105 Commits

Author	SHA1	Message	Date
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
Thomas Harte	debdad350d	Don't allow a disabled screen to interfere with Yamaha addressing.	2023-02-02 12:03:33 -05:00
Thomas Harte	0d4dc214fb	Merge branch 'MSX2' of github.com:TomHarte/CLK into MSX2	2023-02-02 11:38:45 -05:00
Thomas Harte	8f5c7fcabc	Merge branch 'MSX2' of github.com:TomHarte/CLK into MSX2	2023-02-01 22:25:12 -05:00
Thomas Harte	115acf835e	Vertical state is actually tristate.	2023-02-01 22:25:00 -05:00
Thomas Harte	c0fec8db15	Clean up macro.	2023-02-01 15:05:21 -05:00
Thomas Harte	f0e70f18fd	Fix seeding of output_pointer_.	2023-02-01 14:59:42 -05:00
Thomas Harte	9d2841bf6a	Reenable full ram pointer capture. Thanks @PatrickvL !	2023-02-01 14:55:33 -05:00
Thomas Harte	1264600bab	Shorten long lines.	2023-02-01 14:18:36 -05:00
Thomas Harte	002d27d9c2	Resolve various type conversion errors, and reduce duplication.	2023-02-01 14:17:49 -05:00
Thomas Harte	a315384e30	Provide context for byte-by-byte commands.	2023-01-31 21:29:55 -05:00
Thomas Harte	c5c722ae56	Generalise axis steps; begin HMMV.	2023-01-31 13:35:39 -05:00
Thomas Harte	872b9e5021	Predict Yamaha horizontal retrace interrupts.	2023-01-30 21:33:47 -05:00
Thomas Harte	492a170b20	Implement much of Yamaha line interrupts.	2023-01-30 21:24:53 -05:00
Thomas Harte	bc4c54800e	Type out just a little of status register 1.	2023-01-30 20:20:33 -05:00
Thomas Harte	8f20cb93e9	Note missed status accesses.	2023-01-29 21:20:50 -05:00
Thomas Harte	73e79b14ea	Use Yamaha palette pervasively.	2023-01-29 21:17:00 -05:00
Thomas Harte	3142f5c21d	Be overt about what replaces LineMode.	2023-01-29 21:04:15 -05:00
Thomas Harte	6d7f189ce7	Attempt the full panoply of logical pixel modes, across all graphics modes.	2023-01-29 18:28:49 -05:00
Thomas Harte	a91a5b8d07	Refer to actual field.	2023-01-29 18:02:09 -05:00
Thomas Harte	4cdcd3ac7d	Retain logical operation, take colour combination outside the loop.	2023-01-29 13:29:19 -05:00
Thomas Harte	0576451102	Be overt about colour direction.	2023-01-29 13:22:56 -05:00
Thomas Harte	1e646eb57b	Improve transfer flag for LMMC.	2023-01-28 21:45:05 -05:00
Thomas Harte	d3c446d91b	Take a shot at LMMC.	2023-01-28 21:30:45 -05:00
Thomas Harte	c6cda7c401	Switch to absolute placement of deferred events; properly serialise commands.	2023-01-28 11:55:12 -05:00
Thomas Harte	7e69e33ec2	Use paletted Yamaha border colour.	2023-01-27 22:42:02 -05:00
Thomas Harte	95e00dd958	Take slightly wrong-headed steps towards proper command timing.	2023-01-27 22:20:36 -05:00
Thomas Harte	8a673a697b	Further adapt internal terminology.	2023-01-27 12:30:09 -05:00
Thomas Harte	d42b6df570	Retain extra pattern name address bits.	2023-01-27 06:44:11 -05:00
Thomas Harte	81b00c6d97	Add notes.	2023-01-26 22:25:10 -05:00