Thomas Harte
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4d3bdf8c7c
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Fixed failure to initialise the Microdisc flag if loading a tape.
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2016-12-06 20:29:05 -05:00 |
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Thomas Harte
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59e2a09107
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Added assumption that Microdisc => BASIC 1.1.
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2016-11-22 08:12:24 +08:00 |
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Thomas Harte
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ea33a28695
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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.
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2016-11-21 20:59:25 +08:00 |
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Thomas Harte
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8499783b14
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Dragged multibyte primitives and signature checks up to the base class. Implemented support for Oric MFM-style .DSK, at the file format level.
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2016-11-21 20:47:16 +08:00 |
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Thomas Harte
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8b40ae03ca
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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.
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2016-11-15 11:05:53 +08:00 |
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Thomas Harte
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e2cdfae8a7
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The emulated Oric now has access to both versions of the BASIC ROM and picks between them based on the static analyser's recommendation.
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2016-11-15 10:39:16 +08:00 |
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Thomas Harte
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ab64731d51
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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.
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2016-11-15 10:31:47 +08:00 |
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Thomas Harte
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1bffc70494
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In theory that's a full disassembler, at least as far as I want to go for now. Time to test.
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2016-11-15 08:19:57 +08:00 |
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Thomas Harte
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a5fc45e66e
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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.
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2016-11-14 12:19:09 +08:00 |
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Thomas Harte
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1b66847647
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Started trying to implement something sufficient of a 6502 disassembler.
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2016-11-11 20:10:58 -05:00 |
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Thomas Harte
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c257e7f58d
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Implemented better sync-to-zero and discovered a header counting bug plus, probably, a misleading representation of gaps in the Oric TAP decoder.
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2016-11-07 20:17:06 -05:00 |
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Thomas Harte
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80702616ea
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Had a quick go at using the Oric parser for static analysis. Found out that synchronisation is lost. Need to investigate.
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2016-11-06 22:56:38 -05:00 |
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Thomas Harte
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353c1c8ea3
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Shifted ownership of PETSCII -> string conversion down to the storage layer, where it's useful for tape parsing.
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2016-11-06 18:43:51 -05:00 |
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Thomas Harte
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1b15bc3a6c
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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).
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2016-11-06 16:13:13 -05:00 |
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Thomas Harte
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093eb55fc6
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The parsers no longer own a tape, merely taking one as an argument. So they can be an adjunct.
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2016-11-06 15:25:18 -05:00 |
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Thomas Harte
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8c70dc5891
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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.
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2016-11-03 22:14:40 -04:00 |
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Thomas Harte
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4a062c616f
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Added enough wiring to get Oric TAPs through to a completely unimplemented Oric emulation.
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2016-10-11 22:20:13 -04:00 |
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Thomas Harte
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df01c78039
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It's a bit of a mess but this is probably close to appropriate for Oric TAP files.
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2016-10-11 07:39:48 -04:00 |
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Thomas Harte
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2411f192f7
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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).
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2016-10-01 21:09:28 -04:00 |
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Thomas Harte
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abf47efd40
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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.
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2016-09-29 19:39:13 -04:00 |
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Thomas Harte
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79412dc84d
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Upped MFM clock cycles, switched back to using the typer for the ADFS and adjusted ADFS ROM slots.
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2016-09-28 21:28:34 -04:00 |
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Thomas Harte
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572d5587d9
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Made a first stab at enabling multi-disk machines and thereby obeying (some of) the Plus 3's status register.
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2016-09-25 21:24:16 -04:00 |
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Thomas Harte
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9bbcbd1001
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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.
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2016-09-25 20:05:56 -04:00 |
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Thomas Harte
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7f4c78139c
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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.
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2016-09-25 19:59:46 -04:00 |
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Thomas Harte
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523dbb9678
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This'll do for getting the ADF into the machine.
