Thomas Harte
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6be46ae921
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Mostly restores Atari 2600 output. PAL colours need work.
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2018-11-29 18:26:05 -08:00 |
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Thomas Harte
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be01203cc1
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Starts to expand the range of supported 6502s.
This fully implements the NES 6502 because, well, it's virtually no extra work, and ensures that RDY takes effect on write cycles on 65C02s.
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2018-08-13 22:17:22 -04:00 |
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Thomas Harte
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76a73c835c
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Forces 6502 consumers to declare which model — the original, 65C02 or 65SC02.
All present machines use a regular 6502.
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2018-08-06 20:06:07 -04:00 |
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Thomas Harte
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5d6b5d9f10
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Eliminates all emdashes in cross-platform code.
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2018-05-13 15:34:31 -04:00 |
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Thomas Harte
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0b771ce61a
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Removes all instances of the copyright symbol.
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2018-05-13 15:19:52 -04:00 |
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Thomas Harte
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1100dc6993
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Opens up .bin and .rom to all cartridge platforms, and adds a confidence estimate to the Atari 2600.
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2018-03-07 14:26:07 -05:00 |
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Thomas Harte
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ac80d10cd8
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Separates the component parts of running an audio stream: task deferral, filtering and generation.
Walking towards improving opportunities for composition.
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2017-12-17 21:26:06 -05:00 |
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Thomas Harte
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5aef81cf24
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Commutes cross-platform #pragma marks to //MARK:s.
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2017-11-12 15:59:11 -05:00 |
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Thomas Harte
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2e15fab651
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Doubles down on <cX> over <X.h> for C includes, and usage of the namespace for those types and functions.
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2017-11-11 15:28:40 -05:00 |
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Thomas Harte
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4cbc87a17d
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Corrects out-of-order initialisations for the 1770, Atari 2600 joystick, Pitfall II bus extender, Microdisc and 6502.
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2017-11-10 22:20:44 -05:00 |
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Thomas Harte
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e983854e71
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Converts all uint8_t and uint16_t casts to the functional style.
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2017-10-21 21:50:53 -04:00 |
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Thomas Harte
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edb9fd301c
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Begins this project's conversion to functional-style casts.
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2017-10-03 22:04:15 -04:00 |
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Thomas Harte
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ee71be0e7e
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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.
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2017-08-21 21:56:42 -04:00 |
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Thomas Harte
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3c148f5721
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Fixed clanger of an error.
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2017-08-16 14:02:46 -04:00 |
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Thomas Harte
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360c8a99a3
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Adjusted Atari2600 actually to use the nominated type of bus extender.
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2017-08-16 12:57:32 -04:00 |
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Thomas Harte
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06e31f5102
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Consequential to the 6502 change, severs the Atari 2600's cartridge container from its former attempt at runtime polymorphism, in favour of each cartridge's specific hardware being defined as a 'bus extender'.
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2017-08-16 12:39:15 -04:00 |
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Thomas Harte
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42b5b66305
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Remove the 6502's use of runtime polymorphism in favour of ordinary templating.
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2017-08-16 11:56:52 -04:00 |
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Thomas Harte
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4abd62e62b
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Standardises on const [Half]Cycles as the thing called and returned, rather than const [Half]Cycles & as it's explicitly defined to be only one int in size, so using a reference is overly weighty.
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2017-07-27 22:05:29 -04:00 |
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Thomas Harte
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279c369a1f
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Switched to Cycles as the result from the 6502 perform_bus_operation, helping slightly to clarify what you're intended to return and reducing type jumping within the 6502 implementation.
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2017-07-25 22:21:09 -04:00 |
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Thomas Harte
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d9c6b3bcf7
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Corrected TIA's WSYNC lookahead to accept Cycles.
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2017-07-25 22:13:41 -04:00 |
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Thomas Harte
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40339a12e1
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Formalised the use of a cycles count with a divider, bringing a few additional plain-int users into the fold.
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2017-07-25 07:15:31 -04:00 |
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Thomas Harte
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90bf6565d0
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Reduced int/Cycle conversions in the Electron and on the Atari 2600, where the current framework makes it possible to do so.
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2017-07-24 22:53:13 -04:00 |
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Thomas Harte
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2ff157cf7a
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Switched CRTMachine over to use Cycles as an explicit statement of units, and followed through on the effects of that.
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2017-07-22 22:17:29 -04:00 |
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Thomas Harte
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83628b285b
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Experimentally turned the 6502 into a clock receiver. No problem encountered.
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2017-07-22 21:52:21 -04:00 |
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Thomas Harte
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eb8a2de5d6
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Settled definitively on flush as more communicative than synchronise (and slightly more locale neutral); culled some more duplication from the Z80.
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2017-05-15 07:38:59 -04:00 |
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Thomas Harte
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0808e9b6fb
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Pulled the 6502 into a CPU namespace, making it an instance of something that has micro-opcodes and schedules them, and factoring out the formulation of a register pair.
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2017-05-14 22:08:15 -04:00 |
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Thomas Harte
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a26b87f348
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Fixed: mistake was failure to count ready cycles.
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2017-03-20 20:44:03 -04:00 |
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Thomas Harte
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4c3cc42c91
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This gives a very noisy version of the real audio.
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2017-03-20 20:38:29 -04:00 |
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Thomas Harte
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f3f4e1a541
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Made a first, hacky, attempt at audio.
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2017-03-20 19:35:51 -04:00 |
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Thomas Harte
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4722f6b5c4
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Fixed sprite disappearance: test should be applied predecrement, not post — it relates to the address being used this access, not the next one.
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2017-03-19 18:58:35 -04:00 |
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Thomas Harte
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7d8d1c7828
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Fixed 'random' number generator.
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2017-03-19 18:54:35 -04:00 |
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Thomas Harte
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4bb70e7d31
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Resetting the mask upon low byte write appears to resolve some issues.
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2017-03-19 18:49:37 -04:00 |
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Thomas Harte
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321030bb44
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Added a slightly faulty but seemingly 'close' version of masking.
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2017-03-19 18:28:06 -04:00 |
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Thomas Harte
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6c161b1150
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This gives something that might be the correct background.
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2017-03-19 17:49:48 -04:00 |
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Thomas Harte
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d5c37c8619
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Shushed a little, so as to be able to see a reasonable amount of output during my lifetime.
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2017-03-19 17:38:54 -04:00 |
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Thomas Harte
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7c66c36d3f
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Attempted at least to manage appropriate data storage.
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2017-03-19 17:31:08 -04:00 |
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Thomas Harte
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031a68000a
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Added a class to contain the Pitfall 2 pager and a skeleton of initial work.
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2017-03-18 22:08:47 -04:00 |
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Thomas Harte
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c3d82f88a5
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Tidied up and commented on the Activision stack implementation.
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2017-03-18 21:01:58 -04:00 |
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