Best version of 68040.library to use with WinUAE.

[KennyR]

Karlos wrote:
MOS speed advantage is not just down to its 68K emulation - the fact that the OS calls (usually the most time consuming) are PPC native helps just as much. No doubt register allocation is a trivial operation on PPC too ;-)

I meant more the fact that Trance is Hotspot JIT, the fastest variant available.

On my PC at least, 040 optimised code running in 040 emulation mode (all other UAE settings unchanged) is faster than than 020/882 code in 040 emulation mode. This is unusual, unless the 040 emulation is written differently in some way.

I suppose then it depends on the PC's CPU and memory bandwidth. If you say that 040 code is faster on WinUAE for you I believe you, but there's no logical reason why it should be faster (at least that I can think of).

[Karlos]

KennyR wrote:

I meant more the fact that Trance is Hotspot JIT, the fastest variant available.

Yeah, I wouldn't mind seeing that for myself but alas MOS1.4 for blizzard is not publically available.

I suppose then it depends on the PC's CPU and memory bandwidth. If you say that 040 code is faster on WinUAE for you I believe you, but there's no logical reason why it should be faster (at least that I can think of).

Agreed - it is pretty weird and not at all what I expected.

[whabang]

I was also kinda suprised. I noticed a small speed increase when fiddeling around with the WinUAE settings. As I'm no programmer, I have no idea why.
I'm going to do some more testing...

[whabang]

I´ve done some testing. Surfing with Aweb (v3.4, 040 optimized) is much smoother when using 040-emulation.

[xeron]

I can't understand why the 040 emulation should be any faster. Surely if its a different emulation core, it would be a good idea to just add the missing instructions and use the same core for both so that it runs faster whatever mode you select? :-?

[jeffimix]

maybe it's a thing with maintaining chipset timing?