(TXT) View Source
       
       # EFA CORPORATION
       
          486 VIP
       
       Processor  CX486S/AM486SX/SL80486SX/80486SX/CX486S2/AM486DX/CX486DX/           
                  SL80486DX/80486DX/CX486DX2/AM486DX2/SL80486DX2/80486DX2/            
                  80486DX4/P24D/Pentium Overdrive                                     
       Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz 
       Speed      
       Chip Set   Contaq                                                              
       Max.       64MB                                                                
       Onboard    
       DRAM       
       Cache      128/256/512/1024KB                                                  
       BIOS       Award                                                               
       Dimensions 330mm x 218mm                                                       
       I/O        32-bit VESA local bus slots (2), 32-bit PCI slots (4), green PC     
       Options    connector                                                           
       NPU        None                                                                
       Options    
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose            | Location | Purpose         | Location |
          |--------------------+----------+-----------------+----------|
          | External battery   |   J11    | Turbo switch    |   J71    |
          |--------------------+----------+-----------------+----------|
          | Green PC connector |   J13    | Speaker         |   J72    |
          |--------------------+----------+-----------------+----------|
          | Green PC LED       |   J33    | Power LED &     |   J73    |
          |                    |          | keylock         |          |
          |--------------------+----------+-----------------+----------|
          | Reset switch       |   J69    | 32-bit PCI      |  PC1 -   |
          |                    |          | slots           |   PC4    |
          |--------------------+----------+-----------------+----------|
          | Turbo LED          |   J70    | 32-bit VESA     |  SL1 &   |
          |                    |          | local bus slots |   SL2    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | CMOS memory normal operation     |  J12   | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | CMOS memory clear                |  J12   | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Monitor type select color        |  J14   |   Closed   |
          |---+----------------------------------+--------+------------|
          |   | Monitor type select monochrome   |  J14   |    Open    |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  J15   | pins 1 & 2 |
          |   | alter                            |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  J19   | pins 2 & 3 |
          |   | alter                            |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  J20   | pins 1 & 2 |
          |   | alter                            |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  J22   | pins 2 & 3 |
          |   | alter                            |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  J23   | pins 1 & 2 |
          |   | alter                            |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  J25   | pins 1 & 2 |
          |   | alter                            |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  J32   |    Open    |
          |   | alter                            |        |            |
          |---+----------------------------------+--------+------------|
          | » | CPU speed select normal speed    |  J76   |    Open    |
          |---+----------------------------------+--------+------------|
          |   | CPU speed select slow speed      |  J76   |   Closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size |    Bank 0     |   Bank 1    |   Bank 2   |  Bank 3  |
          |------+---------------+-------------+------------+----------|
          | 1MB  | (1) 256K x 36 |    NONE     |    NONE    |   NONE   |
          |------+---------------+-------------+------------+----------|
          | 2MB  | (1) 256K x 36 | (1) 256K x  |    NONE    |   NONE   |
          |      |               |     36      |            |          |
          |------+---------------+-------------+------------+----------|
          | 2MB  | (1) 512K x 36 |    NONE     |    NONE    |   NONE   |
          |------+---------------+-------------+------------+----------|
          | 4MB  | (1) 256K x 36 | (1) 256K x  | (1) 512K x |   NONE   |
          |      |               |     36      |     36     |          |
          |------+---------------+-------------+------------+----------|
