Help with Xmodem program

[Ben Smith]

In article <35 at infopro.UUCP> david at infopro.UUCP (David Fiedler) writes:
>Has anyone gotten Steve Grandi's xmodem program running on Xenix
>(specifically, SV/386/2.2.2)? The program compiles and runs but does
>not seem to transfer data in any mode. Patches, sources, even binaries
>welcome -- failing that, does anyone have *any* xmodem that runs on Xenix?

I am checking out UMODEM. Is SV/386/2.2.2 roughly equivalent to SCO ?