Thomas Harte
|
5a508ea0df
|
Attempted properly to cover the exactly-equal starts and ends cases, and to improve meaning.
|
2016-12-20 18:32:49 -05:00 |
|
Thomas Harte
|
63d861a2f3
|
Switched from C-in-the-brain manual offset counting to using iterators like an ordinary C++ person.
|
2016-12-20 18:17:54 -05:00 |
|
Thomas Harte
|
6f17076003
|
Switched to much more logical shared_ptr ownership of PCMSegmentEventSources by Periods.
|
2016-12-20 18:13:10 -05:00 |
|
Thomas Harte
|
497b2ae4dd
|
Still by manual inspection: the time for the next event should be provisional until proven acceptable, allowing a proper measurement of time until exiting the period to be taken; also fixed the accumulated period error when seeking back onto the underlying track.
|
2016-12-20 08:14:16 -05:00 |
|
Thomas Harte
|
6bdde542c5
|
Edging towards functioning automatic tests, fixed right-period adjustment and slightly decreased searching cost while in the process of adding a test.
|
2016-12-20 07:52:14 -05:00 |
|
Thomas Harte
|
ec624eaab1
|
Made an attempt fully to implement PCMPatchedTrack. Which now requires tests.
|
2016-12-20 07:30:57 -05:00 |
|
Thomas Harte
|
1ef1f6ec69
|
Attempted to implemnt seek_to and to finish add_segment. Started doing a little of get_next_event but ran out of time for the day.
|
2016-12-19 21:46:02 -05:00 |
|
Thomas Harte
|
8f937ceac8
|
Made an attempt to come up with a data structure that actually makes sense (though perhaps this is textbook list rather than vector stuff? I guess it depends on the frequency I expect inserts to occur versus reads) and to implement inserts. Though the Periods aren't yet honoured.
|
2016-12-19 07:42:43 -05:00 |
|
Thomas Harte
|
e081f224b6
|
Implemented a very basic PCMTrack test, nevertheless revealing an oversight in PCMSegmentEventSource related to improperly counting to the index hole if the final bit is set. Took that as a message that I should comment and document the event source.
|
2016-12-18 22:53:24 -05:00 |
|
Thomas Harte
|
a6354ebb01
|
Reimplemented PCMTrack to use PCMSegmentEventSource, eliminating code duplication.
|
2016-12-18 21:37:05 -05:00 |
|
Thomas Harte
|
f9a5595dad
|
Added seeking tests, correcting such errors as uncovered.
|
2016-12-18 10:19:24 -05:00 |
|
Thomas Harte
|
3297f6d545
|
Made an attempt to implement seek_to on PCMSegmentEventSource, taking account of off-by-half counting.
|
2016-12-17 22:44:33 -05:00 |
|
Thomas Harte
|
3116a2cf4c
|
Realised I was actually testing PCMSegmentEventSource, not PCMSegment; implemented a spread of tests; hence fixed PCMSegmentEventSource.
|
2016-12-17 21:47:13 -05:00 |
|
Thomas Harte
|
254cc41fd6
|
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.
|
2016-12-17 21:13:57 -05:00 |
|
Thomas Harte
|
313db75303
|
Ensured the patchable track owns its underlying track.
|
2016-12-17 18:17:22 -05:00 |
|
Thomas Harte
|
f1a08b7ab5
|
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.
|
2016-12-17 16:26:45 -05:00 |
|
Thomas Harte
|
dc08a23ceb
|
This is going to be a slow walk, I think. This class attempts to be the scratchpad which will hold in-memory track modifications.
|
2016-12-16 19:20:38 -05:00 |
|
Thomas Harte
|
c4041b06a8
|
This'll do as a write interface, won't it?
|
2016-12-07 22:19:20 -05:00 |
|
Thomas Harte
|
0dc2aa6454
|
Commuted all of 'Storage' other than 'Tape' to postfix underscores.
|
2016-12-03 11:59:28 -05:00 |
|
Thomas Harte
|
81ee834530
|
As well as a bunch of logging, reinstated rotation position preservation across tracks.
