Thomas Harte
|
ad00304e8a
|
Fixed 6522 countdown.
|
2016-10-28 21:05:42 -04:00 |
|
Thomas Harte
|
4fab794747
|
Added a direct-to-two-cycles emulation path for 6522 owners.
|
2016-10-27 21:13:25 -04:00 |
|
Thomas Harte
|
2eda0b3c86
|
Attempted to simplify the logic behind the most common 6522 usage.
|
2016-10-27 21:06:31 -04:00 |
|
Thomas Harte
|
fd823dc222
|
Settled on terminology.
|
2016-10-23 20:42:49 -04:00 |
|
Thomas Harte
|
b12f2f2796
|
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.
|
2016-10-23 20:32:48 -04:00 |
|
Thomas Harte
|
583db88299
|
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.
|
2016-10-22 21:58:45 -04:00 |
|
Thomas Harte
|
33e628a096
|
Made an attempt to eliminate what amounts to manual division.
|
2016-10-21 22:16:44 -04:00 |
|
Thomas Harte
|
46a3c0922f
|
Slightly simplified code, fixed divider.
|
2016-10-21 22:12:44 -04:00 |
|
Thomas Harte
|
d7c0c49715
|
Might as well be consistent with divider loads.
|
2016-10-21 20:07:14 -04:00 |
|
Thomas Harte
|
782ef960e1
|
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.
|
2016-10-21 20:05:38 -04:00 |
|
Thomas Harte
|
cd59eb5f43
|
Implemented non-linear volume.
|
2016-10-19 23:07:51 -04:00 |
|
Thomas Harte
|
b59da7d4bc
|
Added some documentation.
|
2016-10-19 22:47:44 -04:00 |
|
Thomas Harte
|
08275c6241
|
Fixed mixer IO bit usage.
|
2016-10-19 22:22:15 -04:00 |
|
Thomas Harte
|
59162228ef
|
Reduced mask for clarity.
|
2016-10-19 22:14:05 -04:00 |
|
Thomas Harte
|
319d7c2b12
|
Fixed premature wrapping of the envelope, played about with whether that should be subject to a predivision by 256. It feels unlikely?
|
2016-10-19 22:12:51 -04:00 |
|
Thomas Harte
|
6073906c39
|
Commented and fixed mistake that would equate any noise divider > 32768 with 0.
|
2016-10-19 21:51:35 -04:00 |
|
Thomas Harte
|
101f168ea4
|
Made an attempt to tidy up.
|
2016-10-19 21:43:18 -04:00 |
|
Thomas Harte
|
ada37abe23
|
Made an attempt to implement noise and envelopes. Not quite right yet.
|
2016-10-19 21:13:22 -04:00 |
|
Thomas Harte
|
bd6e6674a0
|
Fixed signed shift assumption and noise-related register test.
|
2016-10-18 22:20:12 -04:00 |
|
Thomas Harte
|
9669a5ec9b
|
Switched to a more authentic interfacing to the AY.
|
2016-10-18 19:32:15 -04:00 |
|
Thomas Harte
|
43612e1ca2
|
Made an attempt to eliminate conditionals (running before I can walk?) and started edging towards an envelope generator.
|
2016-10-17 08:03:38 -04:00 |
|
Thomas Harte
|
9730e8247f
|
Ensured propagation of synchronise messages, added enough to do plain tone. Probably. So: noise and envelopes missing. And it's all far too quiet.
|
2016-10-15 21:04:21 -04:00 |
|
Thomas Harte
|
51bdac27ae
|
Made some AY advances; it's now being polled for samples and collecting more information on what it needs to output.
|
2016-10-15 17:45:39 -04:00 |
|
Thomas Harte
|
288d10c253
|
Got some keyboard reaction.
|
2016-10-14 21:44:15 -04:00 |
|
Thomas Harte
|
138eabcff4
|
Continued in my effort to wire up a keyboard. Will need further to continue.
