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       # MICRONICS COMPUTERS, INC.
       
          M5PE SYSTEM BOARD
       
          Processor    Pentium                                           
          Processor    60/66MHz                                          
          Speed        
          Chip Set     Intel                                             
          Max. Onboard 192MB                                             
          DRAM         
          Cache        256/512KB                                         
          BIOS         Phoenix                                           
          Dimensions   355mm x 304mm                                     
          I/O Options  32-bit PCI slot (2), shared PCI/EISA slot, PS/2   
                       mouse port, floppy drive interface,               
                                                                         
                       IDE interface, parallel port, serial ports (2)    
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose          | Location | Purpose           | Location |
          |------------------+----------+-------------------+----------|
          | Speaker          |   J11    | 5.3V for ground   |   J41    |
          |------------------+----------+-------------------+----------|
          | PS/2 mouse port  |   J15    | 5.3V for ground   |   J42    |
          |------------------+----------+-------------------+----------|
          | Parallel port    |   J18    | Reset switch      |    W1    |
          |------------------+----------+-------------------+----------|
          | Floppy drive     |   J19    | External keyboard |    W8    |
          | interface        |          | connector         |          |
          |------------------+----------+-------------------+----------|
          | Serial port A    |   J20    | Power LED &       |    W9    |
          |                  |          | keylock           |          |
          |------------------+----------+-------------------+----------|
          | Serial port B    |   J21    | IDE interface LED |   W10    |
          |------------------+----------+-------------------+----------|
          | IDE interface    |   J22    | Chassis fan power |   W21    |
          |------------------+----------+-------------------+----------|
          | Turbo LED        |   J38    | PCI slots         |  S0, S1  |
          |------------------+----------+-------------------+----------|
          | Turbo switch     |   J39    | Shared PCI/EISA   |   J30    |
          |                  |          | slot              |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |              Function               | Jumper |  Position   |
          |-------------------------------------+--------+-------------|
          | » | Pentium parity check enabled    |   J1   |   Closed    |
          |---+---------------------------------+--------+-------------|
          |   | Pentium parity check disabled   |   J1   |    Open     |
          |---+---------------------------------+--------+-------------|
          | » | Pentium write back cache        |   J2   |   Closed    |
          |---+---------------------------------+--------+-------------|
          |   | Pentium write through cache     |   J2   |    Open     |
          |---+---------------------------------+--------+-------------|
          | » | Factory configured - do not     |   J5   |   Closed    |
          |   | alter                           |        |             |
          |---+---------------------------------+--------+-------------|
          | » | Factory configured - do not     |   J6   | pins 1 & 2  |
          |   | alter                           |        |   closed    |
          |---+---------------------------------+--------+-------------|
          | » | 5V for Pentium                  |  J40   | All closed  |
          |---+---------------------------------+--------+-------------|
          |   | 5.3 V for Pentium               |  J40   |  To power   |
          |   |                                 |        |   module    |
          |---+---------------------------------+--------+-------------|
          | » | BIOS normal operation           |   W2   | pins 1 & 2  |
          |   |                                 |        |   closed    |
          |---+---------------------------------+--------+-------------|
          |   | BIOS recovery mode              |   W2   | pins 2 & 3  |
          |   |                                 |        |   closed    |
          |---+---------------------------------+--------+-------------|
          | » | Factory configured - do not     |   W3   |   Closed    |
          |   | alter                           |        |             |
          |---+---------------------------------+--------+-------------|
          | » | Factory configured - do not     |   W4   |   Closed    |
          |   | alter                           |        |             |
          |---+---------------------------------+--------+-------------|
          | » | PS/2 Mouse installed            |   W6   |   Closed    |
          |---+---------------------------------+--------+-------------|
          |   | PS/2 Mouse not installed        |   W6   |    Open     |
          |---+---------------------------------+--------+-------------|
          | » | Factory configured - do not     |   W7   |   Closed    |
          |   | alter                           |        |             |
          |---+---------------------------------+--------+-------------|
          | » | Factory configured - do not     |  W15   |   Closed    |
          |   | alter                           |        |             |
          |---+---------------------------------+--------+-------------|
          | » | Factory configured - do not     |  W20   |   Closed    |
          |   | alter                           |        |             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DMA CHANNEL SELECT                     |
          |------------------------------------------------------------|
          |   DRQ   |   DACK   |        W14        |        W16        |
