Difference between revisions of "SP0256 Page Prefix"

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Revision as of 22:40, 18 January 2005

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.)