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170 Commits

Author SHA1 Message Date
Jeff Epler
0aed615ee5 Fix crash when reading disks written on real apple2 
`readRaw8` throws an exception if you run out of data. This did not
turn up during my testing, because I was reading back a disk written by
fluxengine, so everything was aligned to the index pulse and no sector
ever straddled a revolution. On a "real" apple2-written disk, this was
not the case.

Incidentally, the "extra 0" problem exists on a real apple2-written
floppy as well.
 2022-03-07 22:40:33 -06:00
Jeff Epler
79eec41bcd Revamp how extra zeros are handled 
It's not OK to call seek() here. Instead, add a function which can read
an apple 8-bit flux value in terms of readRaw8 and readRawBits. Apply
this function to all the data bytes, rather than just the first one.
 2022-03-02 07:45:24 -06:00
Jeff Epler
d90fcbf7ad Handle extra 0-bits at the start of a sector 2022-03-02 07:43:45 -06:00
Jeff Epler
c4e4520058 apple2 decoder: explain the progression of sector status values 2022-03-02 07:43:43 -06:00
Jeff Epler
87cb4b6d18 Add apple2 encoder 
This is tested with encodedecodetest.sh but is not tested on HW yet.
It's likely that the sector order (interleave) doesn't match real systems.
 2022-02-28 16:22:53 -06:00
Howard M. Harte
d028db1ba3 northstar: Improve decode a little more. 
seekToPattern() can skip the index hole if it doesn't find the
SYNC pattern.  If this happens too close to the end of the flux
stream, it can result in a conflicted sector.  In this case,
discard the sector.
 2022-02-25 22:08:57 -08:00
Howard M. Harte
2d4e2b87bc micropolis: Improve decode a little more. 
seekToPattern() can skip the index hole if it doesn't find the
SYNC pattern.  If this happens too close to the end of the flux
stream, it can result in a conflicted sector.  In this case,
discard the sector.
 2022-02-25 21:59:18 -08:00
David Given
eade2e279e Make the internal disk data structures all const, to allow us to pass them to 
the GUI UI thread safely.
 2022-02-24 22:46:10 +01:00
Howard M. Harte
8d04d17e39 Fix override warnings in decoders. 2022-02-22 22:45:39 -08:00
David Given
48414f0ce9 Merge pull request #467 from davidgiven/logging 
Miscellaneous minor fixes
 2022-02-22 22:53:19 +00:00
David Given
548e07ce17 Fix off-by-one error in the MX decoder. 2022-02-22 22:51:14 +01:00
Howard M. Harte
8cbef669b1 northstar: Fix after decoder change. 
Recent changes to the decoders broke North Star.
 2022-02-21 13:34:34 -08:00
Howard M. Harte
d69944dd8c Micropolis: Add support for MZOS checksum. 
Vector MZOS uses a different sector checksum than the standard
Micropolis checksum used by MDOS, CP/M and OASIS.  Automatically
detect the checksum on the disk by default, but allow the user
to force the use of a specific checksum using the
--decoder.micropolis.checksum_type parameter.
 2022-02-19 14:10:56 -08:00
Howard M. Harte
a25111e411 Micropolis: Improve decode. 
* Discard a partial sector at the end of the track.
    * Do not seek to the index mark for the first sector.
    * Use a 64-bit pattern to match the SYNC.
    * If SYNC is found too early, search for a subsequent SYNC.
    * While decoding the sector record, enforce the SYNC pattern
      and track ID.
 2022-02-19 14:10:44 -08:00
Howard M. Harte
6866d5d3fa Require 16 sectors for Micropolis disks. 2022-02-19 14:10:35 -08:00
David Given
0d7de7bbc0 Add support for ignoring certain sectors (needed for FastCopy disks on the 
Atari ST).
 2022-02-16 22:02:50 +01:00
David Given
f6b1d9c493 Fix a regression in the MX decoder. 2022-02-12 23:37:20 +01:00
David Given
c539debc84 Fix the Amiga decoder, which got broken with the decoder change. Also fix the 
encoder which was always broken (but Amigas apparently didn't care).
 2022-02-12 22:42:15 +01:00
David Given
e8d1c90182 Fix, hopefully, the rest of the decoders. 2022-02-12 15:02:42 +01:00
David Given
0933dc1afa Partially complete rework of all the decoders to avoid seeking inside the 
fluxmap. This requires resetting the FluxDecoder, which loses any pending
state, resulting in bad reads for (some) formats which don't have gaps between
sectors --- the DVK MX is the main victim.
