LOMAS DATA PRODUCTS, INC.
=========================

   LDP CACHE IV

   +------------------------------------------------------------+
   |------------------------------------------------------------|
   | Data bus:         | 16-bit, ISA                            |
   |-------------------+----------------------------------------|
   | Size:             | Full-length, full-height card          |
   |-------------------+----------------------------------------|
   | Hard drive        | Up to seven SCSI devices               |
   | supported:        |                                        |
   |-------------------+----------------------------------------|
   | Floppy drives     | Two 360KB, 720KB, 1.2MB, or 1.44MB     |
   | supported:        | drives                                 |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/c/I-L/20419-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                    Function                     | Location |
   |-------------------------------------------------+----------|
   | 50-pin SCSI connector - internal                |    J1    |
   |-------------------------------------------------+----------|
   | 25-pin SCSI II connector - external (optional   |    J2    |
   | feature)                                        |          |
   |-------------------------------------------------+----------|
   | 34-pin control cable connector - floppy drive   |    J3    |
   |-------------------------------------------------+----------|
   | 2-pin connector - Error LED                     |    J4    |
   |-------------------------------------------------+----------|
   | 20-pin factory test connector - internal        |    J5    |
   |-------------------------------------------------+----------|
   | 2-pin connector - Drive active LED              |    J6    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |           Function            |   Location   |   Setting   |
   |-------------------------------+--------------+-------------|
   |>> | Floppy drive enabled      |     JP1      |   closed    |
   |---+---------------------------+--------------+-------------|
   |   | Floppy drive disabled     |     JP1      |    open     |
   |---+---------------------------+--------------+-------------|
   |>> | BIOS enabled              |     JP8      |   closed    |
   |---+---------------------------+--------------+-------------|
   |   | BIOS disabled             |     JP8      |    open     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              | Location |  Setting   |
   |------------------------------------+----------+------------|
   |>> | I/O port address is 320h       |   JP9    |   closed   |
   |   | (primary)                      |          |            |
   |---+--------------------------------+----------+------------|
   |   | I/O port address is 324h       |   JP9    |    open    |
   |   | (secondary)                    |          |            |
   |---+--------------------------------+----------+------------|
   |>> | Controller supplies TERMPWR to |   JP10   |   closed   |
   |   | SCSI interface 26              |          |            |
   |---+--------------------------------+----------+------------|
   |   | TERMPWR not supplied to SCSI   |   JP10   |    open    |
   |   | Interface 26                   |          |            |
   |---+--------------------------------+----------+------------|
   |>> | 1x9 SIMM module configuration  |   JP11   | pins 1 & 2 |
   |   | enabled                        |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | 4x9 SIMM module configuration  |   JP11   | pins 2 & 3 |
   |   | enabled                        |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Error LED status software      |   JP12   | pins 1 & 2 |
   |   | interrogation enabled          |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Error LED status software      |   JP12   | pins 2 & 3 |
   |   | interrogation disabled         |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Interrupt Request is IRQ14     |   JP13   | pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Interrupt Request is IRQ15     |   JP13   | pins 2 & 3 |
   |   |                                |          |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        BIOS ADDRESS                        |
   |------------------------------------------------------------|
   |      Address      |     Jumper JP6     |    Jumper JP7     |
   |-------------------+--------------------+-------------------|
   |>> |     C800h     |       closed       |      closed       |
   |---+---------------+--------------------+-------------------|
   |   |     CA00h     |        open        |      closed       |
   |---+---------------+--------------------+-------------------|
   |   |     D000h     |       closed       |       open        |
   |---+---------------+--------------------+-------------------|
   |   |     D800h     |        open        |       open        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               MISCELLANEOUS TECHNICAL NOTES                |
   |------------------------------------------------------------|
   |     Jumper JP2 is factory configured -- do not alter.      |
   |                                                            |
   |  If secondary I/O port address is enabled, configure JP13  |
   |           to pins 2 & 3 closed -- IRQ15 enabled.           |
   +------------------------------------------------------------+