(TXT) View Source
       
       # ADAPTEC, INC.
       
           ACB-2070A
       
           Data bus:                 8-bit, ISA                          
       
           Size:                     Full-length, full-height card       
       
           Hard drives supported:    Two RLL ST506 drives                
       
           Floppy drives supported:  None                                
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |                  Function                   |   Location   |
          |---------------------------------------------+--------------|
          | 20-pin data cable connector -drive 0        |      J0      |
          |---------------------------------------------+--------------|
          | 20-pin data cable connector-drive 1         |      J1      |
          |---------------------------------------------+--------------|
          | 34-pin control cable connector-floppy drive |      J2      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   BIOS DRIVE TYPE TABLE                    |
          |------------------------------------------------------------|
          |Table # |Hds |Cyls |MFM Cap.|RLL Cap. |MN-Drive 0|OP-Drive 0|
          |        |    |     |        |         |          |          |
          |        |    |     |        |         |QR-Drive 1|ST Drive 1|
          |--------+----+-----+--------+---------+----------+----------|
          | 0      | 4  | 615 | 21.41MB| 32.74MB | closed   | closed   |
          |--------+----+-----+--------+---------+----------+----------|
          | 1      | 2  | 612 | 10.65MB| 16.29MB | closed   | open     |
          |--------+----+-----+--------+---------+----------+----------|
          | 2      | 5  | 981 | 42.69MB| 65.29MB | open     | closed   |
          |--------+----+-----+--------+---------+----------+----------|
          | 3      | 4  | 612 | 21.30MB| 32.58MB | open     | open     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function                | Location | Setting |
          |---------------------------------------+----------+---------|
          | » |  Factory configured - do not      |  AB      |  open   |
          |   |  alter                            |          |         |
          |---+-----------------------------------+----------+---------|
          | » |  Factory configured - do not      |  CD      |  open   |
          |   |  alter                            |          |         |
          |---+-----------------------------------+----------+---------|
          | » |  Drive 0 is a soft-sectored       |  EF      |  open   |
          |   |  ST506-type drive                 |          |         |
          |---+-----------------------------------+----------+---------|
          |   |  Drive 0 is a removable cartridge |  EF      |  closed |
          |   |  Syquest SQ319R                   |          |         |
          |---+-----------------------------------+----------+---------|
          | » |  Drive 1 is a soft-sectored       |  GH      |  open   |
          |   |  ST506-type drive                 |          |         |
          |---+-----------------------------------+----------+---------|
          |   |  Drive 1 is a removable cartridge |  GH      |  closed |
          |   |  Syquest SQ319R                   |          |         |
          |---+-----------------------------------+----------+---------|
          | » |  CN3 and CN2 normal setting       |  IJ      |  open   |
          |---+-----------------------------------+----------+---------|
          |   |  CN2 and CN3 drive swap           |  IJ      |  closed |
          |---+-----------------------------------+----------+---------|
          | » |  Normal operation                 |  KL      |  open   |
          |---+-----------------------------------+----------+---------|
          |   |  Self diagnostics enable          |  KL      |  closed |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               MISCELLANEOUS TECHNICAL NOTES                |
          |------------------------------------------------------------|
          |  If Jumper IJ is set to "closed" then the data cable       |
          |  connector assignments are swapped-                        |
          |                                                            |
          |  CN2 becomes drive 1 and CN3 drive 0.                      |
          |                                                            |
          | Other drives may be attached by use of the user-definable  |
          |                parameters through software.                |
          +------------------------------------------------------------+