TMC RESEARCH CORPORATION
========================

   AI5TH (VER. 1.0E)

   Processor        CX M1/AM K5/Pentium                           
   Processor Speed  75/90/100/120/133/150/166/200MHz              
   Chip Set         Intel                                         
   Video Chip Set   None                                          
   Maximum Onboard  256MB                                         
   Memory           
   Maximum Video    None                                          
   Memory           
   Cache            256/512KB                                     
   BIOS             Unidentified                                  
   Dimensions       254mm x 218mm                                 
   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, USB connector                   
   NPU Options      None                                          

<gopher://bitreich.org/I/th99/m/S-T/34463-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose            | Location | Purpose       |  Location  |
   |--------------------+----------+---------------+------------|
   | USB connector 1    |    J6    | Speaker       | J20/pins 1 |
   |                    |          |               |    & 4     |
   |--------------------+----------+---------------+------------|
   | Serial port 1      |    J7    | Green PC      | J20/pins 6 |
   |                    |          | connector     |    & 16    |
   |--------------------+----------+---------------+------------|
   | USB connector 2    |    J8    | Turbo LED     | J20/pins 8 |
   |                    |          |               |    & 18    |
   |--------------------+----------+---------------+------------|
   | Serial port 2      |    J9    | Reset switch  | J20/pins 9 |
   |                    |          |               |    & 19    |
   |--------------------+----------+---------------+------------|
   | Floppy drive       |   J12    | IDE interface |  J20/pins  |
   | interface          |          | LED           |  10 & 20   |
   |--------------------+----------+---------------+------------|
   | Parallel port      |   J13    | Power LED &   |  J20/pins  |
   |                    |          | keylock       |  11 & 15   |
   |--------------------+----------+---------------+------------|
   | IDE interface 1    |   J15    | 32-bit PCI    | PC1 - PC4  |
   |                    |          | slots         |            |
   |--------------------+----------+---------------+------------|
   | IDE interface 2    |   J16    | Cache slot    |    SL1     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |             Function              | Label |    Position    |
   |-----------------------------------+-------+----------------|
   |>> | Flash BIOS voltage select 5v  |  JP7  |   Pins 2 & 3   |
   |   |                               |       |     closed     |
   |---+-------------------------------+-------+----------------|
   |   | Flash BIOS voltage select 12v |  JP7  |   Pins 1 & 2   |
   |   |                               |       |     closed     |
   |---+-------------------------------+-------+----------------|
   |>> | PCI CLK select /4             | JP13  |     Closed     |
   |---+-------------------------------+-------+----------------|
   |   | PCI CLK select /3             | JP13  |      Open      |
   |---+-------------------------------+-------+----------------|
   |>> | CMOS memory normal operation  | JP17  |      Open      |
   |---+-------------------------------+-------+----------------|
   |   | CMOS memory clear             | JP17  |     Closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       8MB        |     (2) 1Mx 32     |        None        |
   |------------------+--------------------+--------------------|
   |       16MB       |     (2) 2Mx 32     |        None        |
   |------------------+--------------------+--------------------|
   |       16MB       |     (2) 1Mx 32     |     (2) 1Mx 32     |
   |------------------+--------------------+--------------------|
   |       24MB       |     (2) 2Mx 32     |     (2) 1Mx 32     |
   |------------------+--------------------+--------------------|
   |       32MB       |     (2) 4Mx 32     |        None        |
   |------------------+--------------------+--------------------|
   |       32MB       |     (2) 2Mx 32     |     (2) 2Mx 32     |
   |------------------+--------------------+--------------------|
   |       40MB       |     (2) 4Mx 32     |     (2) 1Mx 32     |
   |------------------+--------------------+--------------------|
   |       48MB       |     (2) 4Mx 32     |     (2) 2Mx 32     |
   |------------------+--------------------+--------------------|
   |       64MB       |     (2) 8Mx 32     |        None        |
   |------------------+--------------------+--------------------|
   |       64MB       |     (2) 4Mx 32     |     (2) 4Mx 32     |
   |------------------+--------------------+--------------------|
   |       72MB       |     (2) 8Mx 32     |     (2) 1Mx 32     |
   |------------------+--------------------+--------------------|
   |       80MB       |     (2) 8Mx 32     |     (2) 2Mx 32     |
   |------------------+--------------------+--------------------|
   |       96MB       |     (2) 8Mx 32     |     (2) 4Mx 32     |
   |------------------+--------------------+--------------------|
   |      128MB       |     (2) 8Mx 32     |     (2) 8Mx 32     |
   |------------------+--------------------+--------------------|
   |      128MB       |    (2) 16Mx 32     |        None        |
   |------------------+--------------------+--------------------|
   |      136MB       |    (2) 16Mx 32     |     (2) 1Mx 32     |
