26 Commits

Author	SHA1	Message	Date
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	3c148f5721	Fixed clanger of an error.	2017-08-16 14:02:46 -04:00
Thomas Harte	360c8a99a3	Adjusted Atari2600 actually to use the nominated type of bus extender.	2017-08-16 12:57:32 -04:00
Thomas Harte	06e31f5102	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'.	2017-08-16 12:39:15 -04:00
Thomas Harte	42b5b66305	Remove the 6502's use of runtime polymorphism in favour of ordinary templating.	2017-08-16 11:56:52 -04:00
Thomas Harte	4abd62e62b	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.	2017-07-27 22:05:29 -04:00
Thomas Harte	279c369a1f	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.	2017-07-25 22:21:09 -04:00
Thomas Harte	d9c6b3bcf7	Corrected TIA's WSYNC lookahead to accept Cycles.	2017-07-25 22:13:41 -04:00
Thomas Harte	40339a12e1	Formalised the use of a cycles count with a divider, bringing a few additional plain-int users into the fold.	2017-07-25 07:15:31 -04:00
Thomas Harte	90bf6565d0	Reduced int/Cycle conversions in the Electron and on the Atari 2600, where the current framework makes it possible to do so.	2017-07-24 22:53:13 -04:00
Thomas Harte	2ff157cf7a	Switched CRTMachine over to use Cycles as an explicit statement of units, and followed through on the effects of that.	2017-07-22 22:17:29 -04:00
Thomas Harte	83628b285b	Experimentally turned the 6502 into a clock receiver. No problem encountered.	2017-07-22 21:52:21 -04:00
Thomas Harte	eb8a2de5d6	Settled definitively on flush as more communicative than synchronise (and slightly more locale neutral); culled some more duplication from the Z80.	2017-05-15 07:38:59 -04:00
Thomas Harte	0808e9b6fb	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.	2017-05-14 22:08:15 -04:00
Thomas Harte	a26b87f348	Fixed: mistake was failure to count ready cycles.	2017-03-20 20:44:03 -04:00
Thomas Harte	4c3cc42c91	This gives a very noisy version of the real audio.	2017-03-20 20:38:29 -04:00
Thomas Harte	f3f4e1a541	Made a first, hacky, attempt at audio.	2017-03-20 19:35:51 -04:00
Thomas Harte	4722f6b5c4	Fixed sprite disappearance: test should be applied predecrement, not post — it relates to the address being used this access, not the next one.	2017-03-19 18:58:35 -04:00
Thomas Harte	7d8d1c7828	Fixed 'random' number generator.	2017-03-19 18:54:35 -04:00
Thomas Harte	4bb70e7d31	Resetting the mask upon low byte write appears to resolve some issues.	2017-03-19 18:49:37 -04:00
Thomas Harte	321030bb44	Added a slightly faulty but seemingly 'close' version of masking.	2017-03-19 18:28:06 -04:00
Thomas Harte	6c161b1150	This gives something that might be the correct background.	2017-03-19 17:49:48 -04:00
Thomas Harte	d5c37c8619	Shushed a little, so as to be able to see a reasonable amount of output during my lifetime.	2017-03-19 17:38:54 -04:00
Thomas Harte	7c66c36d3f	Attempted at least to manage appropriate data storage.	2017-03-19 17:31:08 -04:00
Thomas Harte	031a68000a	Added a class to contain the Pitfall 2 pager and a skeleton of initial work.	2017-03-18 22:08:47 -04:00
Thomas Harte	c3d82f88a5	Tidied up and commented on the Activision stack implementation.	2017-03-18 21:01:58 -04:00