
ADAPTEC, INC.

ACB-2002A, ACB-2010A

Data bus:                8-bit, ISA
Size:                    Full-length, full-height card
Hard drives supported:   Two MFM ST506 drives
Floppy drives supported: None

[Image]

                           CONNECTIONS

                  Function                        Location

  20-pin data cable connector-drive 0                J0

  20-pin data cable connector-drive 1                J1

  34-pin control cable connector-hard drive          J2

                  USER CONFIGURABLE SETTINGS - ACB-2002A

                Function
                                             Location
                                                               Setting

  
      Step Rate is: 13 m

      200 m
                                                AB
                                                               closed


      Step Rate is: 70 m

      3msec with step code 3
                                                AB
                                                                open

  
      Not used
                                                CD
                                                                open

  
      Wedge servo enabled
                                                EF
                                                               closed


      Dedicated track servo enabled
                                                EF
                                                                open

  
      Not used
                                                GH
                                                                open

  
      Not used
                                                IJ
                                                                open

  
      Normal operation
                                                KL
                                                                open


      Self diagnotics enabled
                                                KL
                                                               closed

              DRIVE TYPE CONFIGURATION - DRIVE 0 - ACB 2010A

           Type                   CD             EF              MN

  Drive is hard sectored        closed          open           closed
  lomega Beta-5

  Drive is Syquest 312 or        open          closed            N/A
  DMA 360 drive

  Drive is soft sectored         open           open             N/A
  ST506 type

              DRIVE TYPE CONFIGURATION - DRIVE 1 - ACB 2010A

           Type
                                  GH
                                                 IJ
                                                                 QR

  Drive is hard sectored
  lomega Beta-5
                                closed
                                                open
                                                               closed

  Drive is Syquest 312 or
  DMA 360 drive
                                 open
                                               closed
                                                                 N/A

  Drive is soft sectored
  ST506 type
                                 open
                                                open
                                                                 N/A

                      BIOS DRIVE TYPE TABLE ACB-2010A

  Table #    Heads     Cylinders     Capacity    MN-Drive 0   OP-Drive 0

                                                 QR-Drive 1   ST-Drive 1

    0          2          612        10.65MB       closed       closed

    1          2          306         5.32MB       closed        open

    2          4          480        16.71MB        open        closed

    3          4          306        10.65MB        open         open

        MISCELLANEOUS TECHNICAL NOTES

      Jumpers WX, UV, YZ are Not used.

  Jumper EF is Not used on Model ACB-2010A.

