ULTRASTOR CORPORATION

ULTRA12C

Data bus: 16-bit, PC/AT

Size: Full-length, full-height card

Hard drives supported: Two ESDI drives

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

Maximum heads/cyl.: 16 heads and 1024 cylinders

[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/jumper 1     JP10/jumper 2     JP10/jumper 3

        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             JP2               open
      alter

  »   Factory configured - do not             JP3              closed
      alter

  »   Factory configured - do not             JP4               open
      alter

      Battery back-up                     JP5 and JP6          closed

  »   Supports a third floppy on DS2     JP11/jumper 1          open
      with a twisted cable

      Supports a third floppy on DS4     JP11/jumper 1         closed
      with a straight cable

  »   Floppy drive 1 is an AT type       JP11/jumper 2          open
      drive (5.25" or 3.5")

      Floppy drive 1 is a 3.5" PS/2      JP11/jumper 2         closed
      type drive

  »   Floppy drive 0 is an AT type       JP11/jumper 3          open
      drive (5.25" or 3.5")

      Floppy drive 0 is a 3.5" PS/2      JP11/jumper 3         closed
      type drive

  »   Floppy drive port address is       JP11/jumper 4          open
      3F0-3F7h

      Floppy drive port address is       JP11/jumper 4         closed
      370-377h

  »   Single speed floppy drive          JP11/jumper 5          open
      supported

      Dual speed floppy drive            JP11/jumper 5         closed
      supported

  »   Floppy drive Precomp is scaled     JP11/jumper 6          open
      by data rate:

      500KHz=125ns; 300KHz=208ns;
      250KHz=250ns

      Floppy drive precompensation       JP11/jumper 6         closed
      is 125ns.

  »   Hard drive port address is              JP12              open
      1F0-1F7h

      Hard drive port address is              JP12             closed
      170-177h

  »   Chassis ground not connected            JP16              open
      to logic ground

      Chassis ground is connected to          JP16             closed
      logic ground

  »   Floppy drive enabled                    JP17             closed

      Floppy drive disabled                   JP17              open

  »   Factory configured - do not       JP20/jumpers 2-5        open
      alter

  »   Hard Drive Interrupt is IRQ14           JP21            pins 2 & 3
                                                               closed

      Hard Drive Interrupt is IRQ15           JP21            pins 1 & 2
                                                               closed

              CACHE CONFIGURATION

   SIMM Size      Jumper JP22    Jumper JP22A

     256KB          closed          closed

      1MB            open           closed

      4MB           closed           open