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2016-09-25 18:32:26 -04:00 |
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Thomas Harte
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de863719d0
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Made a first attempt at Acorn ADFS support plus the start of a suitable analyser.
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2016-09-25 17:46:11 -04:00 |
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Thomas Harte
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6084020ab3
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Added shift-break as a better way to boot suitable disks. Continued attempting to clean the 1770.
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2016-09-25 14:11:22 -04:00 |
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Thomas Harte
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67b54269c9
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Added typer support for loading from DFS. It'll do for now.
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2016-09-24 22:52:49 -04:00 |
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Thomas Harte
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a9e65e9b7a
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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.
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2016-09-19 22:06:56 -04:00 |
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Thomas Harte
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c9dd07cecd
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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.
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2016-09-19 08:29:23 -04:00 |
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Thomas Harte
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e025768604
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Two passes of the index hole => no sector found.
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2016-09-19 08:17:07 -04:00 |
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Thomas Harte
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64f2538b1f
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Added CRC checking to DFS comprehension; fixed a bunch of places where I'd used Objective-C's #import rather than #include.
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2016-09-19 08:16:06 -04:00 |
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Thomas Harte
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c58cdbf151
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Minor tweak to support zero-length files.
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2016-09-19 07:37:11 -04:00 |
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Thomas Harte
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ca4df5dd61
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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.
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2016-09-19 07:35:02 -04:00 |
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Thomas Harte
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231f3dd0f4
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This is exactly as far as I'm going to get with DFS parsing today, I think.
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2016-09-18 22:18:01 -04:00 |
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Thomas Harte
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b1e7f2dfd0
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There's no cache and no CRC checking yet, but this is probably a rough outline of an FM parser.
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2016-09-18 22:03:06 -04:00 |
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Thomas Harte
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0ce901bd48
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Added necessary wiring to get as far as asking an arm of the analyser to check out an Acorn disk image.
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2016-09-18 21:18:11 -04:00 |
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Thomas Harte
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91cd7e143b
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Started on the SSD/DSD support. Realised I had ommitted multiple head support from my disk class. Fixed that.
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2016-09-18 19:21:02 -04:00 |
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Thomas Harte
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5ebca62bba
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Now the CRC is a factoring out.
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2016-09-18 18:35:50 -04:00 |
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Thomas Harte
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bfed9585b8
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Added a sector cache to avoid having to re-decode things five times over.
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2016-09-17 22:01:54 -04:00 |
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Thomas Harte
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ee8510984f
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Added just enough wiring to restore the 2600 to functionality.
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2016-09-15 19:34:45 -04:00 |
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Thomas Harte
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92af19098c
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Improved file naming.
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2016-09-15 19:24:59 -04:00 |
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Thomas Harte
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1d8fbe9068
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With minor cleaning, this should now do Commodore disks correctly (?)
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2016-09-15 19:21:09 -04:00 |
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Thomas Harte
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9827466297
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Minor post-haste cleaning.
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2016-09-15 07:58:32 -04:00 |
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Thomas Harte
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8992feb8cd
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Completed a first parse at the GCR parser, proving how incredibly slow my drive is.
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2016-09-15 07:54:42 -04:00 |
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Thomas Harte
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9d6dcb80a7
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Started work on a GCR parser and the helper functions that lie behind that.
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2016-09-13 21:53:36 -04:00 |
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Thomas Harte
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df7aed7e8b
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The Commodore analyser now at least hands off to somebody else a chance to parse disks.
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2016-09-13 07:26:51 -04:00 |
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Thomas Harte
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40660fe680
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Made yet another guess at Commodore analysis. Elevated fast tape-related unnatural speed up to the OS-side mechanisms.
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2016-09-12 22:06:03 -04:00 |
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Thomas Harte
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eeec516fa6
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Implemented seeking on tapes, mucked about a bit more with the Commodore analyser, at least temporarily removed cropping from the Vic emulator.
