available at ftp://ftp.unix4fun.org/z80pack/

This release fixes two problems:

Some programs, like Z-System history shell and UCSD p-System IV.0, use
busy waiting loops on the console status port. This loops cause high CPU
usage on the host system, but without that the emulator would do
anything really useful. A reliable algorithm is implemented, that slows
down the emulation in such situations, without affecting performance, if
other work is to do. This is not so easy as one might think, because we
also have to take care about realtime OS's like MP/M.

The UNIX terminal line discipline added a CR for any LF send to the
terminal. This was not a problem with any CP/M software I have seen, but
the UCSD fullscreen editor relies on LF going down one line , and
nothing else. Now the editor is more pleasant to use than before.

Enjoy,
Udo Munk
--
The real fun is building it and then using it...