197 Commits

Author	SHA1	Message	Date
Thomas Harte	bcc959d938	Sprites: deconflate vertical and modification flags; disarm on CTL not POS.	2021-11-19 08:03:10 -05:00
Thomas Harte	cf25d8a378	Increase logging (but leave it disabled).	2021-11-19 08:01:23 -05:00
Thomas Harte	693d46f8ea	Mask by index, not colour.	2021-11-18 05:36:38 -05:00
Thomas Harte	3496ebd1d7	Constrain sprite fetches to Chip RAM.	2021-11-17 17:49:42 -05:00
Thomas Harte	be763cf7fe	Expose joystick to the world.	2021-11-17 15:33:46 -05:00
Thomas Harte	c3b4bee210	Adds a joystick class.	2021-11-17 14:26:51 -05:00
Thomas Harte	6df0227ab1	Hacks in a basic effort at dual playfields.	2021-11-16 18:26:27 -05:00
Thomas Harte	2a3a7fa8a0	Reset will_request_interrupt.	2021-11-15 16:00:35 -05:00
Thomas Harte	50a6496399	Avoids over-greedy DMA.	2021-11-15 12:31:15 -05:00
Thomas Harte	c99dee86dd	Adds missing low -> high actions, implements more transitions.	2021-11-15 12:29:32 -05:00
Thomas Harte	0c5bb9626b	Separates state transitions and tests.	2021-11-15 05:29:28 -05:00
Thomas Harte	a9971917f5	Attempts a translation of Commodore's documentation.	2021-11-14 14:54:33 -05:00
Thomas Harte	4c62611da3	Adds enough state machine to get into the near-incomprehensible stuff on the right.	2021-11-14 10:48:50 -05:00
Thomas Harte	47f36f08fb	Switches to a synchronous audio state machine; renames advance -> advance_dma. ... I can worry about how to just-in-time things once I better understand the hardware in general.	2021-11-13 15:53:41 -05:00
Thomas Harte	f906bab1a5	Provides feedback on interrupt flags, starts on state machine.	2021-11-13 11:05:39 -05:00
Thomas Harte	fffc03c4e4	Propagates time to the audio subsystem.	2021-11-12 15:30:52 -05:00
Thomas Harte	0a94184d6b	Provides a greater wealth of audio data.	2021-11-11 09:24:15 -05:00
Thomas Harte	7be3578497	Adds a target for audio writes.	2021-11-09 07:11:23 -05:00
Thomas Harte	eeaccb8ac0	Implements clear_all_keys.	2021-11-08 17:49:09 -05:00
Thomas Harte	8ef9a932aa	Adds inclusive fill test; fixes inclusive fills.	2021-11-07 14:26:13 -08:00
Thomas Harte	31e22e4cfb	Provides full serial input.	2021-11-07 05:19:16 -08:00
Thomas Harte	ecfe68d70f	Introduce the principle that a Serial::Line can be two-wire — clock + data.	2021-11-06 16:54:20 -07:00
Thomas Harte	c0c2b5e3a9	Post key actions to the nominated serial line. ... Albeit that I'm still thinking through whether I want the option of including a clock on Serial::Line. It'd be natural in one sense — there's already one built in — but might weaken Serial::Line's claim to be a one-stop shop for both enqueued and real-time connections without a reasonable bit of extra work.	2021-11-06 12:03:09 -07:00
Thomas Harte	471e13efbc	Transcribes keycodes.	2021-11-04 18:54:42 -07:00
Thomas Harte	c9bf2dda16	Attempt implementation of disk sync.	2021-11-02 18:18:59 -07:00
Thomas Harte	3ceb378b9b	Relocate disk logic into a separate compilation unit.	2021-11-02 17:35:23 -07:00
Thomas Harte	1cf1c90511	Adds support for interlaced output.	2021-11-02 14:34:03 -07:00
Thomas Harte	d989825216	Add bonus notes on VPOSR.	2021-11-02 03:47:39 -07:00
Thomas Harte	3976420b88	Retains a little more of output controls.	2021-11-01 17:15:36 -07:00
Thomas Harte	2f1ce5fe43	Switch to using the swizzled palette for playfield output.	2021-11-01 14:44:30 -07:00
Thomas Harte	42145a5b8a	Delay bitplane installation until end of slot.	2021-11-01 14:18:58 -07:00
Thomas Harte	4e66017205	Enable sprite reuse and toggle to inactive when visible region is over.	2021-10-31 16:52:48 -07:00
Thomas Harte	299d517449	Performs a first implementation of fill mode.	2021-10-31 14:36:31 -07:00
Thomas Harte	4c1ab6ff25	Rethinks bitplane stops.	2021-10-31 09:01:38 -07:00
Thomas Harte	16f31cab6a	Avoid duplication of CIA select test.	2021-10-30 12:05:18 -07:00
Thomas Harte	02c88e6826	VHPOSR's fields are the other way around.	2021-10-30 12:04:46 -07:00
Thomas Harte	d25804f4a2	Throws in official register names.	2021-10-29 14:05:11 -07:00
Thomas Harte	edb75e69cb	Implement bitplane modulos.	2021-10-29 11:29:22 -07:00
Thomas Harte	f3e895f17c	Tag intended unused parameters.	2021-10-29 06:21:02 -07:00
Thomas Harte	b952d73e83	Disallow programmatic setting of blitter status.	2021-10-29 06:19:57 -07:00
Thomas Harte	07facc0636	Takes a stab at BZERO.	2021-10-28 18:12:46 -07:00
Thomas Harte	da1a69be27	Caps mouse speed. ... Also takes another guess at CIA interrupt bits. To no avail.	2021-10-27 18:38:02 -07:00
Thomas Harte	b10f5ab110	Apply A mask when loading into barrel shifter.	2021-10-26 20:02:28 -07:00
Thomas Harte	b4286bb42b	Modulos are subtracted in descending mode.	2021-10-26 07:21:51 -07:00
Thomas Harte	139d35c6f9	Switches to basic use of sprite shifters.	2021-10-25 20:58:48 -07:00
Thomas Harte	cb24457b4a	Starts on a two-at-a-time sprite shifter.	2021-10-25 16:30:30 -07:00
Thomas Harte	9f3efb7f05	Limits graphical output to [all but one bit] of the display window.	2021-10-25 14:12:23 -07:00
Thomas Harte	e6001e0f22	Shifts bitplanes irrespective of output window.	2021-10-25 13:59:39 -07:00
Thomas Harte	c6535bf035	Switches bitplane shifter to returning four high-res pixels at a time.	2021-10-25 13:34:36 -07:00
Thomas Harte	7118a515e0	Reduce logging in trustworthy areas.	2021-10-23 20:36:41 -07:00