TANDY/RADIO SHACK

SENSATION! (250-1650)

Processor               80486SX/80487SX/ODP486
Processor Speed         25MHz
Chip Set                Unidentified
Video Chip Set          Unidentified
Maximum Onboard Memory  32MB
Maximum Video Memory    1MB
Cache                   None
BIOS                    Unidentified
Dimensions              394mm x 381mm
I/O Options             CD-ROM interface, floppy drive interface, IDE
                        interface, parallel port, PS/2 mouse port, serial
                        port, VGA feature connector, VGA port, riser slot,
                        audio connector, fax/data modem connector, CD-ROM
                        adapter, modem port MIDI/game port, microphone
                        connector, headphone connector, line out connector
NPU Options             80487SX

[Image]

                                CONNECTIONS

  Purpose                Location      Purpose                Location

  VGA feature               CN1        Serial port           Unidentified
  connector

  Floppy drive              CN2        Parallel port         Unidentified
  interface

  CD audio connector        CN3        MIDI/game port        Unidentified

  Fax/data modem            CN4        Microphone            Unidentified
  connector                            connector

  CD-ROM interface          CN5        Headphone             Unidentified
                                       connector

  CD-ROM adapter            CN6        Line out connector    Unidentified

  IDE interface             CN7        VGA port              Unidentified

  PS/2 mouse port       Unidentified   Riser slot                SL1

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

  »   Factory configured - do not           J9           Unidentified
      alter

  »   Synthesizer IRQ15 enabled             J11             Closed

      Synthesizer IRQ15 disabled            J11              Open

  »   Factory configured - do not           J12          Unidentified
      alter

  »   Monitor type select color             J16             Closed

      Monitor type select monochrome        J16              Open

  »   Factory configured - do not           J17          Unidentified
      alter

  »   Waveform IRQ5 enabled                 J21             Closed

      Waveform IRQ5 disabled                J21              Open

  »   Monitor frequency select             SW1/5              Off
      31.5KHz

      Monitor frequency select 40KHz       SW1/5              On

  »   Factory configured - do not          SW1/6              On
      alter

  »   VGA IRQ9 disabled                    SW1/7              Off

      VGA IRQ9 enabled                     SW1/7              On

  »   On board video enabled               SW1/8              On

      On board video disabled              SW1/8              Off

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

     4MB           None           None           None        (1) 1M x 36

     6MB        (1) 512K x     (1) 512K x     (1) 256K x    (1) 256K x 36
                    36             36             36

     8MB        (1) 512K x     (1) 512K x     (1) 512K x    (1) 512K x 36
                    36             36             36

     8MB           None           None       (1) 1M x 36     (1) 1M x 36

     8MB           None           None           None        (1) 2M x 36

     10MB      (1) 1M x 36    (1) 1M x 36     (1) 256K x    (1) 256K x 36
                                                  36

     12MB      (1) 1M x 36    (1) 1M x 36     (1) 512K x    (1) 512K x 36
                                                  36

     12MB          None       (1) 1M x 36    (1) 1M x 36     (1) 1M x 36

     16MB      (1) 1M x 36    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36

     16MB          None           None       (1) 2M x 36     (1) 2M x 36

     18MB      (1) 2M x 36    (1) 2M x 36     (1) 256K x    (1) 256K x 36
                                                  36

     20MB      (1) 2M x 36    (1) 2M x 36     (1) 512K x    (1) 512K x 36
                                                  36

     24MB      (1) 2M x 36    (1) 2M x 36    (1) 1M x 36     (1) 1M x 36

     32MB      (1) 2M x 36    (1) 2M x 36    (1) 2M x 36     (1) 2M x 36

                        VIDEO MEMORY CONFIGURATION

            Note: Board accepts 512KB/1MB of video memory. 512KB is
            factory installed and is not configurable. The size of the
            chips are unidentified. The number of banks is unidentified.

                  VIDEO RESOLUTION SELECTION (800 X 600)

         Frequency                   SW1/1                  SW1/2

  »           56Hz                    Off                    Off

              60Hz                    Off                     On

              72Hz                    On                     Off

              56Hz                    On                      On

                  VIDEO RESOLUTION SELECTION (1024 X 768)

             Frequency                    SW1/3               SW1/4

  »         56Hz interlaced                Off                 Off

          60Hz non-interlaced              Off                 On