Peter Moreton wrote: > 1/2" magtape? - pah! Modern stuff! What about 80 column punchcards, and > 1 inch punched paper tape? I've definitely used 80 column punch cards and 1 inch paper tape, but those don't have "write tabs". I once wrote a small operating system for minicomputer. While bootstrapping up the operating system I used paper tape as my binary library. All the routines were spliced together on a single roll. When I changed a routine, all I had to do was cut out the old version and splice in the new one that was dumped straight from the assembler to the paper tape punch. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com _______________________________________________ http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist