Thomas Harte
ec999446e8
Commutes int and unsigned casts to the functional style.
2017-10-21 21:00:40 -04:00
Thomas Harte
5e3e91373a
Switches all unsigned int and double casts to functional style.
2017-10-21 19:49:04 -04:00
Thomas Harte
7f2febeec9
Ensures complete DPLL initial state assignment.
2017-10-17 22:13:37 -04:00
Thomas Harte
2d7a4fe5f0
Switches the MFM shifter to unsigned accumulation.
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Since left shifting signed numbers is undefined behaviour.
2017-10-17 22:12:04 -04:00
Thomas Harte
b4583e976e
Corrects buffer overwrites resulting from failure to treat a number of records of 0x80 as a special case.
2017-10-17 20:52:16 -04:00
Thomas Harte
44cdc124af
Switches to providing a full record of changes to disk images, rather than feeding them a track at a time.
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Gets explicit about `override`s while doing so, to ensure full adaptation.
2017-10-07 19:37:36 -04:00
Thomas Harte
b37787a414
Ensures lifetime-linked track flushing without relying on virtual calls within a destructor.
2017-10-07 19:14:18 -04:00
Thomas Harte
53b99ea248
Uses Disk::flush_tracks to elide replacement of dirty tracks.
2017-10-06 22:07:42 -04:00
Thomas Harte
97a2be71e3
Introduces flush_tracks to Drive, while switching its interface to using Track::Address and adjusting associated integer types.
2017-10-06 21:45:12 -04:00
Thomas Harte
edb9fd301c
Begins this project's conversion to functional-style casts.
2017-10-03 22:04:15 -04:00
Thomas Harte
0fb363ea0e
Adds writing support for HFEs.
2017-10-03 21:24:20 -04:00
Thomas Harte
1cc85615d5
Factors HFE track seeking out from the track fetching method.
2017-10-03 20:33:55 -04:00
Thomas Harte
7b01c1bee6
Revokes direct visibility of is_read_only_ to subclasses of FileHolder.
2017-10-03 19:36:06 -04:00
Thomas Harte
35705c5345
Factors out bit reversing from the HFE class.
2017-10-03 19:12:45 -04:00
Thomas Harte
ef605eda51
Factors out commonalities in SSD/DSD and ADF implementations.
2017-09-30 20:30:15 -04:00
Thomas Harte
326857a84d
Corrects FM/MFM selection when looking for sectors.
2017-09-29 22:48:00 -04:00
Thomas Harte
5dd3945695
Factors out the more egregious similarities between ADF and SSD.
2017-09-29 22:07:23 -04:00
Thomas Harte
19eb975c73
Adds an intermediate step in CP/M directory parsing.
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To reduce amount of time spent allocating and reallocating buffers.
2017-09-29 21:38:16 -04:00
Thomas Harte
698ffca51b
Recasts the [M]FM parser in terms of the new factoring.
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Temporarily breaks SSD writing support.
2017-09-29 20:08:36 -04:00
Thomas Harte
fe3cc5c57c
Removes dead pragma.
2017-09-28 20:47:25 -04:00
Thomas Harte
f488854720
Switches Oric MFM DSK serialisation to feeding a track serialisation to a shifter.
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Thereby eliminates the parser's need to offer get_track.
2017-09-27 22:14:50 -04:00
Thomas Harte
51c0c45e04
Turns MFM bit length into a globally-available constant.
2017-09-27 21:30:09 -04:00
Thomas Harte
c3e1489a8e
Introduces Track::Address, a parallel to Sector::Address to enable more uniform storage.
2017-09-27 21:29:06 -04:00
Thomas Harte
e3420f62c6
Switches the Acorn ADF implementation to using the new track_serialisation/sectors_from_segment route for decomposition of a track into sectors.
2017-09-26 22:05:33 -04:00
Thomas Harte
9f4a407f94
Switches the track serialiser to a more standard header + implementation separation.
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Also introduces a full priming of the PLL before deserialisation begins.
2017-09-26 22:01:32 -04:00
Thomas Harte
5dda897334
Changes function name to sector_size — into line with idioms.
2017-09-26 22:00:19 -04:00
Thomas Harte
3982e375e3
Introduces a route from a PCMSegment to a list of [M]FM sectors.
