
IRWIN

SC499-2

Card Type               Tape drive controller
Hard Drives supported   None
Floppy drives supported None
Data Bus                8-bit ISA
Card Size               Half-length, full-height

[Image]

                    CONNECTIONS

        Function                   Label

  Tape drive interface               J3

            Note:Number of pins is unidentified.

                        USER CONFIGURABLE SETTINGS

                Function                     Label           Position

     Factory configured - do not alter       A/8             Closed

     PC's <386-20 mode enabled               B/1              Open

      PC's >386-20 mode enabled               B/1             Closed

     POST enabled                            C/1             Closed

      POST disabled                           C/1              Open

     Factory configured - do not alter       C/2              Open

     Factory configured - do not alter       C/3              Open

     Factory configured - do not alter       C/4              Open

     Factory configured - do not alter       C/5             Closed

     Factory configured - do not alter       C/6             Closed

     Factory configured - do not alter       C/7              Open

            Note: When installing the controller in a PC >386-20 disable
            POST.

                           DMA CHANNEL SELECTION

  Channel      B1/1      B1/2       B1/3      B2/1       B2/2      B2/3

       1     Closed     Open       Open     Closed      Open      Open

       2       Open     Closed      Open      Open      Closed     Open

       3       Open      Open      Closed     Open       Open     Closed

                        BASE I/O ADDRESS SELECTION

  Address     A/1      A/2      A/3      A/4      A/5      A/6      A/7

      100h   Closed   Closed   Closed   Closed   Closed   Open     Closed

     200h   Closed   Closed   Closed   Closed   Closed   Closed   Open

      220h   Closed   Closed   Open     Closed   Closed   Closed   Open

      280h   Closed   Closed   Closed   Closed   Open     Closed   Open

      300h   Closed   Closed   Closed   Closed   Closed   Open     Open

      338h   Open     Open     Open     Closed   Closed   Open     Open

      350h   Closed   Open     Closed   Open     Closed   Open     Open

      360h   Closed   Closed   Open     Open     Closed   Open     Open

      370h   Closed   Open     Open     Open     Closed   Open     Open

                            INTERRUPT SELECTION

  Setting       B/2       B/3       B/4        B/5       B/6       B/7

      IRQ2    Closed      Open      Open      Open      Open       Open

      IRQ3    Open      Closed     Open      Open      Open       Open

      IRQ4     Open       Open     Closed     Open      Open       Open

      IRQ5     Open       Open      Open     Closed     Open       Open

      IRQ6     Open       Open      Open      Open     Closed      Open

      IRQ7     Open       Open      Open      Open      Open      Closed

                       MISCELLANEOUS TECHNICAL NOTES

  The SC499-2 is used with FasTape tape drive. The tape drive cannot be
  used in EISA systems , 486 or 386 faster than 25MHz.

