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Author	SHA1	Message	Date
Thomas Harte	4554abb755	Made an attempt to be more rigorous in display generation on the Electron, to make sure I deal with mid-line changes to/from blank line mode. Even if it turns out that they generate pixels.	2016-01-29 21:14:13 -05:00
Thomas Harte	adc6838ba0	Continued slow migration of shader ownership to CRT. Attempted to start debugging the tape interface.	2016-01-27 21:35:57 -05:00
Thomas Harte	96c946b8af	Made a very basic attempt to emulate tape output.	2016-01-24 18:20:55 -05:00
Thomas Harte	1819e7b9cc	Started sketching out an appropriate interface to transfer responsibility for shaders to the CRT.	2016-01-23 19:06:32 -05:00
Thomas Harte	ace331d4b4	Got a bit higher level in CRT timing specification. Which internally allows it now to infer the colour clock frequency. Which will be helpful momentarily.	2016-01-23 18:53:20 -05:00
Thomas Harte	a9e26d7808	Introduced a scan's delay, as intended.	2016-01-23 17:49:25 -05:00
Thomas Harte	cd97617a8a	Bumped the speaker up to the full namespace, since Tape lives there to avoid delegation complexity. Turned the CRT into something the Electron statically owns, fixing a memory leak by simplifying.	2016-01-23 17:45:06 -05:00
Thomas Harte	20cab08f8f	Added a two-slot buffer of scans and a comon dispatch mechanism.	2016-01-23 17:44:34 -05:00
Thomas Harte	f4cd0aa38e	Ensured that all relevant information is given to the tape class. Made an attempt not to write to a screen output buffer if we don't have one. Added some debug printing.	2016-01-23 13:09:56 -05:00
Thomas Harte	949c33774a	Fixed failure to set a delegate, slowed tape speed if operating in RAM.	2016-01-23 11:42:14 -05:00
Thomas Harte	43a7d1b7ae	It'll be helpful to be able to isolate the tape interface when I'm faking a fast load. So factored out.	2016-01-23 00:14:44 -05:00
Thomas Harte	0efe4b312c	Disabled my various bits of rate interchange debugging; improved test for when to call update_display due to a RAM write.	2016-01-21 22:16:52 -05:00
Thomas Harte	82cb1c365c	Further simplified inner loops.	2016-01-21 21:35:04 -05:00
Thomas Harte	34640cec93	Started trying to move some logic out of the inner loop.	2016-01-21 21:28:09 -05:00
Thomas Harte	48ddd3c497	Set about documenting the CRT; while doing so decided to add an optional clock divider for input; having done so decided to try to exploit it with the Electron.	2016-01-21 21:17:47 -05:00
Thomas Harte	baef1ccd57	Made the constructor protected, to emphasise that this class isn't for instantiation. Also added extra comments aplenty.	2016-01-21 08:39:34 -05:00
Thomas Harte	9fa35dd559	Killed some whitespace lines.	2016-01-20 21:58:34 -05:00
Thomas Harte	de7218cdf0	Added a lot of commenting to the CPU6502 definition, simplifying its construction. Added missing nullability modifier to CSElectron. Fixed bad-habit Objective-C style naming on the Electron's Interrupt enum.	2016-01-20 21:55:38 -05:00
Thomas Harte	4c16d34063	Moved set_tape so that the inline definition of get_next_tape_pulse is visible to it. Also eliminated some dead typedefs.	2016-01-20 08:27:25 -05:00
Thomas Harte	f727582911	Started making first moves towards stripping CSCathodeRayView of its responsibilities. If that can be merely an OpenGL view that presents things, things will be a lot more portable.	2016-01-20 08:21:33 -05:00
Thomas Harte	280a2292ff	Shushed.	2016-01-19 23:33:15 -05:00
Thomas Harte	9036cf3b7c	Thus did the first UEF load.	2016-01-19 23:03:27 -05:00
Thomas Harte	e65cd4cf06	Some data is marginally reaching the CPU from the tape.	2016-01-19 22:05:34 -05:00
