Thomas Harte
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b12f2f2796
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Switched to more straightforward version of two-step loop, dealing with my mistaken dealing of when _master_divider&15 == 0 upon entry without adding an extra sanity check. Am also temporarily on non-modulo logic for tone generation, for a profiling test.
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2016-10-23 20:32:48 -04:00 |
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Thomas Harte
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583db88299
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Added a dispatch queue-powered Apple implementation of the async task queue, removed any mention of skip_samples in the AY since it isn't implemented.
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2016-10-22 21:58:45 -04:00 |
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Thomas Harte
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33e628a096
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Made an attempt to eliminate what amounts to manual division.
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2016-10-21 22:16:44 -04:00 |
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Thomas Harte
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46a3c0922f
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Slightly simplified code, fixed divider.
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2016-10-21 22:12:44 -04:00 |
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Thomas Harte
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d7c0c49715
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Might as well be consistent with divider loads.
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2016-10-21 20:07:14 -04:00 |
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Thomas Harte
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782ef960e1
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Sought both to [start to] optimise the AY and correct divider reloads. It turns out that conditionals aren't that troubling. But I can probably eliminate the counters.
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2016-10-21 20:05:38 -04:00 |
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Thomas Harte
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cd59eb5f43
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Implemented non-linear volume.
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2016-10-19 23:07:51 -04:00 |
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Thomas Harte
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b59da7d4bc
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Added some documentation.
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2016-10-19 22:47:44 -04:00 |
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Thomas Harte
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08275c6241
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Fixed mixer IO bit usage.
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2016-10-19 22:22:15 -04:00 |
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Thomas Harte
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59162228ef
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Reduced mask for clarity.
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2016-10-19 22:14:05 -04:00 |
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Thomas Harte
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319d7c2b12
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Fixed premature wrapping of the envelope, played about with whether that should be subject to a predivision by 256. It feels unlikely?
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2016-10-19 22:12:51 -04:00 |
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Thomas Harte
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6073906c39
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Commented and fixed mistake that would equate any noise divider > 32768 with 0.
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2016-10-19 21:51:35 -04:00 |
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Thomas Harte
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101f168ea4
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Made an attempt to tidy up.
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2016-10-19 21:43:18 -04:00 |
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Thomas Harte
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ada37abe23
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Made an attempt to implement noise and envelopes. Not quite right yet.
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2016-10-19 21:13:22 -04:00 |
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Thomas Harte
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bd6e6674a0
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Fixed signed shift assumption and noise-related register test.
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2016-10-18 22:20:12 -04:00 |
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Thomas Harte
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9669a5ec9b
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Switched to a more authentic interfacing to the AY.
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2016-10-18 19:32:15 -04:00 |
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Thomas Harte
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43612e1ca2
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Made an attempt to eliminate conditionals (running before I can walk?) and started edging towards an envelope generator.
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2016-10-17 08:03:38 -04:00 |
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Thomas Harte
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9730e8247f
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Ensured propagation of synchronise messages, added enough to do plain tone. Probably. So: noise and envelopes missing. And it's all far too quiet.
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2016-10-15 21:04:21 -04:00 |
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Thomas Harte
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51bdac27ae
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Made some AY advances; it's now being polled for samples and collecting more information on what it needs to output.
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2016-10-15 17:45:39 -04:00 |
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Thomas Harte
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288d10c253
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Got some keyboard reaction.
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2016-10-14 21:44:15 -04:00 |
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Thomas Harte
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138eabcff4
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Continued in my effort to wire up a keyboard. Will need further to continue.
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2016-10-14 21:35:15 -04:00 |
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Thomas Harte
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d8e4c488c2
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Started iterating towards having an AY and a fully-working keyboard.
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2016-10-14 21:18:03 -04:00 |
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Thomas Harte
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922dd6a586
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Hit up the other two kinds of audio generator.
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2016-10-07 17:10:00 -04:00 |
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Thomas Harte
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79412dc84d
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Upped MFM clock cycles, switched back to using the typer for the ADFS and adjusted ADFS ROM slots.
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2016-09-28 21:28:34 -04:00 |
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Thomas Harte
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91235c7fd7
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Fixed issue whereby parts of data that merely looked like index or ID address marks within tracks caused a resynchronisation of the tokeniser.
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2016-09-27 07:36:37 -04:00 |
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Thomas Harte
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6330e5706c
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Fixed seek verify. First ADFS directory is visible.
