DIAMOND FLOWER, INC.
====================

   486SX-16/20/25UCE

   Processor             80486SX/80487SX                          
   Processor Speed       16/20/25MHz                              
   Chip Set              UMC                                      
   Max. Onboard DRAM     32MB                                     
   Cache                 64/128/256KB                             
   BIOS                  AMI                                      
   Dimensions            330mm x 220mm                            
   I/O OPTIONS           32-bit external memory card slot         
   NPU Options           None                                     

<gopher://bitreich.org/I/th99/m/C-D/31405-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose       | Location | Purpose              | Location |
   |---------------+----------+----------------------+----------|
   | Keyboard      |    J1    | Turbo switch         |  J8 and  |
   | connector     |          |                      |   J17    |
   |---------------+----------+----------------------+----------|
   | Speaker       |    J2    | Power LED & Keylock  |    J9    |
   |---------------+----------+----------------------+----------|
   | Turbo LED     |    J3    | External battery     |   J18    |
   |---------------+----------+----------------------+----------|
   | Reset switch  |  J5 and  | 32-bit external      |    S1    |
   |               |   J14    | memory card          |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Factory configured - do not      |   J4   |    open    |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |   J6   | pins 2 & 3 |
   |   | alter                            |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | CPU speed select 16/25MHz        |   J7   |    open    |
   |---+----------------------------------+--------+------------|
   |   | CPU speed select 20MHz           |   J7   |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Battery select internal          |  J16   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Battery select external          |  J16   | pins 1 & 2 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | Factory configured - do not      |  J19   |    open    |
   |   | alter                            |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Monitor type select color        |  J20   |   closed   |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select monochrome   |  J20   |    open    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     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     |
   |------------------+--------------------+--------------------|
   |       8MB        |     (4) 1M x 9     |     (4) 1M x 9     |
   |------------------+--------------------+--------------------|
   |       16MB       |     (4) 4M x 9     |        NONE        |
   |------------------+--------------------+--------------------|
   |       20MB       |     (4) 1M x 9     |     (4) 4M x 9     |
   |------------------+--------------------+--------------------|
   |       32MB       |     (4) 4M x 9     |     (4) 4M x 9     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     SRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |    Size    |  Cache SRAM   |   Location    |      TAG      |
   |------------+---------------+---------------+---------------|
   |    64KB    |  (8) 8K x 8   |  Banks 0 & 1  |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   128KB    |  (4) 32K x 8  |    Bank 0     |  (1) 8K x 8   |
   |------------+---------------+---------------+---------------|
   |   256KB    |  (8) 32K x 8  |  Banks 0 & 1  |  (1) 32K x 8  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 SRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   | Jumper |      64KB       |     128KB      |     256KB      |
   |--------+-----------------+----------------+----------------|
   |   W1   |      open       |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   |   W2   |      open       |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   |   W3   |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   |   W4   |      open       |      open      |     closed     |
   |--------+-----------------+----------------+----------------|
   |   W5   |      open       |      open      |     closed     |
   |--------+-----------------+----------------+----------------|
   |  J10   |   pins 1 & 2    |   pins 2 & 3   |   pins 2 & 3   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   |  J11   |   pins 1 & 2    |   pins 2 & 3   |   pins 1 & 2   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   |  J12   |      open       |   pins 1 & 2   |   pins 2 & 3   |
   |        |                 |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   |  J13   |   pins 1 & 2    |   pins 1 & 2   |   pins 2 & 3   |
   |        |     closed      |     closed     |     closed     |
   |--------+-----------------+----------------+----------------|
   |  J15   |     closed      |     closed     |     closed     |
   +------------------------------------------------------------+