   |------------------+--------------------+--------------------|
   |      144MB       |    (2) 16Mx 32     |     (2) 2Mx 32     |
   |------------------+--------------------+--------------------|
   |      192MB       |    (2) 16Mx 32     |     (2) 8Mx 32     |
   |------------------+--------------------+--------------------|
   |      256MB       |    (2) 16Mx 32     |    (2) 16Mx 32     |
   |------------------------------------------------------------|
   | Note: Board accepts EDO memory.                            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   | Note: The cache configuration is unidentified.             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                CPU SPEED SELECTION (CYRIX)                 |
   |------------------------------------------------------------|
   |  CPU  | Clock  |Multiplier| JP8  | JP9  | JP10 | JP11 |JP12|
   | speed | speed  |          |      |      |      |      |    |
   |-------+--------+----------+------+------+------+------+----|
   |120MHz | 50MHz  |    2x    |Closed|Closed|Closed|Closed|Open|
   |-------+--------+----------+------+------+------+------+----|
   |133MHz | 55MHz  |    2x    |Closed| Open | Open |Closed|Open|
   |-------+--------+----------+------+------+------+------+----|
   |150MHz | 60MHz  |    2x    |Closed| Open |Closed|Closed|Open|
   |-------+--------+----------+------+------+------+------+----|
   |166MHz | 66MHz  |    2x    | Open |Closed| Open |Closed|Open|
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CPU SPEED SELECTION (AMD)                  |
   |------------------------------------------------------------|
   |  CPU  |Clock |Multiplier| JP8  | JP9  | JP10 | JP11 | JP12 |
   | speed |speed |          |      |      |      |      |      |
   |-------+------+----------+------+------+------+------+------|
   | 75MHz |50MHz |   1.5x   |Closed|Closed|Closed| Open | Open |
   |-------+------+----------+------+------+------+------+------|
   | 90MHz |60MHz |   1.5x   |Closed| Open |Closed| Open | Open |
   |-------+------+----------+------+------+------+------+------|
   |100MHz |66MHz |   1.5x   | Open |Closed| Open | Open | Open |
   |-------+------+----------+------+------+------+------+------|
   |120MHz |60MHz |   1.5x   |Closed| Open |Closed| Open | Open |
   |-------+------+----------+------+------+------+------+------|
   |133MHz |66MHz |   1.5x   | Open |Closed| Open | Open | Open |
   |-------+------+----------+------+------+------+------+------|
   |150MHz |60MHz |   2.5x   |Closed| Open |Closed|Closed|Closed|
   |-------+------+----------+------+------+------+------+------|
   |166MHz |66MHz |   2.5x   | Open |Closed| Open |Closed|Closed|
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                CPU SPEED SELECTION (INTEL)                 |
   |------------------------------------------------------------|
   |  CPU  |Clock |Multiplier| JP8  | JP9  | JP10 | JP11 | JP12 |
   | speed |speed |          |      |      |      |      |      |
   |-------+------+----------+------+------+------+------+------|
   | 75MHz |50MHz |   1.5x   |Closed|Closed|Closed| Open | Open |
   |-------+------+----------+------+------+------+------+------|
   | 90MHz |60MHz |   1.5x   |Closed| Open |Closed| Open | Open |
   |-------+------+----------+------+------+------+------+------|
   |100MHz |66MHz |   1.5x   | Open |Closed| Open | Open | Open |
   |-------+------+----------+------+------+------+------+------|
   |120MHz |60MHz |    2x    |Closed| Open |Closed|Closed| Open |
   |-------+------+----------+------+------+------+------+------|
   |133MHz |66MHz |    2x    | Open |Closed| Open |Closed| Open |
   |-------+------+----------+------+------+------+------+------|
   |150MHz |60MHz |   2.5x   |Closed| Open |Closed|Closed|Closed|
   |-------+------+----------+------+------+------+------+------|
   |166MHz |66MHz |   2.5x   | Open |Closed| Open |Closed|Closed|
   |-------+------+----------+------+------+------+------+------|
   |200MHz |66MHz |    3x    | Open |Closed| Open | Open |Closed|
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU VOLTAGE SELECTION                    |
   |------------------------------------------------------------|
   |      Voltage       |       JP14        |       JP19        |
   |--------------------+-------------------+-------------------|
   |       Single       |      Closed       |       Open        |
   |--------------------+-------------------+-------------------|
   |        Dual        |       Open        |      Closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   DMA CHANNEL SELECTION                    |
   |------------------------------------------------------------|
   |     Channel      |        JP3         |        JP4         |
   |------------------+--------------------+--------------------|
   |    |      1      | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   |----+-------------+--------------------+--------------------|
   |>>  |      3      | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  SERIAL PORT 2 SELECTION                   |
   |------------------------------------------------------------|
   |        Setting         |       JP1       |       JP2       |
   |------------------------+-----------------+-----------------|
   |   |    Used as COM2    |   Pins 1 & 2    |   Pins 1 & 2    |
   |   |                    |     closed      |     closed      |
   |---+--------------------+-----------------+-----------------|
   |>> |     Used as IR     |   Pins 2 & 3    |   Pins 2 & 3    |
   |   |     connector      |     closed      |     closed      |
   +------------------------------------------------------------+