FREE COMPUTER TECHNOLOGY, INC.

80486L-EISA

Processor            80486SX/80487SX/80486DX/80486DX2
Processor Speed      20/25/33/50(internal)/50/66(internal)MHz
Chip Set             SIS
Max. Onboard DRAM    128MB
SRAM Cache           64/128/256/512KB
BIOS                 Phoenix
Dimensions           330mm x 218mm
I/O Options          32-bit L-ISA local bus card slot
NPU Options          None

[Image]

                               C ONNECTIONS

  Purpose                 Location     Purpose                  Location

  Turbo LED                  H1        Speaker                     H4

  Reset switch               H2        Power LED & keylock         H5

  Turbo switch               H3        32-bit L-ISA local          S1
                                       bus card

                          CPU TYPE CONFIGURATION

     U24            U35         JP4        JP5        JP11        JP12

   80486DX2     80486SX/DX     pins 1    pins 1 &     open       closed
                                & 2     2 and 3 &
                                            4

   80487SX      80486SX/DX     pins 2    pins 1 &     open       closed
                                & 3     2 and 3 &
                                            4

   80486SX      80486SX/DX     open      pins 2 &     open       closed
                                            3

     NONE       80486SX/DX     pins 1    pins 1 &    closed       open
                                & 2     2 and 3 &
                                            4

  Note:Pins designated should be in the closed position.

  U35 is a surface mount CPU that may or may not have been installed at
  the factory.

  U24 is a socketed CPU that has been installed at the factory, or can be
  installed by the user.

             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

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

  16MB       (4) 4M x 9           NONE

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

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

  64MB      (4) 16M x 9           NONE

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

                         SRAM JUMPER CONFIGURATION

      Size               JP1               JP2                 JP3

      64KB              open               open               open

      128KB             open              closed        pins 1 & 2 closed

      256KB             open              closed        pins 2 & 3 closed

      512KB            closed             closed        pins 1 & 2 closed

                      SRAM CONFIGURATION

      Size        Cache SRAM       Location          TAG

      64KB        (8) 8K x 8      Banks 0 & 1     (1) 8K x 8

     128KB        (4) 32K x 8       Bank 0        (1) 8K x 8

     256KB        (8) 32K x 8     Banks 0 & 1    (1) 32K x 8

     512KB       (4) 128K x 8       Bank 0       (1) 32K x 8