Misc. Chipset options in WinUAE?

MheAd · 26 June 2004, 16:38

Hi!
I never really understood what those three Misc. Chipset Options in Chipset settings are really for:

- Fast Cooper
- Immediate Blitter
- Cycle exact CPU and Blitter

What are they for?
For instance, most games function equally good no matter whether I activate any of these three or not, but if I want the game "Wings" (Hd-installed version) to run properly, then I must enable 'Cycle exact CPU and Blitter', otherwise all missions played from bombing and strafing view will run too fast. On the other hand, "Trolls" (AGA-version) freezes when the loading of the first level starts when the very same option is activated.

So I would be really grateful if someone could explain what technically these three options do to the emulation procedure.

Thanks in advance!

Toni Wilen · 27 June 2004, 21:33

Fast copper = faster copper emulation. (but it is not 100% compatible)

Immediate blitter = all blitter operations finish immediately. Useful when running system friendly programs (faster screen updates etc..). Not recommended when running games or demos.

Cycle exact: the most compatible A500 emulation mode. Very fast CPU recommended.

In non-68000 mode cycle exact only does some approximation but it really isn't cycle-exact. Emulating 68020 cycle-exactly is very complex, maybe someday when everyone fast enough PC CPU

Melvein · 03 July 2004, 19:24

Quote:

Originally Posted by Toni Wilen

Cycle exact: the most compatible A500 emulation mode. Very fast CPU recommended.

Is celeron 1700 Mhz fast enough? And if it is, should "cycle exakt" be the default option when running games?

04 July 2004, 07:06

Quote:

Originally Posted by Melvein

Is celeron 1700 Mhz fast enough? And if it is, should "cycle exakt" be the default option when running games?

Prova

26 June 2004, 16:38	#1
MheAd Registered User Join Date: Jun 2003 Location: Stockholm Posts: 59	Misc. Chipset options in WinUAE? Hi! I never really understood what those three Misc. Chipset Options in Chipset settings are really for: - Fast Cooper - Immediate Blitter - Cycle exact CPU and Blitter What are they for? For instance, most games function equally good no matter whether I activate any of these three or not, but if I want the game "Wings" (Hd-installed version) to run properly, then I must enable 'Cycle exact CPU and Blitter', otherwise all missions played from bombing and strafing view will run too fast. On the other hand, "Trolls" (AGA-version) freezes when the loading of the first level starts when the very same option is activated. So I would be really grateful if someone could explain what technically these three options do to the emulation procedure. Thanks in advance!

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27 June 2004, 21:33	#2
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,502	Fast copper = faster copper emulation. (but it is not 100% compatible) Immediate blitter = all blitter operations finish immediately. Useful when running system friendly programs (faster screen updates etc..). Not recommended when running games or demos. Cycle exact: the most compatible A500 emulation mode. Very fast CPU recommended. In non-68000 mode cycle exact only does some approximation but it really isn't cycle-exact. Emulating 68020 cycle-exactly is very complex, maybe someday when everyone fast enough PC CPU

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