AMPTRON INTERNATIONAL, INC.
===========================

   DX-6600

   Processor         80486SX/AM486SX/Cx486S/80487SX/AM486DX       
                                                                  
                     80486DX/Cx486DX/AM486DX2/80486DX2            
   Processor Speed   25/33/40/50(internal/50/66(internal)MHz      
   Chip Set          SARC                                         
   Max. Onboard DRAM 64MB                                         
   Cache             64/128/256KB                                 
   BIOS              AMI                                          
   Dimensions        330mm x 218mm                                
   I/O Options       32-bit VESA local bus slots (3)              
   NPU Options       80387DX                                      

<gopher://bitreich.org/I/th99/m/A-B/31950-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose     | Location | Purpose          |    Location    |
   |-------------+----------+------------------+----------------|
   | Power LED & |   JP10   | Reset switch     |      JP13      |
   | keylock     |          |                  |                |
   |-------------+----------+------------------+----------------|
   | Speaker     |   JP11   | Turbo switch     |      JP14      |
   |-------------+----------+------------------+----------------|
   | Turbo LED   |   JP12   | 32-bit VESA      | SL1, SL2,& SL3 |
   |             |          | local bus slots  |                |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |   | CPU clock rate < 33 MHz          |  JP15  |    Open    |
   |---+----------------------------------+--------+------------|
   |   | CPU clock rate > 33 MHz          |  JP15  | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | CMOS memory normal               |  JP1   |    Open    |
   |   | operation(External Battery)      |        |            |
   |---+----------------------------------+--------+------------|
   |   | CMOS memory normal               |  JP1   | pins 2 & 3 |
   |   | operation(Rechargeable Battery)  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | CMOS memory clear                |  JP1   | pins 3 & 4 |
   |   |                                  |        |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     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) 1M x 9     |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       16MB       |     (4) 4M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       20MB       |     (4) 4M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
   |------------------+--------------------+--------------------|
   |       64MB       |    (4) 16M x 9     |        NONE        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |    Bank 0     |    Bank 1     |      TAG      |
   |------------+---------------+---------------+---------------|
   |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   128KB    |  (4) 32K x 8  |     NONE      |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   | Size  |  JP2   |  JP4   |       JP5       |      JP6       |
   |-------+--------+--------+-----------------+----------------|
   | 64KB  |  Open  |  Open  |   pins 1 & 2    |      Open      |
   |       |        |        |     closed      |                |
   |-------+--------+--------+-----------------+----------------|
   | 128KB |  Open  | Closed |   pins 2 & 3    |   pins 2 & 3   |
   |       |        |        |     closed      |     closed     |
   |-------+--------+--------+-----------------+----------------|
   | 256KB | Closed | Closed |   pins 1 & 2    |   pins 1 & 2   |
   |       |        |        |     closed      |     closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |  CPU Type  |           JP16           |        JP17        |
   |------------+--------------------------+--------------------|
   |  80486SX   |    pins 2 & 3 closed     |        Open        |
   |------------+--------------------------+--------------------|
   |   Cx486S   | pins 1 & 2, 3 & 4 closed | pins 1 & 2 closed  |
   |------------+--------------------------+--------------------|
   |  80487SX   | pins 1 & 2, 3 & 4 closed | pins 2 & 3 closed  |
   |------------+--------------------------+--------------------|
   |  80486DX   | pins 1 & 2, 3 & 4 closed | pins 1 & 2 closed  |
   |------------+--------------------------+--------------------|
   |  Cx486DX   | pins 1 & 2, 3 & 4 closed | pins 1 & 2 closed  |
   |------------+--------------------------+--------------------|
