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Author	SHA1	Message	Date
Thomas Harte	c84004bfa3	Fixed: colour_cycle_numerator_ doesn't need to be multiplied by the time multiplier because it'll get that for free from the calculation of next_run_length.	2017-01-06 21:36:19 -05:00
Thomas Harte	c746a3711f	Temporarily disabled my attempt to be clever with bilinear filtering when applying a lowpass filter. Will need to investigate.	2017-01-04 08:06:18 -05:00
Thomas Harte	aa7774a9a6	Experimental: up the chroma accuracy, just let the luma go straight through. Subject to figuring out how I'm still losing so much precision.	2017-01-03 22:41:34 -05:00
Thomas Harte	a836120945	Restored proper colour separation, but somewhere a massive hit in horizontal resolution is happening — much greater than one would expect from the sample size picked. So investigation to come.	2017-01-03 22:32:07 -05:00
Thomas Harte	7d60df9075	Added the option for both intermediate and output shaders to use only a portion of the input/output texture; made an attempt to pick an appropriate proportion in order to align signal sampling with the colour subcarrier.	2017-01-03 22:16:52 -05:00
Thomas Harte	f2b8b26bc4	Started throwing some comments into my shaders.	2017-01-03 21:16:38 -05:00
Thomas Harte	9d60172571	Merge pull request #93 from TomHarte/ReadWriteTrack ... Implements the Type 3 WD177x commands	2017-01-01 21:01:56 -05:00
Thomas Harte	eca3995481	Added a CRC check for read address, ensured CRC, lost data and record not found are initially reset.	2017-01-01 21:00:25 -05:00
Thomas Harte	044c920a5b	Made it more explicit that there are no unhandled cases.	2017-01-01 20:56:52 -05:00
Thomas Harte	0df9ce5a76	Made an attempt at read address. So superficially that leaves only the force interrupts.	2017-01-01 20:55:09 -05:00
Thomas Harte	f94f34f053	Made an attempt at read track. Which means process_input_bit can't just swallow syncs any more; it now reports them as tokens of type ::Sync.	2017-01-01 20:39:19 -05:00
Thomas Harte	4ad2d2bedd	Merge branch 'master' into ReadWriteTrack	2017-01-01 20:04:22 -05:00
Thomas Harte	e28f72d919	Merge pull request #90 from TomHarte/TravisCI ... Introduces a shared Xcode scheme plus a first attempt at Travis CI integration	2017-01-01 20:03:26 -05:00
Thomas Harte	c994fa39f6	Ensured spin-up doesn't occur if there's no motor line.	2016-12-31 16:18:30 -05:00
Thomas Harte	1ea4f0d79d	Made an attempt to implement 'write track' and ensure that 'write sector' can't end without announcing that it has ended writing.	2016-12-31 16:01:44 -05:00
Thomas Harte	0689df1349	Merge pull request #92 from TomHarte/MFMCleanup ... Adds some documentation and tidies some of the new MFM infrastructure	2016-12-31 15:32:11 -05:00
Thomas Harte	b3c33d993a	Made an attempt to explain the requirements placed upon Disk subclasses that wish to support writing.	2016-12-31 15:30:48 -05:00
Thomas Harte	8eb21c6702	The "MFM...Byte"s aren't MFM-specific, they're relevant to both FM and MFM encoding. So renamed them. Also slimmed syntax within MFM.cpp mostly where emigration from the Acorn disk analyser had left a residue of lengthy namespace specification.	2016-12-31 15:25:11 -05:00
Thomas Harte	4c62487e6e	Merge pull request #91 from TomHarte/TableCRC ... Switches to a table-based implementation of CRC generation	2016-12-31 14:16:17 -05:00
Thomas Harte	a147d56ce6	Switched to a table-based implementation of CRC generation, adding construction cost to cheapen running cost.	2016-12-31 14:15:20 -05:00
Thomas Harte	7b696b0962	Switched scheme to shared.	2016-12-31 13:11:07 -05:00
Thomas Harte	57bb771fb7	It looks like spaces are automatically escaped (?)	2016-12-31 13:05:55 -05:00
Thomas Harte	5201a59c44	Attempted to introduce Travis CI.	2016-12-31 13:03:32 -05:00
Thomas Harte	df6e98fa52	Merge pull request #89 from TomHarte/OricDiskWrites ... Adds write support for the Oric .DSK file format	2016-12-31 12:53:43 -05:00
