RANCHO TECHNOLOGY, INC.
=======================

   RT10-AT

   +------------------------------------------------------------+
   +------------------------------------------------------------+

   Data bus: 16-bit, ISA

   Size: Full-length, full-height card

   Hard drives supported:  Up to seven SCSI devices

   Floppy drives supported: None

<gopher://bitreich.org/I/th99/c/P-R/20175-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                Function                 |     Location     |
   |-----------------------------------------+------------------|
   | 50-pin SCSI connector-internal          |        J1        |
   |-----------------------------------------+------------------|
   | 50-pin SCSI connector-external          |        J2        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     I/O PORT ADDRESS                      ||
   |-----------------------------------------------------------||
   |Address | W1/1 | W1/2 | W1/3 |W1/4 | W1/5 |W1/6|W1/7|W1/8* ||
   |--------+------+------+------+-----+------+----+----+------||
   |>> |340h |closed|closed|closed|open |closed|open|open|closed||
   |--+-----+------+------+------+-----+------+----+----+------||
   |  |348h | open |closed|closed|open |closed|open|open|closed||
   |--+-----+------+------+------+-----+------+----+----+------||
   |  |350h |closed| open |closed|open |closed|open|open|closed||
   |--+-----+------+------+------+-----+------+----+----+------||
   |  |358h | open | open |closed|open |closed|open|open|closed||
   |--+-----+------+------+------+-----+------+----+----+------||
   |  |360h |closed|closed| open |open |closed|open|open|closed||
   |--+---------------------------------------------------------|
   |  |Note * Open disables Port Address                        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        BIOS ADDRESS                        |
   |------------------------------------------------------------|
   |  Address  | W2/1  | W2/2 | W2/3 |  W2/4  |  W2/5  | W2/6*  |
   |-----------+-------+------+------+--------+--------+--------|
   |>> | D000h | pins  | pins | pins | closed |  open  | closed |
   |   |       | 1 & 2 | 2 &  | 2 &  |        |        |        |
   |   |       |       |  3   |  3   |        |        |        |
   |---+-------+-------+------+------+--------+--------+--------|
   |   | D400h | pins  | pins | pins | closed |  open  | closed |
   |   |       | 1 & 2 | 2 &  | 1 &  |        |        |        |
   |   |       |       |  3   |  2   |        |        |        |
   |---+-------+-------+------+------+--------+--------+--------|
   |   | D800h | pins  | pins | pins |  open  |  open  | closed |
   |   |       | 1 & 2 | 2 &  | 2 &  |        |        |        |
   |   |       |       |  3   |  3   |        |        |        |
   |---+-------+-------+------+------+--------+--------+--------|
   |   | DC00h | pins  | pins | pins |  open  |  open  | closed |
   |   |       | 1 & 2 | 2 &  | 1 &  |        |        |        |
   |   |       |       |  3   |  2   |        |        |        |
   |---+-------+-------+------+------+--------+--------+--------|
   |   | C000h | pins  | pins | pins | closed | closed | closed |
   |   |       | 1 & 2 | 2 &  | 2 &  |        |        |        |
   |   |       |       |  3   |  3   |        |        |        |
   |---+-------+-------+------+------+--------+--------+--------|
   |   | C400h | pins  | pins | pins | closed | closed | closed |
   |   |       | 1 & 2 | 2 &  | 1 &  |        |        |        |
   |   |       |       |  3   |  2   |        |        |        |
   |---+-------+-------+------+------+--------+--------+--------|
   |   | C800h | pins  | pins | pins |  open  | closed | closed |
   |   |       | 1 & 2 | 2 &  | 2 &  |        |        |        |
   |   |       |       |  3   |  3   |        |        |        |
   |---+-------+-------+------+------+--------+--------+--------|
   |   | CC00h | pins  | pins | pins |  open  | closed | closed |
   |   |       | 1 & 2 | 2 &  | 1 &  |        |        |        |
   |   |       |       |  3   |  2   |        |        |        |
   |------------------------------------------------------------|
   | Note:Pins designated should be in the closed position.     |
   |                                                            |
   | * Open disables BIOS Address                               |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               INTERRUPT REQUEST (BUS MASTER)               |
   |------------------------------------------------------------|
   |   IRQ   |   W6/9   |  W6/10  |  W6/11  |  W6/12  |  W6/13  |
   |---------+----------+---------+---------+---------+---------|
   |  IRQ15  |  closed  |  open   |  open   |  open   |  open   |
   |---------+----------+---------+---------+---------+---------|
   |  IRQ14  |   open   | closed  |  open   |  open   |  open   |
   |---------+----------+---------+---------+---------+---------|
   |  IRQ12  |   open   |  open   | closed  |  open   |  open   |
   |---------+----------+---------+---------+---------+---------|
   |  IRQ11  |   open   |  open   |  open   | closed  |  open   |
   |---------+----------+---------+---------+---------+---------|
   |  IRQ10  |   open   |  open   |  open   |  open   | closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                          ROM SIZE                          |
