ACER, INC.
==========

   AP5V

   Device Type      Mainboard                                     
   Processor        Pentium                                       
   Processor Speed  75/90/100/120/133/150/166/200MHz              
   Chip Set         Intel 430VX                                   
   Video Chip Set   None                                          
   Maximum Onboard  128MB (EDO & SDRAM supported)                 
   Memory           
   Maximum Video    None                                          
   Memory           
   Cache            256/512KB                                     
   BIOS             AMI                                           
   Dimensions       280mm x 220mm                                 
   I/O Options      32-bit PCI slots (4), floppy drive interface, 
                    IDE interfaces (2), parallel port, PS/2 mouse 
                    port, serial ports (2), VRM connector, USB    
                    connector                                     

<gopher://bitreich.org/I/th99/m/A-B/35655-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Front panel       |    C1    | IDE interface 1  |   CN6    |
   | connector         |          |                  |          |
   |-------------------+----------+------------------+----------|
   | IDE interface LED |    C2    | PS/2 mouse       |   CN7    |
   |                   |          | interface        |          |
   |-------------------+----------+------------------+----------|
   | Serial port 1     |   CN1    | Chassis fan      |   CN12   |
   |                   |          | power            |          |
   |-------------------+----------+------------------+----------|
   | Serial port 2     |   CN2    | 32-bit PCI slots |  PC1 -   |
   |                   |          |                  |   PC4    |
   |-------------------+----------+------------------+----------|
   | Parallel port     |   CN3    | USB connector    |   USB    |
   |-------------------+----------+------------------+----------|
   | Floppy drive      |   CN4    | VRM connector    |   VRM    |
   | interface         |          |                  |          |
   |-------------------+----------+------------------+----------|
   | IDE interface 2   |   CN5    |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function               | Label |   Position   |
   |-------------------------------------+-------+--------------|
   |>> | CMOS memory normal operation    | JP12  |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | CMOS memory clear               | JP12  |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | On board I/O enabled            | JP13  |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | On board I/O disabled           | JP13  |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | ISA clock select CLK/3          | JP14  |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | ISA clock select CLK/4          | JP14  |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | PS/2 mouse enabled              | JP15  |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | PS/2 mouse disabled             | JP15  |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Flash BIOS voltage select 5v    | JP16  |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | Flash BIOS voltage select 12v   | JP16  |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     | JP17  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     | JP18  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     | JP20  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     | JP21  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     | JP22  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     | JP23  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Keyboard clock select 8MHz      | JP24  |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | Keyboard clock select 12MHz     | JP24  |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIMM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       8MB        |    (1) 1M x 64     |        None        |
   |------------------+--------------------+--------------------|
   |       16MB       |    (1) 2M x 64     |        None        |
   |------------------+--------------------+--------------------|
   |       16MB       |    (1) 1M x 64     |    (1) 1M x 64     |
   |------------------+--------------------+--------------------|
   |       24MB       |    (1) 2M x 64     |    (1) 1M x 64     |
   |------------------+--------------------+--------------------|
   |       32MB       |    (1) 4M x 64     |        None        |
   |------------------+--------------------+--------------------|
   |       32MB       |    (1) 2M x 64     |    (1) 2M x 64     |
   |------------------+--------------------+--------------------|
   |       40MB       |    (1) 4M x 64     |    (1) 1M x 64     |
   |------------------+--------------------+--------------------|
   |       48MB       |    (1) 4M x 64     |    (1) 2M x 64     |
   |------------------+--------------------+--------------------|
   |       64MB       |    (1) 8M x 64     |        None        |
   |------------------+--------------------+--------------------|
