
FREE COMPUTER TECHNOLOGY, INC.

80486PCI REV. 1

Processor      80486SX/80487SX/80486DX/ODP486SX/80486DX2/Pentium Overdrive
Processor      25/33/50(internal)/66(internal)MHz
Speed
Chip Set       SIS
Max. Onboard   128MB
DRAM
Cache          128/256/512KB
BIOS           Award
Dimensions     330mm x 218mm
I/O Options    32-bit PCI bus slots (4)
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 PCI bus slots     PC1 - PC4

                        USER CONFIGURABLE SETTINGS

                Function                    Jumper           Position

     Cache enabled                           JP4           pins 2 & 3
                                                              closed

      Cache disabled                          JP4           pins 1 & 2
                                                              closed

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

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

     4MB        (1) 256K x     (1) 256K x     (1) 256K x    (1) 256K x 36
                    36             36             36

     4MB        (1) 512K x     (1) 512K x        NONE           NONE
                    36             36

     6MB        (1) 256K x     (1) 256K x     (1) 512K x    (1) 512K x 36
                    36             36             36

     6MB        (1) 512K x     (1) 512K x     (1) 256K x    (1) 256K x 36
                    36             36             36

     8MB        (1) 512K x     (1) 512K x     (1) 512K x    (1) 512K x 36
                    36             36             36

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

     10MB       (1) 256K x     (1) 256K x    (1) 1M x 36     (1) 1M x 36
                    36             36

     10MB      (1) 1M x 36    (1) 1M x 36     (1) 256K x    (1) 256K x 36
                                                  36

     12MB       (1) 512K x     (1) 512K x    (1) 1M x 36     (1) 1M x 36
                    36             36

     12MB      (1) 1M x 36    (1) 1M x 36     (1) 512K x    (1) 512K x 36
                                                  36

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

     16MB      (1) 1M x 36    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36

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

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

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

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

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

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

     32MB      (1) 4M x 36    (1) 4M x 36        NONE           NONE

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

     34MB       (1) 256K x     (1) 256K x    (1) 4M x 36     (1) 4M x 36
                    36             36

     34MB      (1) 4M x 36    (1) 4M x 36     (1) 256K x    (1) 256K x 36
                                                  36

     36MB       (1) 512K x     (1) 512K x    (1) 4M x 36     (1) 4M x 36
                    36             36

     36MB      (1) 4M x 36    (1) 4M x 36     (1) 512K x    (1) 512K x 36
                                                  36

     40MB      (1) 4M x 36    (1) 4M x 36    (1) 1M x 36     (1) 1M x 36

     40MB      (1) 1M x 36    (1) 1M x 36    (1) 4M x 36     (1) 4M x 36

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

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

     64MB      (1) 4M x 36    (1) 4M x 36    (1) 4M x 36     (1) 4M x 36

     64MB      (1) 8M x 36    (1) 8M x 36        NONE           NONE

     66MB       (1) 256K x     (1) 256K x    (1) 8M x 36     (1) 8M x 36
                    36             36

     66MB      (1) 8M x 36    (1) 8M x 36     (1) 256K x    (1) 256K x 36
                                                  36

     68MB       (1) 512K x     (1) 512K x    (1) 8M x 36     (1) 8M x 36
                    36             36

     68MB      (1) 8M x 36    (1) 8M x 36     (1) 512K x    (1) 512K x 36
                                                  36

     72MB      (1) 1M x 36    (1) 1M x 36    (1) 8M x 36     (1) 8M x 36

     72MB      (1) 8M x 36    (1) 8M x 36    (1) 1M x 36     (1) 1M x 36

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

                       DRAM CONFIGURATION (CONT)

     Size         Bank 0         Bank 1         Bank 2        Bank 3

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

     96MB       (1) 4M x 36   (1) 4M x 36    (1) 8M x 36    (1) 8M x 36

     96MB       (1) 8M x 36   (1) 8M x 36    (1) 4M x 36    (1) 4M x 36

    128MB       (1) 8M x 36   (1) 8M x 36    (1) 8M x 36    (1) 8M x 36

                      CACHE CONFIGURATION

      Size          Bank 0          Bank 1           TAG

     128KB        (4) 32K x 8        NONE         (1) 8K x 8

     256KB        (4) 32K x 8     (4) 32K x 8    (1) 32K x 8

     512KB       (1) 128K x 8        NONE        (1) 32K x 8

                        CACHE JUMPER CONFIGURATION

    Size          JP2             JP3            JP12           JP13

   128KB       pins 1 & 2      pins 2 & 3        Open           Open
                 closed          closed

   256KB       pins 2 & 3      pins 1 & 2       Closed          Open
                 closed          closed

   512KB       pins 2 & 3      pins 2 & 3       Closed         Closed
                 closed          closed

                          CPU TYPE CONFIGURATION

         Type               JP14             JP15              JP16

       80486SX            pins 1 & 2         Open            pins 2 & 3
                           closed                             closed

       80487SX            pins 1 & 2       pins 2 & 3     pins 1 & 2, 3 &
                           closed           closed           4 closed

       ODP486SX           pins 1 & 2       pins 2 & 3     pins 1 & 2, 3 &
                           closed           closed           4 closed

     80486DX/DX2          pins 1 & 2       pins 1 & 2     pins 1 & 2, 3 &
                           closed           closed           4 closed

  Pentium Overdrive       pins 2 & 3       pins 2 & 3     pins 1 & 2, 3 &
                           closed           closed           4 closed

                          CPU SPEED CONFIGURATION

      Speed               JP5               JP10               JP11

      25MHz            pins 1 & 2           Open              Closed
                        closed

      33MHz            pins 2 & 3          Closed              Open
                        closed

      50iMHz           pins 1 & 2           Open              Closed
                        closed

      66iMHz           pins 2 & 3          Closed              Open
                        closed

                          PCI IRQ14 CONFIGURATION

         Setting                    JP27                    JP28

         ISA IDE             pins 2 & 3 closed             Closed

  PCI IDE (edge trigger)     pins 4 & 5 closed              Open

  PCI IDE (level trigger)    pins 1 & 2 closed              Open

