
MONOLITHIC SYSTEMS, INC. (COLORADO MSI)

MICROFRAME 486P

Processor         80486SX/80487SX/80486DX/80486DX2
Processor Speed   25/33/50/66(internal)MHz
Chip Set          C & T PEAK DM
Max. Onboard DRAM 32MB
Cache             128KB
BIOS              AMI
Dimensions        330mm x 218mm
I/O Options       Bus mouse connector
NPU Options       4167

[Image]

                                CONNECTIONS

  Purpose                  Location     Purpose                 Location

  External battery            J1        Auxiliary keyboard        J15

  IDE interface LED           J3        Bus mouse                 J19

  Front panel composite       J6        Speaker                   J27
  cable

  Ready LED                   J7        Power LED & keylock       J44

  Reset switch                J8

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     CMOS memory normal operation             J2              Open

      CMOS memory clear                        J2             Closed

     Factory configured - do not alter        J9              Open

     Factory configured - do not alter        J10           pins 2 & 3
                                                              closed

     Factory configured - do not alter        J11            Closed

     Factory configured - do not alter        J17           pins 2 & 3
                                                              closed

     Monitor type select color                J18           pins 2 & 3
                                                              closed

      Monitor type select monochrome           J18           pins 1 & 2
                                                              closed

     Factory configured - do not alter        J20           pins 1 & 2
                                                              closed

     Bus mouse enabled                        J21            Closed

      Bus mouse disabled                       J21             Open

     Factory configured - do not alter        J22           pins 1 & 2
                                                              closed

     Factory configured - do not alter        J23           pins 2 & 3
                                                              closed

     Factory configured - do not alter        J24             Open

     Cache enabled                            J32           pins 1 & 2
                                                              closed

      Cache disabled                           J32           pins 2 & 3
                                                              closed

     DMA signal select active high            J35           pins 1 & 2
                                                              closed

      DMA signal select active low             J35           pins 2 & 3
                                                              closed

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

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

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

     3MB        (1) 512K x     (1) 256K x        NONE           NONE
                    36             36

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

     5MB       (1) 1M x 36     (1) 256K x        NONE           NONE
                                   36

     6MB        (1) 512K x    (1) 1M x 36        NONE           NONE
                    36

     7MB        (1) 512K x    (1) 1M x 36     (1) 256K x        NONE
                    36                            36

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

     9MB       (1) 2M x 36     (1) 256K x        NONE           NONE
                                   36

     10MB      (1) 2M x 36     (1) 512K x        NONE           NONE
                                   36

     11MB      (1) 2M x 36     (1) 512K x     (1) 256K x        NONE
                                   36             36

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

     13MB      (1) 2M x 36    (1) 1M x 36     (1) 256K x        NONE
                                                  36

     14MB      (1) 2M x 36     (1) 512K x    (1) 1M x 36        NONE
                                   36

     15MB      (1) 2M x 36     (1) 512K x    (1) 1M x 36    (1) 256K x 36
                                   36

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

     17MB      (1) 2M x 36    (1) 2M x 36     (1) 256K x        NONE
                                                  36

     18MB      (1) 2M x 36    (1) 2M x 36     (1) 512K x        NONE
                                                  36

     19MB      (1) 2M x 36    (1) 2M x 36     (1) 512K x    (1) 256K x 36
                                                  36

     20MB      (1) 2M x 36    (1) 2M x 36    (1) 1M x 36        NONE

     21MB      (1) 2M x 36    (1) 2M x 36    (1) 1M x 36    (1) 256K x 36

     22MB      (1) 2M x 36    (1) 2M x 36     (1) 512K x     (1) 1M x 36
                                                  36

                        DRAM CONFIGURATION (CONT)

     Size         Bank 0         Bank 1        Bank 2          Bank 3

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

     25MB       (1) 2M x 36    (1) 2M x 36   (1) 2M x 36   (1) 256K x 36

     26MB       (1) 2M x 36    (1) 2M x 36   (1) 2M x 36   (1) 512K x 36

     28MB       (1) 2M x 36    (1) 2M x 36   (1) 2M x 36    (1) 1M x 36

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

            CACHE CONFIGURATION

     Size          Bank 0          TAG

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

                          CPU TYPE CONFIGURATION

       Type               J12               J13                J14

      80486SX             Open           pins 2 & 3            Open
                                           closed

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

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

     80486DX2            Closed          pins 1 & 2         pins 1 & 2
                                           closed             closed