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2016-09-11 17:09:00 -04:00 |
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Thomas Harte
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1ca4a2a012
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Sought to be more intelligent in handling cases where the two parts of a header or data field don't match — if either looks good then use it in isolation.
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2016-09-10 17:01:17 -04:00 |
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Thomas Harte
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a5b17932ca
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Attempted further to improve memory model guesswork. With many further improvements to make...
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2016-09-08 21:09:37 -04:00 |
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Thomas Harte
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27fedaf892
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The error flag is no longer directly exposed. I also tweaked the Commodore import numbers just a touch. But I think I need proper calibration.
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2016-09-08 21:09:05 -04:00 |
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Thomas Harte
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2b053436e5
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Missed from previous commit; removed assumption that get_next_data always succeeds.
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2016-09-08 07:39:43 -04:00 |
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Thomas Harte
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54557d7f13
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Added reminder, ensured the couldn't-find-data case doesn't cause a crash. Though it should imply some manual investigation.
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2016-09-08 07:39:17 -04:00 |
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Thomas Harte
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50175a9aed
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Added logic to try to spot when the first program is BASIC and, if so, what the correct memory model is, then to get that information to the Vic. Though it currently then gets overwritten by the view controller. Grrrr.
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2016-09-07 22:17:19 -04:00 |
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Thomas Harte
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556b77f2fd
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Added some TODOs, re-enabled master Acorn decision.
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2016-09-07 07:39:47 -04:00 |
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Thomas Harte
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6522a9a6c2
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Pulled the strands together provisionally to complete Commodore ROM-format tape parsing. Things are going to get complicated if or when I need to tackle turbo loaders.
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2016-09-07 07:34:48 -04:00 |
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Thomas Harte
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d66516fd62
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Finished parser for data blocks.
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2016-09-06 22:10:33 -04:00 |
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Thomas Harte
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bdebc18e0a
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Added a header parser for Commodore tapes. No time to grab file bodies now; time to go to work.
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2016-09-06 08:49:32 -04:00 |
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Thomas Harte
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8901e94f0f
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Fixed: was counting between low->high transitions rather than vice versa by adding low time then checking.
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2016-09-06 07:06:46 -04:00 |
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Thomas Harte
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149cbb327b
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Made something of a first attempt at a parser. Which is failing terribly.
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2016-09-06 06:59:51 -04:00 |
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Thomas Harte
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8b933182af
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Added enough wiring (hopefully) that the Commodore tape's GetFiles should be called when appropriate.
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2016-09-06 06:39:40 -04:00 |
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Thomas Harte
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cfe8251166
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Further documented interface, fixed a potential parsing blockage.
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2016-09-05 22:12:52 -04:00 |
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Thomas Harte
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963e307d0c
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Increased documentation.
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2016-09-05 22:06:39 -04:00 |
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Thomas Harte
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05c24222d8
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Liberated the tape parser template.
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2016-09-05 20:02:35 -04:00 |
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Thomas Harte
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463b74301d
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Sought to reduce the amount of heap nonsense.
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2016-09-05 19:59:58 -04:00 |
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Thomas Harte
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11850b872d
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Sought to emulate 0111 as a longer 0110 to test a particular HQ UEF. Some progress. Not great.
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2016-09-05 18:28:43 -04:00 |
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Thomas Harte
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6239297212
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Fixed off-by-one error on filename lengths and order-of-operations mistake preventing data CRC from being checked.
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2016-09-05 18:15:15 -04:00 |
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Thomas Harte
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e25fee2332
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I'm going back to believing in this test.
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2016-09-05 17:55:40 -04:00 |
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Thomas Harte
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68874b6080
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Fixed accidental implicit assumption that Acorn files will be at least two blocks.
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2016-09-05 17:53:57 -04:00 |
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Thomas Harte
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93f5b5303e
|
Factored out the stuff I expect to be common to this tape nonsense, started looking at the one currently-failing tape. More on the latter to do.
