CMS ENHANCEMENTS, INC.

UNIVERSAL AT/XT CONTROLLER

  Data bus:                  16-bit ISA

  Size:                      Half length, full-height card

  Hard drive supported:      Two IDE(AT) interface drives

  Floppy drives supported:   None

[Image]

                                CONNECTIONS

                   Function                             Location

  40-pin IDE(AT) interface connector                       J3

  External power connector                                 J4

  Replaceable controller chip                              U2

            Note: Chip U2 can be replaced with a U2 A/X-30 chip for
            compatibility with some PS-2 model 30 systems.

                         USER CONFIGURABLE SETTING

                Function                     Location          Setting

  »   Factory configured - do not             SW1/1              N/A
      alter

  »   Factory configured - do not             SW1/2              N/A
      alter

  »   Controller enabled                      SW1/3              on

      Controller disabled                     SW1/3              off

  »   CMS drive C select                      SW1/4              on

      CMS drive D select                      SW1/4              off

  »   I/O address select 1F0 - 1F7h           SW1/7              on

      I/O address select 170 - 177h           SW1/7              off

                        BASE MEMORY ADDRESS SELECT

           Address                    SW1/5                 SW1/6

  »           C8000h                   off                   off

              D8000h                   off                    on

              CC000h                   on                    off

              DC000h                   on                     on

                   XT COMPATIBLE INTERRUPT CONFIGURATION

                  IRQ                                 SW1/8

  »                 IRQ5                                on

                    IRQ2                               off

                   AT COMPATIBLE INTERRUPT CONFIGURATION

                  IRQ                                 SW1/8

  »                IRQ14                                on

                   IRQ11                               off