IBM CORPORATION
===============

   PC SERVER 320 (TYPE 8640)

   MODELS MXO, MXT, MYO, MYT, MYR

   Processor        Pentium                                       
   Processor Speed  75/90MHz                                      
   Chip Set         Unidentified                                  
   Video Chip Set   None                                          
   Maximum Onboard  256MB                                         
   Memory           
   Maximum Video    Unidentified                                  
   Memory           
   Cache            256/512KB                                     
   BIOS             Unidentified                                  
   Dimensions       355mm x 304mm                                 
   I/O Options      External memory card, 32-bit PCI slots (2),   
                    floppy drive interface,IDE interface, SCSI    
                    connectors (3), parallel port, PS/2 mouse     
                    port, serial ports (2), VGA port, cache slot  
   NPU Options      None                                          

<gopher://bitreich.org/I/th99/m/I-L/33453-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | SCSI interface    |    J2    | Serial port 1    |   J24    |
   | LED               |          |                  |          |
   |-------------------+----------+------------------+----------|
   | IDE interface LED |    J3    | Reset switch     |   J25    |
   |-------------------+----------+------------------+----------|
   | Chassis fan power |    J4    | SCSI interface   |   J28    |
   |-------------------+----------+------------------+----------|
   | Speaker           |    J6    | SCSI fast/wide   |   J35    |
   |                   |          | internal         |          |
   |                   |          | interface        |          |
   |-------------------+----------+------------------+----------|
   | Chassis fan power |    J8    | SCSI fast/wide   |   J39    |
   |                   |          | external         |          |
   |                   |          | interface        |          |
   |-------------------+----------+------------------+----------|
   | Chassis fan power |    J9    | VGA port         |   J40    |
   |-------------------+----------+------------------+----------|
   | Power LED         |   J10    | PS/2 mouse port  |   J42    |
   |-------------------+----------+------------------+----------|
   | IDE interface     |   J13    | 32-bit PCI slots |  PC1 &   |
   |                   |          |                  |   PC2    |
   |-------------------+----------+------------------+----------|
   | Parallel port     |   J19    | Cache slot       |   SL1    |
   |-------------------+----------+------------------+----------|
   | Floppy drive      |   J20    | External memory  |   SL2    |
   | interface         |          | card             |          |
   |-------------------+----------+------------------+----------|
   | Serial port 2     |   J21    |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function               | Label |   Position   |
   |-------------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  J12  |     Open     |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |   | Password write enabled          |  J15  |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | Password write disabled         |  J15  |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | C2 cover open                   |  J16  | Unidentified |
   |---+---------------------------------+-------+--------------|
   |   | C2 keylock                      |  J17  | Unidentified |
   |---+---------------------------------+-------+--------------|
   |>> | On board SCSI enabled           |  J26  |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | On board SCSI disabled          |  J26  |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | On board video enabled          |  J27  |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | On board video disabled         |  J27  |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
   |------+-------------+-------------+------------+------------|
   | 8MB  | (2) 1M x 36 |    None     |    None    |    None    |
   |------+-------------+-------------+------------+------------|
   | 16MB | (2) 1M x 36 | (2) 1M x 36 |    None    |    None    |
   |------+-------------+-------------+------------+------------|
   | 16MB | (2) 2M x 36 |    None     |    None    |    None    |
   |------+-------------+-------------+------------+------------|
   | 24MB | (2) 1M x 36 | (2) 2M x 36 |    None    |    None    |
   |------+-------------+-------------+------------+------------|
   | 24MB | (2) 1M x 36 | (2) 1M x 36 |  (2) 1M x  |    None    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 24MB | (2) 2M x 36 | (2) 1M x 36 |    None    |    None    |