          | 4MB  | (1) 512K x 36 |    NONE     | (1) 512K x |   NONE   |
          |      |               |             |     36     |          |
          |------+---------------+-------------+------------+----------|
          | 4MB  |  (1) 1M x 36  |    NONE     |    NONE    |   NONE   |
          |------+---------------+-------------+------------+----------|
          | 5MB  | (1) 256K x 36 | (1) 1M x 36 |    NONE    |   NONE   |
          |------+---------------+-------------+------------+----------|
          | 6MB  | (1) 256K x 36 | (1) 256K x  |  (1) 1M x  |   NONE   |
          |      |               |     36      |     36     |          |
          |------+---------------+-------------+------------+----------|
          | 6MB  | (1) 512K x 36 |    NONE     |  (1) 1M x  |   NONE   |
          |      |               |             |     36     |          |
          |------+---------------+-------------+------------+----------|
          | 8MB  |  (1) 1M x 36  | (1) 1M x 36 |    NONE    |   NONE   |
          |------+---------------+-------------+------------+----------|
          | 8MB  |  (1) 2M x 36  |    NONE     |    NONE    |   NONE   |
          |------+---------------+-------------+------------+----------|
          | 10MB | (1) 256K x 36 | (1) 256K x  |  (1) 1M x  | (1) 1M x |
          |      |               |     36      |     36     |    36    |
          |------+---------------+-------------+------------+----------|
          | 12MB |  (1) 1M x 36  | (1) 1M x 36 |  (1) 1M x  |   NONE   |
          |      |               |             |     36     |          |
          |------+---------------+-------------+------------+----------|
          | 12MB |  (1) 1M x 36  |    NONE     |  (1) 2M x  |   NONE   |
          |      |               |             |     36     |          |
          |------+---------------+-------------+------------+----------|
          | 16MB |  (1) 1M x 36  | (1) 1M x 36 |  (1) 2M x  |   NONE   |
          |      |               |             |     36     |          |
          |------+---------------+-------------+------------+----------|
          | 16MB |  (1) 1M x 36  | (1) 1M x 36 |  (1) 1M x  | (1) 1M x |
          |      |               |             |     36     |    36    |
          |------+---------------+-------------+------------+----------|
          | 16MB |  (1) 2M x 36  |    NONE     |  (1) 2M x  |   NONE   |
          |      |               |             |     36     |          |
          |------+---------------+-------------+------------+----------|
          | 16MB |  (1) 4M x 36  |    NONE     |    NONE    |   NONE   |
          |------+---------------+-------------+------------+----------|
          | 17MB | (1) 256K x 36 | (1) 4M x 36 |    NONE    |   NONE   |
          |------+---------------+-------------+------------+----------|
          | 18MB | (1) 256K x 36 | (1) 256K x  |  (1) 4M x  |   NONE   |
          |      |               |     36      |     36     |          |
          |------+---------------+-------------+------------+----------|
          | 18MB | (1) 512K x 36 |    NONE     |  (1) 4M x  |   NONE   |
          |      |               |             |     36     |          |
          |------+---------------+-------------+------------+----------|
          | 20MB |  (1) 1M x 36  | (1) 4M x 36 |    NONE    |   NONE   |
          |------+---------------+-------------+------------+----------|
          | 24MB |  (1) 1M x 36  | (1) 1M x 36 |  (1) 4M x  |   NONE   |
          |      |               |             |     36     |          |
          |------+---------------+-------------+------------+----------|
          | 24MB |  (1) 2M x 36  |    NONE     |  (1) 4M x  |   NONE   |
          |      |               |             |     36     |          |
          |------+---------------+-------------+------------+----------|
          | 32MB |  (1) 4M x 36  | (1) 4M x 36 |    NONE    |   NONE   |
          |------+---------------+-------------+------------+----------|
          | 32MB |  (1) 8M x 36  |    NONE     |    NONE    |   NONE   |
          |------+---------------+-------------+------------+----------|
          | 36MB |  (1) 1M x 36  | (1) 4M x 36 |  (1) 4M x  |   NONE   |
          |      |               |             |     36     |          |
          |------+---------------+-------------+------------+----------|
          | 36MB |  (1) 1M x 36  |    NONE     |  (1) 8M x  |   NONE   |
          |      |               |             |     36     |          |
          |------+---------------+-------------+------------+----------|
          | 40MB |  (1) 1M x 36  | (1) 1M x 36 |  (1) 4M x  | (1) 4M x |
          |      |               |             |     36     |    36    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM CONFIGURATION (CON’T)                 |
