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

   5SEM4.1

   Processor        Pentium                                       
   Processor Speed  75/90/100/120/133/150MHz                      
   Chip Set         SIS                                           
   Video Chip Set   None                                          
   Maximum Onboard  128MB (EDO supported)                         
   Memory           
   Maximum Video    None                                          
   Memory           
   Cache            256/512/1024KB                                
   BIOS             Award                                         
   Dimensions       275mm x 220mm                                 
   I/O Options      32-bit PCI slots (4), floppy drive interface, 
                    green PC connector, IDE interfaces (2),       
                    parallel port, serial ports (2), cache slot,  
                    IR connector, VRM connector                   
   NPU Options      None                                          

<gopher://bitreich.org/I/th99/m/C-D/33827-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Serial port 1     |    J4    | Power LED &      |   J13    |
   |                   |          | keylock          |          |
   |-------------------+----------+------------------+----------|
   | Serial port 2     |    J5    | Speaker          |   J15    |
   |-------------------+----------+------------------+----------|
   | Floppy drive      |    J6    | Reset switch     |   J16    |
   | interface         |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Parallel port     |    J7    | Turbo LED        |   J17    |
   |-------------------+----------+------------------+----------|
   | IDE interface 1   |    J8    | IDE interface    |   J18    |
   |                   |          | LED              |          |
   |-------------------+----------+------------------+----------|
   | IDE interface 2   |    J9    | IR connector     |   JP25   |
   |-------------------+----------+------------------+----------|
   | Green PC LED      |   J10    | 32-bit PCI slots |  PC1 -   |
   |                   |          |                  |   PC4    |
   |-------------------+----------+------------------+----------|
   | Green PC          |   J11    | Cache slot       |   SL1    |
   | connector         |          |                  |          |
   |-------------------+----------+------------------+----------|
   | Turbo switch      |   J12    | VRM connector    |   VRM    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |             Function              | Label |    Position    |
   |-----------------------------------+-------+----------------|
   |   | CPU clock select clock/2      |  JP8  |      Open      |
   |   | (60/66MHz)                    |       |                |
   |---+-------------------------------+-------+----------------|
   |   | CPU clock select clock =      |  JP8  |     Closed     |
   |   | clock (50MHz)                 |       |                |
   |---+-------------------------------+-------+----------------|
   |   | IR connector type select      | JP25  |   Pins 1 - 4   |
   |   | Intel                         |       |     closed     |
   |---+-------------------------------+-------+----------------|
   |   | IR connector type select      | JP25  |   Pins 2 - 6   |
   |   | Hewlett-Packard               |       |     closed     |
   |---+-------------------------------+-------+----------------|
   |   | VRM on board regulator        |  VRM  |      Open      |
   |   | disabled                      |       |                |
   |---+-------------------------------+-------+----------------|
   |   | VRM on board regulator        |  VRM  | Pins 6 & 7, 21 |
   |   | enabled                       |       |  & 22 closed   |
   +------------------------------------------------------------+

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

   +------------------------------------------------------------+
   |                 DRAM CONFIGURATION (CON'T)                 |
   |------------------------------------------------------------|
   |     Size     |       Bank 0       |         Bank 1         |
   |--------------+--------------------+------------------------|
   |     66MB     |    (2) 8M x 36     |     (2) 256K x 36      |
   |--------------+--------------------+------------------------|
   |     68MB     |    (2) 8M x 36     |     (2) 512K x 36      |
   |--------------+--------------------+------------------------|
   |     72MB     |    (2) 8M x 36     |      (2) 1M x 36       |
   |--------------+--------------------+------------------------|
   |     80MB     |    (2) 8M x 36     |      (2) 2M x 36       |
   |--------------+--------------------+------------------------|
   |     96MB     |    (2) 8M x 36     |      (2) 4M x 36       |
   |--------------+--------------------+------------------------|
   |    128MB     |    (2) 8M x 36     |      (2) 8M x 36       |
   |------------------------------------------------------------|
   | Note: Board accepts EDO memory. Board also accepts x 32    |
   | SIMMs.                                                     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  |    Bank 0    |     TAG     |          SL1          |
   |-------+--------------+-------------+-----------------------|
   | 256KB | (8) 32K x 8  | (1) 8K x 8  |     Not installed     |
   |-------+--------------+-------------+-----------------------|
   | 256KB |     None     |    None     |     256KB module      |
   |       |              |             |       installed       |
   |-------+--------------+-------------+-----------------------|
   | 512KB | (8) 64K x 8  | (1) 32K x 8 |     Not installed     |
   |-------+--------------+-------------+-----------------------|
   | 512KB |     None     |    None     |     512KB module      |
   |       |              |             |       installed       |
   |-------+--------------+-------------+-----------------------|
   |  1MB  | (8) 128K x 8 | (1) 32K x 8 |     Not installed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |       Size       |        JP13        |        JP14        |
   |------------------+--------------------+--------------------|
   |      256KB       | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |      512KB       | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |       1MB        | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                CACHE VOLTAGE CONFIGURATION                 |
   |------------------------------------------------------------|
   |          Voltage           |             JP11              |
   |----------------------------+-------------------------------|
   |           Mixed            |   Pins 3 & 4, 5 & 6 closed    |
   |----------------------------+-------------------------------|
   |            3.3v            |   Pins 1 & 2, 7 & 8 closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CACHE TYPE CONFIGURATION                  |
   |------------------------------------------------------------|
   |            Type            |             JP12              |
   |----------------------------+-------------------------------|
   |        Asynchronous        |       Pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   |       Pipeline burst       |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CPU SPEED SELECTION                     |
   |------------------------------------------------------------|
   |CPU speed|Clock speed|Multiplier| JP9  | JP10 | JP19 | JP20 |
   |---------+-----------+----------+------+------+------+------|
   |  75MHz  |   50MHz   |   1.5x   |Closed|Closed| Open | Open |
   |---------+-----------+----------+------+------+------+------|
   |  90MHz  |   60MHz   |   1.5x   |Closed| Open | Open | Open |
   |---------+-----------+----------+------+------+------+------|
   | 100MHz  |   66MHz   |   1.5x   | Open |Closed| Open | Open |
   |---------+-----------+----------+------+------+------+------|
   | 120MHz  |   60MHz   |    2x    |Closed| Open |Closed| Open |
   |---------+-----------+----------+------+------+------+------|
   | 133MHz  |   66MHz   |    2x    |Closed| Open |Closed| Open |
   |---------+-----------+----------+------+------+------+------|
   | 150MHz  |   60MHz   |   2.5x   |Closed| Open |Closed|Closed|
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU VOLTAGE SELECTION                    |
   |------------------------------------------------------------|
   |          Voltage           |             JP18              |
   |----------------------------+-------------------------------|
   |            3.3v            |       Pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   |            3.4v            |       Pins 3 & 4 closed       |
   |----------------------------+-------------------------------|
   |            3.5v            |       Pins 5 & 6 closed       |
   +------------------------------------------------------------+