   |------+-------------+-------------+------------+------------|
   | 32MB | (2) 2M x 36 | (2) 2M x 36 |    None    |    None    |
   |------+-------------+-------------+------------+------------|
   | 32MB | (2) 1M x 36 | (2) 1M x 36 |  (2) 1M x  |  (2) 1M x  |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 32MB | (2) 2M x 36 | (2) 1M x 36 |  (2) 1M x  |    None    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 32MB | (2) 4M x 36 |    None     |    None    |    None    |
   |------+-------------+-------------+------------+------------|
   | 40MB | (2) 1M x 36 | (2) 4M x 36 |    None    |    None    |
   |------+-------------+-------------+------------+------------|
   | 40MB | (2) 1M x 36 | (2) 2M x 36 |  (2) 2M x  |    None    |
   |      |             |             |     36     |            |
   |------+-------------+-------------+------------+------------|
   | 40MB | (2) 2M x 36 | (2) 1M x 36 |  (2) 1M x  |  (2) 1M x  |
   |      |             |             |     36     |     36     |
   |------+-------------+-------------+------------+------------|
   | 40MB | (2) 4M x 36 | (2) 1M x 36 |    None    |    None    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM CONFIGURATION (CON'T)                 |
   |------------------------------------------------------------|
   | Size  |   Bank 0    |   Bank 1   |   Bank 2   |   Bank 3   |
   |-------+-------------+------------+------------+------------|
   | 48MB  | (2) 2M x 36 |  (2) 4M x  |    None    |    None    |
   |       |             |     36     |            |            |
   |-------+-------------+------------+------------+------------|
   | 48MB  | (2) 2M x 36 |  (2) 2M x  |  (2) 2M x  |    None    |
   |       |             |     36     |     36     |            |
   |-------+-------------+------------+------------+------------|
   | 48MB  | (2) 4M x 36 |  (2) 2M x  |    None    |    None    |
   |       |             |     36     |            |            |
   |-------+-------------+------------+------------+------------|
   | 48MB  | (2) 4M x 36 |  (2) 1M x  |  (2) 1M x  |    None    |
   |       |             |     36     |     36     |            |
   |-------+-------------+------------+------------+------------|
   | 56MB  | (2) 1M x 36 |  (2) 2M x  |  (2) 2M x  |  (2) 2M x  |
   |       |             |     36     |     36     |     36     |
   |-------+-------------+------------+------------+------------|
   | 56MB  | (2) 4M x 36 |  (2) 1M x  |  (2) 1M x  |  (2) 1M x  |
   |       |             |     36     |     36     |     36     |
   |-------+-------------+------------+------------+------------|
   | 64MB  | (2) 4M x 36 |  (2) 4M x  |    None    |    None    |
   |       |             |     36     |            |            |
   |-------+-------------+------------+------------+------------|
   | 64MB  | (2) 2M x 36 |  (2) 2M x  |  (2) 2M x  |  (2) 2M x  |
   |       |             |     36     |     36     |     36     |
   |-------+-------------+------------+------------+------------|
   | 64MB  | (2) 4M x 36 |  (2) 2M x  |  (2) 2M x  |    None    |
   |       |             |     36     |     36     |            |
   |-------+-------------+------------+------------+------------|
   | 64MB  | (2) 8M x 36 |    None    |    None    |    None    |
   |-------+-------------+------------+------------+------------|
   | 72MB  | (2) 1M x 36 |  (2) 8M x  |    None    |    None    |
   |       |             |     36     |            |            |
   |-------+-------------+------------+------------+------------|
   | 72MB  | (2) 1M x 36 |  (2) 4M x  |  (2) 4M x  |    None    |
   |       |             |     36     |     36     |            |
   |-------+-------------+------------+------------+------------|
   | 72MB  | (2) 8M x 36 |  (2) 1M x  |    None    |    None    |
   |       |             |     36     |            |            |
   |-------+-------------+------------+------------+------------|
   | 80MB  | (2) 2M x 36 |  (2) 8M x  |    None    |    None    |
   |       |             |     36     |            |            |
   |-------+-------------+------------+------------+------------|
   | 80MB  | (2) 2M x 36 |  (2) 4M x  |  (2) 4M x  |    None    |
   |       |             |     36     |     36     |            |
   |-------+-------------+------------+------------+------------|
   | 80MB  | (2) 8M x 36 |  (2) 2M x  |    None    |    None    |
   |       |             |     36     |            |            |
   |-------+-------------+------------+------------+------------|
   | 80MB  | (2) 8M x 36 |  (2) 1M x  |  (2) 1M x  |    None    |
   |       |             |     36     |     36     |            |
