(TXT) View Source
       
       # ADAPTEC, INC.
       
          AHA-2840VL, AHA-2842VL
       
           Data bus:           32-bit VL-Bus                             
       
           Size:               Full-lengh, full-height card              
       
           Hard drive          Up to seven SCSI devices                  
           supported:          
       
           Floppy drives       Two 360KB, 720KB, 1.2MB, or 1.44MB        
           supported:          drives                                    
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |                 Function                 |    Location     |
          |------------------------------------------+-----------------|
          | 4-pin connector - drive active LED       |       J1        |
          |------------------------------------------+-----------------|
          | 34-pin floppy drive connector            |       J2        |
          |------------------------------------------+-----------------|
          | 50-pin SCSI connector - internal         |       J3        |
          |------------------------------------------+-----------------|
          | 50-pin SCSI connector - external         |       J4        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |             Function              |  Location   | Setting  |
          |-----------------------------------+-------------+----------|
          | »  | Floppy drive enabled         | S1/switch 5 |   off    |
          |----+------------------------------+-------------+----------|
          |    | Floppy drive disabled        | S1/switch 5 |    on    |
          |----+------------------------------+-------------+----------|
          | »  | Host adapter BIOS enabled    | S1/switch 8 |   off    |
          |----+------------------------------+-------------+----------|
          |    | Host adapter BIOS disabled   | S1/switch 8 |    on    |
          |------------------------------------------------------------|
          |   Note: Disabling the host adapter BIOS for non-disk       |
          |   devices such as CD-ROM drives, tape drives, will reduce  |
          |   boot up time.                                            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   I/O ADDRESS SELECTION                    |
          |------------------------------------------------------------|
          |  Address  |S1/Switch 1 |S1/Switch 2|S1/Switch 3|S1/Switch 4|
          |-----------+------------+-----------+-----------+-----------|
          |»| 1C000h  |    off     |    off    |    off    |    off    |
          |-+---------+------------+-----------+-----------+-----------|
          | | 2C000h  |     on     |    off    |    off    |    off    |
          |-+---------+------------+-----------+-----------+-----------|
          | | 3C000h  |    off     |    on     |    off    |    off    |
          |-+---------+------------+-----------+-----------+-----------|
          | | 4C000h  |     on     |    on     |    off    |    off    |
          |-+---------+------------+-----------+-----------+-----------|
          | | 5C000h  |    off     |    off    |    on     |    off    |
          |-+---------+------------+-----------+-----------+-----------|
          | | 6C000h  |     on     |    off    |    on     |    off    |
          |-+---------+------------+-----------+-----------+-----------|
          | | 7C000h  |    off     |    on     |    on     |    off    |
          |-+---------+------------+-----------+-----------+-----------|
          | | 8C000h  |     on     |    on     |    on     |    off    |
          |-+---------+------------+-----------+-----------+-----------|
          | | 9C000h  |    off     |    off    |    off    |    on     |
          |-+---------+------------+-----------+-----------+-----------|
          | | AC000h  |     on     |    off    |    off    |    on     |
          |-+---------+------------+-----------+-----------+-----------|
          | | BC000h  |    off     |    on     |    off    |    on     |
          |-+---------+------------+-----------+-----------+-----------|
          | | CC000h  |     on     |    on     |    off    |    on     |
          |-+---------+------------+-----------+-----------+-----------|
          | | DC000h  |    off     |    off    |    on     |    on     |
          |-+---------+------------+-----------+-----------+-----------|
          | | EC000h  |     on     |    off    |    on     |    on     |
          |-+---------+------------+-----------+-----------+-----------|
          | |Reserved |    off     |    on     |    on     |    on     |
          |-+---------+------------+-----------+-----------+-----------|
          | |Reserved |     on     |    on     |    on     |    on     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   BASE ADDRESS SELECTION                   |
          |------------------------------------------------------------|
          |     Address      |    S1/Switch 6     |    S1/Switch 7     |
          |------------------+--------------------+--------------------|
          |      D8000h      |        off         |        off         |
          |------------------+--------------------+--------------------|
          |      C8000h      |         on         |        off         |
          |------------------+--------------------+--------------------|
          |      D0000h      |        off         |         on         |
          |------------------+--------------------+--------------------|
          |      E0000h      |         on         |         on         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               MISCELLANEOUS TECHNICAL NOTES                |
          |------------------------------------------------------------|
          |   Only single-ended SCSI devices can be connected to the   |
          |                     AHA-2840VL/2842VL.                     |
          +------------------------------------------------------------+