
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

