
ACHME COMPUTER, INC.

MS-4135

Processor  AM486SX/80486SX/CX486M7/AM486DX/80486DX/AM486DX2/80486DX2/
           80486DX4/Pentium Overdrive
Processor  25/33/40/50(internal)/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set   Contaq
Max.       64MB
Onboard
DRAM
Cache      128/256KB
BIOS       AMI/Award
Dimensions 270mm x 220mm
I/O        32-bit PCI slots (4), green PC connector
Options
NPU        None
Options

[Image]

                                CONNECTIONS

  Purpose                 Location      Purpose              Location

  External battery           JBA        Speaker             JM9 pins 7 -
                                                                10

  Green PC connector         JG1        Turbo LED          JM9 pins 12 &
  (monitor)                                                     13

  Green PC connector         JG2        Turbo switch       JM9 pins 15 -
                                                                17

  Green PC LED               JG3        Reset switch       JM9 pins 19 &
                                                                20

  Power LED & keylock    JM9 pins 1 -   32-bit PCI           PC1 - PC4
                              5         slots

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Battery type select internal            JBA           pins 2 & 3
                                                              closed

      Battery type select external            JBA             Closed

      CX486M7 3.3v not installed              JC8              Open

      CX486M7 3.3v installed                  JC8             Closed

     Factory configured - do not             JK8           pins 1 & 2
      alter                                                   closed

                            DRAM CONFIGURATION

     Size         Bank 0         Bank 1         Bank 2         Bank 3

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

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

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

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

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

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

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

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

     6MB       (1) 1M x 36     (1) 256K x     (1) 256K x        NONE
                                   36             36

     7MB       (1) 1M x 36     (1) 256K x     (1) 256K x    (1) 256K x 36
                                   36             36

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

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

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

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

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

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

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

     13MB       (1) 256K x    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36
                    36

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

     16MB      (1) 4M x 36        NONE           NONE           NONE

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

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

     17MB       (1) 256K x    (1) 4M x 36        NONE           NONE
                    36

     17MB      (1) 4M x 36     (1) 256K x        NONE           NONE
                                   36

     18MB      (1) 4M x 36     (1) 256K x     (1) 256K x        NONE
                                   36             36

     19MB      (1) 4M x 36     (1) 256K x     (1) 256K x    (1) 256K x 36
                                   36             36

     20MB      (1) 1M x 36    (1) 4M x 36        NONE           NONE

     20MB      (1) 4M x 36    (1) 1M x 36        NONE           NONE

     24MB      (1) 4M x 36    (1) 1M x 36    (1) 1M x 36        NONE

     28MB      (1) 4M x 36    (1) 1M x 36    (1) 1M x 36     (1) 1M x 36

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

     32MB      (1) 8M x 36        NONE           NONE           NONE

     33MB       (1) 256K x    (1) 4M x 36    (1) 4M x 36        NONE
                    36

     34MB      (1) 8M x 36        NONE        (1) 512K x        NONE
                                                  36

     34MB       (1) 512K x        NONE       (1) 8M x 36        NONE
                    36

     34MB      (1) 8M x 36        NONE        (1) 512K x        NONE
                                                  36

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

                        DRAM CONFIGURATION (CONT)

     Size          Bank 0         Bank 1        Bank 2         Bank 3

     40MB       (1) 8M x 36        NONE       (1) 2M x 36       NONE

     40MB       (1) 2M x 36        NONE       (1) 8M x 36       NONE

     40MB       (1) 2M x 36        NONE       (1) 8M x 36       NONE

     40MB       (1) 8M x 36        NONE       (1) 2M x 36       NONE

     48MB       (1) 4M x 36     (1) 4M x 36   (1) 4M x 36       NONE

     49MB        (1) 256K x     (1) 4M x 36   (1) 4M x 36    (1) 4M x 36
                     36

     52MB       (1) 1M x 36     (1) 4M 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        NONE       (1) 8M x 36       NONE

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

                    CACHE CONFIGURATION

     Size          Bank 0         Bank 1          TAG

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

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

   256KB (B)    (4) 64K x 8        NONE       (1) 32K x 8

                        CACHE JUMPER CONFIGURATION

      Size               JS1               JS2                 JS3

      128KB           pins 1 & 2        pins 1 & 2      pins 1 & 2 closed
                       closed             closed

    256KB (A)         pins 2 & 3        pins 1 & 2      pins 2 & 3 closed
                       closed             closed

    256KB (B)         pins 2 & 3        pins 1 & 2      pins 1 & 2 closed
                       closed             closed

                          CPU TYPE CONFIGURATION

        Type                JC5               JC7              JC25

      80486SX            pins 2 & 3          Open             Closed
                          closed

      AM486SX            pins 2 & 3          Open             Closed
                          closed

      AM486DX         pins 1 & 2, 3 &      pins 2 & 3         Closed
                         4 closed           closed

      80486DX         pins 1 & 2, 3 &      pins 2 & 3         Closed
                         4 closed           closed

      AM486DX2        pins 1 & 2, 3 &      pins 2 & 3         Closed
                         4 closed           closed

      80486DX2        pins 1 & 2, 3 &      pins 2 & 3         Closed
                         4 closed           closed

      80486DX4        pins 1 & 2, 3 &      pins 2 & 3          Open
                         4 closed           closed

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

                    CPU SPEED CONFIGURATION

   Speed      JC12       JK1       JK2        JK3       JK7

   25MHz      Open      Open       Open      Closed    1 & 2

   33MHz      Open     Closed     Closed      Open     1 & 2

   40MHz     Closed     Open      Closed      Open     2 & 3

  50iMHz      Open      Open       Open      Closed    1 & 2

  66iMHz      Open     Closed     Closed      Open     1 & 2

  75iMHz      Open      Open       Open      Closed    1 & 2

  100iMHz     Open     Closed     Closed      Open     1 & 2

  Note: Pins designated should be in the closed position.

                      PCI IRQ CONFIGURATION (SLOT 1)

  Card type/slot #       INT/IRQ             JP1                JP2

    NCR slot 2          IRQ11/INTA       pins 10 & 11        pins 7 & 8
                                            closed            closed

  Adaptec slot 2        IRQ11/INTA       pins 10 & 11        pins 7 & 8
                                            closed            closed

   Bus Logic SCSI       IRQ11/INTA       pins 10 & 11        pins 7 & 8
      slot 2                                closed            closed

    SCSI slot 1         IRQ9/INTB       pins 8 & 9, 10    pins 2 & 3, 7 &
                                         & 11 closed         8 closed

    SCSI slot 4         IRQ9/INTC       pins 5 & 6, 10    pins 2 & 3, 7 &
                                         & 11 closed         8 closed

    SCSI slot 1         IRQ9/INTA       pins 1 & 2, 11    pins 1 & 2, 8 &
                                         & 12 closed         9 closed

    Edge Trigger        IRQ14/INTD        pins 2 & 3        pins 16 & 17
      slot 1                                closed            closed

   Level Trigger        IRQ14/INTD        pins 2 & 3        pins 17 & 18
      slot 1                                closed            closed