Thomas Harte	52b850a3f5	Quick extra: make sure parsed tracks don't overflow the 6400 byte space available in an MFM disk. Which might be better expressed as 6250?	2016-12-31 12:51:52 -05:00
Thomas Harte	cfbab1448c	Switched to a track parsing that disallows synchronisation values within sector contents.	2016-12-31 12:23:08 -05:00
Thomas Harte	12549ff412	Might as well get the file offset before entering the critical section; also moved the lock guard down more explicitly to group with the second set of actions.	2016-12-31 11:48:46 -05:00
Thomas Harte	6f0b5427e4	Made an attempt to avoid repetition of sync bytes.	2016-12-31 00:20:00 -05:00
Thomas Harte	0123b37213	Made an attempt to include sync values in the stream and properly to align.	2016-12-31 00:11:31 -05:00
Thomas Harte	ea4d85e1cd	The virtual disk constructed is the same across all tracks. So why not just request zero?	2016-12-31 00:10:35 -05:00
Thomas Harte	f217d508b8	Completed first attempt at write support for Oric disk images.	2016-12-30 23:12:46 -05:00
Thomas Harte	1f625fad66	Decided that if this is an [M]FM parsing function then it should be something more intelligent than a mere PLL record. Which I guess conveniently implies Oric DSK-esque behaviour. But properly defined, rather than very vaguely.	2016-12-30 23:10:52 -05:00
Thomas Harte	632b3c63b1	Added the infrastructure necessary for Oric disks to appear writeable to the machine and to receive changed tracks.	2016-12-30 22:51:48 -05:00
Thomas Harte	d581294479	Added get_track to get the PLL output for a complete track.	2016-12-30 19:59:23 -05:00
Thomas Harte	0f399b0a0c	Made type conversion explicit.	2016-12-30 19:59:01 -05:00
Thomas Harte	c6fcc40ac5	Merge pull request #88 from TomHarte/WDWrites ... Implements write support for the WD.	2016-12-30 18:11:00 -05:00
Thomas Harte	3b29e6a473	Ensured SSD and ADFs are grown if required.	2016-12-30 18:08:12 -05:00
Thomas Harte	07dacff42d	Added writing for Acorn ADF disks, plus appropriate TODOs in both similar bits of boilerplate.	2016-12-30 18:03:30 -05:00
Thomas Harte	c85450648f	Fix: make sure copies have proper event lengths. Also made it much clearer what's going on with the initial copy to the heap.	2016-12-30 17:55:46 -05:00
Thomas Harte	c740d9655a	Fixed: index_count_ may have been left high by a previous call; reset it just in case.	2016-12-30 17:55:06 -05:00
Thomas Harte	d09e7ac1e8	Made an attempt at reacting appropriately if the very first thing that looks like a sector doesn't pan out.	2016-12-30 17:44:35 -05:00
Thomas Harte	5d63556870	Periods need a custom copy constructor too, if they're going to avoid sharing an event_source.	2016-12-30 17:39:52 -05:00
Thomas Harte	e5cc77f22d	Added an extra sanity check.	2016-12-30 17:29:51 -05:00
Thomas Harte	81a3cbac45	Ensured a copy is passed for writing back rather than the original.	2016-12-30 17:26:44 -05:00
Thomas Harte	63ff5165a4	After a quick bit of reading, discovered the virtual copy constructor pattern really is only a convention in C++, and conformed to it. Which hopefully gives copyable tracks.	2016-12-30 17:25:39 -05:00
Thomas Harte	71dbd78cf2	If asynchronous background processing is to occur on tracks then, given that they inherently have state, they'll need to be copyable, and ideally 'cheaply' (though it's not too great a priority). So started implementing appropriate copy constructors. Also introduced an extra level of indirection to PCMSegmentEventSource so that it can copy itself without copying the underlying PCMSegment, which is 95% of the heft of a track in all currently-implemented cases.	2016-12-30 14:23:26 -05:00
Thomas Harte	f88f3c65e9	Removed duplicated newline.	2016-12-30 14:21:36 -05:00
Thomas Harte	82bb78fb2d	Ensured that get_sector copes even if any invalid sectors are encountered.	2016-12-30 14:21:14 -05:00
Thomas Harte	6fc692cd34	Attempted to switch to an asynchronous means for continuous file updates. Testing with SSD, as usual.	2016-12-29 22:15:58 -05:00
Thomas Harte	bbd94749f4	... and I guess an instant maximal simplification is also easy if length ends up being 0	2016-12-29 11:02:21 -05:00