PC Card Controller PC472C Only | Black Box PC470C, PC478C, PC473C

5250 ADAPTER CARDS: HARDWARE INSTALLATION MANUAL

values selected to be programmed into the PC471C’s non-volatile memory. In the Fixed Resource Mode, a PnP system will not be able to move the board’s resources and will assign the fixed values programmed in the adapter’s non-volatile memory. This should only be used when running an emulation program that does not support the flexible resource assignment of a PnP system. When using the 5250 Enabler and VxD, you should stay with the Normal PnP mode.

PC Card Controller (PC472C Only)

The PC Card Controller menu allows the selection of the method used to configure the 5250 PCMCIA Adapter Card. Generally speaking, there are two methods: via software using Card Services, or via hardware using a selection for the type of PC Card Controller hardware in your system.

Card Services is an industry-standard software driver that is used to enable PC Cards. This driver was either provided with your PC. or is available from various sources. The Card Services driver is not provided with the 5250 PCMCIA Adapter Card. The 5250 PCMCIA Adapter Card can work with Card Services version 2.00 or greater.

By using Card Services to enable all PC Cards, it is possible to avoid conflicts between the cards and with other system components. Using Card Services is the recommended method of enabling the 5250 PCMCIA Adapter Card.

When the Card Services menu item is selected on the PC Card Controller menu, the “Values Assigned by” menu appears. The menu allows further customization of the Card Services configuration method. There are three choices:

•Values Assigned by Card Services: Card Services searches all sockets for the 5250 PCMCIA Adapter Card and assigns the base I/O port address, the memory segment, and the interrupt level. This is the recommended method.

•Values Assigned by User: Card Services is used to enable the 5250 PCMCIA Adapter Card, but the selection of all values (including the socket) must be done by you.

•Values Assigned by Enabler: Card Services searches all sockets for the 5250 PCMCIA Adapter Card, and is used to enable the card, but the Enabler program chooses the values from the CFG5250.DAT file.

If the “Values Assigned by” selection is either Card Services or Enabler, the base I/O port address, memory segment address, interrupt level, and socket items on the Hardware menu are inaccessible, since any user-selected values would be ignored.