 2022-02-12 00:55:09 +01:00
David Given
84e997949f Merge. 2022-02-06 22:14:11 +01:00
David Given
89688394f8 Replace the upgradefluxfile builtin with a seperate upgrade-flux-file tool. 
This allows us to remove all the SQL stuff from the main program, and restores
the ability to upgrade from version 2 SQL files.
 2022-02-04 21:27:24 +01:00
Eric Anderson
bd854d29a4 Merge branch 'master' into micropolis-275 2021-12-29 12:39:07 -06:00
David Given
ccf5d513d2 Merge from master. 2021-12-12 19:49:32 +00:00
David Given
b15fd05e8d Add support in the IBM decoder for trackdata protos, and then configure the IBM 
profiles to know about which sectors it should see in the result image to allow
retries if sectors aren't found.
 2021-12-11 12:17:32 +01:00
David Given
3d1ee7a43e Don't spin in an infinite loop if the decoder tries to find a data record and 
the matcher fails to find anything, leaving the seek point unchanged.
 2021-12-10 19:56:00 +00:00
Howard M. Harte
4a91a35799 Fix the North Star decoder after the PLL upgrade. 2021-12-06 17:55:54 -10:00
dg
36c2263675 Fix the Micropolis decoder after the PLL upgrade. 2021-12-06 22:20:18 +00:00
dg
ebb5c17be4 Make the IBM format gap fill byte configurable. 2021-12-05 16:43:45 +00:00
David Given
709e300960 More typo fixing. 2021-12-05 17:17:03 +01:00
dg
18d90c44dd Rework the flux decoders to add a desync opcode for separating multiple reads 
in a flux stream. Finally add a unit test for the flux decoder.
 2021-12-05 14:42:57 +00:00
David Given
91f04e36e9 Bash the Victor9K encoder into producing images that look almost plausible. 2021-12-03 23:39:06 +01:00
David Given
1fbcf4aa5f More Victor9K encoder. 2021-12-03 22:04:25 +01:00
David Given
b412d54998 Do the framework and hopefully a lot of the maths of the Victor 9K encoder. 2021-11-27 23:38:57 +01:00
David Given
b7ee513dfd Set up the config for the Victor 9000 format. 2021-11-27 20:49:36 +01:00
David Given
3795abc19e Add the Victor9k boilerplate. 2021-11-27 19:44:53 +01:00
David Given
2cbe39e553 Fix bugs to make the IBM decoder work again. 2021-11-26 21:17:58 +01:00
David Given
2fe1ffeaf1 Add an ignore_track_byte setting. 2021-11-03 14:15:51 +01:00
Eric Anderson
ce5fcaf172 Micropolis raw 275 byte sectors 
These are used by formats like VGI since the ECC varied per machine and
the 10 extra bytes of user data may contain useful information.
 2021-10-02 22:59:14 -07:00
Eric Anderson
41e9c46cba Port Micropolis encoder to protobuf-based config 2021-10-02 16:24:38 -07:00
Eric Anderson
c54de27503 Merge branch 'master' into micropolis-write 
Let's not act like this actually compiles.
 2021-10-02 12:45:56 -07:00
David Given
42cacb18bd Lots of warning fixes. Can we switch to C++ 2A? 2021-08-04 20:29:04 +02:00
David Given
4f4ed1307f Merge from master. 2021-08-01 19:42:04 +02:00
David Given
00fc4e3890 Merge from master. 2021-08-01 19:26:39 +02:00
David Given
44c51f1246 Don't crash when given a missing sector. 2021-08-01 13:56:51 +02:00
David Given
86d49d563e Write the correct values to the sector headers! 2021-08-01 13:30:26 +02:00
David Given
9a12b651f9 Remember to wire up the tids990 encoder. 2021-07-31 00:44:07 +02:00
David Given
9fa631acca Fix the Brother encoder. 2021-07-31 00:42:25 +02:00
David Given
c81c1926c0 Wire up the encode/decode tests. Hey, look, failures! 2021-07-31 00:38:13 +02:00
David Given
29e8c99b4f Hopefully get the imagereader/imagewriter and IBM encoder/decoders using sector 
IDs.
 2021-07-29 00:02:46 +02:00