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

   PAT48PL

   Processor           80486SX/80487SX/80486DX/ODP486SX/80486DX2  
   Processor Speed     16/20/25/33/50(internal)/66(internal)MHz   
   Chip Set            OPTI                                       
   Max. Onboard DRAM   32MB                                       
   Cache               None                                       
   BIOS                AMI                                        
   Dimensions          254mm x 218mm                              
   I/O Options         None                                       
   NPU Options         None                                       

<gopher://bitreich.org/I/th99/m/S-T/30808-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose        |  Location  | Purpose        |  Location   |
   |----------------+------------+----------------+-------------|
   | External       |     J1     | Turbo LED      | J6 pins 8 & |
   | battery        |            |                |     18      |
   |----------------+------------+----------------+-------------|
   | IDE LED out    |     J5     | Reset switch   | J6 pins 9 & |
   |                |            |                |     19      |
   |----------------+------------+----------------+-------------|
   | Speaker        | J6 pins 1  | IDE LED in     | J6 pins 10  |
   |                |    - 4     |                |    & 20     |
   |----------------+------------+----------------+-------------|
   | Turbo switch   | J6 pins 7  | Power LED &    | J6 pins 11  |
   |                |    & 17    | keylock        |    - 15     |
   |------------------------------------------------------------|
   | Note:Board may be supplied with a surface mounted 80486SX. |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | CMOS memory normal operation     |  JP1   | pins 2 & 3 |
   |   | (internal battery)               |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | CMOS memory normal operation     |  JP1   |    Open    |
   |   | (external battery at J1)         |        |            |
   |---+----------------------------------+--------+------------|
   |   | CMOS memory clear                |  JP1   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Monitor type select color        |  JP2   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select monochrome   |  JP2   |    Open    |
   +------------------------------------------------------------+

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

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |   Type    |      RNA       |      RNB      |      RNC      |
   |-----------+----------------+---------------+---------------|
   |  80486SX  | Not installed  |   Installed   | Not installed |
   |-----------+----------------+---------------+---------------|
   |  80487SX  |   Installed    | Not installed | Not installed |
   |-----------+----------------+---------------+---------------|
   | ODP486SX  |   Installed    | Not installed | Not installed |
   |-----------+----------------+---------------+---------------|
   |  80486DX  | Not installed  | Not installed |   Installed   |
   |-----------+----------------+---------------+---------------|
   | 80486DX2  | Not installed  | Not installed |   Installed   |
   |------------------------------------------------------------|
   | Note:Although there are two locations for CPUs, only one   |
   | may be used at a time.                                     |
   +------------------------------------------------------------+