UNIX Compatibility Notes

Some of the applications we want to port are POSIX-based, so we have set up a UNIX compatibility environment. Many (though certainly not all) UNIX applications will cross-compile fairly readily.

The compability library makes a number of assumptions about the use of capability registers and other parts of the environment, which are documented here.

KR1	Constituents node
KR2	Key to self domain root
KR3	File system root (a directory)
KR4	Space bank
KR5	Schedule key
KR6	Open file list (a supernode)
KR7	Returner.
KR8	Reserved for use by the library as a scratch register. When no ``system call'' is in progress, can be used as a scratch register by the process.