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Change way timing is handled #263

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rtoumazet opened this issue May 17, 2023 · 1 comment

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enhancement main

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rtoumazet commented May 17, 2023

Change from vsync driven to timer driven (like in Mame)
Links to check :

https://www.reddit.com/r/EmuDev/comments/hgyigv/precision_timing_strategies_in_emulators/
https://aarongiles.com/mamemem/part6.html
https://wiki.mamedev.org/index.php/Timers_and_timing
https://wiki.mamedev.org/index.php/CPU_Scheduling_in_MAME
coroutines (c++20)
using std::chrono to get a ns precision

Needs to be analysed and expanded

rtoumazet added enhancement main labels

rtoumazet added this to Backlog

github-project-automation bot moved this to Needs triage in Backlog

rtoumazet moved this from Needs triage to Low priority in Backlog

Owner Author

rtoumazet commented Jun 9, 2023 •

edited

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List of events to handle

Type	Event
Interrupt	VBlankIn
Interrupt	VBlankOut
Interrupt	HBlankIn
Interrupt	Timer0
Interrupt	Timer1
Interrupt	DSP end
Interrupt	Sound request
Interrupt	System manager
Interrupt	PAD interrupt
Interrupt	Level 0 DMA end
Interrupt	Level 1 DMA end
Interrupt	Level 2 DMA end
Interrupt	Sprite Draw end

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