Thomas Harte
a424e867f9
Continues factoring this apart, albeit with a decision on whether to retain update-and-output still pending.
2020-04-25 23:07:40 -04:00
Thomas Harte
f52b40396a
Re-ups output level.
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Though it's still quiet compared to the SN.
2020-04-25 23:07:06 -04:00
Thomas Harte
cd2ab70a58
Moves the LFSR to the LowFrequencyOscillator.
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Possibly I should come up with a better name for that?
2020-04-25 22:21:42 -04:00
Thomas Harte
65a3783dd2
Attempts the tom tom.
2020-04-25 19:21:55 -04:00
Thomas Harte
b9b5c2a3bc
Takes a first run at proper slot mixing and the bass drum.
2020-04-25 18:01:05 -04:00
Thomas Harte
12c618642e
Corrects output range.
2020-04-25 00:07:58 -04:00
Thomas Harte
6ebc93c995
Switches to maximum-rate multiplexing. Hopefully to eliminate the mixer as a consideration for now.
2020-04-24 23:50:06 -04:00
Thomas Harte
6d4e29c851
Strips mixer back to basics in search of audio issues.
2020-04-24 23:32:02 -04:00
Thomas Harte
b3979e2fda
Looking towards rhythm mode, and in search of bugs: factors out ADSR.
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Further factorings to come.
2020-04-24 18:48:32 -04:00
Thomas Harte
983c32bf75
Adds vibrato.
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This would complete melodic output, subject to bug fixes.
2020-04-24 18:02:41 -04:00
Thomas Harte
9e3614066a
Adds tremolo support, switches to global timer for ADSR stages other than attack.
2020-04-23 23:55:49 -04:00
Thomas Harte
c7ad6b1b50
Minor layout and commenting improvements.
2020-04-21 23:35:48 -04:00
Thomas Harte
676dcf7fbb
Calculates the proper key scale rate, though ADSR itself is still lacking that precision.
2020-04-21 22:57:56 -04:00
Thomas Harte
50d725330c
Adds missing header.
2020-04-21 22:48:52 -04:00
Thomas Harte
2886dd1dae
Collapses key-level scaling to a single 2d table.
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I dare imagine I can do better; the columns in particular look like arithmetic progressions.
2020-04-21 20:19:02 -04:00
Thomas Harte
40424ac38b
Re-enables key-level scaling, with 3db and 1.5db the correct way around.
2020-04-21 20:10:40 -04:00
Thomas Harte
a4d3865394
Decreases sustain level attenuation; disables key-level scaling for now.
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The latter was definitely wrong, I also think I don't need the big four tables.
2020-04-21 19:58:40 -04:00
Thomas Harte
bdce1c464a
Takes a shot at key-level scaling. Testing to come.
2020-04-21 00:09:42 -04:00
Thomas Harte
475d75c16a
Preserves fractional part of modulator phase.
2020-04-20 23:35:37 -04:00
Thomas Harte
32fd1897d0
Via a unit test, confirms and fixes relative volumes of OPLL channels.
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Also rejigs responsibility for scaling to emulator-standard volume.
2020-04-20 23:17:29 -04:00
Thomas Harte
f19fd7c166
Pulls out common melodic update calls.
2020-04-20 18:58:31 -04:00
Thomas Harte
100fddcee1
Corrects divider, takes another whack at ADSR.
2020-04-20 18:58:10 -04:00
Thomas Harte
99fa86a67e
Adds a test for lookup sine. And fixes lookup sine.
2020-04-20 18:40:47 -04:00
Thomas Harte
6568c29c54
Improves commentary.
2020-04-19 22:42:25 -04:00
Thomas Harte
c54bbc5a04
Rename Table.h; LogSin -> LogSign and make it a bit more typer.
2020-04-19 13:33:17 -04:00
Thomas Harte
92d0c466c2
Moves complete phase -> output calculation inside Operator.
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Reasoning being: otherwise I wasn't currently enforcing non-sine waveforms.
2020-04-19 13:27:24 -04:00
Thomas Harte
020c760976
Simplifies the phase counter.
2020-04-19 00:30:14 -04:00
Thomas Harte
cdfd7de221
Minor: enables all melodic channels when rhythm mode is disabled; supports non-modulated channels.
2020-04-18 17:48:29 -04:00
Thomas Harte
3da2e91acf
Adjusts range of output, makes declaration of level full owner of type information.
2020-04-17 23:29:09 -04:00
Thomas Harte
3948304172
Attempts to use table-based maths.
2020-04-17 23:23:16 -04:00
Thomas Harte
4a295cd95e
Wraps log_sin in an access function to enshrine sign and mask rules; switches both functions to non-math.h clashing names.
2020-04-17 23:22:42 -04:00
Thomas Harte
6f7c8b35c5
Applies an ahead-of-time transformation to the exp table, and wraps it in a helper function.
2020-04-17 22:33:13 -04:00
Thomas Harte
e58ba27c00
Clarifies meaning of scaling. Though it isn't yet applied.
2020-04-17 22:30:10 -04:00
Thomas Harte
0aceddd088
Starts tidying up the OPL2.
