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Commit Graph

2966 Commits

Author SHA1 Message Date
Thomas Harte
fa19e2d9c2 Removes some detritus. 2017-08-24 22:00:21 -04:00
Thomas Harte
95d360251d Makes all of PartialMachineCycle const, with the exception of the target of *value, since that's intended to be writeable by recipients. 2017-08-24 21:32:33 -04:00
Thomas Harte
7af3de010e Suspected my mode 1 interrupt timing might be off. Reminded myself of the sources. Persuaded myself that it wasn't. Added appropriate comments. 2017-08-23 22:25:31 -04:00
Thomas Harte
cefd421992 Merge pull request #218 from TomHarte/6845Factored
Refactors the 6845 to make end-of-line and end-of-frame conditions more explicit and to reduce repetition
2017-08-22 22:21:17 -04:00
Thomas Harte
a914eadc85 Ensured that register 6 is checked on every loop. 2017-08-22 22:17:45 -04:00
Thomas Harte
131b340d75 Dodges a lambda copy. 2017-08-22 21:55:10 -04:00
Thomas Harte
e956740c56 Refactors the 6845 more clearly to break out the acts of ending a line and ending a frame, changing the way the memory address is altered — the end-of-line value is provisionally stored and then used if necessary — in order to do so. 2017-08-22 21:54:48 -04:00
Thomas Harte
8afd83b91f Merge pull request #217 from TomHarte/CompiletimeOptions
Introduces compile-time selection of minor CPU core features and applies forceinline when appropriate
2017-08-21 22:29:24 -04:00
Thomas Harte
40d7a603db Ensured that forceinline does nothing in debug builds. 2017-08-21 22:04:15 -04:00
Thomas Harte
ee71be0e7e Added the option not to include ready line support in the 6502 core, and took advantage of it in the Electron, Oric and Vic-20 implementations. Also tagged those as forceinline and/or override final where applicable. 2017-08-21 21:56:42 -04:00
Thomas Harte
cde29c4bf4 Added forceinlines and properly declared finals and overrides. 2017-08-21 21:07:10 -04:00
Thomas Harte
e1aded0d95 Allows Z80 users to opt out of support for the bus request line. Which both now do. 2017-08-21 20:43:12 -04:00
Thomas Harte
1237f174fe Merge pull request #216 from TomHarte/NoiseReduciton
Cleans up issues affecting the sleeper mechanism and the CPC
2017-08-20 13:26:56 -04:00
Thomas Harte
0cbc1753b9 Quick fixes: the binary tape player now considers talk to the sleep observer only if motor control changes. The Amstrad CPC no longer attempts to use the component argument to identify the caller, since this will often be that of the superclass and not that of the derived class known to the CPC. 2017-08-20 13:18:46 -04:00
Thomas Harte
5cf0395936 Merge pull request #215 from TomHarte/Z80BusReq
Removes repeated checking of bus_request_line_ by the Z80.
2017-08-20 12:40:37 -04:00
Thomas Harte
6315c22b80 Removed repeated checking of bus_request_line_. It's now checked only after each outward perform_machine_cycle. 2017-08-20 12:39:45 -04:00
Thomas Harte
4614a56843 Merge pull request #214 from TomHarte/Sleeper
Experimentally introduces the concept of a 'sleeper' — a component that will volunteer to be unclocked for a period
2017-08-20 12:29:32 -04:00
Thomas Harte
8f5ae4a326 The CPC now responds to tape-originating sleeper observations. 2017-08-20 12:21:02 -04:00
Thomas Harte
8fdc5012e4 Updated TapePlayer and BinaryTapePlayer to be sleepers. 2017-08-20 12:18:36 -04:00
Thomas Harte
e88a51e75e Worked logic all the way down to the CPC. If the 8272 announces that it is asleep, it is now no longer clocked. Also very slightly cut down on IRQ line chatter to the Z80. 2017-08-20 12:05:00 -04:00
Thomas Harte
49285e9caa Attempted to implement Sleeper in Drive and therefore in DiskController. Also corrected a couple of nonconformant file names. 2017-08-20 11:54:54 -04:00
Thomas Harte
e3f2118757 Merge branch 'master' into Sleeper 2017-08-20 10:58:03 -04:00
Thomas Harte
daeaa4752f Merge pull request #213 from TomHarte/MinorPalette
Makes a variety of minor performance improvements to the CPC
2017-08-20 10:57:41 -04:00
Thomas Harte
5344e3098b Minor: made has_disk something that is decided on insertion/deletion. 2017-08-20 10:55:08 -04:00
Thomas Harte
