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989 Commits

Author SHA1 Message Date
Thomas Harte
ecb5807ec0 Enssures STX interprets sector sizes correctly. 2020-01-14 21:35:37 -05:00
Thomas Harte
942986aadc Insures against badly-placed locations. 2020-01-13 22:49:12 -05:00
Thomas Harte
1f539822ee Adds better support for WD-esque false sync, improves STX track patching. 2020-01-13 22:19:48 -05:00
Thomas Harte
fab35b360a Ensure an encoder is created even if no sectors are placed. 2020-01-12 22:37:00 -05:00
Thomas Harte
b3b2e18c4b Ensures head and track counts are reported accurately. 2020-01-12 22:23:34 -05:00
Thomas Harte
2d233b6358 Makes a more concrete attempt at track/sector combination. 2020-01-12 22:18:31 -05:00
Thomas Harte
83ed36eb08 Add missing #include. 2020-01-12 17:56:04 -05:00
Thomas Harte
89f4032ffc Merge branch 'master' into STX2 2020-01-12 17:55:19 -05:00
Thomas Harte
514141f8c5 Eliminates the optionality of a DPLL receiver. 2020-01-12 17:45:02 -05:00
Thomas Harte
8e3a618619 Corrects Mac build, shrinks default history [back] to 3 slots. 2020-01-12 17:33:34 -05:00
Thomas Harte
6df6af09de Remove dead .cpp. 2020-01-12 17:25:59 -05:00
Thomas Harte
f42655a0fc Promote DigitalPhaseLockedLoop to a template, simplify to O(1) add_pulse. 2020-01-12 17:25:21 -05:00
Thomas Harte
f81a7f0faf Ensures prefixes are MFM encoded and decoded. 2020-01-11 22:10:41 -05:00
Thomas Harte
2b4c924399 Makes an effort to locate address and data bodies within track. 
"Not completely successful" would be the polite term.
 2020-01-09 23:28:07 -05:00
Thomas Harte
64517a02b7 Adds code to deal with sector-free tracks. 2020-01-09 21:50:32 -05:00
Thomas Harte
b4befd57a9 Advances to being able to cope with STXs with no special features whatsoever. 
Well, other than perhaps a broken data CRC. Fuzzy bits, timing differences and the stuff between sectors are all currently absent.
 2020-01-09 21:03:01 -05:00
Thomas Harte
985b36da73 Starts towards STX support. 2020-01-07 23:21:32 -05:00
Thomas Harte
c0b5bfe726 Ensure no possible return without value. 2020-01-02 23:43:53 -05:00
Thomas Harte
54fe01b532 Fixed: the final track is inclusive, not exclusive. 2019-12-24 23:08:16 -05:00
Thomas Harte
f633cf4c3f Adds a basic implementation of the non-instantaneous index pulse. 2019-12-24 21:05:17 -05:00
Thomas Harte
dfa6b11737 Adds responsibility for an ongoing index pulse to the drive. 2019-12-24 20:53:37 -05:00
Thomas Harte
adc2b77833 Enhances with constexpr. 2019-12-24 18:53:50 -05:00
Thomas Harte
0dae608da5 Embraces std::make_[unique/shared] in place of .reset(new . 2019-12-23 21:31:46 -05:00
Thomas Harte
34a3790e11 Minor static_cast clean-ups. 2019-12-22 17:56:59 -05:00
Thomas Harte
5456a4a39d Eliminates static where constexpra aren't class members; adds some if constexprs for clarity. 2019-12-22 13:42:24 -05:00
Thomas Harte
274867579b Deploys constexpr as a stricter const. 2019-12-22 00:22:17 -05:00
Thomas Harte
a847654ef2 Corrects various old-fashioned bits of indentation, plus the odd const. 2019-12-22 00:00:23 -05:00
Thomas Harte
05d77d3297 Also deploys make_unique/shared to avoid type repetition. 2019-12-21 23:52:04 -05:00
Thomas Harte
e9318efeb6 Switches to std::make_shared/make_unique in a bunch of applicable places. 
No doubt many more similar improvements are available, these are just the ones that were easy to find.
