Thomas Harte
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c304db0f5a
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Deintegrated the busy flag and the interrupt request line, as the latter is reset by status reads. Which also means I can start reporting the WD INTRQ line status directly from the Microdisc. That appears to be correct, rather than honouring the Microdisc IRQ select there.
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2016-12-06 21:16:29 -05:00 |
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Thomas Harte
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ca50606e1d
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Restored Vic audio.
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2016-12-03 17:10:47 -05:00 |
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Thomas Harte
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36bc558798
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Converted all 'Components' to postfix underscores.
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2016-12-03 10:51:09 -05:00 |
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Thomas Harte
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81ee834530
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As well as a bunch of logging, reinstated rotation position preservation across tracks.
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2016-12-02 18:36:47 -05:00 |
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Thomas Harte
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93c573bfa9
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Implemented missing status bits (other than the index hole), and a head loading delay for the Microdisc.
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2016-12-01 21:13:16 -05:00 |
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Thomas Harte
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0a0775c3bd
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Removed earlier hacky solution.
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2016-12-01 20:16:11 -05:00 |
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Thomas Harte
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442986ee2c
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Introduced a head loading path for 1793 machines.
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2016-12-01 20:12:22 -05:00 |
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Thomas Harte
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82899f2f47
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Ensured flag setting is atomic, removed duplication of interrupt request versus busy, found better names for the personality testers, unified delegate protocol.
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2016-12-01 07:41:52 -05:00 |
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Thomas Harte
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b31fd11470
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Fixed reporting of data request line, initial status values.
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2016-11-30 22:39:55 -05:00 |
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Thomas Harte
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2222cb65d6
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Split the status up into flags, assembled into a register upon demand. Attempted to implement some of the differences between the 1770/1772 and 1773/1793. Albeit with a motor fix still in place.
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2016-11-30 22:26:02 -05:00 |
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Thomas Harte
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84cb07613d
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Checked some documentation more thoroughly; the 1793 has quite different spin-up (/head load) semantics. So it's another distinct personality. Grrr.
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2016-11-27 20:39:08 -08:00 |
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Thomas Harte
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02ba1f220f
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The '72 seems to be a '70 with altered timing. So worth differentiating.
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2016-11-27 21:06:17 +08:00 |
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Thomas Harte
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2c01f9dbed
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Added meaningful TODOs.
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2016-11-27 08:42:39 +08:00 |
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Thomas Harte
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2f459690d4
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It would appear the 1770 and 1773 actually differ in relation to the (non-sensical) ability not to spin-up for a Type 2, and whether a side compare can occur. So the WD1770 class now requires a personality to be specified. Which it singly fails to honour.
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2016-11-26 23:29:30 +08:00 |
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Thomas Harte
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d8ecc52de8
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Temporarily disabled spin-down as harmful to the status register if following anything other than a Type 1 command.
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2016-11-26 22:27:20 +08:00 |
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Thomas Harte
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b9677c9927
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Consolidated interrupt request setting.
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2016-11-26 09:41:53 +08:00 |
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Thomas Harte
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d5f9e0aa3b
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Ensured there's no such thing as a zero-cycle operation, even if i don't yet know exactly what I should be doing.
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2016-11-25 21:24:25 +08:00 |
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Thomas Harte
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4af678d2ed
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Gave the Microdisc a clock signal, added just enough of force interrupt to avoid a spurious belief that a type 3 command has started.
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2016-11-25 20:51:39 +08:00 |
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Thomas Harte
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d4a1961378
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Added getters for the IRQ and DRQ lines plus a delegate to receive changes; adjusted code so that the two lines signal.
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2016-11-21 13:21:49 +08:00 |
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Thomas Harte
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7eeaac23e7
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Reversed myself. I once again do not think the clock is divided by 256 for envelopes.
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2016-11-11 20:31:48 -05:00 |
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Thomas Harte
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77987bf31e
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Decided to go with divide by 256 for the envelope counter after all.
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2016-11-09 21:51:56 -05:00 |
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Thomas Harte
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77ce200fbb
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Simplified/corrected AY tone/noise mixer logic, and made a new guess at the effect of reading registers that are smaller than 8 bits.
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2016-11-09 21:21:17 -05:00 |
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Thomas Harte
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fa65cc2058
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Resolved type conversion error.
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2016-11-05 12:57:01 -04:00 |
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Thomas Harte
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30c670f8de
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Ensured programmatic setting of the timers occurs during phase 2 _instead_ of counting.
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2016-11-04 21:30:18 -04:00 |
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Thomas Harte
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21604376e6
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Reintroduced clocking of the AY and boxed in the range of the master divider a little further.
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2016-10-30 22:51:08 -04:00 |
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Thomas Harte
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ad00304e8a
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Fixed 6522 countdown.
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2016-10-28 21:05:42 -04:00 |
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Thomas Harte
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4fab794747
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Added a direct-to-two-cycles emulation path for 6522 owners.
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2016-10-27 21:13:25 -04:00 |
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Thomas Harte
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2eda0b3c86
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Attempted to simplify the logic behind the most common 6522 usage.
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2016-10-27 21:06:31 -04:00 |
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Thomas Harte
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fd823dc222
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Settled on terminology.
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2016-10-23 20:42:49 -04:00 |
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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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