STANDARD MICROSYSTEMS CORPORATION
=================================

   SMC 4004-PC

   +------------------------------------------------------------+
   |------------------------------------------------------------|
   | Data bus:                | 8-bit, ISA                      |
   |--------------------------+---------------------------------|
   | Size:                    | Half-length, full-height card   |
   |--------------------------+---------------------------------|
   | Hard drive supported:    | Two MFM ST506/412 drives        |
   |--------------------------+---------------------------------|
   | Floppy drives supported: | None                            |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/c/S-T/20265-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                 Function                  |    Location    |
   |-------------------------------------------+----------------|
   | 34-pin control cable connector-hard drive |      CN1       |
   |-------------------------------------------+----------------|
   | 20-pin data cable connector-drive 0       |      CN2       |
   |-------------------------------------------+----------------|
   | 20-pin data cable connector-drive 1       |      CN3       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                DRIVE 1 CONFIGURATION - SW1                 |
   |------------------------------------------------------------|
   |Type|Capacity|Heads|Cylinders|Jumper |Jumper |Jumper |Jumper|
   |    |        |     |         |   6   |   7   |  10   |  11  |
   |----+--------+-----+---------+-------+-------+-------+------|
   | 0  |  5MB   |  2  |   306   |closed |closed |closed |closed|
   |----+--------+-----+---------+-------+-------+-------+------|
   | 1  |  20MB  |  8  |   375   | open  |closed |closed |closed|
   |----+--------+-----+---------+-------+-------+-------+------|
   | 2  |  15MB  |  6  |   306   |closed | open  |closed |closed|
   |----+--------+-----+---------+-------+-------+-------+------|
   | 3  |  10MB  |  4  |   306   | open  | open  |closed |closed|
   |----+--------+-----+---------+-------+-------+-------+------|
   | 4* |  5MB   |  2  |   306   |closed |closed | open  |closed|
   |----+--------+-----+---------+-------+-------+-------+------|
   | 5  |  30MB  |  5  |   637   | open  |closed | open  |closed|
   |----+--------+-----+---------+-------+-------+-------+------|
   | 6  |  20MB  |  4  |   612   |closed | open  | open  |closed|
   |----+--------+-----+---------+-------+-------+-------+------|
   |7** |  20MB  |  4  |   612   | open  | open  | open  |closed|
   |------------------------------------------------------------|
   |Note:*Type 4 is Buffered Seek Version of Type 0.            |
   |                                                            |
   |**Type 7 is a Precomp Version of Type 6.                    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                DRIVE 0 CONFIGURATION - SW1                 |
   |------------------------------------------------------------|
   |Type|Capacity|Heads|Cylinders|Jumper |Jumper |Jumper |Jumper|
   |    |        |     |         |   8   |   9   |  12   |  13  |
   |----+--------+-----+---------+-------+-------+-------+------|
   | 0  |  5MB   |  2  |   306   |closed |closed |closed |closed|
   |----+--------+-----+---------+-------+-------+-------+------|
   | 1  |  20MB  |  8  |   375   | open  |closed |closed |closed|
   |----+--------+-----+---------+-------+-------+-------+------|
   | 2  |  15MB  |  6  |   306   |closed | open  |closed |closed|
   |----+--------+-----+---------+-------+-------+-------+------|
   | 3  |  10MB  |  4  |   306   | open  | open  |closed |closed|
   |----+--------+-----+---------+-------+-------+-------+------|
   | 4* |  5MB   |  2  |   306   |closed |closed | open  |closed|
   |----+--------+-----+---------+-------+-------+-------+------|
   | 5  |  30MB  |  5  |   637   | open  |closed | open  |closed|
   |----+--------+-----+---------+-------+-------+-------+------|
   | 6  |  20MB  |  4  |   612   |closed | open  | open  |closed|
   |----+--------+-----+---------+-------+-------+-------+------|
   |7** |  20MB  |  4  |   612   | open  | open  | open  |closed|
   |------------------------------------------------------------|
   |Note:*Type 4 is Buffered Seek Version of Type 0.            |
   |                                                            |
   |**Type 7 is a Precomp Version of Type 6.                    |
   +------------------------------------------------------------+

   x

   +------------------------------------------------------------+
   |                        BIOS ADDRESS                        |
   |------------------------------------------------------------|
   |  Address   | SW1/jumper 1  | SW1/jumper 2  | SW1/jumper 5  |
   |------------+---------------+---------------+---------------|
   |  Disabled  |      N/A      |      N/A      |     open      |
   |------------+---------------+---------------+---------------|
   |   C800h    |    closed     |     open      |    closed     |
   |------------+---------------+---------------+---------------|
   |   CA00h    |     open      |    closed     |    closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        I/O ADDRESS                         |
   |------------------------------------------------------------|
   |     Address      |    SW1/jumper 3    |    SW1/jumper 4    |
   |------------------+--------------------+--------------------|
   |       320h       |        open        |        open        |
   |------------------+--------------------+--------------------|
   |       324h       |        open        |       closed       |
   |------------------+--------------------+--------------------|
   |       328h       |       closed       |        open        |
   |------------------+--------------------+--------------------|
   |       32Ch       |       closed       |       closed       |
   +------------------------------------------------------------+