 2019-12-21 23:34:25 -05:00
Thomas Harte
416d68ab3a Installs some additional safety guards. 2019-12-19 22:27:50 -05:00
Thomas Harte
797abae4b3 Compacts gaps when necessary to fit more sectors. 2019-12-19 19:36:19 -05:00
Thomas Harte
332f0d6167 Ensures MSAs are explicitly read-only. 2019-12-08 11:52:15 -05:00
Thomas Harte
9d07765823 Ensures proper precedence of * over %. 2019-11-14 23:19:31 -05:00
Thomas Harte
2c4f372872 Adds support for the .ST file format. 2019-11-12 23:23:14 -05:00
Thomas Harte
74be876d72 Corrects track count calculation for DSD disks. 2019-11-12 23:22:56 -05:00
Thomas Harte
e8e166eec5 Ensures no out-of-disk-bounds mirroring. 2019-11-12 23:22:25 -05:00
Thomas Harte
0204003680 Resolves GCC warnings. 2019-11-09 16:12:37 -05:00
Thomas Harte
0971bbeebe Merge branch 'master' into AtariST 2019-11-05 23:24:26 -05:00
Thomas Harte
f3e2e88986 Update explanation of NIB processing. 2019-11-05 23:20:20 -05:00
Thomas Harte
46ec3510be Fixed: ST sectors are numbered from 1, not 0. 2019-11-03 21:18:29 -05:00
Thomas Harte
1c154131f9 Expands size of storage in Cycles/HalfCycles; adjusts widely to compensate. 2019-10-29 22:36:29 -04:00
Thomas Harte
909685d87d A drive with no disk is now happy to spin its motor. 
It'll continue to produce index-hole events, which might not be accurate for 5.25" drives. Research to do.
 2019-10-26 22:57:05 -04:00
Thomas Harte
c66c484c54 Removes unused includes. 2019-10-20 20:38:54 -04:00
Thomas Harte
345b32d6e3 Implements read-only MSA support. 2019-10-20 20:38:54 -04:00
Thomas Harte
8b397626bf Adds a route through the static analyser to the Atari ST. 2019-10-20 20:38:54 -04:00
Thomas Harte
9d17d48bca Ensures cycles_per_revolution_ is populated for fixed-rate drives. 2019-09-28 23:23:15 -04:00
Thomas Harte
776b819a5a Adds the SCSI bus as an Activity::Source. 2019-09-19 19:31:22 -04:00
Thomas Harte
3d54d55dbb Adds missing #include for assert. 2019-09-18 22:06:13 -04:00
Thomas Harte
72c0a631f7 Moves includes to correct file. 2019-09-18 22:04:54 -04:00
Thomas Harte
1608a90d5d Takes another stab at finding ssize_t. 2019-09-18 22:03:51 -04:00
Thomas Harte
4f8a45a6ce Adds #include for ssize_t. 2019-09-18 22:02:59 -04:00
Thomas Harte
4f0f1dcf18 Corrects accidental use of #import. 2019-09-18 21:53:22 -04:00
Thomas Harte
8d4a96683a Reduces output noise. 2019-09-18 21:41:29 -04:00
Thomas Harte
128a1da626 Enables write support. 2019-09-18 20:18:02 -04:00
Thomas Harte
962275c22a Removes clock for NCR 5380. 
It doesn't have one in real life, and now can live off the time counting that occurs on the SCSI bus.
 2019-09-18 20:17:47 -04:00
Thomas Harte
3002ac8a4a Adds mapping of READ(8) size 0 to size 256. 2019-09-17 21:59:32 -04:00
Thomas Harte
ff43674638 Corrects partition map: string fields are 32 bytes long. 2019-09-17 21:46:14 -04:00
Thomas Harte
2f6c366668 Makes a concerted effort at properly wrapping a hard disk image. 2019-09-17 21:30:04 -04:00
Thomas Harte
2ce1f0a3b1 Implements multi-sector read/write. 
This once again unblocks Apple HD SC Setup. Progress!
 2019-09-16 22:20:42 -04:00
Thomas Harte
210129c3a1 Updated as per Inside Macintosh IV. 
Of which I now own a copy.
 2019-09-16 21:31:43 -04:00
Thomas Harte
934901447a Adds a temporary version of block access writing. 
Whatever I'm doing, it's still not correct. The Macintosh ostensibly appears to 0-fill the direct-access device, then reads a sector back and hangs.
 2019-09-15 22:06:45 -04:00
Thomas Harte
c849188016 Adds format and write to the SCSI target. 
Now I think I need to switch back to the 5380 to ensure proper DMA mode interactions when writing.
 2019-09-12 21:58:09 -04:00
Thomas Harte
87e8dade2f Implements READ BUFFER to do, you know, *something*. Plus READ CAPACITY. 
The HD SC utility now offers up drive 6 for formatting. That's progress.
 2019-09-11 21:52:02 -04:00
Thomas Harte
6fc5b4e825 Simplifies INQUIRY for future targets; implements enough of SENSE MODE to advance. 
