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Is there No bugs in the monitor program?


No bugs in the first, smaller, version of the software (256 bytes of code blown into PROM by Nick Toop?s PROM blower). There were a couple of problems with the cassette interface software because I got the order of bits the wrong way round (from the CUTS? standard). But hey, it was only 512 bytes: you can?t make any mistakes in that even when you write it by hand, hand assemble it and hand enter it into the PROM blower! Besides, it could debug itself to a fair extent (given that it basically worked).

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Explain Why did you choose to design the computer around the MOS Technologies 6502 microprocessor?You were an undergraduate student at Cambridge then. Explain what were you studying?