Chuck Guzis wrote: At one time or another, cross-assemblers in FORTRAN were coded up for most of the early 8-bit chips. I believe that Intel even offered one as a standard product at one time. GI certainly did--I have it mentioned in their product brochure. The real problem would be locating one of these. In all likelihood, one last saw existence as a stretch of 9-track 1/2" tape. Cheers, Chuck --------------------- That was a standard practice back in the 1960's. I still have paper listings of a FORTRAN program to cross assemble CDC 160-A code on a 3300. And I think (been a few years) that I have the same cross assemblers for the 1604 and 924 machines. Later, there were 6600 FORTRAN cross assemblers for all the 3000 machines. My copies of these are on a 7 track tape which now resembles a solid disk of celluloid, sadly. The card decks went into the dumpster on the last move. But you are correct about 8 bit support using FORTRAN. I know I had paper listings for the 6502, 8080 and Z80 processors. And I think I still have the BASIC cross assembler for the 6502. Thinking about it, I also gave Al a paper tape for a 6502 assembler that I used on an Apple II with a teletype. I'll have to ask Al if he has had any luck archiving it. There were definitely FORTRAN cross assemblers for the Motorola chips (6800 &6809) floating around for years. But I don't think I ever saved any. Must look and see. Billy