Thomas Harte	832797182f	Update TapeUEF.cpp ... Corrected chunk for which _tone_length is used, definition of a carrier tone chunk.	2016-01-19 18:59:10 -05:00
Thomas Harte	956b90e203	Attempted further to improve latency; added view adjustment for non-4:3 output aspect ratios. The 4:3 is currently hardcoded, so further work will be required.	2016-01-18 23:55:52 -05:00
Thomas Harte	90eef1df74	Tightened to provide lower latency audio, hopefully.	2016-01-18 20:01:06 -06:00
Thomas Harte	03f683d588	Gave the audio queue something a lot like a spin lock on waiting to pipe out audio.	2016-01-18 19:57:18 -06:00
Thomas Harte	127684c590	With silence and high tone implemented, this may well hit a large proportion of existing files.	2016-01-18 19:45:14 -06:00
Thomas Harte	7d6214e078	This likely gets chunks 0100 and 0102 correct.	2016-01-18 19:37:36 -06:00
Thomas Harte	5a39e42413	Wired up enough such that some basic attempt at parsing a UEF occurs.`	2016-01-18 17:06:09 -06:00
Thomas Harte	2779f0e569	Statred working on support for at least the most fundamental file format.	2016-01-18 15:46:41 -06:00
Thomas Harte	b70fdc2de8	Switched to being explicitly careful about not wrapping around and stomping on data not yet output.	2016-01-18 13:56:20 -06:00
Thomas Harte	ddcc34740b	Added lots of debugging output while I attempt to locate the source of audio scratchiness, also simplified manner of dealing with wraparound within the AudioQueue wrapper.	2016-01-18 13:50:19 -06:00
Thomas Harte	b58e59e2bb	Fixed: now outputting the requested output rate, rather than massively overproducing at the input rate.	2016-01-14 23:12:40 -05:00
Thomas Harte	e63b6d22ae	As shown by the commented-out code, the aliasing-adaptation seems to be working. So something is wrong somewhere else.	2016-01-14 21:59:37 -05:00
Thomas Harte	383b2be4c6	Fixed one off-by-one error.	2016-01-14 21:33:27 -05:00
Thomas Harte	8bd04a6be4	Switched model for filter subclasses. Implemented test square[-ish] wave to check for obvious stream errors. None is clear.	2016-01-14 21:27:02 -05:00
Thomas Harte	781249acf7	Fixed crash.	2016-01-14 20:35:36 -05:00
Thomas Harte	38ffcaa262	Here, at last, is _some_ audio output, at least.	2016-01-14 20:33:22 -05:00
Thomas Harte	afde8dac49	Closed the loop such that audio manages to bubble up into Objective-C.	2016-01-13 22:38:59 -05:00
Thomas Harte	439d452e23	Resolved some errors.	2016-01-13 22:11:33 -05:00
Thomas Harte	49e89a4bcb	I'm not yet completely convinced by my approach to time basing, but it'll probably do? If so then this more or less gets me ready for a point-sampled filtering.	2016-01-13 22:02:39 -05:00
Thomas Harte	d9a7ef9e46	Edging towards audio output; the speaker is given appropriate input and output rates, and then updated with current divider and enabled/disabled status.	2016-01-13 21:03:43 -05:00
Thomas Harte	d28abdc037	Made an attempt at correct timing, adding support for additional paged ROMs, added file association for .rom.	2016-01-12 22:34:26 -05:00
Thomas Harte	84ba4e2900	Tidied a little, started working towards supporting speaker output.	2016-01-12 22:19:56 -05:00
Thomas Harte	3437781abd	Started sketching out an interface for sound generation. Which made me realise that the CRT in CRTDelegate was redundant, since C++ has namespaces.	2016-01-12 16:54:09 -05:00
Thomas Harte	6112f4ef6b	Withdrew soft filtering for now; until the sampling frequency is passed on it's not sufficiently rigorous.	2016-01-12 16:42:16 -05:00
Thomas Harte	75d6ec354b	Added some very basic filtering in RGB mode.	2016-01-12 16:27:09 -05:00
Thomas Harte	49a36ec9ac	Added F12 as break.	2016-01-11 22:35:52 -05:00
Thomas Harte	cba09b5490	Switched display update and RAM write order.	2016-01-11 22:29:16 -05:00