465 Commits

Author	SHA1	Message	Date
Thomas Harte	48737a32a7	Introduces formal setting of the output volume to SampleSource. ... Previously every output device was making its own decision. Which is increasingly less sustainable due to the CompoundSource.	2018-03-09 13:23:18 -05:00
Thomas Harte	705d53cc21	Picks a phase for the TMS empirically.	2018-03-03 13:53:00 -05:00
Thomas Harte	3c5a8d9ff3	Adds Super Game Module support for the ColecoVision.	2018-03-03 13:08:33 -05:00
Thomas Harte	ea13c7dd32	Implements multicolour mode on the TMS.	2018-03-02 23:08:01 -05:00
Thomas Harte	86239469e7	Allows SN76489 consumers to apply an additional divider that reduces computation.	2018-03-01 18:51:05 -05:00
Thomas Harte	7890506b16	Gives the SN76489 its proper dividers and personalities.	2018-02-28 22:36:03 -05:00
Thomas Harte	5b854d51e7	Corrects out-of-bounds access.	2018-02-27 22:45:45 -05:00
Thomas Harte	d4df101ab6	Makes a first attempt at implementing the SN76489.	2018-02-27 22:25:12 -05:00
Thomas Harte	0ad2676640	Adds a class for the SN76489 and wires it into the ColecoVision.	2018-02-26 22:04:34 -05:00
Thomas Harte	cabad6fc05	Optimises the inner TMS loops slightly.	2018-02-21 21:29:17 -05:00
Thomas Harte	2fe0ceb52a	Sets TMS input gamma.	2018-01-13 22:19:41 -05:00
Thomas Harte	2f59226300	Fixes: DiskROM drive motor control, track_for_sectors' sides.	2018-01-07 20:02:40 -05:00
Thomas Harte	793ef68206	Implements unconditional force interrupt for the WD.	2018-01-07 19:42:38 -05:00
Thomas Harte	2ffde4c3c2	Corrects SCC volume errors. ... Which were leading to substantial overflow.	2018-01-07 09:59:00 -05:00
Thomas Harte	57ddfcd645	Corrects AY counter type.	2018-01-06 23:16:01 -05:00
Thomas Harte	fc16e8eb8c	Makes first attempt at actually implementing the SCC.	2018-01-06 23:15:42 -05:00
Thomas Harte	655b971976	Establishes that there is such as a thing as a Konami SCC. ... Creates one, ensures it appears in memory when intended to, lets it handle reads and writes. It currently does nothing.	2018-01-06 20:15:55 -05:00
Thomas Harte	bcc7ad0c30	Corrects bad TMS sprite selections on the top row of the screen.	2018-01-06 16:26:11 -05:00
Thomas Harte	2dc1d4443e	Separates LowpassFilter and SampleSource.	2017-12-18 21:39:23 -05:00
Thomas Harte	f8a2459c91	Corrects two lingering adaptation errors in the Vic-20.	2017-12-17 21:43:08 -05:00
Thomas Harte	ac80d10cd8	Separates the component parts of running an audio stream: task deferral, filtering and generation. ... Walking towards improving opportunities for composition.	2017-12-17 21:26:06 -05:00
Thomas Harte	ec4c259695	Removes unused file.	2017-12-14 21:19:09 -05:00
Thomas Harte	ad50b6b1fb	Corrects TMS' get_time_until_interrupt when the next interrupt is exactly a frame away.	2017-12-14 21:12:51 -05:00
Thomas Harte	3da323c657	Corrects lingering free TMS read.	2017-12-14 20:30:56 -05:00
Thomas Harte	aca7842ca4	Better documents and tidies the TMS9918.	2017-12-14 20:27:26 -05:00
Thomas Harte	c36de4f640	Attempts real VRAM access timings, correcting a frame timing error as I go.	2017-12-13 22:37:27 -05:00
Thomas Harte	5d0c33d545	Corrects occasional TMS sprite glitching.	2017-12-12 22:19:33 -05:00
Thomas Harte	b0616ee10c	Adds one-before-the-graphics as a line for video collection. ... Thereby corrects sprites on line 0.	2017-12-12 21:35:33 -05:00
Thomas Harte	798cdba979	8255: update_outputs now affects only those ports designated as outputs.	2017-12-10 17:55:37 -05:00
Thomas Harte	f957344ac4	Corrects TMS failure to show background through tile layer.	2017-12-09 23:15:04 -05:00
Thomas Harte	b3fbd0f352	Tidies up some of the TMS' magic constants.	2017-12-09 23:08:07 -05:00
Thomas Harte	042edc72f7	Adjusts TMS declared timing so as to be in-phase with an NTSC clock, and adopts an alternative palette.	2017-12-09 22:28:34 -05:00
Thomas Harte	943418c434	Reformulates TMS sprite plotting to set the collision flag and to support magnified sprites.	2017-12-09 20:30:12 -05:00
Thomas Harte	7d7e2538bd	Introduces a computationally simplified inner loop for TMS graphics modes, modelled on that for text.	2017-12-09 16:02:33 -05:00
Thomas Harte	7a544731e2	Makes minor tidiness improvements to the TMS.	2017-12-08 22:20:21 -05:00
Thomas Harte	e1914b4f16	Attempts to add a proper intermediate buffer for sprites to allow the split of collection and output.	2017-12-08 22:12:39 -05:00
Thomas Harte	8653eb8b55	Corrects various latent errors in optimised TMS video collection.	2017-12-06 20:24:29 -05:00
Thomas Harte	a4f0a260fd	Reformulates the TMS graphics mode fetch loop to try to eliminate heavy conditionality. Temporarily introduces some sprite selection issues.	2017-12-05 22:39:03 -05:00
Thomas Harte	d4a53e82bb	Replaces manual retread of memcpy with standard memcpy.	2017-12-05 18:21:34 -05:00
Thomas Harte	6eedc99286	Makes substantial optimisations to text mode. ... Character optimisations to come.	2017-12-04 22:18:51 -05:00
Thomas Harte	a473338abe	Makes minor type conversion fixes.	2017-12-03 22:24:48 -05:00
Thomas Harte	ad3df36c20	Corrects sprite information collection to cover all four.	2017-12-03 14:51:55 -05:00
Thomas Harte	38b11893e8	Takes first steps towards sprite display on the TMS.	2017-12-02 22:13:43 -05:00
Thomas Harte	e4534775b0	Cleans up and zooms in on the TMS slightly.	2017-12-02 17:48:31 -05:00
Thomas Harte	fe0cdc8d69	Corrects colour fetching in TMS Graphics II to be a function of row.	2017-12-02 16:10:29 -05:00
Thomas Harte	ca26ce8400	Slightly corrects style errors in the Cartridge hierarchy, and introduces mapping of .ROM to the MSX when appropriate.	2017-12-02 16:01:30 -05:00
Thomas Harte	d3dd8f3f2a	Implements screen 2 addressing.	2017-12-02 14:05:52 -05:00
Thomas Harte	3c8d2d579d	Resolves remaining sources of text mode instability.	2017-11-30 22:48:07 -05:00
Thomas Harte	edcbb3dfed	Tidies code a little and thereby uncovers and corrects one cause of output instability.	2017-11-30 22:19:53 -05:00
Thomas Harte	9c8158753e	Makes a first attempt at displaying text mode.	2017-11-30 21:35:26 -05:00