CHAINTECH COMPUTER COMPANY, LTD.
================================

   486ICP

   Processor      80486SX/80487SX/80486DX/ODP486SX/80486DX2       
   Processor      25/33/50(internal)/66(internal)MHz              
   Speed          
   Chip Set       Intel                                           
   Max. Onboard   128MB                                           
   DRAM           
   Cache          128/256/512KB                                   
   BIOS           Award/Phoenix                                   
   Dimensions     330mm x 218mm                                   
   I/O Options    32-bit PCI local bus slots (3), special slot    
                  (1)                                             
   NPU Options    None                                            

<gopher://bitreich.org/I/th99/m/C-D/32372-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose       | Location | Purpose              | Location |
   |---------------+----------+----------------------+----------|
   | Reset switch  |   CN1    | 32-bit PCI bus slots |  PCI1 -  |
   |               |          |                      |   PCI3   |
   |---------------+----------+----------------------+----------|
   | Speaker       |   CN2    | Special slot         |   SL1    |
   |---------------+----------+----------------------+----------|
   | Power LED &   |   CN3    |                      |          |
   | keylock       |          |                      |          |
   |------------------------------------------------------------|
   | Note: The purpose of SL1 is unspecified by the             |
   | manufacturer.                                              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function                | Jumper  | Position |
   |---------------------------------------+---------+----------|
   |>> | Factory configured - do not alter |   J7    |   Open   |
   |---+-----------------------------------+---------+----------|
   |>> | Factory configured - do not alter |   J20   |   Open   |
   |---+-----------------------------------+---------+----------|
   |>> | Factory configured - do not alter |   J22   |   Open   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       2MB        |   (2) 256K x 36    |        NONE        |
   |------------------+--------------------+--------------------|
   |       4MB        |   (2) 256K x 36    |   (2) 256K x 36    |
   |------------------+--------------------+--------------------|
   |       4MB        |   (2) 512K x 36    |        NONE        |
   |------------------+--------------------+--------------------|
   |       6MB        |   (2) 256K x 36    |   (2) 512K x 36    |
   |------------------+--------------------+--------------------|
   |       6MB        |   (2) 512K x 36    |   (2) 256K x 36    |
   |------------------+--------------------+--------------------|
   |       8MB        |   (2) 512K x 36    |   (2) 512K x 36    |
   |------------------+--------------------+--------------------|
   |       8MB        |    (2) 1M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       10MB       |   (2) 256K x 36    |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       10MB       |    (2) 1M x 36     |   (2) 256K x 36    |
   |------------------+--------------------+--------------------|
   |       12MB       |   (2) 512K x 36    |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       12MB       |    (2) 1M x 36     |   (2) 512K x 36    |
   |------------------+--------------------+--------------------|
   |       16MB       |    (2) 1M x 36     |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       16MB       |    (2) 2M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       18MB       |   (2) 256K x 36    |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       18MB       |    (2) 2M x 36     |   (2) 256K x 36    |
   |------------------+--------------------+--------------------|
   |       20MB       |   (2) 512K x 36    |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       20MB       |    (2) 2M x 36     |   (2) 512K x 36    |
   |------------------+--------------------+--------------------|
   |       24MB       |    (2) 1M x 36     |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       24MB       |    (2) 2M x 36     |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       32MB       |    (2) 2M x 36     |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       32MB       |    (2) 4M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       34MB       |   (2) 256K x 36    |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       34MB       |    (2) 4M x 36     |   (2) 256K x 36    |
   |------------------+--------------------+--------------------|
   |       36MB       |   (2) 512K x 36    |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       36MB       |    (2) 4M x 36     |   (2) 512K x 36    |
   |------------------+--------------------+--------------------|
   |       40MB       |    (2) 1M x 36     |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       40MB       |    (2) 4M x 36     |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       48MB       |    (2) 2M x 36     |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       48MB       |    (2) 4M x 36     |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       64MB       |    (2) 4M x 36     |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       64MB       |    (2) 8M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       66MB       |   (2) 256K x 36    |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |       66MB       |    (2) 8M x 36     |   (2) 256K x 36    |
   |------------------+--------------------+--------------------|
   |       68MB       |   (2) 512K x 36    |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |       68MB       |    (2) 8M x 36     |   (2) 512K x 36    |
   |------------------+--------------------+--------------------|
   |       72MB       |    (2) 1M x 36     |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |       72MB       |    (2) 8M x 36     |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       80MB       |    (2) 2M x 36     |    (2) 8M x 36     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM CONFIGURATION (CON'T)                 |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       80MB       |    (2) 8M x 36     |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       96MB       |    (2) 4M x 36     |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |       96MB       |    (2) 8M x 36     |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |      128MB       |    (2) 8M x 36     |    (2) 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    | (4) 128K x 8  |     NONE      |  (1) 32K x 8  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   | Size  |  J14   |  J15   |       J17       |      J18       |
