SP0256 Page Prefix

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Latest revision as of 09:12, 4 December 2010


The Page Prefix register provides the upper 4 bits of the address for JSR instructions, as well as branches initiated by an external SP0256 Address Load command.

(Unsure: Do JSRs push 12-bit or 16-bit addresses...? I think they push 16-bit, so RTS always returns to the right place. Need to check.)

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