          |------------------------------------------------------------|
          | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
          |------+-------------+-------------+------------+------------|
          | 40MB | (1) 2M x 36 |    NONE     |  (1) 8M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 48MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 48MB | (1) 4M x 36 |    NONE     |  (1) 8M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 64MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 4M x  |  (1) 4M x  |
          |      |             |             |     36     |     36     |
          |------+-------------+-------------+------------+------------|
          | 64MB |  (1) 16M x  |    NONE     |    NONE    |    NONE    |
          |      |     36      |             |            |            |
          |------+-------------+-------------+------------+------------|
          | 64MB | (1) 4M x 36 | (1) 4M x 36 |  (1) 8M x  |    NONE    |
          |      |             |             |     36     |            |
          |------+-------------+-------------+------------+------------|
          | 64MB | (1) 8M x 36 |    NONE     |  (1) 8M x  |    NONE    |
          |      |             |             |     36     |            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |      TAG      |
          |------------+---------------+---------------+---------------|
          |   128KB    |  (4) 32K x 8  |     NONE      |  (1) 32K x 8  |
          |------------+---------------+---------------+---------------|
          |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
          |------------+---------------+---------------+---------------|
          |   512KB    | (4) 128K x 8  |     NONE      |  (1) 32K x 8  |
          |------------+---------------+---------------+---------------|
          |    1MB     | (4) 128K x 8  | (4) 128K x 8  | (1) 128K x 8  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          | Size  |     J40     |    J41     |    J42     |    J43     |
          |-------+-------------+------------+------------+------------|
          | 128KB | pins 1 & 2  |    Open    | pins 2 & 3 | pins 1 & 2 |
          |       |   closed    |            |   closed   |   closed   |
          |-------+-------------+------------+------------+------------|
          | 256KB | pins 2 & 3  |    Open    | pins 1 & 2 | pins 1 & 2 |
          |       |   closed    |            |   closed   |   closed   |
          |-------+-------------+------------+------------+------------|
          | 512KB | pins 2 & 3  |    Open    | pins 2 & 3 | pins 2 & 3 |
          |       |   closed    |            |   closed   |   closed   |
          |-------+-------------+------------+------------+------------|
          |  1MB  | pins 2 & 3  | pins 2 & 3 |    Open    | pins 2 & 3 |
          |       |   closed    |   closed   |            |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |    Type    |  J21  |  J47  |  J48  |  J49  |  J50  |  J51  |
          |------------+-------+-------+-------+-------+-------+-------|
          |   CX486S   | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 | Open  | 1 & 2 |
          |------------+-------+-------+-------+-------+-------+-------|
          |  AM486SX   | 1 & 2 | Open  | Open  | 1 & 2 | Open  | Open  |
          |------------+-------+-------+-------+-------+-------+-------|
          | SL80486SX  | 1 & 2 | Open  | Open  | 2 & 3 | Open  | Open  |
          |------------+-------+-------+-------+-------+-------+-------|
          |  80486SX   | 1 & 2 | Open  | Open  | 1 & 2 | Open  | Open  |
          |------------+-------+-------+-------+-------+-------+-------|
          |  CX486S2   | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 | Open  | 1 & 2 |
          |------------+-------+-------+-------+-------+-------+-------|
          |  AM486DX   | 1 & 2 | Open  | Open  | 1 & 2 | 2 & 3 | Open  |
          |------------+-------+-------+-------+-------+-------+-------|
          |  CX486DX   | 2 & 3 | Open  | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 |
          |------------+-------+-------+-------+-------+-------+-------|
          | SL80486DX  | 1 & 2 | Open  | Open  | 2 & 3 | 2 & 3 | Open  |
          |------------+-------+-------+-------+-------+-------+-------|
          |  80486DX   | 1 & 2 | Open  | Open  | 1 & 2 | 2 & 3 | Open  |
          |------------+-------+-------+-------+-------+-------+-------|
          |  CX486DX2  | 2 & 3 | Open  | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 |
          |------------+-------+-------+-------+-------+-------+-------|
          |  AM486DX2  | 1 & 2 | Open  | Open  | 1 & 2 | 2 & 3 | Open  |
          |------------+-------+-------+-------+-------+-------+-------|
          | SL80486DX2 | 1 & 2 | Open  | Open  | 2 & 3 | 2 & 3 | Open  |
