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Author	SHA1	Message	Date
Thomas Harte	aeff59addc	Implemented motion 'correctly', for programs written to do all work outside of the pixel area.	2017-02-11 20:25:49 -05:00
Thomas Harte	7ab6023a0c	Ensured no attempt to call strcmp on null if a file name without an extension got into here.	2017-02-11 13:36:36 -05:00
Thomas Harte	97cdfea9e9	Resolved spurious static analyser complaint: input_size and output_size aren't supposed to have defined values if input or output is null. But whatever.	2017-02-11 13:36:09 -05:00
Thomas Harte	aff69dbc34	Resolved spurious static analyser issue; screen mode will always be 0–6 but it doesn't know that. Setting a non-zero divider doesn't feel worth worrying about for a cleaner compile.	2017-02-11 13:35:22 -05:00
Thomas Harte	6381e4e1b0	All that's happened to position is that numbers have been added to it. So it can't be negative, given that it wasn't before. So a regular modulo will do.	2017-02-11 13:34:36 -05:00
Thomas Harte	c8e595d9aa	Merge branch 'master' into TIAImprovements	2017-02-11 13:20:52 -05:00
Thomas Harte	8c88fd4261	Merge pull request #99 from TomHarte/StartupRace ... Resolves a race condition on machine startup	2017-02-11 13:18:19 -05:00
Thomas Harte	a86a6367b5	Slightly shuffled to avoid a race condition on the best-effort updater.	2017-02-11 13:17:11 -05:00
Thomas Harte	905ed1f87b	Switched to the more natural type, which is also signed, making my logic less prone to error.	2017-02-11 13:16:53 -05:00
Thomas Harte	8de6caf6ff	Started trying to get into a proper structure here. Chickened out.	2017-02-11 12:59:13 -05:00
Thomas Harte	327c19a222	Slightly shuffled to avoid a race condition on the best-effort updater.	2017-02-11 12:58:47 -05:00
Thomas Harte	40d3f5f7f6	Attempted properly to respect start.	2017-02-11 08:26:09 -05:00
Thomas Harte	64d5712d1d	Added an incorrectly-coded version of horizontal move, at least so that I can verify that information is going into the correct slots.	2017-02-10 07:23:43 -05:00
Thomas Harte	3b20d862f0	Made an initial attempt to mark sprite positions. But without hmove implemented, they're all over the place.	2017-02-09 20:53:42 -05:00
Thomas Harte	2e9ef2b0ef	Took a shot at reinstating the horizontal blank extend flag.	2017-02-09 18:37:19 -05:00
Thomas Harte	70745286a5	Ensured this array is properly aligned for the uin32_t accesses I intend to make for background drawing.	2017-02-08 20:25:23 -05:00
Thomas Harte	dcb7584060	Added the four-cycle playfield output latency and ensured you can't get smaller-than-usual pixels by rapid register value changing.	2017-02-08 07:30:32 -05:00
Thomas Harte	a477499724	Got a bit more explicit with range returned by get_cycles_until_horizontal_blank and hence attempted a more thorough (/correct) version of WSYNC.	2017-02-07 22:14:45 -05:00
Thomas Harte	944d835eea	Switched explicitly to an accumulation model for filling the collision buffer.	2017-02-06 21:59:28 -05:00
Thomas Harte	8f5039130c	Changed index naming order to ensure no out-of-bounds accesses.	2017-02-06 21:48:41 -05:00
Thomas Harte	ba165bb70a	Made an attempt properly to populate collision registers from the collision buffer.	2017-02-06 21:15:55 -05:00
Thomas Harte	474e2e8d2c	Fixed once again to respect mid-line palette changes.	2017-02-06 20:09:12 -05:00
Thomas Harte	8b8eb787df	Fixed complete invisibility.	2017-02-06 18:42:58 -05:00
Thomas Harte	66bcdd36f3	Made an attempt to introduce an intermediate buffer that ends up with a bit mask of all graphical components present on it, and to use that to infer collision flags and colours, based on playfield priority and colour palette. Immediately yielding: a blank screen. Good work!	2017-02-06 18:29:00 -05:00
