1327 Commits

Author	SHA1	Message	Date
Thomas Harte	caaba836ba	Correct GR7 rasterisation and 6/7 collection.	2023-03-05 13:43:53 -05:00
Thomas Harte	8fc043247c	Fix column addressing in modes 6 and 7.	2023-03-04 21:39:00 -05:00
Thomas Harte	e58a488add	Rotate command-engine addresses in modes 6 and 7.	2023-03-03 23:06:52 -05:00
Thomas Harte	0ea1da10d6	Attempt to generalise moving from CPU.	2023-03-03 21:40:48 -05:00
Thomas Harte	3381e6b5aa	Switch to Duff's device.	2023-03-02 22:16:18 -05:00
Thomas Harte	4c1973adc8	Fill in missing rasterisers.	2023-03-01 23:19:33 -05:00
Thomas Harte	318cfab67d	Attempt ongoing state for vertical on/off.	2023-02-28 22:28:14 -05:00
Thomas Harte	1ef34b1f18	Clarify meaning of STOP.	2023-02-26 14:28:24 -05:00
Thomas Harte	12bd71cfe1	Allow that the next interrupt line might be in the next frame.	2023-02-26 14:23:38 -05:00
Thomas Harte	c7128f4206	Reduce logging.	2023-02-26 14:01:23 -05:00
Thomas Harte	95fd5a52ba	Use redirected palette in bitmap modes.	2023-02-26 13:59:17 -05:00
Thomas Harte	bfa167fcdf	Make attempt at the TP background-colour bit.	2023-02-26 13:42:59 -05:00
Thomas Harte	b948761f30	Detect mode 2 collisions, albeit without proper reporting.	2023-02-25 10:42:44 -06:00
Thomas Harte	dd65074bbf	Add named getters, resolving composition bug.	2023-02-25 10:32:47 -06:00
Thomas Harte	9debed25e8	Fix meaning of 'origin'.	2023-02-25 08:53:00 -06:00
Thomas Harte	1bdf9a50e6	Take a shot at Mode 2 sprite output.	2023-02-25 08:48:16 -06:00
Thomas Harte	2592dfd78f	Pile on the TODOs.	2023-02-21 22:33:47 -05:00
Thomas Harte	ef5d05db53	Scale down new-mode coordinates; add note to self.	2023-02-21 22:28:39 -05:00
Thomas Harte	6a2cda7074	Pull out and partially generalise sprite output. ... This also provides the intended route to supporting Mode 2.	2023-02-21 22:00:00 -05:00
Thomas Harte	62d381065e	Change 9938 identification number.	2023-02-21 19:35:11 -05:00
Thomas Harte	091c1b0f45	Correct sprite attribute and colour table addresses.	2023-02-21 19:34:26 -05:00
Thomas Harte	a28b5bdeea	Only on the Sega are line interrupts disabled by a read of S#0.	2023-02-20 23:43:23 -05:00
Thomas Harte	2e45422b03	Make a further attempt at sprite colour.	2023-02-20 22:39:34 -05:00
Thomas Harte	3606f5befe	Add expansion RAM to command engine, as far as it goes.	2023-02-20 22:32:36 -05:00
Thomas Harte	44ac948bb2	Add expansion RAM, albeit not yet into the command engine.	2023-02-20 22:27:30 -05:00
Thomas Harte	4bac782121	One final (?) time with colour.	2023-02-19 22:15:59 -05:00
Thomas Harte	318109b7d5	Try again with colour.	2023-02-19 22:14:18 -05:00
Thomas Harte	6990ba9242	Fetch colour from before attribute table.	2023-02-19 22:10:22 -05:00
Thomas Harte	54be424159	Include sprite index in SpriteY event.	2023-02-19 22:04:38 -05:00
Thomas Harte	8d900cf636	Attempt a full collection of Mode 2 sprite properties.	2023-02-19 21:52:10 -05:00
Thomas Harte	6db939f48f	Create a dedicated sprite fetcher.	2023-02-19 21:37:24 -05:00
Thomas Harte	5eae11434a	Sprite mode 2: select sprites, fetch locations and names.	2023-02-18 22:56:05 -05:00
Thomas Harte	7aa8728b39	Reimagine G3 for sprite mode 2.	2023-02-18 21:50:12 -05:00
Thomas Harte	270c5dfe85	Eliminate data_block_ entirely.	2023-02-18 21:41:22 -05:00
Thomas Harte	d6e4f12fdc	Merge DataBlock and Pattern.	2023-02-18 21:34:09 -05:00
Thomas Harte	4e3e4806b9	Eliminate assert; events have overtaken this.	2023-02-17 23:01:42 -05:00
Thomas Harte	ebc596820e	Obtain the background graphics, at least, for G3.	2023-02-17 22:47:15 -05:00
Thomas Harte	b62e899039	Avoid need for shortcuts.	2023-02-17 22:34:52 -05:00
Thomas Harte	a123ef151c	Eliminate further magic ORs.	2023-02-17 22:31:21 -05:00
Thomas Harte	5b31db700b	Deduplicate 40-column text fetching.	2023-02-17 22:23:10 -05:00
Thomas Harte	8af0a2313c	Formally distinguish fetchers and sequencing.	2023-02-17 22:20:38 -05:00
Thomas Harte	88eaa4ff02	[Mostly] avoid magic address constants; avoid duplication of TMS fetching logic.	2023-02-17 21:59:39 -05:00
Thomas Harte	c140f370fe	Attempt to copy and paste my way to working type-1 sprites.	2023-02-16 22:46:19 -05:00
Thomas Harte	023da1970a	Label all character events with IDs.	2023-02-16 22:21:24 -05:00
Thomas Harte	211e145230	Make room for an ID field on Event.	2023-02-16 22:10:16 -05:00
Thomas Harte	bbccc5d6d6	Route other holdover TMS modes through the Yamaha logic.	2023-02-16 22:07:18 -05:00
Thomas Harte	dbfc9a14aa	Introduce SMS fetcher, eliminating all macros.	2023-02-16 22:01:20 -05:00
Thomas Harte	9630a1bc39	Use a fetcher for character modes.	2023-02-16 13:15:18 -05:00
Thomas Harte	3847c9c281	Add missing underscore.	2023-02-15 21:22:51 -05:00
Thomas Harte	3f2a5929a3	Consolidate text output and support blinking; add sprites-enabled flag.	2023-02-15 20:18:56 -05:00