MAGUS DATA TECHNOLOGY, INC.

S486L12 EDITION 1.1

Processor        80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive
Processor Speed  25/33/50(internal)/66(internal)MHz
Chip Set         VLSI
Max. Onboard DRAM128MB
Cache            None
BIOS             Unidentified
Dimensions       330mm x 218mm
I/O Options      32-bit VESA local bus slots (2)
NPU Options      None

[Image]

                                CONNECTIONS

  Purpose                 Location     Purpose                  Location

  Turbo switch               J1        Speaker                     J4

  Turbo LED                  J2        Power LED & keylock         J5

  Reset switch               J3        32-bit VESA local bus   SL1 & SL2
                                       slots

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   Power good signal detect from            JP1           pins 1 & 2
      power supply                                            closed

      Power good signal detect from            JP1           pins 2 & 3
      board                                                   closed

  »   Monitor type select CGA/EGA/VGA          JP2           pins 1 & 2
                                                              closed

      Monitor type select MDA/EGA/VGA          JP2           pins 2 & 3
                                                              closed

              DRAM CONFIGURATION

      Size          Bank 0          Bank 1

      1MB         (4) 256K x 9       NONE

      2MB         (4) 256K x 9   (4) 256K x 9

      4MB         (4) 1M x 9         NONE

      5MB         (4) 1M x 9     (4) 256K x 9

      8MB         (4) 1M x 9      (4) 1M x 9

      16MB        (4) 4M x 9         NONE

      17MB        (4) 4M x 9     (4) 256K x 9

      20MB        (4) 4M x 9      (4) 1M x 9

      32MB        (4) 4M x 9      (4) 4M x 9

      64MB        (4) 16M x 9        NONE

      65MB        (4) 16M x 9    (4) 256K x 9

      68MB        (4) 16M x 9     (4) 1M x 9

      80MB        (4) 16M x 9     (4) 4M x 9

     128MB        (4) 16M x 9    (4) 16M x 9

                          CPU TYPE CONFIGURATION

        Type                JP4              JP5               JP6

       80486SX           pins 2 & 3       pins 2 & 3        pins 2 & 3
                          closed            closed            closed

       80487SX           pins 1 & 2       pins 1 & 2        pins 1 & 2
                          closed            closed            closed

       80486DX           pins 2 & 3       pins 1 & 2        pins 1 & 2
                          closed            closed            closed

      80486DX2           pins 2 & 3       pins 1 & 2        pins 1 & 2
                          closed            closed            closed

  Pentium Overdrive      pins 1 & 2       pins 1 & 2        pins 1 & 2
                          closed            closed            closed

         CPU SPEED CONFIGURATION

        Speed                JP3

        25MHz         pins 1 & 2 closed

        33MHz         pins 2 & 3 closed

       50iMHz         pins 1 & 2 closed

       66iMHz         pins 2 & 3 closed

                       MISCELLANEOUS TECHNICAL NOTE

            Note:This board will handle a 80486DX4 with an adapter
            supplied from Magus. The settings for this adapter are
            unidentified by the manufacturer.