There are a number of options available for Mac based programming solutions. Aside from the use of a windows emulator on a Mac, native assemblers are available and SERIAL programmers abound. To search for assemblers point your browser at "search.shareware.com" and try the keyword assembler. I also have a demo copy of 5Asm from Micro Dialects and it appears to be a nice full featured assembler for the Mac. Another site of interest is "www.access.ch/whoswho/showwho?rklingler". I have not used any of the products pictured there but Mac based assemblers and programmers are being offered. Hope this helps. John Miskimins