GIGA-BYTE TECHNOLOGY CO., INC.

GA-586AT

Processor              Pentium
Processor Speed        75/90/100MHz
Chip Set               UMC
Max. Onboard DRAM      128MB
Cache                  256/512KB
BIOS                   Award
Dimensions             280mm x 220mm
I/O Options            32-bit PCI slots (3), floppy drive interface, green
                       PC connector, IDE interfaces (2), parallel port,
                       serial ports (2)
NPU Options            None

[Image]

                                CONNECTIONS

  Purpose                    Location    Purpose                Location

  Serial port 1                CN1       Green PC LED              J5

  Serial port 2                CN2       Reset switch              J6

  Floppy drive interface       CN3       Turbo switch              J7

  Parallel port                CN4       Turbo LED                 J8

  Chassis fan power             J1       Speaker                   J9

  IDE interface (primary)       J2       Power LED & keylock      J10

  IDE interface                 J3       32-bit PCI slots       PC1 - PC3
  (secondary)

  Green PC connector            J4

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

  »   CPU type select VR or standard          JP2              Open
      CPU

      CPU type select VRE CPU                 JP2             Closed

  »   Factory configured - do not             JP12             N/A
      alter

                        DRAM CONFIGURATION

      Size            Bank 0           Bank 1          Bank 2

       2MB        (2) 256K x 36         NONE            NONE

       4MB        (2) 256K x 36    (2) 256K x 36        NONE

       4MB        (2) 512K x 36         NONE            NONE

       6MB        (2) 256K x 36    (2) 256K x 36    (2) 256K x 36

       6MB        (2) 512K x 36    (2) 256K x 36        NONE

       8MB        (2) 512K x 36    (2) 256K x 36    (2) 256K x 36

       8MB         (2) 1M x 36          NONE            NONE

      10MB        (2) 256K x 36     (2) 1M x 36         NONE

      10MB         (2) 1M x 36     (2) 256K x 36        NONE

      12MB        (2) 512K x 36     (2) 1M x 36         NONE

      12MB         (2) 1M x 36     (2) 256K x 36    (2) 256K x 36

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

      16MB         (2) 2M x 36          NONE            NONE

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

      18MB         (2) 2M x 36     (2) 256K x 36        NONE

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

      20MB         (2) 2M x 36     (2) 256K x 36    (2) 256K x 36

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

      24MB         (2) 2M x 36      (2) 1M x 36         NONE

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

      32MB         (2) 4M x 36          NONE            NONE

      34MB        (2) 256K x 36     (2) 4M x 36         NONE

      34MB         (2) 4M x 36     (2) 256K x 36        NONE

      36MB        (2) 512K x 36     (2) 4M x 36         NONE

      36MB         (2) 4M x 36     (2) 256K x 36    (2) 256K x 36

      40MB         (2) 1M x 36      (2) 4M x 36         NONE

      40MB         (2) 4M x 36      (2) 1M x 36         NONE

      48MB         (2) 2M x 36      (2) 4M x 36         NONE

      48MB         (2) 4M x 36      (2) 1M x 36      (2) 1M x 36

      64MB         (2) 4M x 36      (2) 4M x 36         NONE

      64MB         (2) 8M x 36          NONE            NONE

      66MB        (2) 256K x 36     (2) 4M x 36      (2) 4M x 36

      66MB         (2) 8M x 36     (2) 256K x 36        NONE

      68MB        (2) 512K x 36     (2) 4M x 36      (2) 4M x 36

      68MB         (2) 8M x 36     (2) 256K x 36    (2) 256K x 36

      72MB         (2) 1M x 36      (2) 4M x 36      (2) 4M x 36

      72MB         (2) 8M x 36      (2) 1M x 36         NONE

      80MB         (2) 2M x 36      (2) 4M x 36      (2) 4M x 36

                DRAM CONFIGURATION (CON’T)

     Size          Bank 0         Bank 1        Bank 2

     80MB       (2) 8M x 36    (2) 1M x 36    (2) 1M x 36

     96MB       (2) 4M x 36    (2) 4M x 36    (2) 4M x 36

     96MB       (2) 8M x 36    (2) 4M x 36       NONE

     112MB      (2) 8M x 36    (2) 4M x 36    (2) 4M x 36

     128MB      (2) 8M x 36        NONE       (2) 8M x 36

                            CACHE CONFIGURATION

          Size                    Bank 0                    TAG

          256KB                (8) 32K x 8          (1) 8K x 8 or (1) 32K
                                                            x 8

          512KB                (8) 64K x 8         (1) 16K x 8 or (1) 32K
                                                            x 8

        CACHE JUMPER CONFIGURATION

        Size                 JP3

        256KB         pins 1 & 2 closed

        512KB         pins 2 & 3 closed

                   CPU SPEED CONFIGURATION

        Speed                JP4                  JP5

        75MHz          pins 2 & 3 closed   pins 2 & 3 closed

        90MHz          pins 1 & 2 closed   pins 1 & 2 closed

       100MHz          pins 1 & 2 closed   pins 2 & 3 closed