Instruction reference: Revision history

27 March 2025

• curprev 02:2602:26, 27 March 2025‎ Fiskbit talk contribs‎ m 57,074 bytes +18‎ Adds 'unsigned' to BCC/BCS descriptions to try to disambiguate from the (signed) overflow flag.
• curprev 02:1902:19, 27 March 2025‎ Fiskbit talk contribs‎ 57,056 bytes +32‎ Fixes the ADC/SBC notes on BCC/BCS, which were inverted. Also tries to make the language more clear.

26 March 2025

• curprev 12:4312:43, 26 March 2025‎ Fiskbit talk contribs‎ m 57,024 bytes +54‎ Links push and pull pseudocode to PHA and PLA to try to make behavior clear without making the pseudocode too verbose by fully spelling out the operations.

9 January 2025

• curprev 05:1805:18, 9 January 2025‎ NobleEightfold talk contribs‎ 56,970 bytes +30‎ →‎Note
• curprev 05:1105:11, 9 January 2025‎ NobleEightfold talk contribs‎ 56,940 bytes +1,347‎ No edit summary

1 November 2024

• curprev 13:3113:31, 1 November 2024‎ Fiskbit talk contribs‎ 55,593 bytes +76‎ →‎BIT - Bit Test: Improves the BIT trick explanation and notes that the trick is useful in constrained situations. (I just used it, myself, in timed code to offset the cycle cost of a conditionally-executed INC.)

28 October 2024

• curprev 03:0203:02, 28 October 2024‎ Fiskbit talk contribs‎ m 55,517 bytes +16‎ Clarifies in the titles that CMP works on A and INC and DEC work on memory.
• curprev 02:5502:55, 28 October 2024‎ Fiskbit talk contribs‎ m 55,501 bytes −3‎ →‎LSR - Logarithmic Shift Right: Fixes typo in instruction name.
• curprev 01:5901:59, 28 October 2024‎ Fiskbit talk contribs‎ m 55,504 bytes 0‎ Fixes typo.
• curprev 01:5401:54, 28 October 2024‎ Fiskbit talk contribs‎ 55,504 bytes +55,504‎ Adds a 6502 instruction reference. Everything *should* be correct. An addressing modes page with cycle-by-cycle behavior will be coming later.