Thomas Harte	fcf8cafb5d	Sought to ensure that communicating a colour burst in multiple parts doesn't ruin the phase.	2017-02-06 18:27:44 -05:00
Thomas Harte	6bcf95042c	Started trying to be a bit more explicit about usage, and to divide up drawing responsibility.	2017-02-05 17:51:56 -05:00
Thomas Harte	23f3ccd77a	Made a further attempt to prevent overwrites.	2017-02-05 17:47:34 -05:00
Thomas Harte	f2437cb257	Added some additional documentation, started making steps towards returning sprites, fixed a counter bug that would exhibit as incorrect sync.	2017-01-31 20:30:32 -05:00
Thomas Harte	abe04334c2	Attempted to retain more player information, and removed the output cursor from class storage as I think it's acceptable as a temporary.	2017-01-30 22:42:27 -05:00
Thomas Harte	8545707b54	Reinstituted the playfield. Probably needs more buffering though. Time to look into delays.	2017-01-30 21:38:58 -05:00
Thomas Harte	2b08758b2b	Started capturing playfield/ball and background colours.	2017-01-30 08:08:03 -05:00
Thomas Harte	764b528891	Made a first attempt at switching to a model that respects blank and sync.	2017-01-30 07:19:19 -05:00
Thomas Harte	92754ace7a	Some mild fixes get me up to having a rolling screen of vertical lines. Which is what I was hoping for right now!	2017-01-29 22:16:23 -05:00
Thomas Harte	1cc13b2799	Merge branch 'master' into TIAImprovements	2017-01-29 16:13:46 -05:00
Thomas Harte	38f944bc34	This needs to be a memmove as the areas may overlap.	2017-01-29 16:13:33 -05:00
Thomas Harte	427175b9c0	Added an extra flag to avoid potential race condition on is_full_, being reset from the background despite a write area not having been allocated.	2017-01-29 16:13:28 -05:00
Thomas Harte	ebde955356	This needs to be a memmove as the areas may overlap.	2017-01-29 16:12:48 -05:00
Thomas Harte	7fd02e7f4c	Added an extra flag to avoid potential race condition on is_full_, being reset from the background despite a write area not having been allocated.	2017-01-29 16:11:29 -05:00
Thomas Harte	d51f185dc7	Made an attempt to reintroduce the basic horizontal loop.	2017-01-29 15:43:57 -05:00
Thomas Harte	2390358c24	Prevented unbounded CPU usage, albeit without yet deciding who has authority for the clock rate.	2017-01-29 14:19:26 -05:00
Thomas Harte	2432a3b4d7	Fixed condition — >= is smarter.	2017-01-29 14:00:01 -05:00
Thomas Harte	9c3597c7e3	Attempted to reintroduce enough logic to handle [most of] line timing, such that WSYNC works. Initial objective is to get back to having a working background.	2017-01-29 13:47:36 -05:00
Thomas Harte	fba6baaa9c	Stubbed and disabled to get back to building.	2017-01-28 21:56:01 -05:00
Thomas Harte	a246530953	Supposing the TIA were implemented, this is (more or less) what the Atari 2600 would now look like.	2017-01-28 21:46:40 -05:00
Thomas Harte	0ffded72a6	Created a placeholder class for a factored-out TIA. There's a bit more it'll need to do, like vending (or receiving) a CRT but this is the full hardware stuff, I think.	2017-01-28 16:19:08 -05:00
Thomas Harte	acadfbabec	Merge pull request #97 from TomHarte/Icons ... Introduces some file association icons	2017-01-27 21:36:13 -05:00
Thomas Harte	9001cc3fc2	Added a cartridge image.	2017-01-27 21:26:11 -05:00
Thomas Harte	015b2b49f9	Introduced an incomplete set of file association icons.	2017-01-26 22:21:55 -05:00
Thomas Harte	92f928ca42	Merge pull request #96 from TomHarte/PhaseAlignedSampling ... Optimises existing composite flow	2017-01-25 21:51:11 -05:00
Thomas Harte	6d087ca054	Restored 2600 audio.	2017-01-25 21:29:19 -05:00