ULTRASTOR CORPORATION

ULTRA12F24

  Data bus:                16-bit, ISA

  Size:                    Three/Quarter-length, full-height card

  Hard drive supported:    Two ESDI drives

  Floppy drives            Two 360KB, 720KB, 1.2MB, or 1.44MB
  supported:

[Image]

                           CONNECTIONS

                  Function                        Location

  34-pin data cable connector-floppy drive           J1

  20-pin data cable connector-drive 1                J3

  20-pin data cable connector-drive 0                J4

  34-pin control cable connector-hard drive          J5

  4-pin connector-drive active LED                   J6

                               BIOS ADDRESS

        Address              JP10/A          JP10/B            JP10/C

          Disabled            open            open              open

  »        C800h              open            open             closed

           CC00h              open           closed             open

           D000h              open           closed            closed

           D400h             closed           open              open

           D800h             closed           open             closed

           DC00h             closed          closed             open

          Disabled           closed          closed            closed

                        USER CONFIGURABLE SETTINGS

                Function                    Location          Setting

  »   Factory configured - do not              JP4           pins 1 & 2
      alter                                                     open

  »   Cache enabled                            JP4           pins 3 & 4
                                                                open

      Cache disabled                           JP4           pins 3 & 4
                                                               closed

  »   Third drive support with a             JP11/A             open
      double twisted cable

      Third drive support with a             JP11/A            closed
      single twisted cable

  »   Floppy Drive 1 is a 3.5 or 5.25        JP11/B             open
      AT floppy

      Floppy Drive 1 is a 3.5 PS/2           JP11/B            closed
      floppy

  »   Floppy Drive 0 is a 3.5 or 5.25        JP11/C             open
      AT floppy

      Floppy Drive 0 is a 3.5 PS/2           JP11/C            closed
      floppy

  »   Floppy primary port address is         JP11/D             open
      3F0-3F7h

      Floppy secondary port address is       JP11/D            closed
      370-377h

  »   Single speed floppy drive              JP11/E             open
      support

      Dual speed floppy drive support        JP11/E            closed

  »   Precompensation varies: 250ns,         JP11/F             open
      208ns, 125ns

      Precompensation set to 125ns           JP11/F            closed

  »   Hard disk primary I/O address is        JP12              open
      1F0-1F7

      Hard disk secondary I/O address         JP12             closed
      is 170-177h

  »   Floppy drive enabled                    JP17             closed

      Floppy drive disabled                   JP17              open

  »   Interrupt is IRQ14                      JP20           pins 2 & 3
                                                               closed

      Interrupt is IRQ15                      JP20           pins 1 & 2
                                                               closed

                 DRAM CONFIGURATION NOTE

  Note: The ULTRA12F24 is installed with 32KB of cache.