ARCO COMPUTER PRODUCTS
======================

   ACD-ROM

   Data Bus      32-bit VESA Local Bus                            
   Card Size     Three-quarter length, half-height card           
   Hard Drives   Four IDE (AT) drives                             
   supported     
   Floppy drives None                                             
   supported     
   RAID levels   Two 360KB, 720KB, 1.2MB, 1.44MB or 2.88MB drives 
   supported     

<gopher://bitreich.org/I/th99/c/A-B/21401-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |     Function      | Location |     Function     | Location |
   |-------------------+----------+------------------+----------|
   | 40-pin primary    |    J1    | 25-pin parallel  |    P2    |
   | IDE(AT) connector |          | port - external  |          |
   |-------------------+----------+------------------+----------|
   | 40-pin secondary  |    J2    | 34-pin cable     |    P3    |
   | IDE(AT) connector |          | connector -      |          |
   |                   |          | floppy drive     |          |
   |-------------------+----------+------------------+----------|
   | 2-pin connector - |   LED1   | 9-pin serial     |    P4    |
   | primary drive     |          | port 1 -         |          |
   | active LED        |          | external         |          |
   |-------------------+----------+------------------+----------|
   | 2-pin connector - |   LED2   | 10-pin serial    |    P5    |
   | mirror drive      |          | port 1 -         |          |
   | active LED        |          | internal         |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                USER CONFIGURABLE SETTINGS                  |
   |------------------------------------------------------------|
   |              Function              |  Label   |  Position  |
   |------------------------------------+----------+------------|
   |>> | IDE(AT) interface enabled      | JP1/pins |    Open    |
   |   |                                |  5 & 6   |            |
   |---+--------------------------------+----------+------------|
   |   | IDE(AT) interface disabled     | JP1/pins |   Closed   |
   |   |                                |  5 & 6   |            |
   |---+--------------------------------+----------+------------|
   |>> | IDE(AT) IRQ 14 select          |   JP2    | Pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | IDE(AT) IRQ 15 select          |   JP2    | Pins 3 & 4 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Parallel port IRQ 7 select     |   JP5    | Pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Parallel port IRQ 5 select     |   JP5    | Pins 3 & 4 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Factory configured - do not    |   JP10   |  Reserved  |
   |   | alter                          |          |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |           IRQ AND SERIAL PORT ADDRESS SELECTION            |
   |------------------------------------------------------------|
   |     Port      |   IRQ    | JP6/pins 1 & 2 | JP6/pins 3 & 4 |
   |---------------+----------+----------------+----------------|
   |  COM1 (3F8h)  |    4     |     Closed     |      Open      |
   |---------------+----------+----------------+----------------|
   |  COM2 (2F8h)  |    3     |      Open      |     Closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            BIOS SEGMENT ADDRESS CONFIGURATION              |
   |------------------------------------------------------------|
   | Segment Address |  JP3/1   |  JP3/2   |  JP3/3   |  JP3/4  |
   |-----------------+----------+----------+----------+---------|
   |>> | C800h-CBFFh |  Closed  |   Open   |  Closed  | Closed  |
   |---+-------------+----------+----------+----------+---------|
   |   | CC00h-CEFFh |  Closed  |   Open   |   Open   | Closed  |
   |---+-------------+----------+----------+----------+---------|
   |   | D000h-D3FFh |   Open   |  Closed  |  Closed  | Closed  |
   |---+-------------+----------+----------+----------+---------|
   |   | D400h-D7EEh |   Open   |  Closed  |   Open   | Closed  |
   |---+-------------+----------+----------+----------+---------|
   |   | D800h-DBFFh |   Open   |   Open   |  Closed  | Closed  |
   |---+-------------+----------+----------+----------+---------|
   |   | DC00h-DEFFh |   Open   |   Open   |   Open   | Closed  |
   |---+-------------+----------+----------+----------+---------|
   |   |  Disabled   |   Open   |   Open   |   Open   |  Open   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                INTERNAL REGISTER SELECTION                 |
   |------------------------------------------------------------|
   |         Setting          | JP1/pins 1 & 2 | JP1/pins 3 & 4 |
   |--------------------------+----------------+----------------|
   |  Appian Chip AD4, AD8,   |     Closed     |      Open      |
   |     ADC use internal     |                |                |
   |         register         |                |                |
   |--------------------------+----------------+----------------|
   |  Appian Chip Dr, B8, BC  |      Open      |      Open      |
   |           use            |                |                |
   |                          |                |                |
   |    internal register     |                |                |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   DMA CHANNEL SELECTION                    |
   |------------------------------------------------------------|
   |       Channel        |                 JP4                 |
   |----------------------+-------------------------------------|
   |   |        1         |      Pins 2 & 4, 3 & 5 closed       |
   |---+------------------+-------------------------------------|
   |   |        3         |      Pins 1 & 3, 4 & 6 closed       |
   |---+------------------+-------------------------------------|
   |>> |       None       |                Open                 |
   +------------------------------------------------------------+