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PET48PN

TMC RESEARCH CORPORATION

PET48PN

Processor

80486SX/80487SX/80486DX/ODP487SX/80486DX2

Processor Speed

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

Chip Set

OPTI

Max. Onboard DRAM

128MB

SRAM Cache

64/128/256/512KB

BIOS

AMI

Dimensions

220mm x 240mm

I/O Options

32-bit VESA card slot (2)

NPU Options

None

   

CONNECTIONS

Purpose

Location

Purpose

Location

IDE interface LED

J4

Reset switch

J5 pins 9 and 19

Speaker

J5 pins 1-4

IDE interface LED

J5 pins 10 and 20

Turbo switch

J5 pins 7 and 17

32-bit VESA card (2)

S1 & S2

Turbo LED

J5 pins 8 and 18

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select color

JP5

closed

 

Monitor type select monochrome

JP5

open

Channel ready select normal

JP7

open

 

Channel ready select EXRDY signal generated

JP7

closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

RNE1-RNE5

RNF1-RNF5

4MB

(4) 1M x 9

NONE

NONE

NONE

closed

open

4MB

NONE

NONE

(1) 1M x 36

NONE

open

closed

8MB

(4) 1M x 9

(4) 1M x 9

NONE

NONE

closed

open

8MB

NONE

NONE

(1) 1M x 36

(1) 1M x 36

open

closed

12MB

(4) 1M x 9

(4) 1M x 9

(1) 1M x 36

NONE

closed

open

12MB

(4) 1M x 9

NONE

(1) 1M x 36

(1) 1M x 36

open

closed

16MB

(4) 1M x 9

(4) 1M x 9

(1) 1M x 36

(1) 1M x 36

closed

open

16MB

(4) 4M x 9

NONE

NONE

NONE

closed

open

16MB

NONE

NONE

NONE

NONE

closed

open

20MB

(4) 4M x 9

(4) 1M x 9

(1) 4M x 36

NONE

open

closed

20MB

NONE

NONE

(1) 4M x 36

(1) 1M x 36

open

closed

24MB

(4) 4M x 9

(4) 1M x 9

(1) 1M x 36

NONE

closed

open

28MB

(4) 4M x 9

(4) 1M x 9

(1) 1M x 36

(1) 1M x 36

closed

open

32MB

(4) 4M x 9

(4) 4M x 9

NONE

NONE

closed

open

32MB

NONE

NONE

(1) 4M x 36

(1) 4M x 36

open

closed

36MB

(4) 4M x 9

(4) 4M x 9

(1) 1M x 36

NONE

closed

open

36MB

(4) 4M x 9

NONE

(1) 4M x 36

(1) 4M x 36

open

closed

40MB

(4) 4M x 9

(4) 4M x 9

(1) 1M x 36

(1) 1M x 36

closed

open

40MB

(4) 4M x 9

NONE

(1) 1M x 36

(1) 4M x 36

open

closed

48MB

(4) 4M x 9

(4) 4M x 9

(1) 4M x 36

NONE

closed

open

48MB

(4) 4M x 9

NONE

(1) 4M x 36

(1) 4M x 36

open

closed

52MB

(4) 4M x 9

(4) 1M x 9

(1) 4M x 36

(1) 4M x 36

closed

open

64MB

(4) 4M x 9

(4) 4M x 9

(1) 4M x 36

(1) 4M x 36

closed

open

128MB

(4) 16M x 9

(4) 16M x 9

NONE

NONE

closed

open

SRAM RESISTOR CONFIGURATION

Size

RNA1/RNA2

RNB1/RNB2

RNC1/RNC2

RND1/RND2

64KB

closed

open

open

open

128KB

open

closed

open

open

256KB

open

open

closed

open

512KB

open

open

open

closed

SRAM CONFIGURATION

Size

Cache SRAM

Location

TAG(U43)

TAG(U44 & U55)

64KB

(8) 8K x 8

Banks 0 & 1

(1) 8K x 8

(2) 16K x 1

128KB

(4) 32K x 8

Bank 0

(1) 8K x 8

(2) 16K x 1

256KB

(8) 32K x 8

Banks 0 & 1

(1) 32K x 8

(2) 16K x 1

512KB

(4) 128K x 8

Bank 0

(1) 32K x 8

(2) 64K x 1

CPU JUMPER CONFIGURATION

CPU

RNA3

RNB3

RNC3

80486DX2

closed

open

open

ODP486SX

open

closed

open

80486DX

closed

open

open

80487SX

open

closed

open

80486SX

open

open

closed

CPU SPEED JUMPER CONFIGURATION

CPU

JP2

JP3

JP4

JP8

JP9

W7

W8

W9

W10

20MHz

1 & 2

1 & 2

2 & 3

open

open

open

closed

open

open

25MHz

1 & 2

1 & 2

2 & 3

open

open

open

open

closed

open

33MHz

1 & 2

2 & 3

2 & 3

open

open

closed

open

open

open

40(internal)MHz

1 & 2

1 & 2

2 & 3

open

open

open

closed

open

open

50(internal)MHz

1 & 2

1 & 2

2 & 3

open

open

open

open

closed

open

50MHz

2 & 3

2 & 3

1 & 2

closed

closed

open

open

closed

open

66(internal)MHz

1 & 2

2 & 3

2 & 3

open

open

open

open

open

closed

Note:JP8 and JP9 are VESA bus speed select. W7 - W10 are clock source jumpers.