146 Commits

Author	SHA1	Message	Date
Thomas Harte	fbfa26ad5e	Minor steps towards implementing Line.	2023-01-26 12:55:08 -05:00
Thomas Harte	b12fd00145	Generate an appropriate instance for line drawing.	2023-01-26 12:09:06 -05:00
Thomas Harte	0c8815d6a0	Retain command-engine context.	2023-01-26 11:59:27 -05:00
Thomas Harte	700470915a	Add pixel serialisation for Yamaha graphics mode 5.	2023-01-24 23:07:29 -05:00
Thomas Harte	f8b42d4107	While being lazy with types, implement 4/5/6/7 fetching.	2023-01-24 13:15:00 -05:00
Thomas Harte	63bd0f918d	Be overt about buffer target and vertical position.	2023-01-24 12:46:09 -05:00
Thomas Harte	445b34933a	Edge further towards actual fetching.	2023-01-23 23:19:04 -05:00
Thomas Harte	bbd8b011ba	Remove temporarily-faulty check.	2023-01-23 22:52:03 -05:00
Thomas Harte	15fbf4cb7f	Ensure Yamaha-style refresh is used in all modes.	2023-01-23 22:39:34 -05:00
Thomas Harte	7293f9dc10	Remove extraneous brackets, add comment to self.	2023-01-23 22:25:56 -05:00
Thomas Harte	8567c934b1	Ensure Yamaha refresh program is used.	2023-01-22 22:11:01 -05:00
Thomas Harte	2744a9b6b0	Tidy up.	2023-01-22 22:02:39 -05:00
Thomas Harte	91047e5b3a	Start attempting to use table-based Yamaha fetch.	2023-01-22 22:00:28 -05:00
Thomas Harte	c6dd7d4726	Transcribe no-sprite event list.	2023-01-22 20:19:21 -05:00
Thomas Harte	b7d80f5ed1	Copy in some notes, expand line buffer.	2023-01-21 23:04:48 -05:00
Thomas Harte	a5765abbad	Route into the Yamaha fetcher. ... Albeit that it doesn't yet fetch.	2023-01-21 22:47:16 -05:00
Thomas Harte	696ec12516	Add address rotation for applicable modes.	2023-01-21 22:33:26 -05:00
Thomas Harte	c9734df65c	Implement extended colour, sprite and RAM pointers.	2023-01-21 20:45:23 -05:00
Thomas Harte	13e490e7d7	Log selected screen mode.	2023-01-21 14:48:55 -05:00
Thomas Harte	cefcc1d443	Expand Yamaha graphics mode recognition.	2023-01-21 14:35:26 -05:00
Thomas Harte	d1f929e6f7	Just do a multiply and divide. Easy.	2023-01-21 14:19:52 -05:00
Thomas Harte	e289e6e757	Catch and map Yamaha palette entries. ... It's one less thing in the uncaptured log.	2023-01-21 14:12:46 -05:00
Thomas Harte	a726c9d97a	Enable indirect register writes.	2023-01-20 23:14:57 -05:00
Thomas Harte	c77e7c268f	1 = disable, 0 = enable.	2023-01-20 23:08:41 -05:00
Thomas Harte	9c57bfd58d	Attempt to log dropped indirect writes.	2023-01-20 23:07:14 -05:00
Thomas Harte	4efda108c6	Transcribe the Yamaha 9938 register meanings.	2023-01-20 23:00:33 -05:00
Thomas Harte	191cf4829b	Attempt real blank reporting.	2023-01-20 22:29:49 -05:00
Thomas Harte	9b7a925816	Give clearer names to the two pointers.	2023-01-20 20:29:15 -05:00
Thomas Harte	392b0acb58	Pull everything out of master_system_ struct. ... Now that it's inherently collected in the relevant `Storage`.	2023-01-19 15:09:16 -05:00
Thomas Harte	4b7606894e	Move Master System state, and start simplifying.	2023-01-19 14:09:31 -05:00
Thomas Harte	1fb94d15ab	No need for this-> ugliness in Base methods.	2023-01-19 12:32:42 -05:00
Thomas Harte	348c42bdea	Start trying to bluff my way through extended status.	2023-01-18 22:23:19 -05:00
Thomas Harte	e450e53c4e	Temporarily copy and paste my way to further logging.	2023-01-18 14:59:30 -05:00
Thomas Harte	355ee7fbc7	Adjust factoring of read and write per expanded V9938 scope.	2023-01-18 12:36:57 -05:00
Thomas Harte	4d96122884	Eliminate hard-coded assumption of 16kb. ... Clearly I'll have to do something else to support 128k+, probably move the ram pointer?	2023-01-10 12:38:19 -05:00
Thomas Harte	f1f16d1f9a	Clarify and simplify half_cycles_before_internal_cycles.	2023-01-09 22:55:46 -05:00
Thomas Harte	fd14829992	Avoid hand-writing all the various conversions.	2023-01-09 22:34:56 -05:00
Thomas Harte	c0fe88a5bb	Apply clock conversion to existing usages of do_external_slot.	2023-01-09 13:54:49 -05:00
Thomas Harte	4d9d684618	Add TODO on dangling hard-coded conversion.	2023-01-08 21:44:25 -05:00
Thomas Harte	a0a835cf10	Export memory size into traits.	2023-01-08 21:37:20 -05:00
Thomas Harte	ef67205ce8	Set pixel count per mode.	2023-01-08 21:31:00 -05:00
Thomas Harte	794adf470b	Break assumption that cycles = pixels; fix pixel clocking.	2023-01-08 21:25:22 -05:00
Thomas Harte	8cc20844a9	Clock convert for draw_ calls.	2023-01-08 17:31:08 -05:00
Thomas Harte	b522d65c50	Fix border lengths.	2023-01-08 17:04:19 -05:00
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