   |  80486DX2  | pins 1 & 2, 3 & 4 closed | pins 1 & 2 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   | CPU speed |      JP7       |      JP8      |     JP18      |
   |-----------+----------------+---------------+---------------|
   |   25MHz   |   pins 2 & 3   |  pins 1 & 2   |  pins 1 & 2   |
   |           |     closed     |    closed     |    closed     |
   |-----------+----------------+---------------+---------------|
   |   33MHz   |   pins 1 & 2   |  pins 2 & 3   |  pins 1 & 2   |
   |           |     closed     |    closed     |    closed     |
   |-----------+----------------+---------------+---------------|
   |   40MHz   |   pins 2 & 3   |  pins 2 & 3   |  pins 1 & 2   |
   |           |     closed     |    closed     |    closed     |
   |-----------+----------------+---------------+---------------|
   |   50MHz   |   pins 2 & 3   |  pins 1 & 2   |  pins 2 & 3   |
   |           |     closed     |    closed     |    closed     |
   |-----------+----------------+---------------+---------------|
   |  50iMHz   |   pins 2 & 3   |  pins 1 & 2   |  pins 1 & 2   |
   |           |     closed     |    closed     |    closed     |
   |-----------+----------------+---------------+---------------|
   |  66iMHz   |   pins 1 & 2   |  pins 2 & 3   |  pins 1 & 2   |
   |           |     closed     |    closed     |    closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |         CPU SPEED CONFIGURATION (AMD486 CPU ONLY)          |
   |------------------------------------------------------------|
   |            | Adaptor Board  |  System Board   |            |
   |------------+----------------+-----------------+------------|
   | CPU speed  |      JP1       |       JP2       |    JP18    |
   |------------+----------------+-----------------+------------|
   |   25MHz    |   pins 1 & 2   | pins 1 & 2, 3 & | pins 2 & 3 |
   |            |                |        4        |            |
   |------------+----------------+-----------------+------------|
   |   33MHz    |   pins 2 & 3   | pins 1 & 2, 3 & | pins 2 & 3 |
   |            |                |        4        |            |
   |------------+----------------+-----------------+------------|
   |  Cx 40MHz  |   pins 2 & 3   |   pins 3 & 4    | pins 1 & 2 |
   |------------+----------------+-----------------+------------|
   |   40MHz    |   pins 1 & 2   |   pins 2 & 3    | pins 1 & 2 |
   |------------+----------------+-----------------+------------|
   |   50MHz    |   pins 1 & 2   |   pins 3 & 4    | pins 2 & 3 |
   |------------+----------------+-----------------+------------|
   |   50iMHz   |   pins 1 & 2   | pins 1 & 2, 3 & | pins 2 & 3 |
   |            |                |        4        |            |
   |------------+----------------+-----------------+------------|
   |   66iMHz   |   pins 2 & 3   | pins 1 & 2, 3 & | pins 2 & 3 |
   |            |                |        4        |            |
   |------------------------------------------------------------|
   | Note:Pins designated are in the closed position.           |
   |------------------------------------------------------------|
   | When this system board is installed with a AMD486 CPU, a   |
   | DX-6600 clock generator adaptor board is required. A       |
   | system board that has this adaptor board installed must    |
   | follow the above configuration table. System boards        |
   | without this adapter board are to be configured according  |
   | to the user manual.                                        |
   |                                                            |
   | To install the DX-6600 clock generator adaptor board,      |
   | remove the original clock chip from location "Y1" (between |
   | the 387DX socket and the inner most VL-bus slot). Remove   |
   | the jumper caps from JP7 and JP8. Use a wire cutter to cut |
   | all the pins from JP7. Orient the cut-off at the socket    |
   | under the adapter with the cut-off at the socket on the    |
   | system board location "Y1" in such a way that the jumper   |
   | JP1 & JP2 on the adapter board are on top of the original  |
   | jumper JP7 on the system board. Insert the adapter board   |
   | firmly into the 8-pin system board socket and follow the   |
   | jumper settings above to configure your system.            |
   |                                                            |
   | If you have any problems installing the DX-6600 or         |
   | configuring your system, please contact the manufacturer   |
   | for assisstance.                                           |
   +------------------------------------------------------------+