ABIT COMPUTER CORPORATION
=========================

   PE5 (REV. 1.2)

   Processor    Pentium                                           
   Processor    75/90/100/120MHz                                  
   Speed        
   Chip Set     OPTI                                              
   Max. Onboard 128MB                                             
   DRAM         
   Cache        256/512/1024KB                                    
   BIOS         Award                                             
   Dimensions   330mm x 218mm                                     
   I/O Options  32-bit PCI slots (3), floppy drive interface,     
                green PC connector, IDE interfaces (2), parallel  
                port, PS/2 mouse port, serial ports (2)           
   NPU Options  None                                              

<gopher://bitreich.org/I/th99/m/S-T/35079-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose              | Location | Purpose       | Location |
   |----------------------+----------+---------------+----------|
   | IDE interface        |   CN1    | Speaker       |   JW1    |
   | (secondary)          |          |               |          |
   |----------------------+----------+---------------+----------|
   | IDE interface        |   CN2    | Power LED &   |   JW2    |
   | (primary)            |          | keylock       |          |
   |----------------------+----------+---------------+----------|
   | Parallel port        |   CN3    | Turbo LED     |   JW3    |
   |----------------------+----------+---------------+----------|
   | Floppy drive         |   CN4    | Turbo switch  |   JW4    |
   | interface            |          |               |          |
   |----------------------+----------+---------------+----------|
   | PS/2 mouse port      |   CN5    | Reset switch  |   JW5    |
   |----------------------+----------+---------------+----------|
   | Serial port 1        |   CN6    | IDE interface |   JW6    |
   |                      |          | LED           |          |
   |----------------------+----------+---------------+----------|
   | Serial port 2        |   CN7    | IDE interface |   JW7    |
   |                      |          | LED           |          |
   |----------------------+----------+---------------+----------|
   | Green PC connector   |   JP37   | 32-bit PCI    |  PC1 -   |
   |                      |          | slots         |   PC3    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP2   |    N/A     |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | CPU type select STD & VR         |  JP25  |    Open    |
   |---+----------------------------------+--------+------------|
   |   | CPU type select VRE              |  JP25  |   Closed   |
   |---+----------------------------------+--------+------------|
   |>> | Monitor type select color        |  JP40  |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select monochrome   |  JP40  |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | CMOS memory normal operation     |  JP45  | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | CMOS memory clear                |  JP45  | pins 2 & 3 |
   |   |                                  |        |   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) 256K x 36    |   (2) 512K x 36    |
   |------------------+--------------------+--------------------|
   |       8MB        |    (2) 1M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       8MB        |   (2) 512K x 36    |   (2) 512K x 36    |
   |------------------+--------------------+--------------------|
   |       10MB       |   (2) 256K x 36    |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       12MB       |   (2) 512K x 36    |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       16MB       |    (2) 2M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       16MB       |    (2) 1M x 36     |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       18MB       |   (2) 256K x 36    |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       20MB       |   (2) 512K x 36    |    (2) 2M 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) 256K x 36    |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       36MB       |   (2) 512K x 36    |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       40MB       |    (2) 1M x 36     |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       48MB       |    (2) 2M x 36     |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       64MB       |    (2) 8M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       64MB       |    (2) 4M x 36     |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       66MB       |   (2) 256K x 36    |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |       68MB       |   (2) 512K x 36    |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |       72MB       |    (2) 1M x 36     |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |       80MB       |    (2) 2M x 36     |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |       96MB       |    (2) 4M x 36     |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |      128MB       |    (2) 8M x 36     |    (2) 8M x 36     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   |                  Type                  |       JP61        |
   |----------------------------------------+-------------------|
   |   Bank 0 = single side SIMM Bank 1 =   | pins 1 & 2, 3 & 4 |
   |       single or double side SIMM       |      closed       |
   |----------------------------------------+-------------------|
   |   Bank 0 = double side SIMM Bank 1 =   | pins 2 & 3, 4 & 5 |
   |       single or double side SIMM       |      closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |        TAG         |
   |------------------+--------------------+--------------------|
   |      256KB       |    (8) 32K x 8     |     (1) 8K x 8     |
   |------------------+--------------------+--------------------|
   |      512KB       |    (8) 64K x 8     |    (1) 32K x 8     |
   |------------------+--------------------+--------------------|
   |       1MB        |    (8) 128K x 8    |    (1) 32K x 8     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |            Size            |             JP36              |
   |----------------------------+-------------------------------|
   |           256KB            |   pins 2 & 3, 5 & 6 closed    |
   |----------------------------+-------------------------------|
   |           512KB            |   pins 1 & 2, 5 & 6 closed    |
   |----------------------------+-------------------------------|
   |            1MB             |   pins 1 & 2, 4 & 5 closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   |     Speed     |     JP31     |     JP32     |     JP34     |
   |---------------+--------------+--------------+--------------|
   |     75MHz     |     Open     |     Open     |     Open     |
   |---------------+--------------+--------------+--------------|
   |     90MHz     |    Closed    |     Open     |     Open     |
   |---------------+--------------+--------------+--------------|
   |    100MHz     |     Open     |    Closed    |     Open     |
   |---------------+--------------+--------------+--------------|
   |    120MHz     |    Closed    |     Open     |    Closed    |
   +------------------------------------------------------------+