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       # COMPUTREND SYSTEMS, INC.
       
          PREMIO PCI 486AL3
       
       Processor  80486SX/SL80486SX/AM486DX/80486DX/SL80486DX/TICXDX2/CX486DX2/               
                  AM486DX2/(SL)AM486DX2/80486DX2/SL80486DX2/AM486DX4/80486DX4/ P24D/P24T      
       Processor  25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/100(internal)/ 
       Speed      120(internal)/133(internal)/160(internal)MHz                                
       Chip Set   ALI                                                                         
       Max.       64MB                                                                        
       Onboard    
       DRAM       
       Cache      128/256KB                                                                   
       BIOS       AMI                                                                         
       Dimensions 220mm x 220mm                                                               
       I/O        32-bit PCI slots (3), floppy drive interface, green PC connector, IDE       
       Options    interfaces (2), parallel port, serial ports (2)                             
       NPU        None                                                                        
       Options    
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose            | Location | Purpose       |  Location  |
          |--------------------+----------+---------------+------------|
          | Serial port 1      |   CN1    | Power LED &   | JFP pins 1 |
          |                    |          | keylock       |    - 5     |
          |--------------------+----------+---------------+------------|
          | Serial port 2      |   CN2    | Speaker       | JFP pins 7 |
          |                    |          |               |    - 10    |
          |--------------------+----------+---------------+------------|
          | Floppy drive       |   CN3    | Turbo LED     |  JFP pins  |
          | interface          |          |               |  12 & 13   |
          |--------------------+----------+---------------+------------|
          | Parallel port      |   CN4    | Turbo switch  |  JFP pins  |
          |                    |          |               |  15 - 17   |
          |--------------------+----------+---------------+------------|
          | IDE interface 2    |   CN5    | Reset switch  |  JFP pins  |
          |                    |          |               |  19 & 20   |
          |--------------------+----------+---------------+------------|
          | IDE interface 1    |   CN6    | IDE interface |    JFPA    |
          |                    |          | LED           |            |
          |--------------------+----------+---------------+------------|
          | Chassis fan power  |   FAN    | Green PC      |    JG1     |
          |                    |          | connector     |            |
          |--------------------+----------+---------------+------------|
          | External battery   |   JBAT   | 32-bit PCI    | PC1 - PC3  |
          |                    |          | slots         |            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function               | Jumper  |  Position  |
          |-------------------------------------+---------+------------|
          | » | Parallel port IRQ select 378H   |  JIRQ   | Pins 1 & 2 |
          |   | or 3BCH                         |         |   closed   |
          |---+---------------------------------+---------+------------|
          |   | Parallel port IRQ select 278H   |  JIRQ   | Pins 2 & 3 |
          |   |                                 |         |   closed   |
          |---+---------------------------------+---------+------------|
          | » | Factory configured - do not     |   JS3   |    N/A     |
          |   | alter                           |         |            |
          |------------------------------------------------------------|
          | Note: JIRQ may not be present on all boards. The location  |
          | is unidentified.                                           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |    Bank 2     |
          |------------+---------------+---------------+---------------|
          |    4MB     |  (1) 1M x 36  |     NONE      |     NONE      |
          |------------+---------------+---------------+---------------|
          |    8MB     |  (1) 1M x 36  |  (1) 1M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    8MB     |  (1) 2M x 36  |     NONE      |     NONE      |
          |------------+---------------+---------------+---------------|
          |    12MB    |  (1) 1M x 36  |  (1) 1M x 36  |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    12MB    |  (1) 1M x 36  |  (1) 2M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    16MB    |  (1) 4M x 36  |     NONE      |     NONE      |
          |------------+---------------+---------------+---------------|
          |    16MB    |  (1) 2M x 36  |  (1) 2M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    16MB    |  (1) 1M x 36  |  (1) 2M x 36  |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    20MB    |  (1) 1M x 36  |  (1) 4M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    24MB    |  (1) 1M x 36  |  (1) 1M x 36  |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    24MB    |  (1) 4M x 36  |  (1) 2M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    32MB    |  (1) 4M x 36  |  (1) 4M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    32MB    |  (1) 8M x 36  |     NONE      |     NONE      |
          |------------+---------------+---------------+---------------|