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This is as a precursor to switching to using the proper table lookups, which I hope will automatically fix my range issues.
2020-04-15 22:10:50 -04:00
Thomas Harte
30ff399218
With some fixes for scale, I think possibly this is close for melodic channels.
2020-04-15 21:27:27 -04:00
Thomas Harte
a7e63b61eb
Just from printing numbers: corrects transition from attack to decay.
2020-04-15 00:26:01 -04:00
Thomas Harte
b13b0d9311
Starts towards implementing some OPL test cases.
2020-04-14 23:51:45 -04:00
Thomas Harte
d8380dc3e2
Tries to be a little neater in spelling out the work here.
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I think I'm somewhat circling here now; I need to think of a way of getting clean comparison data.
2020-04-14 21:55:42 -04:00
Thomas Harte
d805e9a8f0
Actually, octave probably works this way around? Higher octaves = higher frequencies.
2020-04-14 21:39:12 -04:00
Thomas Harte
aa45142728
Endeavours to fix attenuation and add FM synthesis.
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I now definitely think my frequency counting is wrong.
2020-04-14 18:32:06 -04:00
Thomas Harte
09d1aed3a5
Attempts to voice the current attenuation (and, therefore, the ADSR output), even if linearly rather than logarithmically.
2020-04-13 22:12:55 -04:00
Thomas Harte
a1f80b5142
Takes a stab at per-operator ADSR.
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Heavy caveats apply: no KSR is applied, non-ADSR attenuation isn't applied, attenuation isn't voiced in general.
2020-04-13 21:39:06 -04:00
Thomas Harte
d3fbdba77c
Add missing #include.
2020-04-12 14:20:02 -04:00
Thomas Harte
632d797c9d
Adjusts frequency formula. This could be close.
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I guess next I need to get ADSR/volume in general working, before I can go FM? Then I'll worry about using the proper log-sin/exp tables.
2020-04-12 14:15:09 -04:00
Thomas Harte
559a2d81c1
Baby step: starts trying to output the raw FM carrier, no modulation, no ADSR.
2020-04-12 12:46:40 -04:00
Thomas Harte
7a5f23c0a5
Adds accommodations for the OPLL.
2020-04-10 22:05:22 -04:00
Thomas Harte
84b115f15f
Attempts to move forward in defining what the parts of an OPL are meant to do.
2020-04-10 19:13:52 -04:00
Thomas Harte
a0d14f4030
Starts trying to make sense of the various fields at play.
2020-04-08 23:15:44 -04:00
Thomas Harte
dd6769bfbc
Splits OPLL and OPL2 classes.
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Logic is: they have different mixers (additive in the OPL2, time-division multiplexing in the OPLL) as well as different register sets. So I'll put operator and channel logic directly into those structs.
2020-04-07 23:15:26 -04:00
Thomas Harte
db4b71fc9a
Adds correct LSFR, something of OPLL -> OPL2 logic.
2020-04-05 22:57:53 -04:00
Thomas Harte
0ed7d257e1
Add some extra notes, implement correct mapping to only 18 operators. Not 22.
2020-04-05 14:32:55 -04:00
Thomas Harte
335a68396f
Attempts to complete OPL2 register decoding.
2020-04-04 23:39:09 -04:00
Thomas Harte
84cdf6130f
Starts at least trying to decode OPL2 register writes.
2020-04-04 23:29:25 -04:00
Thomas Harte
b0abc4f7bb
Implements enough wiring that the Master System will instantiate and talk to an OPLL.
2020-04-03 20:05:36 -04:00
Thomas Harte
a7e1920597
Restores ColecoVision runtime options.
2020-03-18 00:06:52 -04:00
Thomas Harte
394ee61c78
Starts a switch to reflectable-style runtime options.
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The Amstrad CPC and ZX80/81 have made the jump so far, subject to caveats. The macOS build is unlikely currently to work properly.
2020-03-16 23:25:05 -04:00
Thomas Harte
545a6177bb
Makes CompoundSource mono/stereo-aware.
2020-02-16 18:45:36 -05:00
Thomas Harte
50d356be2f
Ensures all audio sources, including compound sources, announce whether they're stereo correctly.
2020-02-16 18:31:45 -05:00
Thomas Harte
9835e800ec
Fixed: individual audio generators now either are or are not stereo. The speaker acts accordingly.
2020-02-16 18:28:03 -05:00
Thomas Harte
337cb4fb86
Resolves implicit type conversion warnings.
2020-02-16 14:05:23 -05:00
Thomas Harte
f760a68173
Corrects stereo audio generation.
2020-02-16 00:19:49 -05:00
Thomas Harte
89d6b85b83
Adds optional stereo output for the AY.
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The real chip provides the three tone channels as separate outputs, so a variety of different mixings can exist.
2020-02-15 18:09:17 -05:00
Thomas Harte
e02d109864
Nudges the LowpassSpeaker towards supporting stereo generation.
2020-02-15 18:03:12 -05:00
Thomas Harte
dde672701f
Merge pull request #755 from TomHarte/ExpliticLambdas
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Tries to be less lazy with lambda captures.