2017-09-25 19:57:11 -04:00
Thomas Harte
a8524daecb
Marks the move constructor as noexcept, to improve usage with vector.
2017-09-25 19:53:22 -04:00
Thomas Harte
d1ce764201
Provides SectorsFromSegment, a bitstream to sector converter.
2017-09-24 22:41:16 -04:00
Thomas Harte
8875982e1f
Ensures Sectors are move constructible (and still default constructible), and adds proper const qualifiers to Sector::Address.
2017-09-24 22:40:38 -04:00
Thomas Harte
3319a4f589
Isolates those Sector fields that describe its address and makes them usable as a set key.
2017-09-24 21:57:21 -04:00
Thomas Harte
c7f27b2db4
Renames MFM.[c/h]pp as per its new remit: encoding only.
2017-09-24 21:40:43 -04:00
Thomas Harte
631f630549
Severs the MFM parser from the overweight single MFM.hpp.
2017-09-24 20:31:19 -04:00
Thomas Harte
2a08bd9ecc
Factors shifting plus stateful [M]FM token recognition out of the MFMDiskController.
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Given the proliferation of MFM-related classes, establishes a subdirectory for them.
2017-09-24 20:07:56 -04:00
Thomas Harte
f789ee4ff0
Introduces a track to segment decoder.
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This will be needed to make formats like G64 and HFE writeable, but probably also will be usable to speed up static analysis.
2017-09-23 22:39:19 -04:00
Thomas Harte
d72dad2d1a
Severs the DiskImage implementation from its public header file.
2017-09-22 22:46:31 -04:00
Thomas Harte
698e4fe550
Tidies the Disk file hierarchy.
2017-09-22 22:39:23 -04:00
Thomas Harte
b5406b90cd
Introduces a new class hierarchy for disk images.
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Increasing independence of format-specific stuff and generic caching without mangling them into a common namespace, and allowing in some cases for a decrease in read/write blocking.
2017-09-22 20:28:11 -04:00
Thomas Harte
44a56724cb
Speeds up byte decoding within sectors for the ahead-of-time MFM parser.
2017-09-16 20:28:24 -04:00
Thomas Harte
a85909198f
Adds defences against double calls to end writing.
2017-09-16 17:07:36 -04:00
Thomas Harte
da082673d7
Drives now have a finite number of heads.
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The Amstrad volunteers itself to be single sided. Everything else stays as it was.
2017-09-15 21:18:36 -04:00
Thomas Harte
662d031e3c
Adds exposition on the meaning of a disk controller being in write mode.
2017-09-15 19:14:36 -04:00
Thomas Harte
bf20c717fb
The Drive now no longer produces input when in writing mode — other than announcing the index hole.
2017-09-14 22:32:13 -04:00
Thomas Harte
4d4a0cf1d2
Puts the disk controller back into the loop with knowledge about reading mode, and uses that knowledge to cut off the PLL.
2017-09-14 22:30:40 -04:00
Thomas Harte
82b13e98f2
Implements the real hardware ready test for Drives — motor on plus two index holes.
2017-09-11 22:27:50 -04:00
Thomas Harte
96bf133924
Withdraws requirement for DiskController users to specify a PLL multiplier or to provide rotation speed.
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In the latter case because it's no longer of any interest to the controller, and in the former because I'd rather it be picked automatically.
2017-09-10 22:56:05 -04:00
Thomas Harte
6d6cac429d
Fixes extra time accumulation during track running.
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Introduces a bunch of further asserts, which aided me in determining the fix, i.e. that Drives being responsible for their own setup_track could double-pump the event loop.
2017-09-10 22:44:14 -04:00
Thomas Harte
8882aa496f
Corrected wiring to get advance signals through to Drive event delegates.
2017-09-10 20:51:05 -04:00
Thomas Harte
0622187ddf
Strips Controller of all capabilities now housed on the Drive.
2017-09-10 19:23:23 -04:00
Thomas Harte
523e1288fa
Updates the MFM parser to use SingleTrackDisk rather than the equivalent withdrawn Drive functionality.
2017-09-10 17:34:52 -04:00
Thomas Harte
1a96cce26f
Implements SingleTrackDisk, a Disk that contains only a single, specified, track.
2017-09-10 17:34:14 -04:00
Thomas Harte
a4e275e1fc
Provides an implementation of Drive's new interface.
