104 Commits

Author	SHA1	Message	Date
Thomas Harte	8f8b103224	Slightly tidier. Also in the interim: confirmed no remaining false positives or negatives from the existing published set.	2017-02-27 08:42:43 -05:00
Thomas Harte	1af415a88e	Okay, this is a bit desperate, but worth investigation.	2017-02-27 08:39:53 -05:00
Thomas Harte	fe07cd0248	Made another attempt to distinguish.	2017-02-27 08:06:57 -05:00
Thomas Harte	a3d339092e	Corrected callers of the 6502 disassembler.	2017-02-27 07:56:59 -05:00
Thomas Harte	837216ee9a	Adjusted semantics to allow for more complicated mappings, e.g. whereby supplied data repeats itself within a range.	2017-02-27 07:49:33 -05:00
Thomas Harte	0273860018	Sought to weed out further false positives on CommaVid, partly by introducing a record of internal calls, to pair with the now confusingly named outward_calls.	2017-02-26 21:58:09 -05:00
Thomas Harte	82c089cde4	Factored out paging type detection and, from that, took out 2k cartridge detection. Added an attempt at a CommaVid detector, which does not currently work.	2017-02-26 21:24:54 -05:00
Thomas Harte	8b1ec827e0	Made an initial, very naive attempt to recognise two types of expanded cartridge: those with a superchip and those with a CBS RAM+, in both cases by looking for instructions that appear to write into cartridge space.	2017-02-26 17:11:57 -05:00
Thomas Harte	153525f23d	Extended quality of known address read/write/modify mapping, and started recording internal accesses in addition to external.	2017-02-26 17:10:33 -05:00
Thomas Harte	87afa9140e	Took some provision steps towards paging type autodetection and communication. But I think this is a distraction.	2017-02-20 17:44:36 -05:00
Thomas Harte	7ab6023a0c	Ensured no attempt to call strcmp on null if a file name without an extension got into here.	2017-02-11 13:36:36 -05:00
Thomas Harte	f3d9aec8fc	Fixed Electron's support for automatically booting floppy disks.	2017-01-08 14:47:41 -05:00
Thomas Harte	e5cc77f22d	Added an extra sanity check.	2016-12-30 17:29:51 -05:00
Thomas Harte	beaa868079	Factored the MFM parser out into encodings.	2016-12-25 20:00:57 -05:00
Thomas Harte	4d3bdf8c7c	Fixed failure to initialise the Microdisc flag if loading a tape.	2016-12-06 20:29:05 -05:00
Thomas Harte	59e2a09107	Added assumption that Microdisc => BASIC 1.1.	2016-11-22 08:12:24 +08:00
Thomas Harte	ea33a28695	Any Oric-format disks that are inserted now make it all the way to the Oric, along with a request to emulate the Microdisc. It has received a copy of the ROM. The ball is entirely in its court now.	2016-11-21 20:59:25 +08:00
Thomas Harte	8499783b14	Dragged multibyte primitives and signature checks up to the base class. Implemented support for Oric MFM-style .DSK, at the file format level.	2016-11-21 20:47:16 +08:00
Thomas Harte	8b40ae03ca	Extended analysis to spot IRQ and NMI vector changes, for titles that simply adjust those then exit. Ensured Oric emulator can type and load quickly on an Oric 1 just as well as on an Atmos.	2016-11-15 11:05:53 +08:00
Thomas Harte	e2cdfae8a7	The emulated Oric now has access to both versions of the BASIC ROM and picks between them based on the static analyser's recommendation.	2016-11-15 10:39:16 +08:00
Thomas Harte	ab64731d51	Fixed off-by-one recording of disasssmbled addresses; added logic to the Oric static analyser to try to guess between BASIC 1.1 (the preferred option in a tie-break or if no information is found) and BASIC 1.0.	2016-11-15 10:31:47 +08:00
Thomas Harte	1bffc70494	In theory that's a full disassembler, at least as far as I want to go for now. Time to test.	2016-11-15 08:19:57 +08:00
Thomas Harte	a5fc45e66e	Started fleshing this out; addressing modes are completely decoded, along with a bunch of opcodes, but appropriate address advancement isn't in yet, and neither is filling in derived metadata.	2016-11-14 12:19:09 +08:00
Thomas Harte	1b66847647	Started trying to implement something sufficient of a 6502 disassembler.	2016-11-11 20:10:58 -05:00
Thomas Harte	c257e7f58d	Implemented better sync-to-zero and discovered a header counting bug plus, probably, a misleading representation of gaps in the Oric TAP decoder.	2016-11-07 20:17:06 -05:00