The HD SC setup utility is now looking to read buffer.
 2019-09-08 21:59:56 -04:00
Thomas Harte
00ce7f8ae0 Takes a first shot at INQUIRY. 2019-09-07 22:04:44 -04:00
Thomas Harte
6e0e9afe2f Fixed: to post a message, I want message in, not message out. 2019-09-07 13:35:38 -04:00
Thomas Harte
cb0d994827 Provides empty data for the unimplemented sectors. 2019-09-07 13:17:53 -04:00
Thomas Harte
bee782234a Ensures no state transitions while acknowledge is still asserted. 2019-09-07 13:17:34 -04:00
Thomas Harte
cbd1a8cf78 Factors out command termination, adds a default implementation of test unit ready. 2019-09-03 22:40:18 -04:00
Thomas Harte
a4ab0afce3 Takes a shot at completing a full SCSI interaction. 2019-09-03 21:15:30 -04:00
Thomas Harte
1c7e0f3c9d Fixes control line modification by the 5380 and SCSI target command chaining. 
So now I'm back to trying to guess how a SCSI command terminates re: the relative meanings of a message phase and a status phase.
 2019-09-02 23:14:37 -04:00
Thomas Harte
318cdb41ea Adds SCSI bus clocking to the Macintosh, and fixes its internal counting. 2019-09-02 16:03:33 -04:00
Thomas Harte
2f8e31bc8b Takes a first bash at implementing the new SCSI::Bus timing infrastructure. 2019-09-02 13:00:01 -04:00
Thomas Harte
310c722cc0 Starts a transition to bus-level knowledge of SCSI-specific bus timing thresholds. 
The idea being that bus attachees need not all count time for themselves. They can be very plain finite state machines.

New semantics are not yet implemented within the Bus. The plan is to do that, remove the internal counting of time within the NCR, then adjust the Target to be more explicitly stateful.
 2019-08-31 21:44:22 -04:00
Thomas Harte
25956bd90f Mildly improves temporary logging. 
A deckchair shuffle, at best.
 2019-08-26 22:35:11 -04:00
Thomas Harte
1a60ced61b Starts trying to deal with creating a whole volume from merely a partition. 2019-08-25 23:03:54 -04:00
Thomas Harte
081316c071 Adds some additional commentary as this takes shape. 2019-08-25 17:46:05 -04:00
Thomas Harte
eafbc12cc1 Ensures a clean entry into the command phase. 2019-08-25 17:43:14 -04:00
Thomas Harte
ca08716c52 Introduces real hard disk images to the nascent world of SCSI. 2019-08-25 17:03:41 -04:00
Thomas Harte
30cef1ee22 Adds write support. 2019-08-25 15:16:35 -04:00
Thomas Harte
404b088199 Adds a trivial mass-storage device, for Macintosh HFV volumes. 2019-08-25 15:09:27 -04:00
Thomas Harte
7d61df238a Localises #include. 2019-08-25 15:09:04 -04:00
Thomas Harte
c86db12f1c Starts implementing DMA support on the 5380. 
The Macintosh doesn't actually use the DMA signals, but uses pseudo-DMA mode so they nevertheless need to be appropriate.
 2019-08-24 22:47:11 -04:00
Thomas Harte
ce2e85af8b Adds missing bus state callouts. 2019-08-22 23:27:00 -04:00
Thomas Harte
2d82855f26 Attempts to provide a data out phase. 2019-08-22 23:16:58 -04:00
Thomas Harte
faec516a2c Starts pushing towards figuring out a proper infrastructure for mass storage. 2019-08-21 23:22:58 -04:00
Thomas Harte
f668e4a54c Makes an attempt at getting the 5380 past arbitration. 
Not entirely successful. Also gets a bit smarter with `final` on ClockingHint::Sources.
 2019-08-15 23:14:40 -04:00
Thomas Harte
b1f04ed96d Eliminates the crutch of PlusToo BIN files. 
Thereby returning the .bin extension to the various consoles.
 2019-07-28 16:07:16 -04:00
Thomas Harte
786b26d23e Adds an admission of incompleteness. 
I really need to figure out the 5-and-3 encoding.
