1130 Commits

Author	SHA1	Message	Date
Thomas Harte	cb19c2ffb0	Honour internal-clocked timing constants.	2023-01-08 14:10:06 -05:00
Thomas Harte	5f6ddf8557	Avoid expressing the same thing at different clock rates.	2023-01-08 13:58:12 -05:00
Thomas Harte	72e0bfecc1	Edge towards clock-independent line composition.	2023-01-07 14:57:32 -05:00
Thomas Harte	cdf547ac82	Decline to provide synthetic text mode timing on the Mega Drive.	2023-01-07 14:37:06 -05:00
Thomas Harte	dd5b4b484a	Avoid double responsibility for state.	2023-01-07 14:34:33 -05:00
Thomas Harte	56831e02fc	Expand fixed timing constants.	2023-01-07 13:10:51 -05:00
Thomas Harte	5d2d3944ef	Make VRAM access delay a timing property.	2023-01-07 12:48:43 -05:00
Thomas Harte	f9e21df701	Avoid further hard-coded 342s.	2023-01-07 09:13:34 -05:00
Thomas Harte	bb436204f6	Merge branch 'VDPs' of github.com:TomHarte/CLK into VDPs	2023-01-07 09:10:50 -05:00
Thomas Harte	de45536b5c	Elucidate a magic constant, add an extra constexpr.	2023-01-07 09:10:41 -05:00
Thomas Harte	ebc1264c2c	Create a common home for timing information.	2023-01-06 22:39:46 -05:00
Thomas Harte	4875148617	Fill in Mega Drive numbers.	2023-01-05 14:22:51 -05:00
Thomas Harte	7a82b76911	Ensure visibility of memset.	2023-01-05 13:21:03 -05:00
Thomas Harte	27d37f71ec	Generalise and better factor bit reversal and TMS drawing.	2023-01-05 13:18:10 -05:00
Thomas Harte	c4a5a9763e	Minor indentation improvement.	2023-01-02 15:04:50 -05:00
Thomas Harte	a9f97ac871	Fix nothing-to-do test.	2023-01-02 15:04:08 -05:00
Thomas Harte	475440dc70	Update ClockConverter for potential alternative clocks.	2023-01-02 14:59:36 -05:00
Thomas Harte	dc3f8f5e42	These are the three fetchers to implement. ... They'll look fairly different from the TMS and SMS fetchers, I think, owing to the greater irregularity that comes with the smarter RAM accesses. I might need to play around for a while.	2023-01-01 22:44:06 -05:00
Thomas Harte	459ef39b08	constexpr the TMS palette.	2023-01-01 22:34:07 -05:00
Thomas Harte	27812fd0e2	Separate fetchers into their own header.	2023-01-01 22:26:50 -05:00
Thomas Harte	38eb4d36de	Better explain cumulative nature of @c to_internal.	2023-01-01 22:18:39 -05:00
Thomas Harte	2bd20a0cf8	Add further exposition.	2023-01-01 22:17:21 -05:00
Thomas Harte	da61909ec5	Explain the purpose here.	2023-01-01 21:20:30 -05:00
Thomas Harte	5729ece7bb	Incompletely transitions towards more flexible clock ratios.	2023-01-01 14:20:45 -05:00
Thomas Harte	151f60958e	Relocate the 9918 implementation file.	2023-01-01 14:01:19 -05:00
Thomas Harte	180045ada6	Convert vram_access_delay into a free-standing function.	2023-01-01 13:51:52 -05:00
Thomas Harte	11542e7a7f	Improve const correctness, simplify inheritance.	2023-01-01 13:49:11 -05:00
Thomas Harte	71598250ea	Improve commentary.	2023-01-01 13:41:51 -05:00
Thomas Harte	ffb0b2ce0b	Eliminate runtime duplication of personality.	2022-12-31 21:50:57 -05:00
Thomas Harte	b7c315058f	Also template Base.	2022-12-31 21:47:05 -05:00
Thomas Harte	7d6eac2895	Template the TMS on its personality. ... Template parameter currently unused, but preparatory to other improvements.	2022-12-31 15:08:33 -05:00
Thomas Harte	d79aac3081	Shuffle the personality enum into the 'public' header.	2022-12-31 15:01:11 -05:00
Thomas Harte	8d5547dc9e	Minor further style improvements. ... ... as I refamiliarise myself.	2022-12-29 22:09:14 -05:00
Thomas Harte	5d89293c92	Improve constness, primarily of reverse_table.	2022-12-29 11:29:19 -05:00
Thomas Harte	711f7b2d75	C++17 makes this a single step.	2022-12-27 22:50:12 -05:00
Thomas Harte	dca8c51384	Prefer to avoid a macro.	2022-12-27 22:36:27 -05:00
Thomas Harte	462b7dcbfa	Add Mega Drive VRAM size.	2022-12-27 22:28:43 -05:00
Thomas Harte	2ab4b351ca	Extend enum.	2022-12-27 22:20:47 -05:00
Thomas Harte	99ced5476f	Add quick clock-rate notes.	2022-12-26 22:56:45 -05:00
Thomas Harte	fea8fecf11	Continue DMA requests if writing, even after a phase mismatch.	2022-09-15 16:46:22 -04:00
Thomas Harte	beca7a01c2	Treat a phase mismatch as ending DMA.	2022-09-15 16:34:06 -04:00
Thomas Harte	2d8e260671	Take a shot at the phase mismatch IRQ.	2022-09-15 16:24:06 -04:00
Thomas Harte	04f5d29ed9	Improve logging, factor out phase_matches per TODO comment.	2022-09-15 16:14:14 -04:00
Thomas Harte	df29a50738	Attempt to support the DMA interface.	2022-08-31 15:33:48 -04:00
Thomas Harte	ea4bf5f31a	Provide card's SCSI ID.	2022-08-23 15:05:36 -04:00
Thomas Harte	8f2e94a1d8	Switch name back to emphasise _async_.	2022-07-16 14:41:04 -04:00
Thomas Harte	bf03bda314	Generalise AsyncTaskQueue, DeferringAsyncTaskQueue and AsyncUpdater into a single template.	2022-07-14 16:39:26 -04:00
Thomas Harte	55af6681af	Avoid unnecessary get_port_input calls.	2021-11-24 17:15:48 -05:00
Thomas Harte	2a7a42ff8f	Add header for assert.	2021-11-24 16:28:18 -05:00
Thomas Harte	0ad1529f3f	Retain delegate bit length for non-self-clocked data.	2021-11-24 16:15:27 -05:00