English Amiga Board - View Single Post - Post WinUAE 3.5 feature suggestions/comments

PeterK · 25 June 2017, 01:42

Ok, a more serious feature request now:

The last time I tried to compile WinUAE myself was already more than 11-12 years ago on my old Win98 system. At that time there were still some 68k instructions not emulated by the JIT directly, but instead there was a fallback into the non-JIT code. I did not read the WinUAE sources for long. Are all of these old JIT fallbacks into non-JIT code now replaced by direct JIT code? Every forced fallback might result in a massive slowdown during the code execution. One example were the very complex PC-relative addressing modes of the 68k code.

25 June 2017, 01:42	#41
PeterK Registered User Join Date: Apr 2005 Location: digital hell, Germany, after 1984, but worse Posts: 3,378	Ok, a more serious feature request now: The last time I tried to compile WinUAE myself was already more than 11-12 years ago on my old Win98 system. At that time there were still some 68k instructions not emulated by the JIT directly, but instead there was a fallback into the non-JIT code. I did not read the WinUAE sources for long. Are all of these old JIT fallbacks into non-JIT code now replaced by direct JIT code? Every forced fallback might result in a massive slowdown during the code execution. One example were the very complex PC-relative addressing modes of the 68k code. Last edited by PeterK; 25 June 2017 at 01:48.