93 Commits

Author	SHA1	Message	Date
Thomas Harte	a549fd1ecc	Introduced the ability simply to piggy-back off the CRT's natural phase for the colour burst, thereby eliminating a couple of redundant independent attempts in the Oric and Electron.	2016-12-10 13:42:34 -05:00
Thomas Harte	ebb62a2d78	Switched the 2600 to postfix and non-camel-case instance variable names.	2016-12-03 14:07:38 -05:00
Thomas Harte	b81c058c0a	Factored out the Atari 2600's 6532 connection, as a low-hanging fruit.	2016-12-03 13:41:55 -05:00
Thomas Harte	3361d6b93a	Factored out the Atari 2600 speaker and adjusted it to postfix underscores.	2016-12-03 13:39:46 -05:00
Thomas Harte	922dd6a586	Hit up the other two kinds of audio generator.	2016-10-07 17:10:00 -04:00
Thomas Harte	ee8510984f	Added just enough wiring to restore the 2600 to functionality.	2016-09-15 19:34:45 -04:00
Thomas Harte	d9016909ed	Added some wiring for PAL/NTSC mode switching on the Vic, making an attempt to simplify the whole loop of having different clock rates.	2016-08-14 13:33:20 -04:00
Thomas Harte	8db44eed3e	Added a default implementation of Speaker::skip_samples.	2016-07-04 20:48:27 -04:00
Thomas Harte	bfa237397d	Settled on assigning to nullptr as the appropriate style for emptying shared_ptrs; fixed the Vic properly to release its output resources.	2016-07-04 20:34:11 -04:00
Thomas Harte	88964ceac0	Eliminated plain pointer passing for object types.	2016-07-04 19:33:55 -04:00
Thomas Harte	0182b0483a	Added a 'power on' flag that is set automatically at construction but can be declined. Saves all that stuff of every machine having to set and then unset the RST line, and fixes an Electron bug related to that.	2016-06-29 19:13:24 -04:00
Thomas Harte	454e98302d	Slight rearrangement plus a setting of the CSMachine delegate corrects audio after a clock rate change.	2016-06-20 22:18:41 -04:00
Thomas Harte	31b26b8118	Made a first attempt to implement the full top-to-bottom change of clock rates, giving the Atari the ability to change rate when it switches to PAL mode, as it should always have been.	2016-06-20 21:47:27 -04:00
Thomas Harte	88e2b382e5	Made an attempt at a full and thorough 6532 implementation (and got a bit more explicit about flag size in the 6502).	2016-06-20 18:57:35 -04:00
Thomas Harte	065ec618c4	Factored out and templated the 6532, finally taking the opportunity to add a means to control the on-console switches of an Atari 2600.	2016-06-19 19:36:34 -04:00
Thomas Harte	65413f078c	Factored out the 6532, eventually to make it testable.	2016-06-19 18:57:40 -04:00
Thomas Harte	00a9f1bf24	Fixed best-effort updater actually to run, finally moved clock rate announcement into the C++ side of things, started working on a mechanism to allow clock rate to be updated.	2016-06-16 20:39:46 -04:00
Thomas Harte	12d1cac751	Merge branch 'master' into Vic-20	2016-06-10 18:23:55 -04:00
Thomas Harte	805e2d15c6	Fixed timing when clock is divided.	2016-06-10 18:20:16 -04:00
Thomas Harte	581eace478	Increased logging slightly, ensured all of colour RAM can be read, slightly improved the 2600 pixel decoder.	2016-06-07 22:01:14 -04:00
Thomas Harte	604862b20b	Fixed playfield/missile and playfield/ball collisions.	2016-06-02 22:36:52 -04:00
Thomas Harte	e3b95b8d2b	Back to asynchronous updates and drawing, to try to improve guarantees on audio latency; experimenting with whether other parts of the approach are fundamentally flawed; added a broad-phase for scheduled updates on the 2600.	2016-06-02 21:22:55 -04:00
Thomas Harte	11073daee1	Issues appear to be around timing generally. Working on it.	2016-06-02 20:15:48 -04:00
Thomas Harte	7aac306a12	Quick fix to the polynomials.	2016-06-02 19:56:02 -04:00
