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| | 2003_09_09.html Trash-80 |
 | | Zilog got away with this obvious misappropriation of "intellectual property" (and produced a better processor, to boot), whereas when Chuck Peddle, formerly of Motorola, came out with the 6501, whose instruction set was like his ex-employer's 6800 processor, lawyers paid him a call. |
 | | Peddle, lacking the resources for a courtroom battle, withdrew the 6501, reworked the instruction set, and released the MOS Technology 6502. |
 | | The 6502 had some interesting er...features, one being the infamous JMP indirect bug and another being an ambiguous response if an IRQ and NMI were simultaneously detected (which interrupt had higher priority -- I always assumed the NMI but the processor didn't always agree with me). |
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