MAPLE SYSTEMS
=============

   MC-1165A

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

   Data Bus: 16-bit, ISA

   Size: Three-quarter-length, full-height card

   Hard Drives Supported: Two ESDI drives

   Floppy Drives Supported: Two 360KB, 720KB, 1.2MB, and 1.44MB
   drives

<gopher://bitreich.org/I/th99/c/M-O/20132-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                   Function                   |  Location   |
   |----------------------------------------------+-------------|
   | 34-pin data cable connector - floppy drive   |     J2      |
   |----------------------------------------------+-------------|
   | 34-pin control cable connector - hard drive  |     J3      |
   |----------------------------------------------+-------------|
   | 20-pin data cable connector - drive 0        |     J4      |
   |----------------------------------------------+-------------|
   | 20-pin data cable connector - drive 1        |     J5      |
   |----------------------------------------------+-------------|
   | 4-pin connector - drive active LED           |     J22     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              | Location |  Setting   |
   |------------------------------------+----------+------------|
   |>> | Virtual split disabled         |    J1    | pins 1 & 2 |
   |   |                                |          |    open    |
   |---+--------------------------------+----------+------------|
   |   | Virtual split enabled          |    J1    | pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Factory configured - do not    |    J1    | pins 3 & 4 |
   |   | alter                          |          |    open    |
   |---+--------------------------------+----------+------------|
   |>> | Port addresses are 1F0-1F7 and |    J7    | pins 1 & 2 |
   |   | 3F0-3F7h                       |          |    open    |
   |---+--------------------------------+----------+------------|
   |   | Port addresses are 170-177 and |    J7    | pins 1 & 2 |
   |   | 370-377h                       |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Floppy drive enabled           |    J7    | pins 3 & 4 |
   |   |                                |          |    open    |
   |---+--------------------------------+----------+------------|
   |   | Floppy drive disabled          |    J7    | pins 3 & 4 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Single speed floppy enabled    |    J8    |    open    |
   |---+--------------------------------+----------+------------|
   |   | Dual speed floppy enabled      |    J8    |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Hard Drive Interrupt is IRQ 14 |    J9    | pins 2 & 3 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Hard Drive Interrupt is IRQ 15 |    J9    | pins 1 & 2 |
   |   |                                |          |   closed   |
   |------------------------------------------------------------|
   | Note:Pins 3 & 4 on Jumper J1 are Not used.                 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        BIOS ADDRESS                        |
   |------------------------------------------------------------|
   |  Address   | J6/pins 1 & 2 | J6/pins 3 & 4 | J6/pins 5 & 6 |
   |------------+---------------+---------------+---------------|
   |   C8000h   |     open      |     open      |     open      |
   |------------+---------------+---------------+---------------|
   |   D4000h   |    closed     |     open      |     open      |
   |------------+---------------+---------------+---------------|
   |   D0000h   |     open      |    closed     |     open      |
   |------------+---------------+---------------+---------------|
   |   D8000h   |    closed     |    closed     |     open      |
   |------------+---------------+---------------+---------------|
   |   CC000h   |     open      |     open      |    closed     |
   |------------+---------------+---------------+---------------|
   |   DC000h   |    closed     |     open      |    closed     |
   |------------+---------------+---------------+---------------|
   |  Disabled  |     open      |    closed     |    closed     |
   +------------------------------------------------------------+