David Given
64694580cd
Remember to bump the protocol number after the bytecode change.
2020-04-03 21:46:51 +02:00
David Given
deaab94494
Merge pull request #146 from davidgiven/sixbit
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Switch to a simplified encoding with a six-bit timer.
2020-04-03 00:45:21 +02:00
David Given
1509e1f89d
Document the new bytecode format.
2020-04-03 00:38:20 +02:00
David Given
29e1ddc2ff
Bytecode upgrades always produce the latest version; we don't want to upgrade
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1->2->3 (although that specific case is harmless, by accident).
2020-04-03 00:36:55 +02:00
David Given
1fe6434563
Something is wrong with the IBM PC writer, I don't know what. Mark it as a
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dinosaur again.
2020-04-03 00:27:12 +02:00
David Given
0367b7e77d
Merge from trunk.
2020-04-01 00:06:35 +02:00
David Given
e6da85bf64
Merge pull request #145 from davidgiven/writereport
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Add a machine readable read report.
2020-04-01 00:04:54 +02:00
David Given
cd19fcdadd
The CSV report now writes records for every sector in the output map, even the
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missing ones.
2020-03-31 00:14:23 +02:00
David Given
1954f02cfb
Don't reset the device on startup because it confuses Linux.
2020-03-30 22:23:18 +01:00
David Given
39b23200b0
Fix missing flag dependency.
2020-03-29 23:12:12 +02:00
David Given
0644d6d965
Remove some stray tracing (which was causing problems). Fix a potential problem
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where sampleclock posedges could be lost in the sequencer.
2020-03-29 23:11:53 +02:00
David Given
a075694d8e
Rewrite the sequencer to work with the new six bit bytecode. Fiddle with the
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USB stuff a lot in an attempt to resolve the weird packet loss issue.
2020-03-29 15:10:35 +02:00
David Given
b1ea5a9a35
Rework the writer to use a fluxsink rather than just writing stuff directly.
2020-03-29 15:08:45 +02:00
David Given
00087cbb6b
Fix a catastrophic DMA setup bug which was causing (probably) every other byte
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of data to be mixed up with every other byte... but as every other byte was a
0x80 we never noticed up until now.
2020-03-20 00:06:58 +01:00
David Given
1b48ea20c4
Remove the cruncher.
2020-03-20 00:06:07 +01:00
David Given
3d0f019fc4
Replace the sampler with one using the new simplified bytecode.
2020-03-19 23:39:23 +01:00
David Given
a08bfc183f
Display the tick value along with each interval in the histogram.
2020-03-19 22:16:07 +01:00
David Given
c5aef9b051
Annotate inspect to display USB bandwidth.
2020-03-15 13:47:17 +00:00
David Given
fc2655ecd6
Rework the bytecode format to use a much simplified setup: a six-bit timer with
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the top two bits reserved for pulse and index state. This is actually smaller,
bandwidth-wise, than the old version, and may be smaller than the crunched
version.
2020-03-14 18:58:43 +00:00
David Given
a737c723d3
Make sure to update before installing packages.
2020-03-14 14:47:04 +00:00
David Given
37aa8b62b0
Add a --write-csv=X option to the reader to dump the sector status map as a
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machine-readable file.
2020-03-14 14:35:19 +00:00
David Given
a401173f6d
Teach the Amiga decoder how many sectors to expect on each track.
2020-03-09 12:54:29 +00:00
David Given
ce76dc4279
Merge pull request #140 from davidgiven/sectors
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Fix a couple of annoying but minor issues
2020-02-28 00:08:11 +01:00
David Given
1025bd857b
Don't crashloop if the USB's not connected, as it causes the drives to be
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constantly reprobed (which runs the motor).
2020-02-27 22:32:27 +01:00
David Given
025802b2d0
Count required sectors correctly on mac disks.
2020-02-27 22:30:05 +01:00
David Given
adbcb2cd31
Merge pull request #139 from davidgiven/sectors
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Add support for required sectors, drive autodetection and fix homing on 8" drives.
