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

   PC SERVER 320 (TYPE 8640)

   MODELS OYO, OYT, 1YO, 1YT

   Processor        Pentium                                       
   Processor Speed  90/100MHz                                     
   Chip Set         Unidentified                                  
   Video Chip Set   None                                          
   Maximum Onboard  256MB                                         
   Memory           
   Maximum Video    None                                          
   Memory           
   Cache            256/512KB                                     
   BIOS             Unidentified                                  
   Dimensions       355mm x 304mm                                 
   I/O Options      32-bit PCI slots (3), floppy drive interface, 
                    IDE interface, parallel port, PS/2 mouse      
                    port, serial ports (2)                        
   NPU Options      None                                          

<gopher://bitreich.org/I/th99/m/I-L/33452-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | PS/2 mouse port   |    J6    | IDE interface    |   W24    |
   |                   |          | LED              |          |
   |-------------------+----------+------------------+----------|
   | Parallel port     |    J9    | Speaker          |   W31    |
   |-------------------+----------+------------------+----------|
   | Floppy drive      |   J10    | Chassis fan      |   W35    |
   | interface         |          | power            |          |
   |-------------------+----------+------------------+----------|
   | Serial port 1     |   J11    | Chassis fan      |   W36    |
   |                   |          | power            |          |
   |-------------------+----------+------------------+----------|
   | Serial port 2     |   J12    | Power LED &      |   W37    |
   |                   |          | keylock          |          |
   |-------------------+----------+------------------+----------|
   | IDE interface     |   J13    | IDE interface    |   W38    |
   |                   |          | LED              |          |
   |-------------------+----------+------------------+----------|
   | Speaker           |   W12    | 32-bit PCI slots |  PC1 -   |
   |                   |          |                  |   PC3    |
   |-------------------+----------+------------------+----------|
   | Power LED &       |   W18    |                  |          |
   | keylock           |          |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function               | Label |   Position   |
   |-------------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  W2   |     Open     |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  W10  |  Pins 2 & 3  |
   |   | alter                           |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | Jumper information unavailable  |  W11  | Unidentified |
   |---+---------------------------------+-------+--------------|
   |   | Jumper information unavailable  |  W13  | Unidentified |
   |---+---------------------------------+-------+--------------|
   |   | Jumper information unavailable  |  W14  | Unidentified |
   |---+---------------------------------+-------+--------------|
   |   | Jumper information unavailable  |  W15  | Unidentified |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  W16  |  Pins 1 & 2  |
   |   | alter                           |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  W17  |    Closed    |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Monitor type select color       |  W20  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |   | Monitor type select monochrome  |  W20  |     Open     |
   |---+---------------------------------+-------+--------------|
   |>> | Keyboard type select PS/2 mouse |  W21  |    Closed    |
   |   | and keyboard                    |       |              |
   |---+---------------------------------+-------+--------------|
   |   | Keyboard type select AT         |  W21  |     Open     |
   |   | keyboard                        |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  W22  |     Open     |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  W23  |     Open     |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | ISA primary IDE IRQ select      |  W25  |  Pins 1 & 2  |
   |   | IRQ14                           |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | ISA secondary IDE IRQ select    |  W25  |  Pins 2 & 3  |
   |   | IRQ15                           |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  W30  |     Open     |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |   | Jumper information unavailable  |  W32  | Unidentified |
   |---+---------------------------------+-------+--------------|
   |   | Jumper information unavailable  |  W33  | Unidentified |
   |---+---------------------------------+-------+--------------|
   |   | Jumper information unavailable  |  W34  | Unidentified |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     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 36 |  None   |
   |--------+-------------+-------------+-------------+---------|
   |  24MB  | (2) 2M x 36 | (2) 1M x 36 |    None     |  None   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM CONFIGURATION (CON'T)                 |
   |------------------------------------------------------------|
   | Size  |   Bank 0    |   Bank 1   |   Bank 2   |   Bank 3   |
   |-------+-------------+------------+------------+------------|
   | 32MB  | (2) 2M x 36 |  (2) 2M x  |    None    |    None    |
   |       |             |     36     |            |            |
   |-------+-------------+------------+------------+------------|
   | 32MB  | (2) 1M x 36 |  (2) 1M x  |  (2) 1M x  |  (2) 1M x  |
   |       |             |     36     |     36     |     36     |
   |-------+-------------+------------+------------+------------|
   | 32MB  | (2) 2M x 36 |  (2) 1M x  |  (2) 1M x  |    None    |
   |       |             |     36     |     36     |            |
   |-------+-------------+------------+------------+------------|
   | 32MB  | (2) 4M x 36 |    None    |    None    |    None    |
   |-------+-------------+------------+------------+------------|
   | 40MB  | (2) 1M x 36 |  (2) 4M x  |    None    |    None    |
   |       |             |     36     |            |            |
   |-------+-------------+------------+------------+------------|
   | 40MB  | (2) 1M x 36 |  (2) 2M x  |  (2) 2M x  |    None    |
   |       |             |     36     |     36     |            |
   |-------+-------------+------------+------------+------------|
   | 40MB  | (2) 2M x 36 |  (2) 1M x  |  (2) 1M x  |  (2) 1M x  |
   |       |             |     36     |     36     |     36     |
   |-------+-------------+------------+------------+------------|
   | 40MB  | (2) 4M x 36 |  (2) 1M x  |    None    |    None    |
   |       |             |     36     |            |            |
   |-------+-------------+------------+------------+------------|
   | 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     |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM CONFIGURATION (CON'T)                 |
   |------------------------------------------------------------|
   | Size  |   Bank 0    |   Bank 1   |   Bank 2   |   Bank 3   |
   |-------+-------------+------------+------------+------------|
   | 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     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |      256KB       |    (4) 32K x 8     |    (4) 32K x 8     |
   |------------------+--------------------+--------------------|
   |      512KB       |    (4) 64K x 8     |    (4) 64K x 8     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |            Size            |              W5               |
   |----------------------------+-------------------------------|
   |           256KB            |       Pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   |           512KB            |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  CACHE TYPE CONFIGURATION                  |
   |------------------------------------------------------------|
   |               Type                |           W1           |
   |-----------------------------------+------------------------|
   |>> |          Write back           |          Open          |
   |---+-------------------------------+------------------------|
   |   |         Write through         |         Closed         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CPU SPEED SELECTION                     |
   |------------------------------------------------------------|
   |    CPU speed     |    Clock speed     |         W6         |
   |------------------+--------------------+--------------------|
   |      90MHz       |       60MHz        | Pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |      100MHz      |       66MHz        | Pins 2 & 3 closed  |
   +------------------------------------------------------------+