TEXAS MICROSYSTEMS, INC.

P575/90

Processor

Pentium

Processor Speed

90/100MHz

Chip Set

Intel

Video Chip Set

None

Maximum Onboard Memory

128MB

Maximum Video Memory

None

Cache

256/512KB

BIOS

Phoenix

Dimensions

337mm x 122mm

I/O Options

Floppy drive interface, IDE interface, SCSI interface, parallel port, serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

SCSI interface

CN1

Serial port 1

CN6

IDE interface

CN2

Parallel port

CN7

Floppy drive interface

CN3

AT keyboard connector

CN8

Optional keyboard connector

CN4

Hard drive LED

JP15

Serial port 2

CN5

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Cache type select write back

JP1

Open

 

Cache type select write through

JP1

Closed

»

Pipeline mode enabled

JP2

Closed

 

Pipeline mode disabled

JP2

Open

»

Watchdog timer enabled

JP4

Pins 1 & 2 closed

 

Watchdog timer disabled

JP4

Pins 2 & 3 closed

»

Factory configured - do not alter

JP5

Pins 2 & 3 closed

»

Factory configured - do not alter

JP6

Pins 2 & 3 closed

»

Factory configured - do not alter

JP7

Pins 2 & 3 closed

»

Factory configured - do not alter

JP8

Pins 2 & 3 closed

»

Cache type select burst

JP10

Pins 2 & 3 closed

 

Cache type select standard

JP10

Pins 1 & 2 closed

»

SCSI speed select 40MHz

JP13

Pins 1 & 2 closed

 

SCSI speed select 33MHz

JP13

Pins 2 & 3 closed

»

PS/2 IRQ 12 enabled

JP14

Pins 2 & 3 closed

 

Next Step OS used

JP14

Pins 1 & 2 closed

»

Monitor type select color

SW1/1

On

 

Monitor type select monochrome

SW1/1

Off

»

Flash BIOS enabled

SW1/2

Off

 

Flash BIOS disabled

SW1/2

On

»

CMOS memory normal operation

SW1/3

Off

 

CMOS memory clear

SW1/3

On

»

Factory configured - do not alter

SW1/4

Unidentified

DRAM CONFIGURATION

Size

Bank 0

Bank 1

8MB

(2) 1M x 36

None

16MB

(2) 2M x 36

None

16MB

(2) 1M x 36

(2) 1M x 36

24MB

(2) 2M x 36

(2) 1M x 36

32MB

(2) 4M x 36

None

32MB

(2) 2M x 36

(2) 2M x 36

40MB

(2) 4M x 36

(2) 1M x 36

48MB

(2) 4M x 36

(2) 2M x 36

64MB

(2) 8M x 36

None

64MB

(2) 4M x 36

(2) 4M x 36

72MB

(2) 8M x 36

(2) 1M x 36

96MB

(2) 8M x 36

(2) 4M x 36

128MB

(2) 8M x 36

(2) 8M x 36

CACHE CONFIGURATION

Note: The location of the cache is unidentified.

CACHE JUMPER CONFIGURATION

Size

JP9

JP11

JP12

None

N/A

Pins 1 & 2 closed

Pins 1 & 2 closed

256KB

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

512KB

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 2 & 3 closed

CPU SPEED SELECTION

Speed

JP3

1/2

Closed

2/3

Open