cedb809c21 Sketched out a protocol designed to save processing time on anything that may sleep — probably just disk controllers for now but one can easily imagine it being applicable to printers, and possibly sound chips with suitable changes in guarantee for sound packet receivers. 2017-08-20 10:53:25 -04:00
Thomas Harte
2d9efccc98 Introduced a master 'is sleeping' flag. I'm starting to think there's a pattern forming here. 2017-08-20 10:43:53 -04:00
Thomas Harte
8ce46b6e49 Having spotted that I was using my single-character loop counter names incorrectly (quelle surprise!), got a bit more explicit. Also flattened into a single loop so that I can break rather than returning. 2017-08-20 10:32:09 -04:00
Thomas Harte
f2699a3f2b Okay, even if releasing it is unsafe, I can at least move the typer so that it is no longer called. 2017-08-20 10:24:01 -04:00
Thomas Harte
85253a5876 Sought further to reduce the processing footprint of palette changes by updating only those table entries that are affected by a change. 2017-08-20 10:13:23 -04:00
Thomas Harte
911ee5a0d3 At least added a fast return. 2017-08-19 22:22:51 -04:00
Thomas Harte
57c5b38a6d Step one towards cutting much of this cost: build only the table that's appropriate for the current mode, and at least declare when a more minimal change would be sufficient. 2017-08-19 22:19:46 -04:00
Thomas Harte
669e0caff5 Ensured the head_unload_delay values are properly seeded, and generalised the quick escape. 2017-08-19 22:06:56 -04:00
Thomas Harte
b24d04fc09 Merge pull request #212 from TomHarte/MFMParserDensity
Improves the variability of the MFM parser used for static analysis
2017-08-18 15:57:37 -04:00
Thomas Harte
ef07c33741 Merge branch 'Plus10' into MFMParserDensity 2017-08-18 15:48:20 -04:00
Thomas Harte
e559a65ede Ideally I would be able to kill this multiplier, as it could easily be derived at runtime. But, for now, just turned it up so that the analysis-oriented parser is better at parsing different bit rates. 2017-08-18 15:47:46 -04:00
Thomas Harte
5bdd24d93f Merge pull request #211 from TomHarte/HFE
Introduces support for the HFE file format.
2017-08-17 22:43:23 -04:00
Thomas Harte
af61a7fa28 Two quick fixes: correctly set segment size, and flip bytes to match HFE's bit ordering to PCMTrack's. 2017-08-17 22:28:00 -04:00
Thomas Harte
c8c1792c3f Made a first attempt at HFE support. 2017-08-17 22:20:02 -04:00
Thomas Harte
e6683e7f2d Added the base skeletal stuff of HFE support. 2017-08-17 21:48:48 -04:00
Thomas Harte
0c1714b695 Relaxed a little to allow +10% in track length. 2017-08-17 21:36:14 -04:00
Thomas Harte
dc0ca83003 Merge pull request #210 from TomHarte/TrackSize
Various MFM and DSK fixes
2017-08-17 15:50:27 -04:00
Thomas Harte
2c2dd8073c Modified to return nullptr if asked for an extended disk image track that doesn't exist. 2017-08-17 15:32:24 -04:00
Thomas Harte
4f8b89772e Improved logic for detecting when all sense has been derived from a track to spot any repeated track, not necessarily the first one. That avoids sectors that run over the index hold and obscure the first throwing things. 2017-08-17 15:31:53 -04:00
Thomas Harte
733ee5a5c3 Ensured no attempt to put a null track into the cache 2017-08-17 15:30:02 -04:00
Thomas Harte
fedf5a44a6 Imposes a maximum track length. 2017-08-17 15:20:49 -04:00
Thomas Harte
6a09022896 Merge pull request #209 from TomHarte/BootOnly
Generalises: an acceptable boot sector is always acceptable
2017-08-17 14:29:37 -04:00
Thomas Harte
5b3c707959 Generalised: an acceptable boot sector is acceptable even if no valid CP/M catalogue is found anywhere. 2017-08-17 14:28:16 -04:00
Thomas Harte
9b21ef1507 Merge pull request #208 from TomHarte/SpecialCharacters
Improves the CPC static analyser's correct file name predictions
2017-08-17 13:25:30 -04:00
Thomas Harte
da3e8655e9 Withdrew some caveman debugging nonsense. 2017-08-17 13:25:19 -04:00
Thomas Harte
41e4386164 Added another "one thing is different" test: one thing has a different file name. Also decided to right-time the type (/extension) as well as the file name. 2017-08-17 13:21:48 -04:00