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The following information is incorrect, but preserved for future notice The most important difference is that PDP-5 doesn't have "Zero Page Addressing" as on PDP-8 PDP-5's instruction format: Op-code: 3 bits Indirect: 1 bit In-Page Address: 8 bits PDP-8's instruction format: Op-code: 3 bits Indirect: 1 bit Zero Page: 1 bit In-Page Address: 7 bits


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