Thomas Harte
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3297f6d545
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Made an attempt to implement seek_to on PCMSegmentEventSource, taking account of off-by-half counting.
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2016-12-17 22:44:33 -05:00 |
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Thomas Harte
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3116a2cf4c
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Realised I was actually testing PCMSegmentEventSource, not PCMSegment; implemented a spread of tests; hence fixed PCMSegmentEventSource.
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2016-12-17 21:47:13 -05:00 |
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Thomas Harte
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254cc41fd6
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Made an attempt to separate and isolate the stuff of creating flux events from a PCMSegment, eventually to factor that out of PCMTrack and make it available also to PCMPatchedTrack.
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2016-12-17 21:13:57 -05:00 |
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Thomas Harte
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313db75303
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Ensured the patchable track owns its underlying track.
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2016-12-17 18:17:22 -05:00 |
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Thomas Harte
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f1a08b7ab5
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Opted to pass times by reference and added enough to PCMPatchedTrack that it could start being used by the disk controller, albeit that it doesn't work.
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2016-12-17 16:26:45 -05:00 |
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Thomas Harte
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dc08a23ceb
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This is going to be a slow walk, I think. This class attempts to be the scratchpad which will hold in-memory track modifications.
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2016-12-16 19:20:38 -05:00 |
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Thomas Harte
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c4041b06a8
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This'll do as a write interface, won't it?
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2016-12-07 22:19:20 -05:00 |
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Thomas Harte
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3f7f2c6117
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'Tape' has joined the new underscore orthodoxy.
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2016-12-03 12:05:19 -05:00 |
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Thomas Harte
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0dc2aa6454
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Commuted all of 'Storage' other than 'Tape' to postfix underscores.
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2016-12-03 11:59:28 -05:00 |
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Thomas Harte
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81ee834530
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As well as a bunch of logging, reinstated rotation position preservation across tracks.
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2016-12-02 18:36:47 -05:00 |
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Thomas Harte
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93c573bfa9
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Implemented missing status bits (other than the index hole), and a head loading delay for the Microdisc.
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2016-12-01 21:13:16 -05:00 |
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Thomas Harte
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2222cb65d6
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Split the status up into flags, assembled into a register upon demand. Attempted to implement some of the differences between the 1770/1772 and 1773/1793. Albeit with a motor fix still in place.
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2016-11-30 22:26:02 -05:00 |
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Thomas Harte
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f44542c18c
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Improved naming: this now explains what, not the mechanics of how.
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2016-11-26 23:35:11 +08:00 |
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Thomas Harte
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5c8ecd3051
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It probably needs a better name, but hastily implemented track caching at the Disk level.
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2016-11-26 14:27:06 +08:00 |
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Thomas Harte
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2f86b07cfa
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Added a parser for Oric-format MFM disks. Causing my first disk to load!
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2016-11-26 13:40:10 +08:00 |
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Thomas Harte
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dcfdd73077
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Switched to more conventional runtime polymorphism, also now allowing encoders (shifters as were) to be obtained, as a slightly lower-level interface than vector-of-sectors.
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2016-11-26 13:39:20 +08:00 |
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Thomas Harte
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b180f04c87
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Okay, so this file format wasn't what I hoped it was. It's another hack. Lots of work to do.
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2016-11-26 10:19:10 +08:00 |
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Thomas Harte
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7613755f94
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Fixed addressing: types are 1 and 2, not 0 and 1.
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2016-11-26 10:13:12 +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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31c2548804
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Created a base class for the boilerplate fopen stuff, switched as many classes as possible to its use, switched to postfix underscores and non-camelCase names.
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2016-11-21 20:14:09 +08:00 |
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Thomas Harte
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97811fe590
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Made minor fix to ensure that a header that appears to extend beyond the end of an Oric .TAP doesn't create an ostensibly endless tape.
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2016-11-15 12:02:03 +08:00 |
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Thomas Harte
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fce48b9b8c
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I am instructed that the Oric actually catches only positive transitions, and compares the distance between those to a threshold. So here's an altered version of the tape parser that does that.
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2016-11-09 06:37:10 -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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7205c3f82b
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Made an attempt to build in Oric slow/fast detection.
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2016-11-06 21:31:10 -05:00 |
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Thomas Harte
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d1ef2f7c63
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Made an attempt to consolidate what I learnt of Oric encoding while building this hastily and untidily directly into the Oric implementation.
(while adding support for the slow tape encoding mode)
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2016-11-06 19:22:09 -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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827a919368
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This is an initial attempt at reading actual tape data. It loses sync though.
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2016-11-02 22:30:53 -04:00 |
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Thomas Harte
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d3634488e6
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Made an attempt better to deal with multiple-file TAPs; also started using a zero level for the header/data gap.
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2016-10-24 21:59:06 -04:00 |
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Thomas Harte
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cbbd31c2e0
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Explained what this recently factored-out class does, and removed code from the header.
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2016-10-20 19:33:25 -04:00 |
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Thomas Harte
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cc0b70828b
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Removed attempt at multiple-file logic, at least for the time being. Starting to wonder whether I actually need anything beyond a literal streaming of bytes?
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2016-10-16 22:15:24 -04:00 |
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Thomas Harte
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fae1bb0db9
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First successful game loaded! It turns out exactly one '$' is correct. Probably.
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2016-10-15 21:49:41 -04:00 |
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Thomas Harte
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952a24f769
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A quick hard-wiring of the OricTAP code to get the first file in a .tap correct, damn the rest, and I'm getting some on-screen feedback. Hooray!
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2016-10-15 21:39:53 -04:00 |
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Thomas Harte
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a608bbebfb
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Performed enough wiring to put the onus back onto OricTAP to do appropriate things.
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2016-10-15 21:32:59 -04:00 |
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Thomas Harte
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6d7c3f6ac2
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Factored out the now-sampling binary-level tape player from the Vic and connected it up to the Oric.
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2016-10-15 21:21:18 -04:00 |
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Thomas Harte
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4f78d693e9
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Reintroduced gap as a string of 1s, made an attempt to look up bit ordering. Still unclear on high/low versus low/high.
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2016-10-11 08:07:51 -04:00 |
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Thomas Harte
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70f004efbb
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This may be feeding bits in the wrong direction or calculting the wrong parity or doing something else amiss but should now be correct as to bytes.
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2016-10-11 07:57:10 -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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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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4010f36238
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Ensured tape-formatted PRGs reach a conclusion.
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2016-09-29 19:12:26 -04:00 |
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Thomas Harte
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ca53fac732
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Switched to assuming a single-sided disk, moved out magic constants.
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2016-09-26 21:20:30 -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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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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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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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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8a1b805d11
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Fixed file offset calculation for single-sided images.
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2016-09-19 07:34:10 -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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