 2019-07-26 23:23:40 -04:00
Thomas Harte
d08d8ed22c Adds a further drift safeguard. 2019-07-26 23:23:01 -04:00
Thomas Harte
39d7e3c62c Ensures relative_exponents less than or equal to -32 don't overflow. 2019-07-26 22:19:40 -04:00
Thomas Harte
572e8b52e1 At the cost of extra storage, attempts to simplify away potential rounding issues around the index hole. 2019-07-26 17:20:32 -04:00
Thomas Harte
9b634472c6 Gets a little more rigorous on "high resolution". 2019-07-26 15:26:51 -04:00
Thomas Harte
d2bfd59953 Ensures positional continuity across rotation speed changes. 2019-07-25 22:29:54 -04:00
Thomas Harte
3d20ae47ea Ensures cycles_since_index_hole_ is wrapped to track length. 2019-07-25 21:48:01 -04:00
Thomas Harte
77333ff9f7 It appears that file checksums are not reliable. 2019-07-17 14:56:50 -04:00
Thomas Harte
79a624e696 Applies more rigorous logic to deciding when to stop parsing. 2019-07-16 18:06:54 -04:00
Thomas Harte
c123ca1054 Slightly improves syntax. 2019-07-16 18:05:58 -04:00
Thomas Harte
9f0f35033d Introduces sector interleaving. 2019-07-16 18:05:40 -04:00
Thomas Harte
3633285aaa Ensures a trailing zero bit isn't dropped. 2019-07-16 16:36:00 -04:00
Thomas Harte
cb16790330 Improves qualifiers. 2019-07-15 22:40:45 -04:00
Thomas Harte
ca37fd8f4c Corrects tag preservation. 2019-07-15 17:15:06 -04:00
Thomas Harte
46b98dab70 Bumps up the amount of reserved storage. 
To avoid a reallocation when reading Mac data.
 2019-07-15 17:12:31 -04:00
Thomas Harte
0568996264 Fixes a couple of data arrangement issues on output. 2019-07-15 17:11:58 -04:00
Thomas Harte
5b05a9bc61 Extends Drive to report is_writing and so that writing works as the first action. 2019-07-12 18:53:41 -04:00
Thomas Harte
2c39229b13 Adds has-new-disk flag, allowing mounting of software from the desktop. 2019-07-12 13:17:24 -04:00
Thomas Harte
6c2cc206a6 Takes a first stab at write support for Macintosh disk images. 
Albeit that the Macintosh itself can't yet write.
 2019-07-11 18:09:37 -04:00
Thomas Harte
5a9f3cfc1e Completes Mac GCR decoding and its associated test. 2019-07-11 17:37:07 -04:00
Thomas Harte
8f28b33342 Starts work on Macintosh GCR decoding. 2019-07-11 16:28:52 -04:00
Thomas Harte
c4ab0bb867 Starts sketching out an interface for IWM drives, eliminating a dangling use of unsigned as it goes. 2019-07-10 16:05:59 -04:00
Thomas Harte
3f303511bd Adds cstring include, in support of memcpy. 2019-07-08 18:06:58 -04:00
Thomas Harte
b9c2c42bc0 Switches drives to using floats for time counting. 
Hopefully to eliminate a lot of unnecessary `Time` work; inaccuracies should still be within tolerable range.
 2019-07-02 15:43:03 -04:00
Thomas Harte
68a3e5a739 Renamed DiskCopy42 to MacintoshIMG, now that it's not just DiskCopy 4.2 files. 2019-06-18 14:32:58 -04:00
Thomas Harte
9730800b6a Adds support for raw sector dumps. 2019-06-18 14:14:25 -04:00
Thomas Harte
506276a2bd Corrected: use format tag as intended. 2019-06-18 14:04:28 -04:00
Thomas Harte
df56e6fe53 Fixed: the sector number also goes into sector bodies. 
Also the checksum is written in the other order, and the final byte of data isn't output.
 2019-06-18 10:34:10 -04:00
Thomas Harte
756641e837 Fixed: tags go first, then data. 2019-06-16 22:00:12 -04:00
Thomas Harte
05c2854dbc Makes at least some attempt at producing real disk tracks. 2019-06-16 21:17:24 -04:00
Thomas Harte
5c8aacdc17 Fixes the more obvious issues with GCR encoding: byte order, top bit selection. 2019-06-16 17:17:24 -04:00
Thomas Harte
fe0dc4df88 Starts building out some tests for Apple GCR encoding. 2019-06-15 22:48:24 -04:00
Thomas Harte
33f2664fe9 Makes a first attempt at Macintosh GCR encoding. 2019-06-15 22:29:02 -04:00
Thomas Harte
a17e47fa43 Apple's GCR header varies between the Mac and the Apple II. 2019-06-15 16:32:56 -04:00
Thomas Harte
877b46d2c1 Advances IWM/drive emulation very close to the point of 'Welcome to Macintosh'. 2019-06-15 16:08:54 -04:00
Thomas Harte
e9d0676e75 Fiddles further with the tachometer. 2019-06-06 21:36:19 -04:00
Thomas Harte
7591906777 Numerous IWM fixes: the machine now seems to be trying to measure the tachometer. 2019-06-06 18:32:11 -04:00
Thomas Harte
08671ed69c Fixes setting of a Time to a float. 2019-06-05 14:43:34 -04:00
Thomas Harte
511d292e73 Ensures gain noise is forgotten upon assumption of a new track. 2019-06-05 14:43:17 -04:00
Thomas Harte
833258f3d7 Sets things up to allow variable rotation rates, and especially Sony 800kb-style self-selecting rates. 2019-06-04 21:41:54 -04:00
Thomas Harte
b8a1553368 Adds putative support for PlusToo-style BIN files. 