Thomas Harte	253e5a4203	With no regard to performance whatsoever, endeavoured to bring sound to the 2600. It's very scratchy, so something is wrong.	2016-06-02 19:50:16 -04:00
Thomas Harte	1e0fcbbee8	Made a very basic stab at a couple of the tone generators, added straight-through path for the speaker when input rate exactly equals output rate.	2016-06-01 19:53:16 -04:00
Thomas Harte	40c4544fb7	Got the basic sound pipeline pumping, just enough for static-level audio seemingly to work. Berzerk VE says "intruder alert, intruder alert", anyway.	2016-06-01 19:27:04 -04:00
Thomas Harte	8dc66167be	Made an attempt to consolidate the Objective-C++ side of things based on the incoming CRTMachine::Machine.	2016-05-31 22:16:20 -04:00
Thomas Harte	5c4f35e13f	Finally started on generalising the C++ stuff so as to be able to be able to get a working audio binding on the OS-specific side without further repetition by factoring an appropriate protocol out from the Electron and sketching out the correct speaker class for the Atari. Added a method to ask it what a good output frequency would be.	2016-05-31 21:23:44 -04:00
Thomas Harte	3fc80ea01f	Rethought, hopefully perfecting, sprite timing.	2016-05-30 19:56:36 -04:00
Thomas Harte	8b342f77a9	Made an attempt further to rationalise timing.	2016-05-27 21:51:27 -04:00
Thomas Harte	91d3453cc1	Switched to looking backwards rather than forwards.	2016-05-27 14:33:08 -04:00
Thomas Harte	106ddae907	Sprites are still a pixel off but better; made some attempt to move things outside of the loop.	2016-05-25 21:43:19 -04:00
Thomas Harte	40c2c0bd2d	Minor simplifications and improvements. Still trying to figure out what's causing the non-linear edge addressing.	2016-05-25 21:12:25 -04:00
Thomas Harte	b01b474e36	I'm back to thinking that resets are deferred but pixel counts are live.	2016-05-25 07:32:25 -04:00
Thomas Harte	758806f924	Introduced a separate queue for pixels, which may or may not be correct.	2016-05-24 21:39:57 -04:00
Thomas Harte	0b081831a9	Set up a pipeline for all pixels that attempts to allow for appropriate delays.	2016-05-24 07:58:26 -04:00
Thomas Harte	5c1e594937	Realised there's a clocking delay on starting horizontal move. Which fixes Coke Zero.	2016-05-22 21:45:40 -04:00
Thomas Harte	c3e719c4ab	Added missile-to-player offsetting. Completing the list of graphics-related TODOs.	2016-05-22 17:01:56 -04:00
Thomas Harte	4c6d4d899d	Ensured that resetting the horizontal timer affects phase.	2016-05-22 16:29:53 -04:00
Thomas Harte	df93d7849d	Re-enabled the ball.	2016-05-22 14:38:14 -04:00
Thomas Harte	0242924fb4	Various bits of caveman debugging appearing and disappearing, switched to latching ball behaviour.	2016-05-22 14:26:02 -04:00
Thomas Harte	5e220562e4	Actually, the four-clock delay, with palette taking effect immediately, appears to be correct. So back to the drawing board on that.	2016-05-21 21:44:54 -04:00
Thomas Harte	4eded9b9d0	Re-enabled collisions.	2016-05-21 13:05:36 -04:00
Thomas Harte	b1c84f5402	Counters run every scan line regardless of blank and sync. Also played further with timing.	2016-05-21 12:54:39 -04:00
Thomas Harte	470c90428a	Switched to two-register implementation of VDELP, etc.	2016-05-21 10:26:27 -04:00
Thomas Harte	36d19cb6cf	Made an attempt at properly pumping timers during hmove.	2016-05-21 10:18:15 -04:00
Thomas Harte	a952813036	Fixed missile sizes, played about with ball placement.	2016-05-19 18:30:17 -04:00
Thomas Harte	cf5b8ab92e	This is now approximately back to where it was on Cosmic Ark.	2016-05-19 08:30:10 -04:00
Thomas Harte	40600b4bcb	Made sprite placement consistent at least. Not necessarily yet correct.	2016-05-18 22:07:24 -04:00