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2016-09-05 17:17:52 -04:00 |
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Thomas Harte
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6f62803814
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Resolved dropping of every other file.
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2016-09-01 08:35:28 -04:00 |
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Thomas Harte
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21e5f407d8
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I need to get a bit more definitive on naming but this gets all the way to setting a configuration upon an Electron.
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2016-08-31 22:03:42 -04:00 |
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Thomas Harte
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9d7962d6c0
|
Closed the loop on Electron analysis for now. Including loading command detection.
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2016-08-31 20:24:13 -04:00 |
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Thomas Harte
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d8c0da7ccb
|
I think this should lead to a full representation of files on an Acorn tape, but subject to is_at_end working.
|
2016-08-31 19:57:09 -04:00 |
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Thomas Harte
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7b5d5858ff
|
CRCs are just stored reversed. Of course. So this should be sufficient to load each chunk of an Acorn file.
|
2016-08-30 08:13:40 -04:00 |
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Thomas Harte
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b3521ed187
|
Started working towards capturing everything there is to know about a file. CRC calculation appears to be flawed somehow at the moment.
|
2016-08-30 07:38:08 -04:00 |
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Thomas Harte
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6218f05b8c
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This loads the name. That'll do for now.
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2016-08-29 22:05:06 -04:00 |
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Thomas Harte
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963a479908
|
Made a quick first attempt at getting a file name from Acorn tape, failing terribly but at least formalising tapes being able to signal their end.
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2016-08-29 21:53:06 -04:00 |
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Thomas Harte
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0032ad2634
|
Edging ever onwards; killed forced attempt at uniformity in targets, sketched out the interface for a next-file-from call to Acorn tapes.
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2016-08-29 21:10:38 -04:00 |
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Thomas Harte
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d1abfc040c
|
Addressed my dithering here: the file format containers themselves should do nothing but inspect the data to find out whether it is of the correct format. The machine steps are there for machine-specific validation. So it's probably easier to treat a binary ROM image just as a binary ROM image. Therefore, the Acorn-specific .rom detection is now in an Acorn-specific area.
|
2016-08-29 08:48:49 -04:00 |
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Thomas Harte
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d9f0065154
|
Sketched out just enough classes to get through the get-contents-into-memory step of static analysis.
|
2016-08-28 12:20:40 -04:00 |
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Thomas Harte
|
24938326ac
|
ROMs definitely have no behaviour other than responding to memory accesses. Cartridges might. So picked the more general term. Sketched out a class at least to parse PRG as though it were a cartridge. Hence the static analyser can guess at whether a PRG is a cartridge or an ordinary program.
|
2016-08-27 18:26:51 -04:00 |
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Thomas Harte
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a1b3a18d11
|
Started forcing a resolution on ROMs by doing. But have immediately misstepped. Rename coming momentarily...
|
2016-08-27 18:17:40 -04:00 |
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Thomas Harte
|
56c0d70c1f
|
Gave disks their own namespace.
|
2016-08-27 17:15:09 -04:00 |
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Thomas Harte
|
c0402d0c2b
|
Gave tapes their own namespace.
|
2016-08-27 17:09:45 -04:00 |
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Thomas Harte
|
8c333059a8
|
Turning this into a slog: gave UEF a more appropriate name, got as far as now having to decide what to do about ROMs as to structure. I guess they're machine specific, so specific classes?
|
2016-08-27 16:40:21 -04:00 |
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Thomas Harte
|
55ada536ac
|
Added a test call, further mutated result structure.
|
2016-08-27 14:25:16 -04:00 |
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Thomas Harte
|
e68ff64045
|
Actually, this is less prescriptive.
|
2016-08-27 13:42:51 -04:00 |
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Thomas Harte
|
5ffd9e4f0d
|
This is probably how the static analyser interface will look?
|
2016-08-23 21:35:59 -04:00 |
|