB, 512KB cache must be installed.

CACHE JUMPER CONFIGURATION

Size

RNA1 & RNA2

RNB1 & RNB2

RNC1 & RNC2

RND1 & RND2

64KB

Installed

Not installed

Not installed

Not installed

128KB

Not installed

Installed

Not installed

Not installed

256KB

Not installed

Not installed

Installed

Not installed

512KB

Not installed

Not installed

Not installed

Installed

CPU TYPE CONFIGURATION

Type

JP1

JP2

JP3

JP4

80486SX-16MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

80486SX-20MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

80486SX-25MHz

pins 1 & 2

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

80487SX-16MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

80487SX-20MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

80487SX-25MHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

80486DX-25MHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

80486DX-33MHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

80486DX-50MHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

CPU TYPE CONFIGURATION

Type

RNA3

RNB3

RNC3

80486SX-16MHz

Not installed

Not installed

Installed

80486SX-20MHz

Not installed

Not installed

Installed

80486SX-25MHz

Not installed

Not installed

Installed

80487SX-16MHz

Not installed

Not installed

Not installed

80487SX-20MHz

Not installed

Installed

Not installed

80487SX-25MHz

Not installed

Installed

Not installed

80486DX-25MHz

Installed

Not installed

Not installed

80486DX-33MHz

Installed

Not installed

Not installed

80486DX-50MHz

Installed

Not installed

Not installed