eoneil@BBN.COM (Betty O'Neil) (05/12/91)
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