134 Commits

Author	SHA1	Message	Date
Thomas Harte	20c1c6fdcd	Add sanity check on sprite fetches versus draws.	2023-04-03 22:46:49 -04:00
Thomas Harte	514022204e	Attempt to avoid lingering sprite elements.	2023-04-02 22:45:02 -04:00
Thomas Harte	564ee1a5cb	Fix sprites on first line of display.	2023-03-30 23:45:19 -04:00
Thomas Harte	f3c2c0ffa9	Synchronise fetch and draw sprite buffer usage.	2023-03-30 19:11:00 -04:00
Thomas Harte	931d2373a4	Attempt to make outer loop sole owner of line/sprite buffer selection.	2023-03-30 00:20:03 -04:00
Thomas Harte	655638656f	Elide the two fills; fix address masking.	2023-03-21 20:05:34 -04:00
Thomas Harte	e66a92d6cb	Fill in and use some parts of mode description.	2023-03-18 23:07:33 -04:00
Thomas Harte	a6251f436a	Provide commands with [unpopulated] mode parameters.	2023-03-18 13:39:47 -04:00
Thomas Harte	4a5b2fd9ba	Eliminate logged TODOs that I don't intend to action soon.	2023-03-16 22:00:47 -04:00
Thomas Harte	a5a36cb08e	Add missing status storage; capture mode 2 sprite collision locations.	2023-03-15 23:06:32 -04:00
Thomas Harte	aa4582956f	Add TODO.	2023-03-15 22:37:47 -04:00
Thomas Harte	131784d007	Generalise PointSet to read or write.	2023-03-13 22:51:01 -04:00
Thomas Harte	cc04349618	Reestablish relationship between fetch and output.	2023-03-11 22:24:11 -05:00
Thomas Harte	da944fde92	Eliminate data-type assumption.	2023-03-10 21:04:35 -05:00
Thomas Harte	2913368a06	Attempt YMMM.	2023-03-08 23:12:02 -05:00
Thomas Harte	82659e7924	Unify existing moves.	2023-03-08 22:36:06 -05:00
Thomas Harte	f3a84021ed	Merge branch 'MSX2' of github.com:TomHarte/CLK into MSX2	2023-03-08 18:28:17 -05:00
Thomas Harte	555d883227	Yamaha fetches don't require an outer switch.	2023-03-08 18:28:13 -05:00
Thomas Harte	6845008fd4	Place end-of-frame interrupt appropriately.	2023-03-07 22:12:06 -05:00
Thomas Harte	cc7b209e1a	Adjust visible Y9938 area; clamp scrolled y; use proper mode 2 terminator.	2023-03-07 18:19:08 -05:00
Thomas Harte	e8404bdcc0	TODO is done, probably.	2023-03-06 22:57:53 -05:00
Thomas Harte	f8eb2199c2	Fix relative offset.	2023-03-06 22:49:21 -05:00
Thomas Harte	a13905acf9	Attempt to incorporate scroll offset into line interrupt.	2023-03-06 21:41:43 -05:00
Thomas Harte	0ea1da10d6	Attempt to generalise moving from CPU.	2023-03-03 21:40:48 -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	bfa167fcdf	Make attempt at the TP background-colour bit.	2023-02-26 13:42:59 -05:00
Thomas Harte	62d381065e	Change 9938 identification number.	2023-02-21 19:35:11 -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	44ac948bb2	Add expansion RAM, albeit not yet into the command engine.	2023-02-20 22:27:30 -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	bbccc5d6d6	Route other holdover TMS modes through the Yamaha logic.	2023-02-16 22:07:18 -05:00
Thomas Harte	3f2a5929a3	Consolidate text output and support blinking; add sprites-enabled flag.	2023-02-15 20:18:56 -05:00
Thomas Harte	bf0ed2813c	Make faulty attempt at 80-column text.	2023-02-14 20:13:51 -05:00
Thomas Harte	5c7367b262	Route Yamaha 40-column text mode appropriately.	2023-02-13 22:24:39 -05:00
Thomas Harte	169d7a7418	Fix[/revert]: the fetch pointer should be _ahead_.	2023-02-13 21:10:14 -05:00
Thomas Harte	914a9e0c84	Yamaha: don't touch address at all unless a RAM access.	2023-02-11 22:43:29 -05:00
Thomas Harte	8768ee1504	Merge branch 'MSX2' of github.com:TomHarte/CLK into MSX2	2023-02-11 22:40:03 -05:00
Thomas Harte	8e6c36bb15	Yamaha: don't part-modify address.	2023-02-11 10:35:42 -05:00
Thomas Harte	3c3efe3e22	Don't be so fussy.	2023-02-06 22:16:42 -05:00
Thomas Harte	a3df106f92	Reset write phase only upon traditional register accesses.	2023-02-06 20:32:24 -05:00
Thomas Harte	b538407386	Introduce separate state for palette entries.	2023-02-06 19:12:02 -05:00
Thomas Harte	f9c88fd598	Fix memory mask; mildly improve commentary.	2023-02-05 22:51:16 -05:00
Thomas Harte	67755c3811	Attempt [H/L]MMM.	2023-02-04 21:29:44 -05:00
Thomas Harte	a2786e6266	Invest Colour with its own logic, including potential emptiness.	2023-02-04 21:14:20 -05:00
Thomas Harte	46d009f27b	Add logical fill.	2023-02-04 10:31:41 -05:00
Thomas Harte	6d315b4660	Switch to specifying number of bits, to reduce potential error.	2023-02-02 12:12:11 -05:00