PEACOCK AG
==========

   80486SX/DX/DX2 (SYMPHONY)

   Processor    80486SX/80486DX/80486DX2                          
   Processor    25/33/50(internal)/50/66(internal)MHz             
   Speed        
   Chip Set     Symphony                                          
   Max. Onboard 32MB                                              
   DRAM         
   Cache        64/128/256/1024KB                                 
   BIOS         AMI                                               
   Dimensions   330mm x 218mm                                     
   I/O Options  Floppy drive interface, IDE interface, parallel   
                port, serial ports (2)                            
   NPU Options  4167 (not present on all boards)                  

<gopher://bitreich.org/I/th99/m/P-R/32648-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose              | Location | Purpose       | Location |
   |----------------------+----------+---------------+----------|
   | IDE interface        |   CN1    | Turbo LED     |   JP5    |
   |----------------------+----------+---------------+----------|
   | Floppy drive         |   CN2    | Speaker       |   JP7    |
   | interface            |          |               |          |
   |----------------------+----------+---------------+----------|
   | Parallel port        |   CN3    | Power LED &   |   JP9    |
   |                      |          | keylock       |          |
   |----------------------+----------+---------------+----------|
   | Serial port 2        |   CN4    | Reset switch  |   JP11   |
   |----------------------+----------+---------------+----------|
   | Serial port 1        |   CN5    | IDE interface |   JP12   |
   |                      |          | LED           |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | I/O bus speed select             |  JP2   | pins 1 & 2 |
   |   | CPUCLK=CCLK2                     |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | I/O bus speed select CPUCLK=PCLK |  JP2   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Cache support enabled            |  JP6   |    Open    |
   |---+----------------------------------+--------+------------|
   |   | Cache support disabled           |  JP6   |   Closed   |
   |---+----------------------------------+--------+------------|
   |>> | Monitor type select color        |  JP10  |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select monochrome   |  JP10  |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | On board I/O enabled             |  JP18  | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | On board I/O disabled            |  JP18  | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Parallel port IRQ sleect IRQ7    |  JP19  | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Parallel port IRQ sleect IRQ5    |  JP19  | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Cache controller timing select 1 |  JP30  | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Cache controller timing select 2 |  JP30  | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | CPU oscillator matches CPU speed |  JP36  |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | CPU oscillator matches 2x CPU    |  JP36  |    Open    |
   |   | speed                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | CPU algorithm select 3-2-2-2     |  JP37  |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | CPU algorithm select 2-1-1-1     |  JP37  |    Open    |
   |---+----------------------------------+--------+------------|
   |>> | Cache wait state select 0 wait   |  JP38  |    Open    |
   |   | states                           |        |            |
   |---+----------------------------------+--------+------------|
   |   | Cache wait state select 1 wait   |  JP38  |   Closed   |
   |   | state                            |        |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       1MB        |    (4) 256K x 9    |        NONE        |
   |------------------+--------------------+--------------------|
   |       2MB        |    (4) 256K x 9    |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       4MB        |     (4) 1M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       5MB        |    (4) 256K x 9    |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       5MB        |     (4) 1M x 9     |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       16MB       |     (4) 4M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       17MB       |    (4) 256K x 9    |     (4) 4M x 9     |
   |------------------+--------------------+--------------------|
   |       17MB       |     (4) 4M x 9     |    (4) 256K x 9    |
   |------------------+--------------------+--------------------|
   |       20MB       |     (4) 1M x 9     |     (4) 4M x 9     |
   |------------------+--------------------+--------------------|
   |       20MB       |     (4) 4M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |    Bank 0     |    Bank 1     |      TAG      |
   |------------+---------------+---------------+---------------|
   |    64KB    |  (4) 8K x 8   |  (4) 8K x 8   |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   128KB    |  (4) 32K x 8  |     NONE      |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   256KB    |  (4) 32K x 8  |  (4) 32K x 8  |  (1) 32K x 8  |
   |------------+---------------+---------------+---------------|
   |    1MB     | (4) 128K x 8  | (4) 128K x 8  | (1) 128K x 8  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |  Size  |  JP20  |  JP21  |  JP22  |  JP23  | JP24  | JP25  |
   |--------+--------+--------+--------+--------+-------+-------|
   |  64KB  | 2 & 3  | 2 & 3  | 2 & 3  |  Open  | 2 & 3 | 2 & 3 |
   |--------+--------+--------+--------+--------+-------+-------|
   | 128KB  | 1 & 2  |  Open  | 1 & 2  | Closed | 1 & 2 | 1 & 2 |
   |--------+--------+--------+--------+--------+-------+-------|
   | 256KB  | 2 & 3  | 1 & 2  | 2 & 3  |  Open  | 2 & 3 | 2 & 3 |
   |--------+--------+--------+--------+--------+-------+-------|
   |  1MB   | 2 & 3  | 1 & 2  | 2 & 3  |  Open  | 2 & 3 | 2 & 3 |
   |------------------------------------------------------------|
   | Note: Pins designated should be in the closed positon.     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |             CACHE JUMPER CONFIGURATION (CON'T)             |
   |------------------------------------------------------------|
   | Size  | JP26  | JP27  | JP31 | JP32 | JP33 | JP34 |  JP35  |
   |-------+-------+-------+------+------+------+------+--------|
   | 64KB  | 2 & 3 | 2 & 3 | 1 &  | 1 &  | 1 &  | 1 &  | Closed |
   |       |       |       |  2   |  2   |  2   |  2   |        |
   |-------+-------+-------+------+------+------+------+--------|
   | 128KB | 1 & 2 | 1 & 2 | 1 &  | 1 &  | 2 &  | 1 &  | Closed |
   |       |       |       |  2   |  2   |  3   |  2   |        |
   |-------+-------+-------+------+------+------+------+--------|
   | 256KB | 2 & 3 | 2 & 3 | 1 &  | 2 &  | 2 &  | 1 &  | Closed |
   |       |       |       |  2   |  3   |  3   |  2   |        |
   |-------+-------+-------+------+------+------+------+--------|
   |  1MB  | 2 & 3 | 2 & 3 | 2 &  | 2 &  | 2 &  | 2 &  | Closed |
   |       |       |       |  3   |  3   |  3   |  3   |        |
   |------------------------------------------------------------|
   | Note: Pins designated should be in the closed positon.     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CPU TYPE CONFIGURATION                   |
   |------------------------------------------------------------|
   |     Type     |        JP1        |    JP3     |    JP4     |
   |--------------+-------------------+------------+------------|
   |   80486SX    | pins 2 & 3 closed |    Open    |    Open    |
   |--------------+-------------------+------------+------------|
   |   80486DX    | pins 1 & 2 closed |   Closed   |   Closed   |
   |--------------+-------------------+------------+------------|
   |   80486DX2   | pins 1 & 2 closed |   Closed   |   Closed   |
   +------------------------------------------------------------+