6 commits

Author	SHA1	Message	Date
Nebuleon Fumika	2b9a9dc05b	Decide whether SuperFX and SA-1 chips are enabled only once per frame. This saves a few million instructions per second. (Inspired by Snes9x-Euphoria)	2013-01-26 14:47:59 -05:00
Nebuleon Fumika	12c5afbe60	GLORIOUS interrupt-based sound playback. Now, the note-length-hopping problem isn't as apparent anymore, and automatic frame skipping doesn't go to 8 FPS all the time in Super Mario World. Thank the deities! ... Reverses the auto frameskip synchronisation from commit dac11c74ac, because that doesn't play well with interrupts.	2013-01-08 03:23:55 -05:00
Nebuleon Fumika	c01c25febe	Add support for user-selected and automatic frame skipping. Add support for PAL timings (20 ms per frame). ... User-selected frameskip causes slowdowns if the game runs slower than the resulting frame rate, but synchronises correctly if the game runs faster. Automatic frame skipping is still the default. It now only skips up to 8 frames, but in some games still skips that entire 8 frames. What's needed is an algorithm that averages frame latencies over a few seconds and skips while the latency is LOWER than the average.	2013-01-07 02:16:34 -05:00
Nebuleon Fumika	e5869adc44	Merge Registers structures into their respective CPUs to avoid additional memory addresses being loaded every opcode.	2012-12-26 14:42:02 -05:00
Nebuleon Fumika	a0d0c5e7a5	Eliminate the latency of button press recognition, which was bad enough to lose keys entirely sometimes, and could otherwise delay a button press or release by 200 ms. ... This was the entire reason I created the fork, and I finally did it! It syncs the controls every scanline of a frame, which costs about 60,000 MIPS instructions per frame to deal with. Luckily, the processor runs at 396 MHz, which means the cost of checking the controls is 1% of the CPU's power.	2012-12-21 03:50:10 -05:00
Kitty Draper	d40ae99422	first commit	2011-03-05 21:39:25 -05:00