INDIRECT-INDEXED READS CROSS CONDITIONALLY; STA ALWAYS READS PROVISIONALLY

MOS manual section 6.11, Example 6.11 diagrams the five-cycle no-cross indirect-indexed read: fetch opcode and pointer operand, read pointer low from zero page, read pointer high from the wrapped next zero-page byte, then read the effective address after adding Y. Section 6.12, Example 6.12 shows that a page cross first reads the old-page/new-low provisional address and discards its data, then consumes final data in cycle six.

Raw traces, ROM material, local paths, and personal data are not part of this public record.