2020-02-24 21:55:27 +01:00
David Given
c47a563790
Don't seek to track -1 on homing (it appears to upset 8" drives). Detect which
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drives are present, so that if only a single drive is attached then it's always
track 0, regardless of which connector it's on.
2020-02-24 21:47:40 +01:00
David Given
04c09d1a5b
Hopefully, fix the problem where ^Cing a job gets the board in a confused
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state.
2020-02-21 22:16:20 +01:00
David Given
323da8272a
Hopefully add support for giving the reader a set of required sectors, so if
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one is missing then we can tell and the track can be reread.
2020-02-21 22:14:44 +01:00
David Given
38700c79fc
Merge pull request #137 from davidgiven/docs
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Update documentation.
2020-02-20 00:32:19 +01:00
David Given
d504d1890a
Remember to document that you need a FDD cable.
2020-02-20 00:30:17 +01:00
David Given
d53e757cfb
Rework some of the Brother documentation.
2020-02-20 00:25:55 +01:00
David Given
4983239458
Rework the hardware and software documentation.
2020-02-20 00:17:16 +01:00
David Given
376985828a
Add the ditaa pinout table.
2020-02-19 23:49:43 +01:00
David Given
dce0a26820
Merge pull request #136 from davidgiven/ibm
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Finally add write support for IBM disks.
2020-02-18 23:20:57 +01:00
David Given
14e0a67e7d
IBM write support gets the much vaunted unicorn.
2020-02-18 23:10:09 +01:00
David Given
1656947764
Disable write precompensation, as it actually seems to make things worse.
2020-02-18 22:49:12 +01:00
David Given
647862cdbd
Update the firmware for the new cruncher.
2020-02-18 22:13:41 +01:00
David Given
4a8d83838c
Add IBM write support documentation.
2020-02-18 22:12:56 +01:00
David Given
8acf8e181d
Rework the crunch encoding to be, hopefully, smaller and use less bandwidth for
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HD disks.
2020-02-18 21:37:32 +01:00
David Given
2df9920209
Rename test bulktransport to test bandwidth; avoid watchdog failures while the
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bandwidth test is running.
2020-02-18 19:12:52 +01:00
David Given
1a6c6b5420
The bandwidth tester now tests bandwidth in both directions. It looks like my
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default USB port only gets about 500kB/s write bandwidth. However, when plugged
into a port with 850kB/s, I still get underrun errors...
2020-02-17 23:58:40 +01:00
David Given
edc56d44d6
Non-functioning archive checkin: You can only have 120-odd DMA buffers, so my
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last 'fix' was in fact non-functional.
2020-02-17 23:28:40 +01:00
David Given
ef4eff0195
So writing now works, but only if USB DMA is enabled. But that breaks reading.
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I've worked round this in a simple but brute force manner and it now looks as
if reading *and* writing work, more or less. There does still seem to be the
odd bad sector when writing 1440kB disks.
2020-02-17 21:41:01 +01:00
David Given
df8d45bf66
Rework the output fifo to be a bit more correct about the sync signals, which
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in turn allows the sequencer to lose less time --- this gets the effective
clock rate down to about 1.01us. However we still seem to lose the last sector
on 18-sector disks and there are some disk reads so something is still wrong.
2020-02-17 00:13:13 +01:00
David Given
89a27619ff
Correctly propagate MFM encoding state.
2020-02-15 21:47:01 +01:00
David Given
387a86969a
Some verilog optimisations which shave off a few p-terms.
2020-02-15 12:15:51 +01:00
David Given
acb5059d17
Rewrite the sampler *again* to, hopefully, be more stable and not lose ticks.
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Luckily, we have just enough space in the FPGA to use an actual logic counter,
which simplifies things hugely.
2020-02-15 12:09:19 +01:00
David Given
a4002d2617
Fix a few encoder issues; but while 720kB disks work fine in a real machine,
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1440kB disks don't.
2020-02-14 22:47:15 +01:00
David Given
a63a90bbd0
Only attempt to remove the old file on overwrite if it actually exists.
2020-02-14 22:30:46 +01:00