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Mostly lifted from DiskController. `set_disk_with_track` has been withdrawn in favour of providing a suitable wrapper `Disk` subclass, as being an unnecessary complexity and intermingling of concerns.
2017-09-10 17:33:01 -04:00
Thomas Harte
ff6e65cca9
Introduces necessary storage and interface for writing.
2017-09-10 16:23:31 -04:00
Thomas Harte
90c7056d12
Started devolving timed event loop logic down to the drives, moving them closer to modelling real life.
2017-09-10 14:43:20 -04:00
Thomas Harte
c6e6c3fcfb
Resolves all current analyser warnings.
2017-08-24 22:18:44 -04:00
Thomas Harte
49285e9caa
Attempted to implement Sleeper in Drive and therefore in DiskController. Also corrected a couple of nonconformant file names.
2017-08-20 11:54:54 -04:00
Thomas Harte
5344e3098b
Minor: made has_disk something that is decided on insertion/deletion.
2017-08-20 10:55:08 -04:00
Thomas Harte
ef07c33741
Merge branch 'Plus10' into MFMParserDensity
2017-08-18 15:48:20 -04:00
Thomas Harte
e559a65ede
Ideally I would be able to kill this multiplier, as it could easily be derived at runtime. But, for now, just turned it up so that the analysis-oriented parser is better at parsing different bit rates.
2017-08-18 15:47:46 -04:00
Thomas Harte
af61a7fa28
Two quick fixes: correctly set segment size, and flip bytes to match HFE's bit ordering to PCMTrack's.
2017-08-17 22:28:00 -04:00
Thomas Harte
c8c1792c3f
Made a first attempt at HFE support.
2017-08-17 22:20:02 -04:00
Thomas Harte
e6683e7f2d
Added the base skeletal stuff of HFE support.
2017-08-17 21:48:48 -04:00
Thomas Harte
0c1714b695
Relaxed a little to allow +10% in track length.
2017-08-17 21:36:14 -04:00
Thomas Harte
2c2dd8073c
Modified to return nullptr if asked for an extended disk image track that doesn't exist.
2017-08-17 15:32:24 -04:00
Thomas Harte
4f8b89772e
Improved logic for detecting when all sense has been derived from a track to spot any repeated track, not necessarily the first one. That avoids sectors that run over the index hold and obscure the first throwing things.
2017-08-17 15:31:53 -04:00
Thomas Harte
733ee5a5c3
Ensured no attempt to put a null track into the cache
2017-08-17 15:30:02 -04:00
Thomas Harte
fedf5a44a6
Imposes a maximum track length.
2017-08-17 15:20:49 -04:00
Thomas Harte
da3e8655e9
Withdrew some caveman debugging nonsense.
2017-08-17 13:25:19 -04:00
Thomas Harte
42ad670ec8
Fixed: catalogue bitmap is in blocks, not sectors.
2017-08-17 12:47:47 -04:00
Thomas Harte
468770b382
Removed debugging nonsense.
2017-08-15 22:06:58 -04:00
Thomas Harte
6cfc3daacb
Introduced a test within the disk controller so as not to request illegal tracks from disks, instead automatically substituting an 'unformatted' track. Which is just empty.
2017-08-15 21:52:12 -04:00
Thomas Harte
7b92b235e1
Further upped asserts, thereby discovering the mistake I'd recently introduced: seeking properly within the event source as per its potential left-clipping, but then not allowing for that in the calculated current time.
2017-08-15 16:25:46 -04:00
Thomas Harte
c196f0018f
Upped the assert quotient.
2017-08-15 16:15:09 -04:00
Thomas Harte
73080d6c36
Added an easy way for disk controllers to clamp termination of written data exactly to the index hole.
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This commit also temporarily provides a whole load of extra logging and minor logic improvements from the 8272. I'm mid-flow on finding a particularly vicious error in its handling of writing; wait for the pull request. But, at least: now waits for the first part of a post-ID gap before writing data, and attempts partially to handle appearance of the index hole during writing a track. More work to do on that though.
2017-08-15 16:05:10 -04:00
Thomas Harte
9541a2a5f0
Corrections: seek_to now takes the segment_start_time into account, correcting a windowing error where segments overlay other segments. Also added some asserts while bug hunting, and corrected the steps taken when inserting a longer-than-a-track segment so that each is correctly windowed.