          |------------+-------+-------+-------+-------+-------+-------|
          |  80486DX2  | 1 & 2 | Open  | Open  | 1 & 2 | 2 & 3 | Open  |
          |------------+-------+-------+-------+-------+-------+-------|
          |  80486DX4  | 1 & 2 | Open  | Open  | 2 & 3 | 2 & 3 | Open  |
          |    (2x)    |       |       |       |       |       |       |
          |------------+-------+-------+-------+-------+-------+-------|
          |  80486DX4  | 1 & 2 | Open  | Open  | 2 & 3 | 2 & 3 | Open  |
          |   (2.5x)   |       |       |       |       |       |       |
          |------------+-------+-------+-------+-------+-------+-------|
          |  80486DX4  | 1 & 2 | Open  | Open  | 2 & 3 | 2 & 3 | Open  |
          |    (3x)    |       |       |       |       |       |       |
          |------------+-------+-------+-------+-------+-------+-------|
          | P24D (WT)  | 1 & 2 | Open  | Open  | 2 & 3 | 2 & 3 | 2 & 3 |
          |------------+-------+-------+-------+-------+-------+-------|
          | P24D (WB)  | 1 & 2 | Open  | Open  | 2 & 3 | 2 & 3 | 2 & 3 |
          |------------+-------+-------+-------+-------+-------+-------|
          | P24T (WT)  | 1 & 2 | Open  | Open  | 2 & 3 | 1 & 2 | 1 & 2 |
          |------------+-------+-------+-------+-------+-------+-------|
          | P24T (WB)  | 1 & 2 | Open  | Open  | 2 & 3 | 1 & 2 | 1 & 2 |
          |------------------------------------------------------------|
          | Note: Pins desingated should be in the closed position.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               CPU TYPE CONFIGURATION (CON’T)               |
          |------------------------------------------------------------|
          |     Type      |   J52   |  J53   |  J54   |  J55   |  J56  |
          |---------------+---------+--------+--------+--------+-------|
          |    CX486S     |  2 & 3  | 2 & 3  | 4 & 5  | 5 & 6  | 5 & 6 |
          |---------------+---------+--------+--------+--------+-------|
          |    AM486SX    |  2 & 3  |  Open  |  Open  |  Open  | Open  |
          |---------------+---------+--------+--------+--------+-------|
          |   SL80486SX   |  2 & 3  | 1 & 2  | 3 & 4, |  Open  | Open  |
          |               |         |        | 5 & 6  |        |       |
          |---------------+---------+--------+--------+--------+-------|
          |    80486SX    |  2 & 3  |  Open  |  Open  |  Open  | Open  |
          |---------------+---------+--------+--------+--------+-------|
          |    CX486S2    |  2 & 3  | 2 & 3  | 4 & 5  | 5 & 6  | 5 & 6 |
          |---------------+---------+--------+--------+--------+-------|
          |    AM486DX    | 1 & 2,  |  Open  |  Open  |  Open  | Open  |
          |               |  3 & 4  |        |        |        |       |
          |---------------+---------+--------+--------+--------+-------|
          |    CX486DX    | 1 & 2,  | 2 & 3  | 4 & 5  | 5 & 6  | 5 & 6 |
          |               |  3 & 4  |        |        |        |       |
          |---------------+---------+--------+--------+--------+-------|
          |   SL80486DX   | 1 & 2,  | 1 & 2  | 3 & 4, |  Open  | Open  |
          |               |  3 & 4  |        | 5 & 6  |        |       |
          |---------------+---------+--------+--------+--------+-------|
          |    80486DX    | 1 & 2,  |  Open  |  Open  |  Open  | Open  |
          |               |  3 & 4  |        |        |        |       |
          |---------------+---------+--------+--------+--------+-------|
          |   CX486DX2    | 1 & 2,  | 2 & 3  | 4 & 5  | 5 & 6  | 5 & 6 |
          |               |  3 & 4  |        |        |        |       |
          |---------------+---------+--------+--------+--------+-------|
          |   AM486DX2    | 1 & 2,  |  Open  |  Open  |  Open  | Open  |
          |               |  3 & 4  |        |        |        |       |
          |---------------+---------+--------+--------+--------+-------|
          |  SL80486DX2   | 1 & 2,  | 1 & 2  | 3 & 4, |  Open  | Open  |
          |               |  3 & 4  |        | 5 & 6  |        |       |
          |---------------+---------+--------+--------+--------+-------|
          |   80486DX2    | 1 & 2,  |  Open  |  Open  |  Open  | Open  |
          |               |  3 & 4  |        |        |        |       |
          |---------------+---------+--------+--------+--------+-------|
          | 80486DX4 (2x) | 1 & 2,  | 1 & 2  | 3 & 4, |  Open  | 2 & 3 |
          |               |  3 & 4  |        | 5 & 6  |        |       |
          |---------------+---------+--------+--------+--------+-------|
          |   80486DX4    | 1 & 2,  | 1 & 2  | 3 & 4, |  Open  | 4 & 5 |
          |    (2.5x)     |  3 & 4  |        | 5 & 6  |        |       |
