It's not too negative because to be honest it's something I felt guilty about. It looks we actually have enough room left to fix that, since we're not currently

It's not too negative because to be honest it's something I felt guilty about. It looks we actually have enough room left to fix that, since we're not currently using %bp. We even have room to add the necessary push/pop for %bp to work around a bug in the original IBM PC BIOS implementation. If we make that change, then I've just confirmed with xed -r -isa-set -i sectorlisp.o that's it's pure i8086 and should work. One of us should pull out an old IBM PC and record a video of sectorlisp running on the original hardware. Anyone want to volunteer? I have one but it's difficult for me to use since I only know how to type dvorak.