   |-------+-------------+------------+------------+------------|
   | 88MB  | (2) 8M x 36 |  (2) 1M x  |  (2) 1M x  |  (2) 1M x  |
   |       |             |     36     |     36     |     36     |
   |-------+-------------+------------+------------+------------|
   | 96MB  | (2) 4M x 36 |  (2) 8M x  |    None    |    None    |
   |       |             |     36     |            |            |
   |-------+-------------+------------+------------+------------|
   | 96MB  | (2) 4M x 36 |  (2) 4M x  |  (2) 4M x  |    None    |
   |       |             |     36     |     36     |            |
   |-------+-------------+------------+------------+------------|
   | 96MB  | (2) 8M x 36 |  (2) 4M x  |    None    |    None    |
   |       |             |     36     |            |            |
   |-------+-------------+------------+------------+------------|
   | 96MB  | (2) 8M x 36 |  (2) 2M x  |  (2) 2M x  |    None    |
   |       |             |     36     |     36     |            |
   |-------+-------------+------------+------------+------------|
   | 104MB | (2) 1M x 36 |  (2) 4M x  |  (2) 4M x  |  (2) 4M x  |
   |       |             |     36     |     36     |     36     |
   |-------+-------------+------------+------------+------------|
   | 112MB | (2) 2M x 36 |  (2) 4M x  |  (2) 4M x  |  (2) 4M x  |
   |       |             |     36     |     36     |     36     |
   |-------+-------------+------------+------------+------------|
   | 112MB | (2) 8M x 36 |  (2) 2M x  |  (2) 2M x  |  (2) 2M x  |
   |       |             |     36     |     36     |     36     |
   |-------+-------------+------------+------------+------------|
   | 128MB | (2) 8M x 36 |  (2) 8M x  |    None    |    None    |
   |       |             |     36     |            |            |
   |-------+-------------+------------+------------+------------|
   | 128MB | (2) 4M x 36 |  (2) 4M x  |  (2) 4M x  |  (2) 4M x  |
   |       |             |     36     |     36     |     36     |
   |-------+-------------+------------+------------+------------|
   | 136MB | (2) 1M x 36 |  (2) 8M x  |  (2) 8M x  |    None    |
   |       |             |     36     |     36     |            |
   |-------+-------------+------------+------------+------------|
   | 144MB | (2) 2M x 36 |  (2) 8M x  |  (2) 8M x  |    None    |
   |       |             |     36     |     36     |            |
   |-------+-------------+------------+------------+------------|
   | 160MB | (2) 4M x 36 |  (2) 8M x  |  (2) 8M x  |    None    |
   |       |             |     36     |     36     |            |
   |-------+-------------+------------+------------+------------|
   | 160MB | (2) 8M x 36 |  (2) 4M x  |  (2) 4M x  |  (2) 4M x  |
   |       |             |     36     |     36     |     36     |
   |-------+-------------+------------+------------+------------|
   | 192MB | (2) 8M x 36 |  (2) 8M x  |  (2) 8M x  |    None    |
   |       |             |     36     |     36     |            |
   |-------+-------------+------------+------------+------------|
   | 200MB | (2) 1M x 36 |  (2) 8M x  |  (2) 8M x  |  (2) 8M x  |
   |       |             |     36     |     36     |     36     |
   |-------+-------------+------------+------------+------------|
   | 208MB | (2) 2M x 36 |  (2) 8M x  |  (2) 8M x  |  (2) 8M x  |
   |       |             |     36     |     36     |     36     |
   |-------+-------------+------------+------------+------------|
   | 224MB | (2) 4M x 36 |  (2) 8M x  |  (2) 8M x  |  (2) 8M x  |
   |       |             |     36     |     36     |     36     |
   |-------+-------------+------------+------------+------------|
   | 256MB | (2) 8M x 36 |  (2) 8M x  |  (2) 8M x  |  (2) 8M x  |
   |       |             |     36     |     36     |     36     |
   |------------------------------------------------------------|
   | Note: Memory is located on the external memory card.       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |            Size            |              SL1              |
   |----------------------------+-------------------------------|
   |           256KB            |    256KB module installed     |
   |----------------------------+-------------------------------|
   |           512KB            |    512KB module installed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CPU SPEED SELECTION                     |
   |------------------------------------------------------------|
   |    CPU speed     |    Clock speed     |        J43         |
   |------------------+--------------------+--------------------|
   |      75MHz       |       50MHz        | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |      90MHz       |       60MHz        | Pins 1 & 2 closed  |
   +------------------------------------------------------------+