          |---------------+---------+--------+--------+--------+-------|
          | 80486DX4 (3x) | 1 & 2,  | 1 & 2  | 3 & 4, |  Open  | 1 & 2 |
          |               |  3 & 4  |        | 5 & 6  |        |       |
          |---------------+---------+--------+--------+--------+-------|
          |   P24D (WT)   | 1 & 2,  | 1 & 2, | 3 & 4, | 1 & 2, | Open  |
          |               |  3 & 4  | 3 & 4  | 5 & 6  | 4 & 5  |       |
          |---------------+---------+--------+--------+--------+-------|
          |   P24D (WB)   | 1 & 2,  | 1 & 2, | 3 & 4, | 2 & 3, | Open  |
          |               |  3 & 4  | 3 & 4  | 5 & 6  | 4 & 5  |       |
          |---------------+---------+--------+--------+--------+-------|
          |   P24T (WT)   | 1 & 2,  | 1 & 2  | 3 & 4, | 1 & 2  | Open  |
          |               |  3 & 4  |        | 5 & 6  |        |       |
          |---------------+---------+--------+--------+--------+-------|
          |   P24T (WB)   | 1 & 2,  | 1 & 2  | 3 & 4, | 3 & 4  | Open  |
          |               |  3 & 4  |        | 5 & 6  |        |       |
          |------------------------------------------------------------|
          | Note: Pins desingated should be in the closed position.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |   Speed    |   J16    |  J24   |   J26   |  J27   |  J28   |
          |------------+----------+--------+---------+--------+--------|
          |   25MHz    |  Closed  | 2 & 3  | Closed  | 1 & 2  | 2 & 3  |
          |------------+----------+--------+---------+--------+--------|
          |   33MHz    |   Open   | 2 & 3  | Closed  | 2 & 3  | 1 & 2  |
          |------------+----------+--------+---------+--------+--------|
          |  40MHz 1   |   Open   | 2 & 3  |  Open   | 1 & 2  | 2 & 3  |
          |------------+----------+--------+---------+--------+--------|
          |  40MHz 2   |   Open   | 1 & 2  |  Open   | 1 & 2  | 2 & 3  |
          |------------+----------+--------+---------+--------+--------|
          |  40MHz 3   |   Open   | 1 & 2  |  Open   | 1 & 2  | 2 & 3  |
          |------------+----------+--------+---------+--------+--------|
          |   50iMHz   |  1 & 2   | 2 & 3  | Closed  | 1 & 2  | 2 & 3  |
          |------------+----------+--------+---------+--------+--------|
          |  50MHz 4   |   Open   | 1 & 2  |  Open   | 2 & 3  | 1 & 2  |
          |------------+----------+--------+---------+--------+--------|
          |  50MHz 5   |   Open   | 1 & 2  |  Open   | 2 & 3  | 1 & 2  |
          |------------+----------+--------+---------+--------+--------|
          |   66iMHz   |   Open   | 2 & 3  | Closed  | 2 & 3  | 1 & 2  |
          |------------+----------+--------+---------+--------+--------|
          |   75iMHz   |  Closed  | 2 & 3  | Closed  | 1 & 2  | 2 & 3  |
          |------------+----------+--------+---------+--------+--------|
          |  100iMHz   |   Open   | 2 & 3  | Closed  | 2 & 3  | 1 & 2  |
          |------------------------------------------------------------|
          |      Note: 1 = PCI 40mhz. 2 = PCI 33mhz & OCS2 =>33mhz. 3  |
          |      = PCI 20mhz & OSC2 =>empty. 4 = PCI 33mhz & OCS2      |
          |      =>33mhz. 5 = PCI 25mhz & OSC2 =>empty. Pins           |
          |      designated should be in the closed postion.           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              CPU SPEED CONFIGURATION (CON’T)               |
          |------------------------------------------------------------|
          |  Speed   |   J29   |   J46   |   J57   |  J58   |   J59    |
          |----------+---------+---------+---------+--------+----------|
          |  25MHz   |  Open   |  Open   |  Open   |  Open  | pins 2 & |
          |          |         |         |         |        | 3 closed |
          |----------+---------+---------+---------+--------+----------|
          |  33MHz   |  Open   |  Open   |  Open   |  Open  | pins 2 & |
          |          |         |         |         |        | 3 closed |
          |----------+---------+---------+---------+--------+----------|
          | 40MHz 1  |  Open   |  Open   | Closed  | Closed | pins 2 & |
          |          |         |         |         |        | 3 closed |
          |----------+---------+---------+---------+--------+----------|
          | 40MHz 2  |  Open   | Closed  | Closed  | Closed | pins 2 & |
          |          |         |         |         |        | 3 closed |
          |----------+---------+---------+---------+--------+----------|
          | 40MHz 3  | Closed  | Closed  | Closed  | Closed | pins 2 & |
          |          |         |         |         |        | 3 closed |
          |----------+---------+---------+---------+--------+----------|
          |  50iMHz  |  Open   |  Open   |  Open   |  Open  | pins 2 & |
          |          |         |         |         |        | 3 closed |
