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

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                  Location

  SCSI interface             CN1       Serial port 1              CN6

  IDE interface              CN2       Parallel port              CN7

  Floppy drive               CN3       AT keyboard connector      CN8
  interface

  Optional keyboard          CN4       Hard drive LED             JP15
  connector

  Serial port 2              CN5

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

  »   Cache type select write back          JP1              Open

      Cache type select write               JP1             Closed
      through

  »   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           JP5        Pins 2 & 3 closed
      alter

  »   Factory configured - do not           JP6        Pins 2 & 3 closed
      alter

  »   Factory configured - do not           JP7        Pins 2 & 3 closed
      alter

  »   Factory configured - do not           JP8        Pins 2 & 3 closed
      alter

  »   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          SW1/4         Unidentified
      alter

             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      Pins 1 & 2 closed
                                          closed

      256KB           Pins 1 & 2        Pins 2 & 3      Pins 1 & 2 closed
                       closed             closed

      512KB           Pins 2 & 3        Pins 2 & 3      Pins 2 & 3 closed
                       closed             closed

  CPU SPEED SELECTION

   Speed        JP3

    1/2        Closed

    2/3         Open