|
2016-10-14 21:35:15 -04:00 |
|
Thomas Harte
|
d8e4c488c2
|
Started iterating towards having an AY and a fully-working keyboard.
|
2016-10-14 21:18:03 -04:00 |
|
Thomas Harte
|
922dd6a586
|
Hit up the other two kinds of audio generator.
|
2016-10-07 17:10:00 -04:00 |
|
Thomas Harte
|
79412dc84d
|
Upped MFM clock cycles, switched back to using the typer for the ADFS and adjusted ADFS ROM slots.
|
2016-09-28 21:28:34 -04:00 |
|
Thomas Harte
|
91235c7fd7
|
Fixed issue whereby parts of data that merely looked like index or ID address marks within tracks caused a resynchronisation of the tokeniser.
|
2016-09-27 07:36:37 -04:00 |
|
Thomas Harte
|
6330e5706c
|
Fixed seek verify. First ADFS directory is visible.
|
2016-09-25 21:44:46 -04:00 |
|
Thomas Harte
|
4db086949a
|
Made an attempt to add MFM decoding to the 1770; ensured something is returned when reading the Plus 3 status register again.
|
2016-09-25 21:38:52 -04:00 |
|
Thomas Harte
|
572d5587d9
|
Made a first stab at enabling multi-disk machines and thereby obeying (some of) the Plus 3's status register.
|
2016-09-25 21:24:16 -04:00 |
|
Thomas Harte
|
9bbcbd1001
|
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.
|
2016-09-25 20:05:56 -04:00 |
|
Thomas Harte
|
6084020ab3
|
Added shift-break as a better way to boot suitable disks. Continued attempting to clean the 1770.
|
2016-09-25 14:11:22 -04:00 |
|
Thomas Harte
|
a538b45213
|
Sought to implement the verify step of type 1 commands.
|
2016-09-25 09:54:49 -04:00 |
|
Thomas Harte
|
0918751802
|
Fixed stepping out.
|
2016-09-24 22:48:45 -04:00 |
|
Thomas Harte
|
9e1d4c8b01
|
Fixed an initial setup error with seek.
|
2016-09-24 22:43:12 -04:00 |
|
Thomas Harte
|
d50629e6aa
|
This is clearly the winning solution. Edited down.
|
2016-09-24 22:36:38 -04:00 |
|
Thomas Harte
|
07ff5138b7
|
The catalogue now loads.
|
2016-09-24 22:35:34 -04:00 |
|
Thomas Harte
|
1b69ad0fd4
|
This attempts to implment sector reading. DFS reports an error.
|
2016-09-24 22:29:02 -04:00 |
|
Thomas Harte
|
ce4100e5b9
|
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.
|
2016-09-24 22:04:54 -04:00 |
|
Thomas Harte
|
7154e8986e
|
Fixed stepping delay.
|
2016-09-24 20:16:23 -04:00 |
|
Thomas Harte
|
53522e28e2
|
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.
|
2016-09-24 20:12:45 -04:00 |
|
Thomas Harte
|
88bbeedad3
|
Set actual bit length.
|
2016-09-22 21:28:23 -04:00 |
|
Thomas Harte
|
75eb62b577
|
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.
|
2016-09-22 21:25:31 -04:00 |
|
Thomas Harte
|
8db0030068
|
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.
|
2016-09-20 22:14:33 -04:00 |
|
Thomas Harte
|
7a34ae0da6
|
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.
|
2016-09-20 16:58:23 -04:00 |
|
Thomas Harte
|
3b97b038b9
|
Corrected and sketched out state machine far enough to get to a complaint about unhandled work.
|
2016-09-20 15:56:31 -04:00 |
|
Thomas Harte
|
a9e65e9b7a
|
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.
|
2016-09-19 22:06:56 -04:00 |
|
Thomas Harte
|
bcf91de7e9
|
Declared support for the Acorn disk files, started hammering out an encoder.
|
2016-09-18 13:35:54 -04:00 |
|