          |    36MB    |  (1) 1M x 36  |  (1) 8M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    40MB    |  (1) 2M x 36  |  (1) 8M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    40MB    |  (1) 4M x 36  |  (1) 2M x 36  |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    40MB    |  (1) 1M x 36  |  (1) 8M x 36  |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    48MB    |  (1) 4M x 36  |  (1) 4M x 36  |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    48MB    |  (1) 4M x 36  |  (1) 8M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    64MB    |  (1) 8M x 36  |  (1) 8M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    64MB    |  (1) 4M x 36  |  (1) 8M x 36  |  (1) 4M x 36  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |   Size    |   Bank 0    |   Bank 1    |        TAG         |
          |-----------+-------------+-------------+--------------------|
          |   128KB   | (4) 32K x 8 |    NONE     | (1) 8K/16K/32K x 8 |
          |-----------+-------------+-------------+--------------------|
          | 256KB (A) | (4) 32K x 8 | (4) 32K x 8 | (1) 8K/16K/32K x 8 |
          |-----------+-------------+-------------+--------------------|
          | 256KB (B) | (4) 64K x 8 |    NONE     | (1) 8K/16K/32K x 8 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |   Size    |      JS1       |      JS2      |      JS4      |
          |-----------+----------------+---------------+---------------|
          |   128KB   |   Pins 1 & 2   |  Pins 1 & 2   |  Pins 2 & 3   |
          |           |     closed     |    closed     |    closed     |
          |-----------+----------------+---------------+---------------|
          | 256KB (A) |   Pins 2 & 3   |  Pins 1 & 2   |  Pins 1 & 2   |
          |           |     closed     |    closed     |    closed     |
          |-----------+----------------+---------------+---------------|
          | 256KB (B) |   Pins 1 & 2   |  Pins 1 & 2   |  Pins 1 & 2   |
          |           |     closed     |    closed     |    closed     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |      Type       |   JC1    |  JC2   | JC3  |  JC4  |  JC5  |
          |-----------------+----------+--------+------+-------+-------|
          |     80486SX     |   Open   |  Open  | Open | 1 & 2 | 2 & 3 |
          |-----------------+----------+--------+------+-------+-------|
          |    SL80486SX    |   Open   |  Open  | Open | 1 & 2 | 2 & 3 |
          |-----------------+----------+--------+------+-------+-------|
          |     AM486DX     |   Open   |  Open  | Open | 2 & 3 | 1 & 2 |
          |-----------------+----------+--------+------+-------+-------|
          |     80486DX     |   Open   |  Open  | Open | 2 & 3 | 1 & 2 |
          |-----------------+----------+--------+------+-------+-------|
          |    SL80486DX    |   Open   |  Open  | Open | 2 & 3 | 1 & 2 |
          |-----------------+----------+--------+------+-------+-------|
          |     ticxdx2     |   Open   | Closed | Open | 2 & 3 | 1 & 2 |
          |-----------------+----------+--------+------+-------+-------|
          |    CX486DX2     |   Open   | Closed | Open | 2 & 3 | 1 & 2 |
          |-----------------+----------+--------+------+-------+-------|
          |    AM486DX2     |   Open   |  Open  | Open | 2 & 3 | 1 & 2 |
          |-----------------+----------+--------+------+-------+-------|
          |  (SL)AM486DX2   |   Open   |  Open  | Open | 2 & 3 | 1 & 2 |
          |-----------------+----------+--------+------+-------+-------|
          |  (SL)AM486DX2   | 1 & 2, 3 |  Open  | Open | 2 & 3 | 1 & 2 |
          |      (WB)       |   & 4    |        |      |       |       |
          |-----------------+----------+--------+------+-------+-------|
          |    80486DX2     |   Open   |  Open  | Open | 2 & 3 | 1 & 2 |
          |-----------------+----------+--------+------+-------+-------|
          |   SL80486DX2    |   Open   |  Open  | Open | 2 & 3 | 1 & 2 |
          |-----------------+----------+--------+------+-------+-------|
          |    AM486DX4     |   Open   |  Open  | Open | 2 & 3 | 1 & 2 |
          |-----------------+----------+--------+------+-------+-------|
          |  AM486DX4 (WB)  | 1 & 2, 3 |  Open  | Open | 2 & 3 | 1 & 2 |
          |                 |   & 4    |        |      |       |       |
          |-----------------+----------+--------+------+-------+-------|
          |    80486DX4     |   Open   |  Open  | Open | 2 & 3 | 1 & 2 |
          |-----------------+----------+--------+------+-------+-------|
          |      P24D       | 1 & 2, 3 |  Open  | Open | 2 & 3 | 1 & 2 |
          |                 |   & 4    |        |      |       |       |
          |-----------------+----------+--------+------+-------+-------|
          |      P24T       | 1 & 2, 3 |  Open  | Open | 2 & 3 | 1 & 2 |
          |                 |   & 4    |        |      |       |       |
          |------------------------------------------------------------|
          | Note: Pins designated should be in the closed position.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               CPU TYPE CONFIGURATION (CON’T)               |
          |------------------------------------------------------------|
          |     Type      |       RN1        |    RN2     |    RN3     |
          |---------------+------------------+------------+------------|
          |    80486SX    |   pins 1 - 10    |    Not     |    Not     |
          |               |    installed     | installed  | installed  |
          |---------------+------------------+------------+------------|
          |   SL80486SX   |   pins 3 - 12    |    Not     |    Not     |
          |               |    installed     | installed  | installed  |
          |---------------+------------------+------------+------------|
          |    AM486DX    |   pins 1 - 10    |    Not     |    Not     |
          |               |    installed     | installed  | installed  |
          |---------------+------------------+------------+------------|
          |    80486DX    |   pins 1 - 10    |    Not     |    Not     |
          |               |    installed     | installed  | installed  |
          |---------------+------------------+------------+------------|
          |   SL80486DX   |   pins 3 - 12    |    Not     |    Not     |
          |               |    installed     | installed  | installed  |
          |---------------+------------------+------------+------------|