          |---------+----------+-------------------+-------------------|
          |    6    |    6     | pins 1 & 2 closed | pins 1 & 2 closed |
          |---------+----------+-------------------+-------------------|
          |    7    |    7     | pins 2 & 3 closed | pins 2 & 3 closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 PCI IRQ REDIRECT SELECTION                 |
          |------------------------------------------------------------|
          |           Function            |            W17             |
          |-------------------------------+----------------------------|
          |     PCI Interupt to IRQ 5     |     pins 1 & 2 closed      |
          |-------------------------------+----------------------------|
          |     PCI Interupt to IRQ 9     |     pins 3 & 4 closed      |
          |-------------------------------+----------------------------|
          |    PCI Interupt to IRQ 10     |     pins 5 & 6 closed      |
          |-------------------------------+----------------------------|
          |    PCI Interupt to IRQ 11     |     pins 7 & 8 closed      |
          |-------------------------------+----------------------------|
          |    PCI Interupt to IRQ 15     |     pins 9 & 10 closed     |
          |-------------------------------+----------------------------|
          |    PCI Interupt to IRQ 14     |    pins 11 & 12 closed     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size  | Bank 0 | Bank 1 | Bank 2 | Bank 3 | Bank 4 | Bank  |
          |       |        |        |        |        |        |   5   |
          |-------+--------+--------+--------+--------+--------+-------|
          |  8MB  | (1) 1M | (1) 1M |  NONE  |  NONE  |  NONE  | NONE  |
          |       |  x 36  |  x 36  |        |        |        |       |
          |-------+--------+--------+--------+--------+--------+-------|
          | 16MB  | (1) 1M | (1) 1M | (1) 1M | (1) 1M |  NONE  | NONE  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |        |       |
          |-------+--------+--------+--------+--------+--------+-------|
          | 16MB  | (1) 2M | (1) 2M |  NONE  |  NONE  |  NONE  | NONE  |
          |       |  x 36  |  x 36  |        |        |        |       |
          |-------+--------+--------+--------+--------+--------+-------|
          | 24MB  | (1) 1M | (1) 1M | (1) 1M | (1) 1M | (1) 1M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 1M x  |
          |       |        |        |        |        |        |  36   |
          |-------+--------+--------+--------+--------+--------+-------|
          | 24MB  | (1) 1M | (1) 1M | (1) 2M | (1) 2M |  NONE  | NONE  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |        |       |
          |-------+--------+--------+--------+--------+--------+-------|
          | 32MB  | (1) 2M | (1) 2M | (1) 2M | (1) 2M |  NONE  | NONE  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |        |       |
          |-------+--------+--------+--------+--------+--------+-------|
          | 32MB  | (1) 1M | (1) 1M | (1) 1M | (1) 1M | (1) 2M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 2M x  |
          |       |        |        |        |        |        |  36   |
          |-------+--------+--------+--------+--------+--------+-------|
          | 32MB  | (1) 4M | (1) 4M |  NONE  |  NONE  |  NONE  | NONE  |
          |       |  x 36  |  x 36  |        |        |        |       |
          |-------+--------+--------+--------+--------+--------+-------|
          | 40MB  | (1) 1M | (1) 1M | (1) 2M | (1) 2M | (1) 2M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 2M x  |
          |       |        |        |        |        |        |  36   |
          |-------+--------+--------+--------+--------+--------+-------|
          | 40MB  | (1) 1M | (1) 1M | (1) 4M | (1) 4M |  NONE  | NONE  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |        |       |
          |-------+--------+--------+--------+--------+--------+-------|
          | 48MB  | (1) 2M | (1) 2M | (1) 2M | (1) 2M | (1) 2M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 2M x  |
          |       |        |        |        |        |        |  36   |
          |-------+--------+--------+--------+--------+--------+-------|
          | 48MB  | (1) 2M | (1) 2M | (1) 4M | (1) 4M |  NONE  | NONE  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |        |       |
          |-------+--------+--------+--------+--------+--------+-------|
          | 48MB  | (1) 1M | (1) 1M | (1) 1M | (1) 1M | (1) 4M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 4M x  |
          |       |        |        |        |        |        |  36   |
          |-------+--------+--------+--------+--------+--------+-------|
          | 56MB  | (1) 1M | (1) 1M | (1) 2M | (1) 2M | (1) 4M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 4M x  |
          |       |        |        |        |        |        |  36   |
          |-------+--------+--------+--------+--------+--------+-------|
          | 64MB  | (1) 4M | (1) 4M | (1) 4M | (1) 4M |  NONE  | NONE  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |        |       |
          |-------+--------+--------+--------+--------+--------+-------|
          | 64MB  | (1) 2M | (1) 2M | (1) 2M | (1) 2M | (1) 4M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 4M x  |
          |       |        |        |        |        |        |  36   |
          |-------+--------+--------+--------+--------+--------+-------|
          | 64MB  | (1) 8M | (1) 8M |  NONE  |  NONE  |  NONE  | NONE  |
          |       |  x 36  |  x 36  |        |        |        |       |
          |-------+--------+--------+--------+--------+--------+-------|
          | 72MB  | (1) 1M | (1) 1M | (1) 4M | (1) 4M | (1) 4M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 4M x  |
          |       |        |        |        |        |        |  36   |
          |-------+--------+--------+--------+--------+--------+-------|
          | 72MB  | (1) 1M | (1) 1M | (1) 8M | (1) 8M |  NONE  | NONE  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |        |       |
          |-------+--------+--------+--------+--------+--------+-------|