Albeit a bit of a guess, since it's not intended to be an emulator file format.
 2019-06-04 21:41:09 -04:00
Thomas Harte
1033abd9fe Starts making some space for Macintosh-style GCR encoding. 2019-06-04 15:41:15 -04:00
Thomas Harte
881feb1bd3 Adds preliminary parsing of the Disk Copy 4.2 format. 2019-06-02 13:39:25 -04:00
Thomas Harte
d97348dd38 Eliminates dangling uses of printf. 2019-03-02 18:07:05 -05:00
Thomas Harte
9c8a2265b5 Breaks infinite loop where signature[0] == 0x1f but some of the rest doesn't match. 2019-03-02 14:47:52 -05:00
Thomas Harte
84d7157dfb Corrects arithmetic on raw data blocks. 2019-03-02 14:40:48 -05:00
Thomas Harte
ddce4fb46b Ensures that unexpected padding goes somewhere. 2019-03-02 14:35:16 -05:00
Thomas Harte
1ccee036c4 Switches complete logic behind CAS to wave conversion to parsing tape files. 2019-03-02 14:19:54 -05:00
Thomas Harte
10c98f0a15 Switches TapeUEF to using LOG. 
Reducing console noise for release builds.
 2019-02-02 22:30:10 -05:00
Thomas Harte
2ef6d4327c Resolves further build warnings. 2019-01-13 20:37:50 -05:00
Thomas Harte
cc95e587db Adds virtual destructors for various interface classes. 2019-01-13 19:19:01 -05:00
Thomas Harte
ee89be6730 Removes many stray spaces. 2018-11-23 22:32:32 -05:00
Thomas Harte
0d01346ad4 Advertises SMS support and goes as far as realising it needs to spawn a Master System. 2018-09-20 22:04:28 -04:00
Thomas Harte
36ff2105fb Updates C-style (bool) casts. 2018-09-11 20:37:15 -04:00
Thomas Harte
fc84ae611e Resolves various instances of spaces in place of tabs. 2018-09-09 20:33:56 -04:00
Thomas Harte
c73445199c Eliminates a couple of instances of manual memory management. 2018-09-09 20:29:58 -04:00
Thomas Harte
71ec7624ca Corrects Apple DSK track length, inter-track skew, and Pro-DOS volume number. 2018-08-27 20:56:25 -04:00
Thomas Harte
78c7137427 Avoids observer communication if motor status hasn't changed. 2018-08-03 21:11:22 -04:00
Thomas Harte
3f6944de54 Corrects custom info block parsing. 2018-07-11 22:21:35 -04:00
Thomas Harte
e8f847d288 Fixes CRC generator used to verify Acorn programs. 2018-07-10 20:01:31 -04:00
Thomas Harte
a0f817108e Minor style fix. 2018-07-10 20:01:11 -04:00
Thomas Harte
bfccadd356 Corrects comment typo. 2018-07-03 21:38:04 -04:00
Thomas Harte
5b3512f1df Attempts to pick an intelligent place to pad out tracks. 2018-07-03 20:10:22 -04:00
Thomas Harte
6e34e60f8a Ensures no data is dropped in transcribing a NIB to real track data. 2018-07-03 20:01:07 -04:00
Thomas Harte
abc5c50b2e Added some additional exposition. 2018-07-02 21:51:53 -04:00
Thomas Harte
1fcb461c42 Ensures that segments are written in a properly-circular fashion. 2018-07-02 19:35:49 -04:00
Thomas Harte
abca38a548 Makes an initial removal of PCMPatchedTrack. Farewell, old friend. 2018-07-01 22:49:57 -04:00
Thomas Harte
b4be2cd063 Implements PCMTrack::add_segment. Thereby completes PCMTrack::resampled_clone. 2018-07-01 18:28:25 -04:00
Thomas Harte
2d83eeb9c4 Further minor style improvements. 2018-07-01 17:59:43 -04:00
Thomas Harte
4d9e897cc3 Corrects addressing for deserialisation of bytes. 2018-07-01 15:58:56 -04:00
Thomas Harte
be664b5695 Ensures that start positions are properly related to sectors. 2018-07-01 15:53:48 -04:00
Thomas Harte
c3751066b7 Ensures segments are properly sized. 2018-07-01 15:43:31 -04:00
Thomas Harte
77feee8197 Applies minor style improvements. 2018-07-01 15:38:42 -04:00
Thomas Harte
f75af3b45e Adds some extra exposition. 2018-07-01 14:41:17 -04:00
Thomas Harte
1471a35bb8 Reserves a more appropriate amount of data. 2018-07-01 14:40:48 -04:00
Thomas Harte
555c2a4377 Makes a first sweep at converting the storage underlying PCMSegment to vector<bool>. 
