🚀 go-pugleaf

Several years ago a student and I ported the vol I Xinu onto
the Motorola Educational Computer Board, a 68000 singleboard system
with only 32K of memory.  Not surprisingly it easily runs out of
memory on that system so I never wrote about it.  Now I have
ported it to ATT7300s, aka 3B1s or UNIX PCs.  These come with
at least 512K of memory, usually 1M, a MC68010, a simple paging
system, and serial and parallel ports.  I wonder how many other
CS departments got a bunch of these free when we did, and now
see them dying from hard-disk and video problems.  But don't
throw them away!  Turn them into great Xinu systems--as long
as the floppy still works to boot the standalone debugger/
downloader; the rest of the system seems quite sturdy.
Once the system is booted, the Xinu programs are downloaded
from a UNIX host using the serial port (at up to 19.2K baud).

I'm happy to distribute both the SA support and the Xinu port.
Do I need to do it through Perdue or can I just put it up for
anonymous ftp at my site?  The sources are still only for the
Vol. I version, and build for either the Educational Computer
Board or the ATT7300.
--Betty O'Neil  
eoneil@cs.umb.edu