284 Commits

Author	SHA1	Message	Date
Thomas Harte	bcb7c27cc4	Given that I'm not racing this any more, turned the intended 1 second back into 1 second.	2017-07-08 19:21:33 -04:00
Thomas Harte	2f42874fd3	Another fix to deal with real-time fighting: allow 8 and 18 pulses to be recognised as 1s and 0s. That's because the hand-off from ROM routines to parsing may occur very shortly before the first pulse of a valid sequence, making it look like there's a ghost. A cleaner solution needs to be found, probably revolving around allowing parsers to be attached to tapes and therefore to run constantly.	2017-07-06 22:33:03 -04:00
Thomas Harte	84d0e9b4cd	Accept a pulse that begins exactly on seek_time as being found while seeking.	2017-07-06 22:31:45 -04:00
Thomas Harte	a53011f778	Extended intro and outro length because right now I'm racing this myself. Can return to normal once tape motor control is implemented.	2017-07-06 22:31:12 -04:00
Thomas Harte	919fc48cc5	Fixed dumb out-of-bounds access error.	2017-06-22 22:28:50 -04:00
Thomas Harte	87ee8450fe	Minor rejig: it's much more likely that something that can't be distinguished is a ZX81 program. TODO: some sort of BASIC token parsing, to be more confident.	2017-06-22 20:23:14 -04:00
Thomas Harte	52d9ddf9e5	Gave the binary tape player a more logical assignment of wave level to output level. Which miraculously appears to have been the issue with the ZX80/81 tape loading — the inconsistency of silences seems to have been the issue.	2017-06-21 22:13:24 -04:00
Thomas Harte	e6e6e4e62b	Adds an extra character for padding the ZX81 table.	2017-06-12 22:08:11 -04:00
Thomas Harte	626737b9fa	Started mucking about with some string conversion routines. Not finished yet.	2017-06-12 21:32:36 -04:00
Thomas Harte	22de481557	Made an attempt to get .p/.80 checked and as far as the emulated machine.	2017-06-12 19:41:59 -04:00
Thomas Harte	77aa3c187e	Rebranded ZX80O as ZX80O81P, with an eye to making it accept ZX81 .p files. Adjusted the initial selection part of the static analyser appropriately.	2017-06-11 21:38:32 -04:00
Thomas Harte	ee0283c985	Modified to use an in-memory buffer for file contents.	2017-06-11 21:35:09 -04:00
Thomas Harte	2c6414ce11	Adjusted to allow inspect_waves to swallow a gap before a bit if necessary, increasing the opportunities for its call.	2017-06-11 18:31:09 -04:00
Thomas Harte	e5aea632ee	Updated curly bracket placement.	2017-06-11 17:29:22 -04:00
Thomas Harte	c2bc9a8c62	Ensured no namespace collision in double-include guards.	2017-06-11 16:41:15 -04:00
Thomas Harte	256ba4028b	Rejigged to eliminate semi-duplication of the is-a-file test.	2017-06-08 21:52:13 -04:00
Thomas Harte	b07af2660d	Adjusted to make sure that the very end of a tape is properly measured.	2017-06-08 21:33:35 -04:00
Thomas Harte	bc0d70b2f7	Added: a shout-out when the tape has been exhausted.	2017-06-08 21:32:27 -04:00
Thomas Harte	c6e48dfd56	Given that a final gap is semantically part of describing tape contents, ensured one formally appears before declaring that the tape has ended.	2017-06-08 21:31:54 -04:00
Thomas Harte	c775db50ef	Ensured no out-of-bounds accesses.	2017-06-08 21:31:03 -04:00
Thomas Harte	ee4c8b5ad2	Ensured final byte plays out.	2017-06-08 19:51:49 -04:00
Thomas Harte	d8b76e31c3	Added and improved the is-this-ZX80-stuff test. It seems some bytes are going missing in the to->from tape conversion.	2017-06-08 19:49:18 -04:00
Thomas Harte	7e10c7f9d8	Relocated the ZX80/81 concept of a 'file' out from Tape into Data, given that it's an exact duplicate of memory.	2017-06-08 19:09:51 -04:00
Thomas Harte	c47128f433	Widened tolerances and ensured zero bits aren't prematurely discarded.	2017-06-07 17:50:03 -04:00
Thomas Harte	8aab9acc10	Eliminated use of the zero level; now definitively returns a low/high input.	2017-06-07 17:39:29 -04:00
Thomas Harte	dbd2944c13	Took an initial run at the ZX80/81 parser.	2017-06-07 17:27:05 -04:00
Thomas Harte	4603fa6f24	Extended explicitly to support a token of lookahead, which is pretty much what was on offer anyway. Also corrected instance variable names, as per better adoption of C++ norms.	2017-06-07 17:21:57 -04:00
Thomas Harte	60300851ea	Started sketching out a tape parser for ZX80 and '81 files. I think this'll help me to verify whether the .O input is working.	2017-06-07 10:12:13 -04:00
Thomas Harte	58312ea2b7	Updated to new standardisation on curly bracket placement.	2017-06-07 10:05:43 -04:00
Thomas Harte	cb534d8b85	Corrected comment.	2017-06-07 10:05:16 -04:00
Thomas Harte	4677cebf40	Rejigged to correct: spaces go after bits, not after bytes.	2017-06-06 18:29:15 -04:00
Thomas Harte	7399f3d798	Caveman debugging in place, it looks like this file is returning nonsense.	2017-06-06 18:18:55 -04:00
Thomas Harte	faeecf7665	Made sure that there's nothing but silence at the end of the tape, even if the .O file is too long.	2017-06-06 18:16:47 -04:00
Thomas Harte	8c1769f157	Made a quick attempt at serialising from ZX80 .O to waves.	2017-06-04 16:59:26 -04:00
Thomas Harte	655809517c	Ensured that there is a subclass of file that is entrusted to load .O/.80 files, and that the code routes such files to it, noting that it should consider whether a ZX80 is required.	2017-06-04 16:37:03 -04:00
Thomas Harte	5d91a2600d	Permitted ROM-style PRGs that are not a power-of-two in size, and added extra safety checks on loading data from a tape.	2017-05-08 22:15:35 -04:00
Thomas Harte	2807e3134f	Implemented speedy header finding. So that's half of it.	2017-05-07 20:32:48 -04:00
Thomas Harte	e01f3f06c8	Completed curly bracket movement.	2017-03-26 14:34:47 -04:00
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	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	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