AT & T

AT & T GLOBALYST 510

AT & T GLOBALYST 515

Processor       SL80486SX/SL80486SX2/SL80486DX2/SL80486DX4/P24T/
                486Overdrive
Processor Speed 25/33/50(internal)/66(internal)100(internal)MHz
Chip Set        Unidentified
Video Chip Set  Cirrus Logic
Maximum Onboard 64MB
Memory
Maximum Video   1MB
Memory
Cache           256KB
BIOS            IBM
Dimensions      330mm x 218mm
I/O Options     Floppy drive interface, IDE interface, parallel port, PS/2
                mouse port, serial ports (2), VGA graphics pass through
                connector, VGA port, riser slot, cache slot
NPU Options     None

[Image]

                                CONNECTIONS

  Purpose               Location     Purpose                   Location

  PS/2 mouse port         CN1        Floppy drive interface      J10

  Serial port 1           CN2        VGA graphics                J14
                                     pass-through connector

  Serial port 2           CN3        Front panel LEDS            J15

  Parallel port           CN4        Speaker                     J16

  VGA port                CN5        Riser slot                  SL1

  IDE interface            J8        Cache slot                  SL2

                        USER CONFIGURABLE SETTINGS

               Function                    Label           Position

  »   CMOS memory normal operation          J1         Pins 2 & 3 closed

      CMOS memory clear                     J1         Pins 1 & 2 closed

      Jumper information unavailable        J3V          Unidentified

      On board video enabled               SW1/1              On

      On board video disabled              SW1/1              Off

  »   Monitor type select color            SW1/2              On

      Monitor type select monochrome       SW1/2              Off

  Note: If a VGA processor is enabled, SW1/2 has no function. If the VGA
  controller is disabled, and a CGA or MDA controller is installed, set
  the switch to the above setting.

                     DRAM CONFIGURATION

     Size          Bank 0         Bank 1         Bank 2

      4MB        (1) 1M x 36       None           None

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

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

     16MB        (1) 4M x 36       None           None

     20MB        (1) 1M x 36    (1) 4M x 36       None

     20MB        (1) 4M x 36    (1) 1M x 36       None

     24MB        (1) 1M x 36    (1) 4M x 36    (1) 1M x 36

     24MB        (1) 1M x 36    (1) 1M x 36    (1) 4M x 36

     24MB        (1) 4M x 36    (1) 1M x 36    (1) 1M x 36

     32MB        (1) 4M x 36    (1) 4M x 36       None

     36MB        (1) 4M x 36    (1) 4M x 36    (1) 1M x 36

     36MB        (1) 1M x 36    (1) 4M x 36    (1) 4M x 36

     36MB        (1) 4M x 36    (1) 1M x 36    (1) 4M x 36

     40MB        (1) 1M x 36    (1) 1M x 36    (1) 8M x 36

     48MB        (1) 4M x 36    (1) 4M x 36    (1) 4M x 36

     52MB        (1) 1M x 36    (1) 4M x 36    (1) 8M x 36

     64MB        (1) 4M x 36    (1) 4M x 36    (1) 8M x 36

  Note: The location of banks 0, 1, & 2 are unidentified.

                CACHE CONFIGURATION

           Size                      SL2

           None                 Not installed

          256KB            256KB module installed

                        VIDEO MEMORY CONFIGURATION

          Size                    Bank 0                   Bank 1

          512KB                   512KB                     None

           1MB                    512KB                    512KB

  Note: Bank 0 is factory installed and is not configurable. The size of
  the upgrade ships are unidentified.

                  CPU SPEED SELECTION

           Speed                        JK1

           25MHz             Pins 1 & 2, 5 & 6 closed

           33MHz             Pins 3 & 4, 5 & 6 closed

           50iMHz            Pins 1 & 2, 5 & 6 closed

           66iMHz            Pins 3 & 4, 5 & 6 closed

          100iMHz            Pins 3 & 4, 5 & 6 closed

                            CPU TYPE SELECTION

       Type             JC1            JC2          JC3           JC4

     SL80486SX       Pins 2 & 3     Pins 2 & 3     Closed       Closed
                       closed        closed

     SL80486DX       Pins 1 & 2     Pins 1 & 2      Open         Open
                       closed        closed

    SL80486DX2       Pins 1 & 2     Pins 1 & 2      Open         Open
                       closed        closed

    SL80486DX4       Pins 1 & 2     Pins 1 & 2      Open         Open
                       closed        closed

   486Overdrive      Pins 1 & 2     Pins 1 & 2      Open         Open
                       closed        closed