          |    ticxdx2    |  Not installed   | Installed  |    Not     |
          |               |                  |            | installed  |
          |---------------+------------------+------------+------------|
          |   CX486DX2    |  Not installed   | Installed  |    Not     |
          |               |                  |            | installed  |
          |---------------+------------------+------------+------------|
          |   AM486DX2    |   pins 1 - 10    |    Not     |    Not     |
          |               |    installed     | installed  | installed  |
          |---------------+------------------+------------+------------|
          | (SL)AM486DX2  |   pins 1 - 10    |    Not     |    Not     |
          |               |    installed     | installed  | installed  |
          |---------------+------------------+------------+------------|
          | (SL)AM486DX2  |   pins 5 - 14    |    Not     |    Not     |
          |     (WB)      |    installed     | installed  | installed  |
          |---------------+------------------+------------+------------|
          |   80486DX2    |   pins 1 - 10    |    Not     |    Not     |
          |               |    installed     | installed  | installed  |
          |---------------+------------------+------------+------------|
          |  SL80486DX2   |   pins 3 - 12    |    Not     |    Not     |
          |               |    installed     | installed  | installed  |
          |---------------+------------------+------------+------------|
          |   AM486DX4    |   pins 1 - 10    |    Not     |    Not     |
          |               |    installed     | installed  | installed  |
          |---------------+------------------+------------+------------|
          | AM486DX4 (WB) |   pins 5 - 14    |    Not     |    Not     |
          |               |    installed     | installed  | installed  |
          |---------------+------------------+------------+------------|
          |   80486DX4    |   pins 3 - 12    |    Not     |    Not     |
          |               |    installed     | installed  | installed  |
          |---------------+------------------+------------+------------|
          |     P24D      |   pins 5 - 14    |    Not     |    Not     |
          |               |    installed     | installed  | installed  |
          |---------------+------------------+------------+------------|
          |     P24T      |   pins 5 - 14    |    Not     |    Not     |
          |               |    installed     | installed  | installed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |  Speed  |           JK1           |          JK2           |
          |---------+-------------------------+------------------------|
          |  25MHz  |          Open           |   Pins 1 & 2 closed    |
          |---------+-------------------------+------------------------|
          |  33MHz  |    Pins 1 & 2, 3 & 4    |   Pins 1 & 2 closed    |
          |         |         closed          |                        |
          |---------+-------------------------+------------------------|
          |  40MHz  |    Pins 1 & 2 closed    |   Pins 2 & 3, 4 & 5    |
          |         |                         |         closed         |
          |---------+-------------------------+------------------------|
          | 50iMHz  |          Open           |   Pins 1 & 2 closed    |
          |---------+-------------------------+------------------------|
          | 66iMHz  |    Pins 1 & 2, 3 & 4    |   Pins 1 & 2 closed    |
          |         |         closed          |                        |
          |---------+-------------------------+------------------------|
          | 75iMHz  |          Open           |   Pins 1 & 2 closed    |
          |---------+-------------------------+------------------------|
          | 80iMHz  |    Pins 1 & 2 closed    |   Pins 2 & 3, 4 & 5    |
          |         |                         |         closed         |
          |---------+-------------------------+------------------------|
          | 100iMHz |    Pins 1 & 2, 3 & 4    |   Pins 1 & 2 closed    |
          |         |         closed          |                        |
          |---------+-------------------------+------------------------|
          | 120iMHz |    Pins 1 & 2 closed    |   Pins 2 & 3, 4 & 5    |
          |         |                         |         closed         |
          |---------+-------------------------+------------------------|
          | 133iMHz |    Pins 1 & 2, 3 & 4    |   Pins 1 & 2 closed    |
          |         |         closed          |                        |
          |---------+-------------------------+------------------------|
          | 160iMHz |    Pins 1 & 2 closed    |   Pins 2 & 3, 4 & 5    |
          |         |                         |         closed         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CPU VOLTAGE CONFIGURATION                  |
          |------------------------------------------------------------|
          |   Voltage   |    JP1     |               JV1               |
          |-------------+------------+---------------------------------|
          | »  |   3v   |    Open    |              Open               |
          |----+--------+------------+---------------------------------|
          |    |   4v   |   Closed   |              Open               |
          |----+--------+------------+---------------------------------|
          |    |   5v   |    Open    | Pins 1 & 2, 3 & 4, 5 & 6 closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DMA CONFIGURATION                      |
          |------------------------------------------------------------|
          |       DMA        |        JP3         |        JP4         |
          |------------------+--------------------+--------------------|
          |      DMA 1       | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
          |------------------+--------------------+--------------------|
          |      DMA 3       | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
          +------------------------------------------------------------+