This is to remove another pain point, in preparation for the work immediately forthcoming but also work as-yet unknown.
 2018-07-01 12:05:41 -04:00
Thomas Harte
16bef0dcd5 Starts the movement towards a world without PCMPatchedTrack. 2018-06-30 20:03:18 -04:00
Thomas Harte
62eef8cb40 Reinstates proper ready behaviour. 2018-06-18 21:35:39 -04:00
Thomas Harte
27657fcde0 Adds necessary header for assert. 2018-06-10 21:02:19 -04:00
Thomas Harte
e0b75b6e3d Corrects logic for avoiding overwrite. 2018-06-09 21:47:51 -04:00
Thomas Harte
a694844190 Moves gap 1 into proper ownership. 2018-06-09 17:28:08 -04:00
Thomas Harte
28f2d331a8 Switches to more realistic gaps. 2018-06-09 13:06:45 -04:00
Thomas Harte
dde9b73a22 Creates the through-path that will be necessary for RWTS acceleration. 2018-06-09 12:51:53 -04:00
Thomas Harte
744c35b617 Caps the number of sync bytes inserted at five. 2018-06-06 21:52:26 -04:00
Thomas Harte
9ac21a4e71 Switches to ignoring the byte count, trusting the bit count entirely. 2018-06-06 21:51:55 -04:00
Thomas Harte
db8d8d8404 Commutes Sleeper to ClockingHint::Source, making state more granular. 2018-05-27 23:17:06 -04:00
Thomas Harte
20843305dd Removes unused calculation of vars. 2018-05-27 13:31:30 -04:00
Thomas Harte
8f6c0f6a8d Eliminates vars test. 
At least Humpty Dumpty is a working .p that doesn't satisfy the test.
 2018-05-26 19:05:35 -04:00
Thomas Harte
d45231c1a8 Introduces an additional validation test. 
Thereby satisfying the TODO.
 2018-05-25 18:40:15 -04:00
Thomas Harte
772812b35f Corrects improper textual reference to interface names. 2018-05-25 18:31:20 -04:00
Thomas Harte
f443fd44b5 Introduces support for writing NIBs. 2018-05-25 18:30:55 -04:00
Thomas Harte
79c60b8984 Adds necessary import for memcpy. 2018-05-24 21:58:50 -04:00
Thomas Harte
523ca3264b Implements write support for WOZ files. 2018-05-24 21:44:31 -04:00
Thomas Harte
8f78e5039e Factors out track seeking. 2018-05-24 18:45:00 -04:00
Thomas Harte
57ee6d4e41 Merge branch 'master' into WOZWriting 2018-05-23 22:32:30 -04:00
Thomas Harte
2868b1eca7 Adds missing import for memcpy. 2018-05-23 22:31:35 -04:00
Thomas Harte
ca4bc92c33 Adds WOZ CRC checking. 2018-05-23 22:22:17 -04:00
Thomas Harte
853261364e Generalised CRC generation and created specific subclasses for the CCITT CRC16 and CRC32. 2018-05-23 22:21:57 -04:00
Thomas Harte
4952657b31 Factors out physical to logical sector conversion. 2018-05-19 22:59:59 -04:00
Thomas Harte
46fae1a761 Corrected: now maps in the proper direction. 2018-05-19 22:50:33 -04:00
Thomas Harte
a09fb01d71 Makes an attempt at write support for Apple DSK files. 2018-05-19 22:30:52 -04:00
Thomas Harte
7cee3b7449 Resolves potential overflow / sign corruption. 2018-05-19 22:28:29 -04:00
Thomas Harte
8263c48a1d Added a guarantee that the TrackSerialiser won't modify tracks it receives. 2018-05-18 23:03:28 -04:00
Thomas Harte
ed06533e60 Implements write support out of the Disk II. 2018-05-18 22:07:58 -04:00
Thomas Harte
7b7beb13a3 Eliminates the fiction of setting and getting registers. 
