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PAT48PX (LOCAL BUS)

TMC RESEARCH CORPORATION

PAT48PX (LOCAL BUS)

Processor

80486SX/80487SX/80486DX/ODP486SX/80486DX2

Processor Speed

20/25/33/40(internal)/50/66(internal)MHz

Chip Set

OPTI

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit external memory card slot, 32-bit local bus card slots (2)

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J10

IDE LED in

J23 pins 10 & 20

Speaker

J23 pins 1 - 4

Power LED & keylock

J23 pins 11 - 15

Turbo switch

J23 pins 7 & 17

IDE LED out

JP12

Turbo LED

J23 pins 8 & 18

32-bit local bus card

LB1 & LB2

Reset switch

J23 pins 9 & 19

32-bit external memory card

S1

Note:Local bus slots may also be used as normal ISA slots.

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select color

JP1

Closed

 

Monitor type select monochrome

JP1

Open

CMOS memory normal operation (internal battery)

JP2

pins 2 & 3 closed

 

CMOS memory normal operation (external battery at J4)

JP2

Open

 

CMOS memory clear

JP2

pins 1 & 2 closed

Bus speed select CLKIN/4

JP3

Open

 

Bus speed select CLKIN/6

JP3

Closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

5MB

(4) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG (U33)

TAG (U34)

Resistor Installed

64KB

(4) 8K x 8

(4) 8K x 8

(1) 4K x 1

(1) 8K x 8

RND

64KB

(4) 8K x 8

(4) 8K x 8

(1) 16K x 1

(1) 8K x 8

RND

64KB

(4) 8K x 8

(4) 8K x 8

(1) 64K x 1

(1) 8K x 8

RND

128KB

(4) 32K x 8

NONE

(1) 16K x 1

(1) 8K x 8

RNF

128KB

(4) 32K x 8

NONE

(1) 64K x 1

(1) 8K x 8

RNF

256KB

(4) 32K x 8

(4) 32K x 8

(1) 16K x 1

(1) 32K x 8

RNE

256KB

(4) 32K x 8

(4) 32K x 8

(1) 64K x 1

(1) 32K x 8

RNE

Notes: If DRAM is £ 16MB, all cache sizes may be installed, if DRAM is > 16MB and £ 32MB,

128 or 256KB cache must be installed, if DRAM > 32MB, 256KB cache must be installed.

(Memory over 32MB would be installed on the proprietary external memory card.)

CPU TYPE CONFIGURATION

Type

RNA

RNB

RNC

80486SX

Not installed

Not installed

Installed

80487SX

Not installed

Installed

Not installed

ODP486SX

Not installed

Installed

Not installed

80486DX

Installed

Not installed

Not installed

80486DX2

Installed

Not installed

Not installed