          | 80MB  | (1) 2M | (1) 2M | (1) 4M | (1) 4M | (1) 4M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 4M x  |
          |       |        |        |        |        |        |  36   |
          |-------+--------+--------+--------+--------+--------+-------|
          | 80MB  | (1) 2M | (1) 2M | (1) 8M | (1) 8M |  NONE  | NONE  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |        |       |
          |-------+--------+--------+--------+--------+--------+-------|
          | 80MB  | (1) 1M | (1) 1M | (1) 1M | (1) 1M | (1) 8M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 8M x  |
          |       |        |        |        |        |        |  36   |
          |-------+--------+--------+--------+--------+--------+-------|
          | 88MB  | (1) 1M | (1) 1M | (1) 2M | (1) 2M | (1) 8M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 8M x  |
          |       |        |        |        |        |        |  36   |
          |-------+--------+--------+--------+--------+--------+-------|
          | 96MB  | (1) 4M | (1) 4M | (1) 4M | (1) 4M | (1) 4M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 4M x  |
          |       |        |        |        |        |        |  36   |
          |-------+--------+--------+--------+--------+--------+-------|
          | 96MB  | (1) 4M | (1) 8M | (1) 8M |  NONE  |  NONE  | NONE  |
          |       |  x 36  |  x 36  |  x 36  |        |        |       |
          |-------+--------+--------+--------+--------+--------+-------|
          | 96MB  | (1) 2M | (1) 2M | (1) 2M | (1) 2M | (1) 8M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 8M x  |
          |       |        |        |        |        |        |  36   |
          |-------+--------+--------+--------+--------+--------+-------|
          | 104MB | (1) 1M | (1) 1M | (1) 4M | (1) 4M | (1) 8M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 8M x  |
          |       |        |        |        |        |        |  36   |
          |-------+--------+--------+--------+--------+--------+-------|
          | 112MB | (1) 2M | (1) 2M | (1) 4M | (1) 4M | (1) 8M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 8M x  |
          |       |        |        |        |        |        |  36   |
          |-------+--------+--------+--------+--------+--------+-------|
          | 128MB | (1) 8M | (1) 8M | (1) 8M | (1) 8M |  NONE  | NONE  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |        |       |
          |-------+--------+--------+--------+--------+--------+-------|
          | 128MB | (1) 4M | (1) 4M | (1) 4M | (1) 4M | (1) 8M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 8M x  |
          |       |        |        |        |        |        |  36   |
          |-------+--------+--------+--------+--------+--------+-------|
          | 136MB | (1) 1M | (1) 1M | (1) 8M | (1) 8M | (1) 8M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 8M x  |
          |       |        |        |        |        |        |  36   |
          |-------+--------+--------+--------+--------+--------+-------|
          | 144MB | (1) 2M | (1) 2M | (1) 8M | (1) 8M | (1) 8M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 8M x  |
          |       |        |        |        |        |        |  36   |
          |-------+--------+--------+--------+--------+--------+-------|
          | 160MB | (1) 4M | (1) 4M | (1) 8M | (1) 8M | (1) 8M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 8M x  |
          |       |        |        |        |        |        |  36   |
          |-------+--------+--------+--------+--------+--------+-------|
          | 192MB | (1) 8M | (1) 8M | (1) 8M | (1) 8M | (1) 8M |  (1)  |
          |       |  x 36  |  x 36  |  x 36  |  x 36  |  x 36  | 8M x  |
          |       |        |        |        |        |        |  36   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |       Size       |     U16 - U23      |     U24 - U31      |
          |------------------+--------------------+--------------------|
          |      256KB       |    (8) 32K x 8     |        NONE        |
          |------------------+--------------------+--------------------|
          |      512KB       |    (8) 32K x 8     |    (8) 32K x 8     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          | Size  |       J3        |       J4        |      J35       |
          |-------+-----------------+-----------------+----------------|
          | NONE  |   pins 1 & 2    |   pins 1 & 2    |      Open      |
          |       |     closed      |     closed      |                |
          |-------+-----------------+-----------------+----------------|
          | 256KB |   pins 2 & 3    |   pins 1 & 2    |   pins 1 & 2   |
          |       |     closed      |     closed      |     closed     |
          |-------+-----------------+-----------------+----------------|
          | 512KB |   pins 2 & 3    |   pins 2 & 3    |   pins 2 & 3   |
          |       |     closed      |     closed      |     closed     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CPU POWER SUPPLY SELECTION                 |
          |------------------------------------------------------------|
          |   Function    |     J40      |     J41      |     J42      |
          |---------------+--------------+--------------+--------------|
          |    5V for     |    Jumper    |     N/A      |     N/A      |
          |    Pentium    |    blocks    |              |              |
          |---------------+--------------+--------------+--------------|
          |   5.3V for    | Power module |     N/A      |     N/A      |
          |    Pentium    |              |              |              |
          |---------------+--------------+--------------+--------------|
          |   5.3 V for   |     N/A      | Power module |     N/A      |
          |    ground     |              |              |              |
          |---------------+--------------+--------------+--------------|
          |   5.3 V for   |     N/A      |     N/A      | Power module |
          |    ground     |              |              |              |
          +------------------------------------------------------------+