Thomas Harte	80702616ea	Had a quick go at using the Oric parser for static analysis. Found out that synchronisation is lost. Need to investigate.	2016-11-06 22:56:38 -05:00
Thomas Harte	353c1c8ea3	Shifted ownership of PETSCII -> string conversion down to the storage layer, where it's useful for tape parsing.	2016-11-06 18:43:51 -05:00
Thomas Harte	1b15bc3a6c	Started relocating the tape parsers down from static analyser to storage, to signify that they may be used by the emulation (if fast loading is supported on that machine).	2016-11-06 16:13:13 -05:00
Thomas Harte	093eb55fc6	The parsers no longer own a tape, merely taking one as an argument. So they can be an adjunct.	2016-11-06 15:25:18 -05:00
Thomas Harte	8c70dc5891	Implemented typer for the Oric, and I'm starting to think the code is a bit too repetitious. Refactoring will be forthcoming. Added CLOAD"" as the loading command for all Oric software.	2016-11-03 22:14:40 -04:00
Thomas Harte	4a062c616f	Added enough wiring to get Oric TAPs through to a completely unimplemented Oric emulation.	2016-10-11 22:20:13 -04:00
Thomas Harte	df01c78039	It's a bit of a mess but this is probably close to appropriate for Oric TAP files.	2016-10-11 07:39:48 -04:00
Thomas Harte	2411f192f7	Switched back to full typing, even for DFS loading. It saves having to worry about sideways RAM filing systems and shift (if that's even the issue).	2016-10-01 21:09:28 -04:00
Thomas Harte	abf47efd40	Factored out Commodore is-a-ROM test, allowing it to be used from the Commodore analyser and thereby allowing ROMs to get as far as the machine again.	2016-09-29 19:39:13 -04:00
Thomas Harte	79412dc84d	Upped MFM clock cycles, switched back to using the typer for the ADFS and adjusted ADFS ROM slots.	2016-09-28 21:28:34 -04:00
Thomas Harte	572d5587d9	Made a first stab at enabling multi-disk machines and thereby obeying (some of) the Plus 3's status register.	2016-09-25 21:24:16 -04:00
Thomas Harte	9bbcbd1001	Renamed class, intending to turn a Disk::Drive into literally just that, and have a thing with a PLL that consumes events be a Controller.	2016-09-25 20:05:56 -04:00
Thomas Harte	7f4c78139c	Attempted to ensure that ADFS disks get to an appropriately-configured Electron. Not immediately sure why the shift press isn't working; doesn't need to be dealt with immediately.	2016-09-25 19:59:46 -04:00
Thomas Harte	523dbb9678	This'll do for getting the ADF into the machine.	2016-09-25 18:32:26 -04:00
Thomas Harte	de863719d0	Made a first attempt at Acorn ADFS support plus the start of a suitable analyser.	2016-09-25 17:46:11 -04:00
Thomas Harte	6084020ab3	Added shift-break as a better way to boot suitable disks. Continued attempting to clean the 1770.	2016-09-25 14:11:22 -04:00
Thomas Harte	67b54269c9	Added typer support for loading from DFS. It'll do for now.	2016-09-24 22:52:49 -04:00
Thomas Harte	a9e65e9b7a	Tweaked disk side density, added call-outs to a WD1770 if the Electron had one (albeit without run_for_cycles yet as I need to figure out the clock rate), added a shell of the basic functions of the WD1770. No implementation yet.	2016-09-19 22:06:56 -04:00
Thomas Harte	c9dd07cecd	DFS disks are now delivered right up to the emulator's front door. So everything's in place to get started on that WD1770 nonsense.	2016-09-19 08:29:23 -04:00
Thomas Harte	e025768604	Two passes of the index hole => no sector found.	2016-09-19 08:17:07 -04:00
Thomas Harte	64f2538b1f	Added CRC checking to DFS comprehension; fixed a bunch of places where I'd used Objective-C's #import rather than #include.	2016-09-19 08:16:06 -04:00
Thomas Harte	c58cdbf151	Minor tweak to support zero-length files.	2016-09-19 07:37:11 -04:00
Thomas Harte	ca4df5dd61	Introduced a full container for disk catalogues, so as also to capture non-file information, and 'completed' (i.e. albeit that CRC checking is still absent) DFS catalogue decoding.	2016-09-19 07:35:02 -04:00
Thomas Harte	231f3dd0f4	This is exactly as far as I'm going to get with DFS parsing today, I think.	2016-09-18 22:18:01 -04:00
Thomas Harte	b1e7f2dfd0	There's no cache and no CRC checking yet, but this is probably a rough outline of an FM parser.	2016-09-18 22:03:06 -04:00