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2016-09-25 21:44:46 -04:00 |
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Thomas Harte
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4db086949a
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Made an attempt to add MFM decoding to the 1770; ensured something is returned when reading the Plus 3 status register again.
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2016-09-25 21:38:52 -04:00 |
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Thomas Harte
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572d5587d9
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Made a first stab at enabling multi-disk machines and thereby obeying (some of) the Plus 3's status register.
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2016-09-25 21:24:16 -04:00 |
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Thomas Harte
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9bbcbd1001
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Renamed class, intending to turn a Disk::Drive into literally just that, and have a thing with a PLL that consumes events be a Controller.
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2016-09-25 20:05:56 -04:00 |
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Thomas Harte
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6084020ab3
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Added shift-break as a better way to boot suitable disks. Continued attempting to clean the 1770.
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2016-09-25 14:11:22 -04:00 |
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Thomas Harte
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a538b45213
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Sought to implement the verify step of type 1 commands.
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2016-09-25 09:54:49 -04:00 |
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Thomas Harte
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0918751802
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Fixed stepping out.
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2016-09-24 22:48:45 -04:00 |
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Thomas Harte
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9e1d4c8b01
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Fixed an initial setup error with seek.
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2016-09-24 22:43:12 -04:00 |
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Thomas Harte
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d50629e6aa
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This is clearly the winning solution. Edited down.
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2016-09-24 22:36:38 -04:00 |
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Thomas Harte
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07ff5138b7
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The catalogue now loads.
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2016-09-24 22:35:34 -04:00 |
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Thomas Harte
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1b69ad0fd4
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This attempts to implment sector reading. DFS reports an error.
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2016-09-24 22:29:02 -04:00 |
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Thomas Harte
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ce4100e5b9
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Fixed slots for DFS and ADFS to sideways RAM; continued working on the 1770 to get as far as trying to get the body of a sector.
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2016-09-24 22:04:54 -04:00 |
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Thomas Harte
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7154e8986e
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Fixed stepping delay.
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2016-09-24 20:16:23 -04:00 |
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Thomas Harte
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53522e28e2
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Performed an about-face on how this should probably be implemented. Now forsaking the state machine in favour of a macro'd switch-for-cooperative-event-based-messaging implementation. Let's see how this ends up looking.
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2016-09-24 20:12:45 -04:00 |
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Thomas Harte
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88bbeedad3
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Set actual bit length.
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2016-09-22 21:28:23 -04:00 |
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Thomas Harte
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75eb62b577
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One painful step at a time, this now starts the disk rotating and gets as far as deciding whether it's about to head off on a read or a write.
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2016-09-22 21:25:31 -04:00 |
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Thomas Harte
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8db0030068
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Fixed ROM loading by the Electron, turned the WD1770 into a 'disk drive' (it'll do for now), persuaded it to get all the way through a very specifically convenient type 1 command.
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2016-09-20 22:14:33 -04:00 |
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Thomas Harte
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7a34ae0da6
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This is the start of my slog through type 1 commands. I kind of need to figure out what I'm doing about drives and PLLs now though.
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2016-09-20 16:58:23 -04:00 |
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Thomas Harte
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3b97b038b9
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Corrected and sketched out state machine far enough to get to a complaint about unhandled work.
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2016-09-20 15:56:31 -04:00 |
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Thomas Harte
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a9e65e9b7a
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Tweaked disk side density, added call-outs to a WD1770 if the Electron had one (albeit without run_for_cycles yet as I need to figure out the clock rate), added a shell of the basic functions of the WD1770. No implementation yet.
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2016-09-19 22:06:56 -04:00 |
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Thomas Harte
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bcf91de7e9
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Declared support for the Acorn disk files, started hammering out an encoder.
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2016-09-18 13:35:54 -04:00 |
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Thomas Harte
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e3daf80564
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Added a file for the 1770, at least.
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2016-09-17 18:01:00 -04:00 |
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Thomas Harte
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eeec516fa6
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Implemented seeking on tapes, mucked about a bit more with the Commodore analyser, at least temporarily removed cropping from the Vic emulator.
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2016-09-11 17:09:00 -04:00 |
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Thomas Harte
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1541273785
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Moved responsibility for throwing in a low-pass filter up to the Vic, appropriately.
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2016-08-21 18:13:31 -04:00 |
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Thomas Harte
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c783090980
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It turns out that the Vic has a 1.6Khz low-pass filter. So added that.
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2016-08-21 12:13:41 -04:00 |
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