   |------------------------------------------------------------|
   |       ROM Size        |  W3/pins 2 & 3   |  W3/pins 4 & 5  |
   |-----------------------+------------------+-----------------|
   | BIOS ROM size is 8KB  |       open       |      open       |
   |-----------------------+------------------+-----------------|
   | BIOS ROM size is 16KB |      closed      |      open       |
   |-----------------------+------------------+-----------------|
   | BIOS ROM size is 32KB |      closed      |     closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DMA CHANNEL (HOST)                     |
   |------------------------------------------------------------|
   | Channel | W4/jumpers 7 & | W4/jumpers 8 & | W4/jumpers 9 & |
   |         |       10       |       11       |       12       |
   |---------+----------------+----------------+----------------|
   |    1    |     closed     |      open      |      open      |
   |---------+----------------+----------------+----------------|
   |    2    |      open      |     closed     |      open      |
   |---------+----------------+----------------+----------------|
   |    3    |      open      |      open      |     closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  INTERRUPT REQUEST (HOST)                  |
   |------------------------------------------------------------|
   | IRQ  |  W4/1  |  W4/2  |  W4/3  |  W4/4  |  W4/5  |  W4/6  |
   |------+--------+--------+--------+--------+--------+--------|
   | IRQ3 | closed |  open  |  open  |  open  |  open  |  open  |
   |------+--------+--------+--------+--------+--------+--------|
   | IRQ4 |  open  | closed |  open  |  open  |  open  |  open  |
   |------+--------+--------+--------+--------+--------+--------|
   | IRQ5 |  open  |  open  | closed |  open  |  open  |  open  |
   |------+--------+--------+--------+--------+--------+--------|
   | IRQ6 |  open  |  open  |  open  | closed |  open  |  open  |
   |------+--------+--------+--------+--------+--------+--------|
   | IRQ7 |  open  |  open  |  open  |  open  | closed |  open  |
   |------+--------+--------+--------+--------+--------+--------|
   | IRQ9 |  open  |  open  |  open  |  open  |  open  | closed |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |           READ PORT CONFIGURATION JUMPERS - JP5            |
   |------------------------------------------------------------|
   |     Setting      |  D0  |  D1  |  D2  |  D3  |  D4  |  D5  |
   |------------------+------+------+------+------+------+------|
   |Address is 340h   | open | open | N/A  | N/A  | N/A  | N/A  |
   |------------------+------+------+------+------+------+------|
   |Address is 328h   |closed| open | N/A  | N/A  | N/A  | N/A  |
   |------------------+------+------+------+------+------+------|
   |Address is 310h   | open |closed| N/A  | N/A  | N/A  | N/A  |
   |------------------+------+------+------+------+------+------|
   |Address is 300h   |closed|closed| N/A  | N/A  | N/A  | N/A  |
   |------------------+------+------+------+------+------+------|
   |RAM address. is   | N/A  | N/A  | open | N/A  | N/A  | N/A  |
   |0:4B0h            |      |      |      |      |      |      |
   |------------------+------+------+------+------+------+------|
   |RAM address. is   | N/A  | N/A  |closed| N/A  | N/A  | N/A  |
   |0:300h            |      |      |      |      |      |      |
   |------------------+------+------+------+------+------+------|
   |Data transfer     | N/A  | N/A  | N/A  | open | open | N/A  |
   |polled I/O        |      |      |      |      |      |      |
   |------------------+------+------+------+------+------+------|
   |DREQ5/DACK5 (HS)  | N/A  | N/A  | N/A  |closed| open | N/A  |
   |------------------+------+------+------+------+------+------|
   |DREQ6/DACK6 (HS)  | N/A  | N/A  | N/A  | open |closed| N/A  |
   |------------------+------+------+------+------+------+------|
   |DREQ3/DACK3       | N/A  | N/A  | N/A  |closed|closed| N/A  |
   |------------------+------+------+------+------+------+------|
   |Parity, Inquiry & | N/A  | N/A  | N/A  | N/A  | N/A  | open |
   |Verify Cmd.       |      |      |      |      |      |      |
   |enabled           |      |      |      |      |      |      |
   |------------------+------+------+------+------+------+------|
   |Parity, Inquiry & | N/A  | N/A  | N/A  | N/A  | N/A  |closed|
   |Verify Cmd.       |      |      |      |      |      |      |
   |disabled          |      |      |      |      |      |      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |           DMA CHANNEL (BUS MASTER) JUMPERS - W6            |
   |------------------------------------------------------------|
   | Channel | Jumpers 1 &  | Jumpers 2 | Jumpers 3 | Jumpers 4 |
   |         |      5       |    & 6    |    & 7    |    & 8    |
   |---------+--------------+-----------+-----------+-----------|
   |    7    |    closed    |   open    |   open    |   open    |
   |---------+--------------+-----------+-----------+-----------|
   |    6    |     open     |  closed   |   open    |   open    |
   |---------+--------------+-----------+-----------+-----------|
   |    5    |     open     |   open    |  closed   |   open    |
   |---------+--------------+-----------+-----------+-----------|
   |    0    |     open     |   open    |   open    |  closed   |
   +------------------------------------------------------------+