|
2016-12-02 18:36:47 -05:00 |
|
Thomas Harte
|
93c573bfa9
|
Implemented missing status bits (other than the index hole), and a head loading delay for the Microdisc.
|
2016-12-01 21:13:16 -05:00 |
|
Thomas Harte
|
2222cb65d6
|
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.
|
2016-11-30 22:26:02 -05:00 |
|
Thomas Harte
|
f44542c18c
|
Improved naming: this now explains what, not the mechanics of how.
|
2016-11-26 23:35:11 +08:00 |
|
Thomas Harte
|
5c8ecd3051
|
It probably needs a better name, but hastily implemented track caching at the Disk level.
|
2016-11-26 14:27:06 +08:00 |
|
Thomas Harte
|
2f86b07cfa
|
Added a parser for Oric-format MFM disks. Causing my first disk to load!
|
2016-11-26 13:40:10 +08:00 |
|
Thomas Harte
|
dcfdd73077
|
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.
|
2016-11-26 13:39:20 +08:00 |
|
Thomas Harte
|
b180f04c87
|
Okay, so this file format wasn't what I hoped it was. It's another hack. Lots of work to do.
|
2016-11-26 10:19:10 +08:00 |
|
Thomas Harte
|
7613755f94
|
Fixed addressing: types are 1 and 2, not 0 and 1.
|
2016-11-26 10:13:12 +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
|
31c2548804
|
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.
|
2016-11-21 20:14:09 +08:00 |
|
Thomas Harte
|
ca53fac732
|
Switched to assuming a single-sided disk, moved out magic constants.
|
2016-09-26 21:20:30 -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
|
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
|
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
|
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
|
8a1b805d11
|
Fixed file offset calculation for single-sided images.
|
2016-09-19 07:34:10 -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 |
|
Thomas Harte
|
d1c861d3a5
|
That should be that, I hope.
|
2016-09-18 21:09:32 -04:00 |
|
Thomas Harte
|
02c9a82cb5
|
Edging towards SSD/DSD support. Hold on!
|
2016-09-18 19:32:08 -04:00 |
|
Thomas Harte
|
91cd7e143b
|
Started on the SSD/DSD support. Realised I had ommitted multiple head support from my disk class. Fixed that.
|
2016-09-18 19:21:02 -04:00 |
|
Thomas Harte
|
5409c8ec54
|
Switched PCMSegments to std::vector; ensured generated [M]FM tracks are correctly sized, thereby making sure the individual flux windows will be correctly sized.
|
2016-09-18 18:56:35 -04:00 |
|
Thomas Harte
|
d9aaf456f0
|
Adapted pervasively to MSB-first output. Which seems to be correct.
|
2016-09-18 18:46:58 -04:00 |
|
Thomas Harte
|
180c3df2d4
|
Calling it 'number theory' probably isn't accurate but extracted the CRC stuff and started using it for [M]FM encoding.
|
2016-09-18 18:33:26 -04:00 |
|
Thomas Harte
|
55a7418cbf
|
Parameterised to perform FM and MFM encodings, at least subject to CRCs still being missing.
|
2016-09-18 17:16:20 -04:00 |
|
Thomas Harte
|
22eed60d2b
|
Started sketching out basic MFM track encoding. Which possibly even means that the shifters don't need to be public?
|
2016-09-18 16:53:21 -04:00 |
|
Thomas Harte
|
0089c830c6
|
This possibly correctly encapsultes the lowest level of FM and MFM rules.
|
2016-09-18 14:17:06 -04:00 |
|
Thomas Harte
|
bcf91de7e9
|
Declared support for the Acorn disk files, started hammering out an encoder.
|
2016-09-18 13:35:54 -04:00 |
|
Thomas Harte
|
79ef38b123
|
Attempted to use the new get_cycles_until_next_event method to take some repetition outside of the PLL and drive event loops.
|
2016-09-17 22:02:38 -04:00 |
|