          |----------+---------+---------+---------+--------+----------|
          | 50MHz 4  |  Open   | Closed  | Closed  | Closed | pins 2 & |
          |          |         |         |         |        | 3 closed |
          |----------+---------+---------+---------+--------+----------|
          | 50MHz 5  | Closed  | Closed  | Closed  | Closed | pins 2 & |
          |          |         |         |         |        | 3 closed |
          |----------+---------+---------+---------+--------+----------|
          |  66iMHz  |  Open   |  Open   |  Open   |  Open  | pins 2 & |
          |          |         |         |         |        | 3 closed |
          |----------+---------+---------+---------+--------+----------|
          |  75iMHz  |  Open   |  Open   |  Open   |  Open  | pins 2 & |
          |          |         |         |         |        | 3 closed |
          |----------+---------+---------+---------+--------+----------|
          | 100iMHz  |  Open   |  Open   |  Open   |  Open  | pins 2 & |
          |          |         |         |         |        | 3 closed |
          |------------------------------------------------------------|
          |      Note: 1 = PCI 40mhz. 2 = PCI 33mhz & OCS2 =>33mhz. 3  |
          |      = PCI 20mhz & OSC2 =>empty. 4 = PCI 33mhz & OCS2      |
          |      =>33mhz. 5 = PCI 25mhz & OSC2 =>empty.                |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CPU VOLTAGE CONFIGURATION                  |
          |------------------------------------------------------------|
          |          Voltage           |              J74              |
          |----------------------------+-------------------------------|
          |    3.3v (80486DX4 only)    |   pins 3 & 5, 4 & 6 closed    |
          |----------------------------+-------------------------------|
          |            5.0v            |   pins 1 & 3, 2 & 4 closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                PCI COMPLIANCE CONFIGURATION                |
          |------------------------------------------------------------|
          |             Slot              |            J75             |
          |-------------------------------+----------------------------|
          |      PC1 (PCI compliant)      |    pins 10 & 11 closed     |
          |-------------------------------+----------------------------|
          |    PC1 (Non PCI compliant)    |    pins 11 & 12 closed     |
          |-------------------------------+----------------------------|
          |      PC2 PCI compliant)       |     pins 7 & 8 closed      |
          |-------------------------------+----------------------------|
          |    PC2 (Non PCI compliant)    |     pins 8 & 9 closed      |
          |-------------------------------+----------------------------|
          |      PC3 (PCI compliant)      |     pins 4 & 5 closed      |
          |-------------------------------+----------------------------|
          |    PC3 (Non PCI compliant)    |     pins 5 & 6 closed      |
          |-------------------------------+----------------------------|
          |      PC4 (PCI compliant)      |     pins 1 & 2 closed      |
          |-------------------------------+----------------------------|
          |    PC4 (Non PCI compliant)    |     pins 2 & 3 closed      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                PCI IRQ CONFIGURATION (IRQ3)                |
          |------------------------------------------------------------|
          |             IRQ              |            J31A             |
          |------------------------------+-----------------------------|
          |        PCI compliant         |      pins 1 & 2 closed      |
          |------------------------------+-----------------------------|
          |      Non PCI compliant       |      pins 2 & 3 closed      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                PCI IRQ CONFIGURATION (IRQ4)                |
          |------------------------------------------------------------|
          |             IRQ              |            J31B             |
          |------------------------------+-----------------------------|
          |        PCI compliant         |      pins 1 & 2 closed      |
          |------------------------------+-----------------------------|
          |      Non PCI compliant       |      pins 2 & 3 closed      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                PCI IRQ CONFIGURATION (IRQ5)                |
          |------------------------------------------------------------|
          |             IRQ              |            J31C             |
          |------------------------------+-----------------------------|
