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ISA 486

Processor         80486SX/80487SX/80486DX
Processor Speed   16/20/25/33MHz
Chip Set          OPTI
Max. Onboard DRAM 32MB
Cache             None
BIOS              AMI
Dimensions        223mm x 203mm
I/O Options       None
NPU Options       None

[Image]

                                CONNECTIONS

  Purpose                  Location    Purpose                   Location

  Reset switch                H1       Power LED & keylock         H4

  Turbo switch                H2       Speaker                     H5

  Turbo LED                   H3       External battery            J1

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

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

      16MB        (4) 4M x 9         NONE

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

                         CPU TYPE CONFIGURATION

   Type             JP3                 JP4                  JP5

  80486SX          Open           pins 2 & 3 closed          Open

  80487SX    pins 2 & 3 closed    pins 1 & 2 closed         Closed

  80486DX    pins 1 & 2 closed    pins 1 & 2 closed         Closed