COMPUADD, INC.

HARDCACHE/ESDI

Data bus: 16-bit, ISA

Size: Full-length, full-height card

Hard drives supported: Two RLL ESDI drives

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

[Image]

                           CONNECTIONS

                  Function                        Location

  20-pin data cable connector-drive 1                J1

  20-pin data cable connector-drive 0                J2

  34-pin data cable connector-floppy drive           J3

  34-pin control cable connector-hard drive          J4

  4-pin connector-drive active LED                   J5

                        USER CONFIGURABLE SETTINGS

               Function                    Location           Setting

  »   Floppy drive type is AT-type            W1             pins 1 & 2
                                                               closed

      Floppy drive type is PS/2 type          W1             pins 2 & 3
      1.44MB                                                   closed

  »   Floppy Drive Interrupt is IRQ6          W2             pins 1 & 2
                                                               closed

      Floppy Drive Interrupt is               W2             pins 2 & 3
      IRQ10                                                    closed

  »   Floppy Drive DMA Acknowledge            W3             pins 1 & 2
      is DACK2                                                 closed

      Floppy Drive DMA Acknowledge            W3             pins 2 & 3
      is DACK3                                                 closed

  »   Floppy Drive DMA Request is             W4             pins 1 & 2
      DREQ2                                                    closed

      Floppy Drive DMA Request is             W4             pins 2 & 3
      DREQ3                                                    closed

  »   Hard drive address 1F0-1F7h             W5                open

      Hard drive address 170-177h             W5               closed

  »   Floppy drive address 3F0-3F7h           W6                open

      Floppy drive address 370-377h           W6               closed

  »   BIOS enabled                            W7               closed

      BIOS disabled                           W7                open

  »   BIOS address C800-C9FFh                 W8                open

      BIOS address CA00-CBFFh                 W8               closed

  »   Floppy drive enabled                    W9                open

      Floppy drive disabled                   W9               closed

  »   Floppy drive single spindle             W10               open
      speed enabled

      Floppy drive dual spindle               W10              closed
      speed enabled

  »   256KB SIMM's supported                  W11            pins 1 & 2
                                                               closed

      1MB SIMM's supported                    W11            pins 2 & 3
                                                               closed

  »   Block Data Transfer mode                W12            pins 1 & 2
      enabled                                                  closed

      IRQ-Paced Data Transfer mode            W12            pins 2 & 3
      enabled                                                  closed

  »   Factory configured - do not             W13               open
      alter