          |        PCI compliant         |      pins 1 & 2 closed      |
          |------------------------------+-----------------------------|
          |      Non PCI compliant       |      pins 2 & 3 closed      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                PCI IRQ CONFIGURATION (IRQ6)                |
          |------------------------------------------------------------|
          |             IRQ              |            J31J             |
          |------------------------------+-----------------------------|
          |        PCI compliant         |      pins 1 & 2 closed      |
          |------------------------------+-----------------------------|
          |      Non PCI compliant       |      pins 2 & 3 closed      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                PCI IRQ CONFIGURATION (IRQ7)                |
          |------------------------------------------------------------|
          |             IRQ              |            J31D             |
          |------------------------------+-----------------------------|
          |        PCI compliant         |      pins 1 & 2 closed      |
          |------------------------------+-----------------------------|
          |      Non PCI compliant       |      pins 2 & 3 closed      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                PCI IRQ CONFIGURATION (IRQ9)                |
          |------------------------------------------------------------|
          |             IRQ              |            J31I             |
          |------------------------------+-----------------------------|
          |        PCI compliant         |      pins 1 & 2 closed      |
          |------------------------------+-----------------------------|
          |      Non PCI compliant       |      pins 2 & 3 closed      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               PCI IRQ CONFIGURATION (IRQ10)                |
          |------------------------------------------------------------|
          |             IRQ              |            J31E             |
          |------------------------------+-----------------------------|
          |        PCI compliant         |      pins 1 & 2 closed      |
          |------------------------------+-----------------------------|
          |      Non PCI compliant       |      pins 2 & 3 closed      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               PCI IRQ CONFIGURATION (IRQ11)                |
          |------------------------------------------------------------|
          |             IRQ              |            J31F             |
          |------------------------------+-----------------------------|
          |        PCI compliant         |      pins 1 & 2 closed      |
          |------------------------------+-----------------------------|
          |      Non PCI compliant       |      pins 2 & 3 closed      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               PCI IRQ CONFIGURATION (IRQ12)                |
          |------------------------------------------------------------|
          |             IRQ              |            J31G             |
          |------------------------------+-----------------------------|
          |        PCI compliant         |      pins 1 & 2 closed      |
          |------------------------------+-----------------------------|
          |      Non PCI compliant       |      pins 2 & 3 closed      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               PCI IRQ CONFIGURATION (IRQ14)                |
          |------------------------------------------------------------|
          |             IRQ              |            J31K             |
          |------------------------------+-----------------------------|
          |        PCI compliant         |      pins 1 & 2 closed      |
          |------------------------------+-----------------------------|
          |      Non PCI compliant       |      pins 2 & 3 closed      |
          |------------------------------+-----------------------------|
          |       PCI slot 1 (IDE)       |      pins 2 & 4 closed      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               PCI IRQ CONFIGURATION (IRQ15)                |
          |------------------------------------------------------------|
          |             IRQ              |            J31H             |
          |------------------------------+-----------------------------|
          |        PCI compliant         |      pins 1 & 2 closed      |
          |------------------------------+-----------------------------|
          |      Non PCI compliant       |      pins 2 & 3 closed      |
          +------------------------------------------------------------+