2020-02-15 12:38:12 -05:00
Thomas Harte
9ca2d8f9f2
Tried to be less lazy with lambda captures.
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This is primarily defensive.
2020-02-14 23:39:08 -05:00
Thomas Harte
763159a6f6
More neatly ties volume level 0 to silence.
2020-02-14 23:16:10 -05:00
Thomas Harte
6810a6ee58
Adjusts the AY volume scale.
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Hopefully more accurately to model the real thing.
2020-02-14 22:51:20 -05:00
Thomas Harte
294e09f275
All these 'override's can be 'final's.
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At least for the purpose of being communicative. I doubt there's much to gain in terms of compiler output — the DiskImageHolder can avoid some virtual lookups but nothing else leaps out.
2020-01-23 22:57:51 -05:00
Thomas Harte
9d97a294a7
Corrects the TMS' get_scaled_scan_status.
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I think all platforms are now returning credible numbers.
2020-01-22 19:34:10 -05:00
Thomas Harte
a71c5946f0
Ensures proper manipulation of scan_statuses, leading to the correct result out of a CRTMachine.
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Possibly with the exception of the TMS, as I appear to have uncovered an unrelated issue there.
2020-01-21 22:28:25 -05:00
Thomas Harte
d97a073d1b
Adds the necessary routine for all machines to be able to respond to get_scan_status.
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They all just as the CRT, as all are currently based on the CRT. Which doesn't currently know the total clock rate it would need to in order properly to scale the answer to the question. Further thought coming.
2020-01-20 21:45:10 -05:00
Thomas Harte
c755411636
Slightly improves comments.
2020-01-19 20:05:22 -05:00
Thomas Harte
d674fd0e67
The WD uses only the low two bits for sector size.
2020-01-18 13:40:50 -05:00
Thomas Harte
aac3d27c10
Adds activity indicators for the BD-500 and Jasmin.
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Also slightly cleans up DiskController a little further.
2020-01-15 23:39:15 -05:00
Thomas Harte
2d233b6358
Makes a more concrete attempt at track/sector combination.
2020-01-12 22:18:31 -05:00
Thomas Harte
6a44936a7c
Ensures programmatic volume level 0 is completely off.
2020-01-05 22:44:52 -05:00
Thomas Harte
c1bae49a92
Standardises on read and write for bus accesses.
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Logic being: name these things for the bus action they model, not the effect they have.
2020-01-05 13:40:02 -05:00
Thomas Harte
153f60735d
Banishes redefined macro warning.
2020-01-01 12:38:30 -05:00
Thomas Harte
e59de71d79
Disables status logging, at least until next needed.
2019-12-24 21:44:50 -05:00
Thomas Harte
4205e95883
Switches to capture of the track 0 flag during a type 1 operation.
2019-12-24 21:43:20 -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
42926e72cc
Adjusted: Flag::WriteProtect works in real time for a type-1 status.
2019-12-24 19:57:12 -05:00
Thomas Harte
80cb06eb33
It provisionally seems as though spin_up should be reset by a force interrupt?
2019-12-24 19:37:37 -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
ac604b30f3
Eliminates dangling static_casts in favour of construction.
2019-12-22 20:59:20 -05:00
Thomas Harte
b035b92f33
Corrects accidental use of sector contents as addresses in multi-sector reads and writes.
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As a secondary defect, this was also causing erroneous CRC error reports.
2019-12-22 19:58:02 -05:00
Thomas Harte
d25b48878c
Cleans up READ_ID macro, inter alia.
2019-12-22 17:58:33 -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
57ce10418f
Switches prescale logic, the better to deal with changes in prescaler.
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According to my assumptions about the behaviour, anyway.
2019-12-20 23:33:14 -05:00
Thomas Harte
2a1520c04e
Removes mostly-uninformative piece of logging.
2019-12-19 22:58:28 -05:00
Thomas Harte
45a391d69e
Increases quantity of annotations.
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I'm now at almost 500 lines, and I haven't even really written anything yet.
2019-12-18 22:57:12 -05:00
Thomas Harte
15bc18b64f
Merge branch 'master' into FurtherSCC
2019-12-18 22:17:10 -05:00
Thomas Harte
206ab380c7
Introduces double-resolution envelopes for the Atari ST.
2019-12-18 22:03:02 -05:00
Thomas Harte
d85ae21b2f
Adds an explicit declaration of chip type to all AY users.
2019-12-18 19:28:41 -05:00
Thomas Harte
7d9bedf7de
Merge branch 'master' into FurtherSCC
2019-12-17 22:39:39 -05:00
Thomas Harte
c2646a415f
Switch to faster timer implementation; it seems to work.
2019-12-09 19:23:08 -05:00
Thomas Harte
7cd11ecb7f
Adds necessary #include for assert.
2019-12-08 22:43:39 -05:00
Thomas Harte
acfe2c63b8
Adds an assert to verify the interrupt line is clear after a full reset.
2019-12-08 22:34:19 -05:00
Thomas Harte
b192381928
Implements a fuller reset, takes a run at the overran flag.
2019-12-08 21:20:06 -05:00
