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

   AP5CS

   DUNNET INTERNATIONAL TRADING COMPANY

   Widoshi Pentium 75,90,100,120,133

   Processor    Pentium                                           
   Processor    75/90/100/120MHz                                  
   Speed        
   Chip Set     SIS                                               
   Max. Onboard 128MB                                             
   DRAM         
   Cache        256/512/1024KB                                    
   BIOS         Award                                             
   Dimensions   330mm x 218mm                                     
   I/O Options  32-bit PCI slots (4), floppy drive interface,     
                green PC connector, IDE interfaces (2), parallel  
                port, serial ports (2)                            
   NPU Options  None                                              

<gopher://bitreich.org/I/th99/m/C-D/32816-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose            | Location | Purpose       |  Location  |
   |--------------------+----------+---------------+------------|
   | Chassis fan power  |   FAN    | Green PC      |    JP4     |
   |                    |          | connector     |            |
   |--------------------+----------+---------------+------------|
   | Parallel port      |   CN1    | Power LED &   | JP21 pins  |
   |                    |          | keylock       |   1 - 5    |
   |--------------------+----------+---------------+------------|
   | Serial port 2      |   CN2    | Speaker       | JP21 pins  |
   |                    |          |               |   7 - 10   |
   |--------------------+----------+---------------+------------|
   | Serial port 1      |   CN3    | Turbo LED     | JP21 pins  |
   |                    |          |               |  12 - 13   |
   |--------------------+----------+---------------+------------|
   | Floppy drive       |   CN4    | Turbo switch  | JP21 pins  |
   | interface          |          |               |  15 - 17   |
   |--------------------+----------+---------------+------------|
   | IDE interface      |   CN5    | Reset switch  | JP21 pins  |
   | (secondary)        |          |               |  19 - 20   |
   |--------------------+----------+---------------+------------|
   | IDE interface      |   CN6    | 32-bit PCI    | PC1 - PC4  |
   | (primary)          |          | slots         |            |
   |--------------------+----------+---------------+------------|
   | External battery   |   JP1    |               |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | CMOS memory normal operation     |  JP2   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | CMOS memory clear                |  JP2   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP3   | pins 1 & 2 |
   |   | alter                            |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Floppy drive interface enabled   |  JP7   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Floppy drive interface disabled  |  JP7   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP12  | pins 2 & 3 |
   |   | alter                            |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP18  | pins 2 & 3 |
   |   | alter                            |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP19  | pins 2 & 3 |
   |   | alter                            |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  JP20  | pins 1 & 2 |
   |   | alter                            |        |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       2MB        |   (2) 256K x 36    |        NONE        |
   |------------------+--------------------+--------------------|
   |       4MB        |   (2) 256K x 36    |   (2) 256K x 36    |
   |------------------+--------------------+--------------------|
   |       4MB        |   (2) 512K x 36    |        NONE        |
   |------------------+--------------------+--------------------|
   |       8MB        |   (2) 512K x 36    |   (2) 512K x 36    |
   |------------------+--------------------+--------------------|
   |       8MB        |    (2) 1M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       16MB       |    (2) 1M x 36     |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       16MB       |    (2) 2M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       20MB       |   (2) 512K x 36    |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       32MB       |    (2) 2M x 36     |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       32MB       |    (2) 4M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       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) 4M x 36     |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |       64MB       |    (2) 8M x 36     |        NONE        |
   |------------------+--------------------+--------------------|
   |       80MB       |    (2) 2M x 36     |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |      128MB       |    (2) 8M x 36     |    (2) 8M x 36     |
   |------------------+--------------------+--------------------|
   |      128MB       |    (2) 16M x 36    |        NONE        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |    Bank 0     |    Bank 1     |      TAG      |
   |------------+---------------+---------------+---------------|
   |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
   |------------+---------------+---------------+---------------|
   |   512KB    |  (4) 64K x 8  |  (4) 64K x 8  |  (1) 32K x 8  |
   |------------+---------------+---------------+---------------|
   |    1MB     | (4) 128K x 8  | (4) 128K x 8  |  (1) 32K x 8  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |       Size       |        JP14        |        JP16        |
   |------------------+--------------------+--------------------|
   |      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  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CPU SPEED CONFIGURATION                   |
   |------------------------------------------------------------|
   | Speed  |      JP10       |      JP11      |      JP17      |
   |--------+-----------------+----------------+----------------|
   | 75MHz  |   pins 1 & 2    |   pins 1 & 2   |   pins 1 & 2   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   | 90MHz  |   pins 1 & 2    |   pins 2 & 3   |   pins 1 & 2   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   | 100MHz |   pins 2 & 3    |   pins 2 & 3   |   pins 1 & 2   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   | 120MHz |   pins 1 & 2    |   pins 2 & 3   |   pins 2 & 3   |
   |        |     closed      |     closed     |     closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     BIOS CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Type       |        JP13        |        JP15        |
   |------------------+--------------------+--------------------|
   |      Flash       | pins 1 & 2 closed  | pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |      EEPROM      | pins 2 & 3 closed  | pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DMA CONFIGURATION                      |
   |------------------------------------------------------------|
   |       DMA        |        JP5         |        JP6         |
   |------------------+--------------------+--------------------|
   |       DMA1       | pins 2 & 3 closed  | pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |       DMA3       | pins 1 & 2 closed  | pins 1 & 2 closed  |
   +------------------------------------------------------------+