
ADAPTEC, INC.

ACB-2370

Data bus:                16-bit, ISA
Size:                    Half-length, full-height card
Hard drives supported:   Two RLL ST506/412 drives
Floppy drives supported: None

[Image]

                           CONNECTIONS

                  Function                        Location

  20-pin data cable connector-drive 1                J1

  20-pin data cable connector-drive 0                J2

  34-pin control cable connector-hard drive          J3

  3-pin connector-drive active LED                   J5

  Serial monitor output                              J10

                        USER CONFIGURABLE SETTINGS

               Function                    Location           Setting

     Hard drive port address            J6/jumper 1           open
      1F0-1F7h

      Hard drive port address            J6/jumper 1          closed
      170-177h

     Zero wait state enabled            J6/jumper 3           open

      Zero wait state disabled           J6/jumper 3          closed

     35 m sec step rate and             J6/jumper 4           open
      recalibrate to 0 minus 1

      16 m sec step rate and             J6/jumper 4          closed
      recalibrate to 0

     Serial monitor mode disabled       J6/jumper 6           open

      Serial monitor mode enabled        J6/jumper 6          closed
      (2400 baud)

     Hard drive Interrupt is IRQ14          J13             pins 1 & 2
                                                              closed

      Hard drive Interrupt is IRQ15          J13             pins 2 & 3
                                                              closed

     BIOS address C800h                     J14             pins 1 & 2
                                                              closed

      BIOS address CC00h                     J14             pins 2 & 3
                                                              closed

      BIOS disabled                          J14           all pins open

                       MISCELLANEOUS TECHNICAL NOTES

   Jumpers J6/jumper 2 and J6/jumper 5 are not used. Jumpers J4, J7, J8,
   J9, J11, J12 and J15 are for factory tests and should not be altered.
     Pins 3 & 4 on jumper J13 should never be closed. J13 or J14 should
              never have more than two pins closed at a time.