The Disk II seems lower level than that; it will read the data bus whenever it likes, it is the programmer's responsibility to keep up with that. It also reserves the right not to load the bus regardless of whether it receives a read or write access.
 2018-05-17 21:39:11 -04:00
Thomas Harte
85c4e009f3 Undoes reformatting error. 2018-05-14 20:03:32 -04:00
Thomas Harte
76802b5e38 Eliminates arc4random. 
It seems not to be as portable as I'd hoped.
 2018-05-14 20:01:20 -04:00
Thomas Harte
9f2f388e5a Ensures generation of random noise if too many zeroes exist on a disk surface. 2018-05-14 19:17:34 -04:00
Thomas Harte
7996040f35 Rejigs segment conjugation to avoid potential accidental empty byte. 2018-05-13 22:30:44 -04:00
Thomas Harte
0055efb720 Corrects failure of expression in track size expansion. 2018-05-13 22:29:36 -04:00
Thomas Harte
84ae2964fd Switches to explicit unicode entry points. 2018-05-13 16:02:46 -04:00
Thomas Harte
149b940f84 Commutes the pound sign to a proper unicode value. 2018-05-13 15:50:56 -04:00
Thomas Harte
7226d8d4f7 Eliminates all instances of µ. 2018-05-13 15:46:14 -04:00
Thomas Harte
ad9b0cd4e3 Eliminates all endashes. 2018-05-13 15:43:03 -04:00
Thomas Harte
5d6b5d9f10 Eliminates all emdashes in cross-platform code. 2018-05-13 15:34:31 -04:00
Thomas Harte
0b771ce61a Removes all instances of the copyright symbol. 2018-05-13 15:19:52 -04:00
Thomas Harte
3fdefb94e4 Removes requirement for correct sector epilogues. 
It's now a length test that at present accepts 6-and-2 sectors only.
 2018-05-12 23:03:08 -04:00
Thomas Harte
49592ebaf3 Ensures initialisation of scanner and that sectors overlapping the end of track are captured. 2018-05-12 18:42:07 -04:00
Thomas Harte
f410dcb3f3 Ensures proper test: not having a number of sectors that is a multiple of the track count. 2018-05-12 18:05:33 -04:00
Thomas Harte
0cb5362c6f Disambiguates whether Step will occur in addition to below zero/beyond maximum. 2018-05-11 21:44:08 -04:00
Thomas Harte
9089bf6535 Adds step events. 2018-05-10 21:58:14 -04:00
Thomas Harte
ef19a03efc Drives can now deliver activity events. 2018-05-10 21:54:10 -04:00
Thomas Harte
25f7e3af31 Removes dead debugging aid. What a klutz! 2018-05-09 22:24:20 -04:00
Thomas Harte
8ee34fafa6 Switches default DSK volume to 254. That seems to resolve Pravetz booting issues. 2018-05-09 20:28:58 -04:00
Thomas Harte
f65c65569a Makes disk head position explicitly something with sub-integral precision. 
Also as a drive-by fix, corrects accidental assumption of 10 sectors for all MFMSectorDump descendants.
 2018-05-06 23:17:36 -04:00
Thomas Harte
36f8b165cf Makes the epilogue test a bit more thorough. 2018-05-05 20:52:42 -04:00
Thomas Harte
1293d8b69e Corrects various indentation errors. 2018-05-05 19:32:20 -04:00
Thomas Harte
ba7fbc4032 Reroutes all Disk II types through the Disk II analyser and returns actual sector from the Apple GCR parser results. 2018-05-05 16:37:33 -04:00
Thomas Harte
c36d7b4972 Makes first attempt at 6 and 2 decoder. 2018-05-04 23:11:12 -04:00
Thomas Harte
0dece80b5d Improves documentation. 2018-05-04 18:02:55 -04:00
Thomas Harte
e3b4aebf1a Introduces the Disk II as a unique media target platform. 
As it makes a little more sense to analyse Apple GCR images to determine target platform than it does to have the potential platforms vote over them.

Also starts on the parser that'll be necessary for making a decision.
