# Using IBM AS/400 PC Support Program

IBM PC Support requires the Smart LLC interface with the PCS parameter.

NetWare for SAA requires the Smart IPX interface.

### Extended PC Support

IBM produces two versions of PC Support for DOS computers. The
extended version includes a memory manager (PCSXI) that allows you to
load much of the software into memory above 1MByte. If you are using
the extended version, switch Smart Ringnodes to any IO address other
than 0A20 or 1A20. Note that IBM does not support DOS V4 expanded
memory managers for this extended version of IBM PC Support.