   |-------+--------+--------+-----------------+----------------|
   | 128KB |  Open  |  Open  |   pins 2 & 3    |   pins 1 & 2   |
   |       |        |        |     closed      |     closed     |
   |-------+--------+--------+-----------------+----------------|
   | 256KB | Closed |  Open  |   pins 1 & 2    |   pins 2 & 3   |
   |       |        |        |     closed      |     closed     |
   |-------+--------+--------+-----------------+----------------|
   | 512KB | Closed | Closed |   pins 2 & 3    |   pins 2 & 3   |
   |       |        |        |     closed      |     closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |   Type   |   J1    |   J2    |   J3    |   J4    |   J5    |
   |----------+---------+---------+---------+---------+---------|
   | 80486SX  |  Open   |  Open   |  Open   | Closed  |  Open   |
   |----------+---------+---------+---------+---------+---------|
   | ODP486SX |  Open   | Closed  | Closed  |  Open   | Closed  |
   |----------+---------+---------+---------+---------+---------|
   | 80487SX  |  Open   | Closed  | Closed  |  Open   | Closed  |
   |----------+---------+---------+---------+---------+---------|
   | 80486DX  | Closed  |  Open   | Closed  |  Open   | Closed  |
   |----------+---------+---------+---------+---------+---------|
   | 80486DX2 | Closed  |  Open   | Closed  |  Open   | Closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |  Speed   |        J21        |   JP29   |  JP30  |  JP31   |
   |----------+-------------------+----------+--------+---------|
   |  25MHz   | pins 1 & 2 closed |   Open   |  Open  | Closed  |
   |----------+-------------------+----------+--------+---------|
   |  33MHz   | pins 2 & 3 closed |  Closed  |  Open  |  Open   |
   |----------+-------------------+----------+--------+---------|
   |  50iMHz  | pins 1 & 2 closed |   Open   |  Open  | Closed  |
   |----------+-------------------+----------+--------+---------|
   |  66iMHz  | pins 2 & 3 closed |  Closed  |  Open  |  Open   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               PCI IRQ CONFIGURATION (INT A)                |
   |------------------------------------------------------------|
   |            IRQ             |              J33              |
   |----------------------------+-------------------------------|
   |            IRQ5            |      pins 11 & 12 closed      |
   |----------------------------+-------------------------------|
   |            IRQ9            |      pins 9 & 10 closed       |
   |----------------------------+-------------------------------|
   |           IRQ10            |       pins 7 & 8 closed       |
   |----------------------------+-------------------------------|
   |           IRQ11            |       pins 5 & 6 closed       |
   |----------------------------+-------------------------------|
   |           IRQ14            |       pins 3 & 4 closed       |
   |----------------------------+-------------------------------|
   |           IRQ15            |       pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               PCI IRQ CONFIGURATION (INT B)                |
   |------------------------------------------------------------|
   |            IRQ             |              J36              |
   |----------------------------+-------------------------------|
   |            IRQ5            |      pins 11 & 12 closed      |
   |----------------------------+-------------------------------|
   |            IRQ9            |      pins 9 & 10 closed       |
   |----------------------------+-------------------------------|
   |           IRQ10            |       pins 7 & 8 closed       |
   |----------------------------+-------------------------------|
   |           IRQ11            |       pins 5 & 6 closed       |
   |----------------------------+-------------------------------|
   |           IRQ14            |       pins 3 & 4 closed       |
   |----------------------------+-------------------------------|
   |           IRQ15            |       pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               PCI IRQ CONFIGURATION (INT C)                |
   |------------------------------------------------------------|
   |            IRQ             |              J35              |
   |----------------------------+-------------------------------|
   |            IRQ5            |      pins 11 & 12 closed      |
   |----------------------------+-------------------------------|
   |            IRQ9            |      pins 9 & 10 closed       |
   |----------------------------+-------------------------------|
   |           IRQ10            |       pins 7 & 8 closed       |
   |----------------------------+-------------------------------|
   |           IRQ11            |       pins 5 & 6 closed       |
   |----------------------------+-------------------------------|
   |           IRQ14            |       pins 3 & 4 closed       |
   |----------------------------+-------------------------------|
   |           IRQ15            |       pins 1 & 2 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               PCI IRQ CONFIGURATION (INT D)                |
   |------------------------------------------------------------|
   |            IRQ             |              J34              |
   |----------------------------+-------------------------------|
   |            IRQ5            |      pins 11 & 12 closed      |
   |----------------------------+-------------------------------|
   |            IRQ9            |      pins 9 & 10 closed       |
   |----------------------------+-------------------------------|
   |           IRQ10            |       pins 7 & 8 closed       |
   |----------------------------+-------------------------------|
   |           IRQ11            |       pins 5 & 6 closed       |
   |----------------------------+-------------------------------|
   |           IRQ14            |       pins 3 & 4 closed       |
   |----------------------------+-------------------------------|
   |           IRQ15            |       pins 1 & 2 closed       |
   +------------------------------------------------------------+