 2018-05-04 18:02:36 -04:00
Thomas Harte
2e20191c01 Relocates and cleans up what is currently written of Apple GCR handling as the encoder. 
A decoder will be forthcoming.
 2018-05-03 22:40:45 -04:00
Thomas Harte
fcc750784a Switches interleaving logic around: having inspected some NIBs sectors are numbered in order, but scatter read from the image. 2018-05-02 21:28:18 -04:00
Thomas Harte
3787d094ec Deals with potential precision pitfall. 2018-05-02 21:26:39 -04:00
Thomas Harte
4b4ea4a103 Corrects final two bytes of Apple GCR low nibble encoding. 2018-05-02 21:06:18 -04:00
Thomas Harte
5e34c1b6b8 Switches to producing a single segment for NIBs and DSKs. 
I've now seemingly verified that the values read back by the CPU are those I'm intending to produce, so I'm at a loss.
 2018-05-01 20:31:42 -04:00
Thomas Harte
f4097290c2 Made various corrections following a quick for-loop constness audit. 2018-04-30 22:23:57 -04:00
Thomas Harte
9da481b060 Slightly simplifies syntax. 2018-04-30 22:08:51 -04:00
Thomas Harte
79002d6962 Adds an additional assert. 2018-04-30 22:07:54 -04:00
Thomas Harte
dbd9282efc Experimentally switches to doubles for TimedEventLoop time tracking. 2018-04-30 22:07:17 -04:00
Thomas Harte
10c0e687f5 Attempts to introduce sleeping for the Disk II. 2018-04-29 17:51:10 -04:00
Thomas Harte
a9d4fe0b41 Introduces filetype wiring for DO and PO files. 
Also corrects sector numbering logic to ensure there is a sector 15.
 2018-04-29 16:34:10 -04:00
Thomas Harte
5cd15147eb Introduces interleaving of sector numbers. 2018-04-29 16:18:14 -04:00
Thomas Harte
c62db6665a Corrects storage of lower two bit pairs. 
It turns out the non-integral result of 256/3 is handled differently than my guess.
 2018-04-29 11:20:23 -04:00
Thomas Harte
fabcb261dc Corrects data prologue usage and off-by-one error in checksum placement. 2018-04-28 23:17:06 -04:00
Thomas Harte
45cf28e0eb Corrects sync lengths. 2018-04-28 15:48:49 -04:00
Thomas Harte
5b35c88be2 Corrections: data segments now correctly announce their number of bits, and tracks aren't oversized. 2018-04-28 15:47:50 -04:00
Thomas Harte
7f03f5d02f Makes a first attempt at six-and-two encoding for DSKs. 2018-04-28 15:18:48 -04:00
Thomas Harte
b98d5b790a Finally unifies disk image file exceptions, and adds a placeholder for Apple DSK. 2018-04-27 23:18:45 -04:00
Thomas Harte
5c74044e62 Unifies constants. 2018-04-27 21:38:08 -04:00
Thomas Harte
992a99d792 Improves validation of suspected sync regions. 2018-04-27 19:53:35 -04:00
Thomas Harte
41075356e2 Makes a first attempt at NIB support. 2018-04-26 22:49:07 -04:00
Thomas Harte
d59db504a3 Adjusted stepper logic; some disks load now. 2018-04-25 21:59:18 -04:00
Thomas Harte
c90e122eb2 Switches casts around to avoid potential undefined behaviour of left-shifting signed numbers. 2018-04-25 19:59:32 -04:00
Thomas Harte
4c6dc597f4 Converts Time::get into a template, introduces a via-a-double fallback for the timed event loop. 2018-04-25 19:54:39 -04:00
Thomas Harte
376b26c1e4 Simplifies the rotational multiplier upon construction, to mitigate against scale issues later. 2018-04-24 20:16:14 -07:00
Thomas Harte
7061537ff5 Makes joined-up attempt to run data through the Disk II. 2018-04-24 19:44:45 -07:00
Thomas Harte
4cbe5068a9 Works further towards NIB, but still isn't close. 2018-04-23 20:01:12 -07:00
Thomas Harte
38b2302b59 Corrects minor documentation errors. 2018-04-23 19:59:19 -07:00
Thomas Harte
bce0702745 Makes some faulty steps further towards providing Apple GCR assistance. 2018-04-23 19:59:03 -07:00
Thomas Harte
d447e81abd Adds provisional support for WOZ files. 2018-04-23 19:57:45 -07:00
Thomas Harte
6592745e53 Adds the bare minimum to respond to attempts to open NIB files with an Apple II. 2018-04-21 21:21:57 -07:00