2017-08-15 15:54:09 -04:00
Thomas Harte
944222eba4
Added: write_id_data_joiner can now be instructed not to write the first portion of gap. Which makes more sense as an option, to avoiding splicing errors.
2017-08-15 15:29:23 -04:00
Thomas Harte
a366298022
Factored out the standard [M]FM gap and mark groups, to increase 8272 readability and because it's pretty-much certain I'll need them again if ever I try to tackle e.g. the 8271.
2017-08-14 16:03:35 -04:00
Thomas Harte
4df9307d25
Factored out the dull and repetitious stuff of writing n bytes of the same value.
2017-08-14 15:50:36 -04:00
Thomas Harte
cefec7a19f
Sought more robustly (i.e. less repetitively) to handle dispatch, including cancelling seeks where appropriate.
2017-08-14 10:37:39 -04:00
Thomas Harte
1011143dbe
Sought to correct my interpretation of 'gap 3'.
2017-08-13 21:52:48 -04:00
Thomas Harte
750f2cb883
Flagged as not read-only, at least for now, to allow 8272 writing tests definitively to function.
2017-08-13 18:54:39 -04:00
Thomas Harte
1576b4500b
Added documentation.
2017-08-13 18:27:00 -04:00
Thomas Harte
e1e9a06712
Made an attempt at format a track.
2017-08-13 18:05:19 -04:00
Thomas Harte
6e36f8ffa4
Removed index-hole announcement.
2017-08-13 12:50:24 -04:00
Thomas Harte
b0a7208cc7
Strung together a very basic version of 8272 write [/deleted] data. Lots of cases as-yet unhandled.
2017-08-13 12:50:07 -04:00
Thomas Harte
eec42aa7ae
Entrusted further status to drives; also adjusted them to report read only if diskless, which I now believe to be correct.
2017-08-13 11:50:49 -04:00
Thomas Harte
186048a88e
Made an attempt to fix the condition for setting a broken header CRC.
2017-08-12 16:39:32 -04:00
Thomas Harte
0c8769e335
Just to be safe.
2017-08-11 18:41:08 -04:00
Thomas Harte
83c7d34df2
Switched to populating the sector cache with everything in a track the first time anything on that track is requested. That avoids the problem whereby each request of a non-existent sector costs two spins.
2017-08-11 18:40:16 -04:00
Thomas Harte
a12671010a
Sector size is now reported, and CRC failures are merely indicated, not cause for a sector to be thrown away.
2017-08-11 16:23:33 -04:00
Thomas Harte
edb088526f
Simplified slightly, and updated TODO as to still-missing functionality.
2017-08-11 14:33:34 -04:00
Thomas Harte
80ebc63101
Updated the SSD file format container to specify sector sizes, now that it's no longer implicit.
2017-08-11 14:30:35 -04:00
Thomas Harte
cf1403bc79
Increased documentation.
2017-08-11 14:27:07 -04:00
Thomas Harte
fcf63a7547
Expands the [M]FM encoder to respect some new Sector flags: it will now wilfully make CRC errors, omit data, include data that is different than the ID's declared length, write deleted data, and can be commanded as to header/data gaps and what should be within them. All based around expanding towards the needs for reproduction of the CPC's .DSK file format.
2017-08-11 14:24:50 -04:00
Thomas Harte
0411b51582
Added an attempt to deal with 16-bit allocation units, and to ensure middle-of-file holes are respected.
2017-08-11 10:59:37 -04:00
Thomas Harte
026101a268
Killed logic_extents_per_physical, since I don't know how to handle it, and instituted tracks, to allow a decision about short versus long allocation units.
2017-08-11 10:46:50 -04:00
Thomas Harte
734099a956
Threw a sector cache into my MFM parser, in an attempt to cut down analysis costs. Also made it aware of multiple heads.
2017-08-11 10:29:13 -04:00
Thomas Harte
6be5851484
Cleaned up.
2017-08-10 22:34:29 -04:00
Thomas Harte
994179f188
Taking a whole bunch of guesses, this might be correct.
2017-08-10 22:33:08 -04:00
Thomas Harte
6a65c7a52a
Started working on a CPC-oriented analyser; for now I just want to be able to make a good guess at the appropriate file to load from a disk. As it turns out, the CPC simply adopts the CP/M format, so a generic parser is appropriate. This is its beginning.
2017-08-10 17:10:21 -04:00
