IOMEGA CORPORATION

PC2, PC2B

  Data bus:                  8-bit ISA

  Size:                      Half-length, full-height card

  Hard drive supported:      None

  Floppy drives supported:   Two Bernoulli Box drives

[Image]

                               CONNECTIONS

                     Function                             Location

  34-pin Bernoulli Box connector - external drive           CN1

                        USER CONFIGURABLE SETTINGS

              Function                    Location           Setting

  »   DMA channel 3 select                  SW3                off

      DMA channel 1 select                  SW3                 on

  »   DMA enabled                           SW4                off

      PIO (Programmed Input/Ouput)          SW4                 on
      enabled

  »   IRQ5 select                           SW6                off

      IRQ7 select                           SW6                 on

  »   Factory configured - do not           SW7                off
      alter

  »   Two 10MB Bernoulli drives in          SW8                off
      system

      One 10MB Bernoulli drive in           SW8                 on
      system

                          PORT ADDRESS SELECTION

         Address                SW1             SW2              SW5

  »          340h                on              on              off

             348h                on              on              on

             350h               off              on              off

             358h               off              on              on

             360h                on             off              off

             368h                on             off              on

             370h               off             off              off

           Disabled             off             off              off

                     ROM ADDRESS SELECTION (PC2B ONLY)

           Address                JP1        JP2        JP3        JP4

            C800:0000h -         1 & 2      1 & 2      1 & 2      1 & 2
            C800:1FFFh

            CA00:0000h -         1 & 2      1 & 2      1 & 2      2 & 3
            CA00:1FFFh

  »         CE00:0000h -         1 & 2      1 & 2      2 & 3      2 & 3
            CE00-1FFFh

            D000:0000h -         1 & 2      2 & 3      1 & 2      1 & 2
            D000:1FFFh

            D200:0000h -         1 & 2      2 & 3      1 & 2      2 & 3
            D200:1FFFh

            D400:0000h -         1 & 2      2 & 3      2 & 3      1 & 2
            D400:1FFFh

            D600:0000h -         1 & 2      2 & 3      2 & 3      2 & 3
            D600:1FFFh

            D800:0000h -         2 & 3      1 & 2      1 & 2      1 & 2
            D800:1FFFh

            DA00:0000h -         2 & 3      1 & 2      1 & 2      2 & 3
            DA00:1FFFh

            DC00:0000h -         2 & 3      1 & 2      2 & 3      1 & 2
            DC00:1FFFh

            DE00:0000h -         2 & 3      1 & 2      2 & 3      2 & 3
            DE00:1FFFh

            E000:0000h -         2 & 3      2 & 3      1 & 2      1 & 2
            E000:1FFFh

            E200:0000h -         2 & 3      2 & 3      1 & 2      2 & 3
            E200:1FFFh

            E400:0000h -         2 & 3      2 & 3      2 & 3      1 & 2
            E400:1FFFh

         RAM/ROM disabled        2 & 3      2 & 3      2 & 3      2 & 3

  Note: Designated pins should be in the closed position.

                       MISCELLANEOUS TECHNICAL NOTES

   Model PC2 is the same as PC2B with the exception of jumper shunts, and
   RAM and ROM chips. PC2 can be upgraded to PC2B by ordering an upgrade
                    kit that includes shunts and chips.