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IAT48PX

TMC RESEARCH CORPORATION

IAT48PX

Processor

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

Processor Speed

20/25/33/50 (Internal)/50/60 (Internal)MHz

Chip Set

OPTI

Max. onboard DRAM

32MB

SRAM Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

Floppy drive interface, floppy drive interface, parallel ports (2), serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J1A

Serial port (COM1) DB-9

J6

Power LED & keylock

J1B

Parallel port DP-9

J7

Not used

J1C

10-pin header serial port (COM2)

J8

Turbo switch

J1D

10-pin header serial port (COM1)

J9

Turbo LED

J1E

Parallel port 10-pin header

J10

Reset switch

J1F

No function

J17

IDE interface LED

J1G, J2

Floppy drive interface

J18

External battery

J4

IDE interface

J19

Serial port (COM2) DB-9

J5

16-bit riser card

S1

Note: Depending on the specifications, the IAT48PX will have either 10-pin header serial ports or the DB-9 serial ports.

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CMOS memory normal operation (Internal Battery)

JP1

pins 2 & 3 closed

 

CMOS memory normal operation (External Battery)

JP1

Open

 

CMOS memory clear

JP1

pins 1 & 2 closed

Monitor type select color

JP2

Closed

 

Monitor type select monochrome

JP2

Open

Floppy drive interface (J18) enabled

JP3

Closed

 

Floppy drive interface (J18) disabled

JP3

Open

IDE interface enabled

JP4 & JP5

Closed

 

IDE interface disabled

JP4 & JP5

Open

I/O bus speed select ATCLK/4

JP6

Open

 

I/O bus speed select ATCLK/6

JP6

Closed

CPU clock select single frequency

JP7

pins 1 & 2 closed

 

CPU speed select dual frequency

JP7

pins 2 & 3 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) 1M x 9

(4) 256K 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

U45

U44 (TAG)

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

(1) 4K x 4

128KB

(4) 32K x 8

None

(1) 8K x 8

(1) 4K x 4

256KB

(4) 32K x 8

(4) 32K x 8

(1) 8K x 8

(1) 4K x 4

CACHE RN SOCKET CONFIGURATION

Size

RND

RNE

RNF

64KB

Installed

Not installed

Not installed

128KB

Not installed

Installed

Not installed

256KB

Not installed

Not installed

Installed

SERIAL PORT CONFIGURATION

COM1

COM2

RNH

COM1

COM2

Installed on 1, 2, 3, and 4

 

COM1

Disabled

Installed on 2, 3, 4, and 5

 

Disabled

COM2

Installed on 3, 4, 5, and 6

 

Disabled

Disabled

Installed on 4, 5, 6, and 7

PARALLEL PORT CONFIGURATION

LPT

Address

RNG

1

3BCh - 3BEh

Installed on 2, 3, 4, and 5

 

2

378h - 37Fh

Installed on 1, 2, 3, and 4

 

Disabled

N/A

Installed on 4, 5, 6, and 7

CPU TYPE CONFIGURATION

Type

RNA

RNB

RNC

80486SX

Not installed

Not installed

Installed

80487SX

Not installed

Installed

Not installed

80486DX

Installed

Not installed

Not installed

ODP486SX

Not installed

Installed

Not installed

80486DX2

Installed

Not installed

Not installed