Speed Measurement of A1200 Cycle Exact

Leandro Jardim · 18 March 2011, 21:52

One day would be possible to measure the correct timing of a A1200 in WinUAE with programs like SysInfo or AIBB?

Is not possible to measure the speed of emulators perfectly, but would exist a kludge to do it?

I am just curious.

For me, WinUAE is like an AMIGA, only better. The only problem is that I cant touch it, like the real hardware.

Mad-Matt · 18 March 2011, 22:14

Why isnt it possible ? A1200 quickstart, insert aibb floppy and ya good to go. Aibb even has a default A1200 comprison built in to compare.

Leandro Jardim · 18 March 2011, 22:22

Because the measured speed get as high as of an A3000!

See the link.

Toni Wilen · 21 March 2011, 08:16

Currently in 68020 CE mode only bus cycles and cache memory is emulated (more or less) cycle exactly. Which is usually enough for most programs, even games and demos, at least as long as there is no fast ram.

Internal instruction execution is currently mostly instant. Problem is 68020 being too advanced compared to simple 68000, bus cycles and instruction exection can happen simultaneously which makes emulation much more complex and time consuming. Maybe someday..

Leandro Jardim · 02 April 2011, 02:34

Thanks Toni, we learn a lot with your replies!

18 March 2011, 21:52	#1
Leandro Jardim Registered User Join Date: Nov 2009 Location: Legoland Age: 45 Posts: 1,461	Speed Measurement of A1200 Cycle Exact One day would be possible to measure the correct timing of a A1200 in WinUAE with programs like SysInfo or AIBB? Is not possible to measure the speed of emulators perfectly, but would exist a kludge to do it? I am just curious. For me, WinUAE is like an AMIGA, only better. The only problem is that I cant touch it, like the real hardware.

18 March 2011, 22:22	#3
Leandro Jardim Registered User Join Date: Nov 2009 Location: Legoland Age: 45 Posts: 1,461	Because the measured speed get as high as of an A3000! See the link. Last edited by Leandro Jardim; 27 March 2019 at 13:43.

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18 March 2011, 22:14	#2
Mad-Matt Longplayer Join Date: Jan 2005 Location: Lincoln / UK Age: 44 Posts: 1,846	Why isnt it possible ? A1200 quickstart, insert aibb floppy and ya good to go. Aibb even has a default A1200 comprison built in to compare.

21 March 2011, 08:16	#4
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,502	Currently in 68020 CE mode only bus cycles and cache memory is emulated (more or less) cycle exactly. Which is usually enough for most programs, even games and demos, at least as long as there is no fast ram. Internal instruction execution is currently mostly instant. Problem is 68020 being too advanced compared to simple 68000, bus cycles and instruction exection can happen simultaneously which makes emulation much more complex and time consuming. Maybe someday..

02 April 2011, 02:34	#5
Leandro Jardim Registered User Join Date: Nov 2009 Location: Legoland Age: 45 Posts: 1,461	Thanks Toni, we learn a lot with your replies!

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