   |       64MB       |    (1) 4M x 64     |    (1) 4M x 64     |
   |------------------+--------------------+--------------------|
   |       72MB       |    (1) 8M x 64     |    (1) 1M x 64     |
   |------------------+--------------------+--------------------|
   |       80MB       |    (1) 8M x 64     |    (1) 2M x 64     |
   |------------------+--------------------+--------------------|
   |       96MB       |    (1) 8M x 64     |    (1) 4M x 64     |
   |------------------+--------------------+--------------------|
   |      128MB       |    (1) 8M x 64     |    (1) 8M x 64     |
   |------------------------------------------------------------|
   |      Note: Board accepts EDO & SDRAM memory.               |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIMM CONFIGURATION                     |
   |------------------------------------------------------------|
   |   Type    |           JP8           |         JP9          |
   |-----------+-------------------------+----------------------|
   |>> | SDRAM |          Open           |         Open         |
   |---+-------+-------------------------+----------------------|
   |   |  EDO  | Pins 1 & 2, 3 & 4, 5 &  | Pins 1 & 2, 3 & 4, 5 |
   |   |       |        6 closed         |      & 6 closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |            Size            |            Bank 0             |
   |----------------------------+-------------------------------|
   |           256KB            |         (2) 32K x 32          |
   |----------------------------+-------------------------------|
   |           512KB            |         (2) 64K x 32          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CPU SPEED SELECTION                     |
   |------------------------------------------------------------|
   |  CPU   | Clock  | Multiplier |  JP1  |  JP2  | JP3  | JP4  |
   | speed  | speed  |            |       |       |      |      |
   |--------+--------+------------+-------+-------+------+------|
   | 75MHz  | 50MHz  |    1.5x    | 1 & 2 | 1 & 2 | 1 &  | 1 &  |
   |        |        |            |       |       |  2   |  2   |
   |--------+--------+------------+-------+-------+------+------|
   | 90MHz  | 60MHz  |    1.5x    | 1 & 2 | 1 & 2 | 2 &  | 1 &  |
   |        |        |            |       |       |  3   |  2   |
   |--------+--------+------------+-------+-------+------+------|
   | 100MHz | 66MHz  |    1.5x    | 1 & 2 | 1 & 2 | 1 &  | 2 &  |
   |        |        |            |       |       |  2   |  3   |
   |--------+--------+------------+-------+-------+------+------|
   | 120MHz | 60MHz  |     2x     | 1 & 2 | 2 & 3 | 2 &  | 1 &  |
   |        |        |            |       |       |  3   |  2   |
   |--------+--------+------------+-------+-------+------+------|
   | 133MHz | 66MHz  |     2x     | 1 & 2 | 2 & 3 | 1 &  | 2 &  |
   |        |        |            |       |       |  2   |  3   |
   |--------+--------+------------+-------+-------+------+------|
   | 150MHz | 60MHz  |    2.5x    | 2 & 3 | 2 & 3 | 2 &  | 1 &  |
   |        |        |            |       |       |  3   |  2   |
   |--------+--------+------------+-------+-------+------+------|
   | 166MHz | 66MHz  |    2.5x    | 2 & 3 | 2 & 3 | 1 &  | 2 &  |
   |        |        |            |       |       |  2   |  3   |
   |--------+--------+------------+-------+-------+------+------|
   | 200MHz | 66MHz  |     3x     | 2 & 3 | 1 & 2 | 1 &  | 2 &  |
   |        |        |            |       |       |  2   |  3   |
   |------------------------------------------------------------|
   | Note: Pins designated should be in the closed position.    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     CPU TYPE SELECTION                     |
   |------------------------------------------------------------|
   |   Type   |          JP5           |          JP6           |
   |----------+------------------------+------------------------|
   |>> | P54C | Pins 1 & 2, 3 & 4, 5 & | Pins 1 & 2, 3 & 4, 5 & |
   |   |      |        6 closed        |        6 closed        |
   |---+------+------------------------+------------------------|
   |   | P55C |          Open          |          Open          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU VOLTAGE SELECTION                    |
   |------------------------------------------------------------|
   |          Voltage           |              JP7              |
   |----------------------------+-------------------------------|
   |           3.45v            |       Pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   |           3.52v            |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   DMA CHANNEL SELECTION                    |
   |------------------------------------------------------------|
   |     Channel      |        JP10        |        JP11        |
   |------------------+--------------------+--------------------|
   |    |      1      | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   |----+-------------+--------------------+--------------------|
   |>>  |      3      | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   +------------------------------------------------------------+