Status flags: Revision history

24 October 2024

• curprev 22:3622:36, 24 October 2024‎ Fiskbit talk contribs‎ m 5,689 bytes 0‎ Adjusts the anchors so they don't skip the section heading.

3 June 2024

• curprev 08:0408:04, 3 June 2024‎ Fiskbit talk contribs‎ m 5,689 bytes +91‎ Adds short-name anchors for the flags.

2 June 2024

• curprev 08:1308:13, 2 June 2024‎ Fiskbit talk contribs‎ m 5,598 bytes 0‎ No edit summary
• curprev 07:3007:30, 2 June 2024‎ Fiskbit talk contribs‎ 5,598 bytes +305‎ Clarifies some I flag points. Removes irrelevant I flag information from the B flag table. Removes unnecessary / prefixes from IRQ and NMI (we're talking about the interrupts, not the signals). Further explains B flag usage.

1 June 2024

• curprev 09:3909:39, 1 June 2024‎ Fiskbit talk contribs‎ 5,293 bytes +54‎ Minor clarifications and additional detail.
• curprev 08:4108:41, 1 June 2024‎ Fiskbit talk contribs‎ 5,239 bytes +146‎ →‎I: Interrupt Disable: Clarifies that this only inhibits IRQ interrupts. Notes that all types of interrupt (NMI and reset, not just IRQ) set I. Clarifies that the immediate handling of an IRQ after clearing I may have a 1 instruction delay for some causes.

14 September 2023

• curprev 02:3102:31, 14 September 2023‎ Fiskbit talk contribs‎ 5,093 bytes −26‎ →‎The B flag: Minor sentence changes for clarity.

13 September 2023

• curprev 02:4802:48, 13 September 2023‎ Fiskbit talk contribs‎ 5,119 bytes +73‎ Tries to add more clarity, particularly around the always-1 bit and B flag. Moves the table of contents to a more sensible place.

15 July 2023

• curprev 15:0315:03, 15 July 2023‎ Tepples talk contribs‎ 5,046 bytes +139‎ →‎The B flag: Separate out the warning about Visual6502's space-saving approach to save space in the main text

15 December 2022

• curprev 06:4606:46, 15 December 2022‎ Lidnariq talk contribs‎ 4,907 bytes +36‎ →‎The B flag: there is no B flag, do not imply there is a B flag, D1x1 is not the B flag, visual6502 p4 is not the B flag

19 November 2022

• curprev 15:3015:30, 19 November 2022‎ Tepples talk contribs‎ 4,871 bytes −196‎ →‎The B flag: rewrite for smoothness: B flag represents a transient state
• curprev 14:5914:59, 19 November 2022‎ Tepples talk contribs‎ 5,067 bytes +224‎ →‎The B flag: Exists in CPU as transient "is interrupt being processed?" flag. One user insists that saying that doesn't exist is misinformation.

26 October 2022

• curprev 00:2500:25, 26 October 2022‎ Quietust talk contribs‎ m 4,843 bytes +47‎ →‎Z: Zero: old description could be misinterpreted as "if zero, then set, otherwise leave as-is", so clarify that it's either set OR cleared

10 March 2019

• curprev 22:5522:55, 10 March 2019‎ Krzysiobal talk contribs‎ 4,796 bytes −6‎ fixed: CMP does not modify V flag

14 December 2018

• curprev 23:5523:55, 14 December 2018‎ Qalle talk contribs‎ m 4,802 bytes +15‎ commas for readability

24 October 2018

• curprev 22:5822:58, 24 October 2018‎ Rainwarrior talk contribs‎ 4,787 bytes +67‎ hyperlinking the bitfield diagram
• curprev 21:1321:13, 24 October 2018‎ Rainwarrior talk contribs‎ 4,720 bytes −23‎ remove tautological link
• curprev 21:1221:12, 24 October 2018‎ Rainwarrior talk contribs‎ 4,743 bytes +127‎ →‎V: Overflow: another useful reference
• curprev 21:1021:10, 24 October 2018‎ Rainwarrior talk contribs‎ 4,616 bytes +34‎ →‎External links: references
• curprev 21:0921:09, 24 October 2018‎ Rainwarrior talk contribs‎ 4,582 bytes −3,076‎ old article only contains redundant information, I think the explanation from CPU status flags is better
• curprev 20:5320:53, 24 October 2018‎ Rainwarrior talk contribs‎ 7,658 bytes +1,660‎ Breaking descriptions out of the lead diagram, expanding on them.
• curprev 20:1720:17, 24 October 2018‎ Rainwarrior talk contribs‎ 5,998 bytes +2,871‎ Merging from CPU status flag behaviour

22 March 2011

• curprev 19:3419:34, 22 March 2011‎ Hamtaro126 talk contribs‎ 3,127 bytes +26‎ A bit of rewording on the Decimal mode, Fixed possible typo! (Extant, might've mean existant?)
• curprev 16:5816:58, 22 March 2011‎ Lidnariq talk contribs‎ m 3,101 bytes +12‎ the decimal bit *exists* it just does almost nothing

21 March 2011

• curprev 21:4421:44, 21 March 2011‎ Furrykef talk contribs‎ 3,089 bytes +39‎ 2A03 has no decimal mode

5 November 2010

• curprev 16:4516:45, 5 November 2010‎ Tepples talk contribs‎ 3,050 bytes +46‎ Do we need a merge?
• curprev 12:3312:33, 5 November 2010‎ Blargg talk contribs‎ 3,004 bytes +3,004‎ Created page with 'The 6502 has 6 status flags: carry, decimal mode, interrupt disable, negative, overflow, and zero. Each of these can either be set or clear. The processor stores the current stat…'