jit or 2x1200 speed break cd32 detect cd

turrican3 · 31 March 2013, 03:15

i mean :you mount in winuae menu a cd32 game ex:"sensible soccer cd32 1.2" you set jit, i think after you launch, it doesn't have the time to detect the cd and go to amigados same thing with 2x1200 speed often the same problem.
i think if you emulate a cd32 too fast it boot so fast that the cd-rom has not enough time to be detected or mounted, i don't know ????
i don't know if a very fast cd32 in the real world does the same.???

Toni Wilen · 31 March 2013, 10:05

You would see CD32 title screen, not any kind of amigados screen if CD is not detected.

turrican3 · 01 April 2013, 05:07

sorry for the amiga dos screen, it was because i set "add pc drives at startup".
but you can make the test : take any cd32 iso , set the jit on and fastest possible,then launch -> CD32 title screen.it's a fast test

Toni Wilen · 20 April 2013, 17:17

It is caused by stupid code in cd32 cd device driver. It has CPU delay loop (argh!) and expects CD "identify" command to execute in 1000 rounds. Perhaps it can be worked around easily...

turrican3 · 20 April 2013, 17:51

thank you to look at it

then if someone put 68060 80mhz in his cd32, it will break the cd detection !
or it isn't powerfull enough ???

ps: i know that it doesn't exist

31 March 2013, 03:15	#1
turrican3 Moon 1969 = amiga 1985 Join Date: Apr 2007 Location: belgium Age: 48 Posts: 3,913	jit or 2x1200 speed break cd32 detect cd i mean :you mount in winuae menu a cd32 game ex:"sensible soccer cd32 1.2" you set jit, i think after you launch, it doesn't have the time to detect the cd and go to amigados same thing with 2x1200 speed often the same problem. i think if you emulate a cd32 too fast it boot so fast that the cd-rom has not enough time to be detected or mounted, i don't know ???? i don't know if a very fast cd32 in the real world does the same.???

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31 March 2013, 10:05	#2
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,534	You would see CD32 title screen, not any kind of amigados screen if CD is not detected.

01 April 2013, 05:07	#3
turrican3 Moon 1969 = amiga 1985 Join Date: Apr 2007 Location: belgium Age: 48 Posts: 3,913	sorry for the amiga dos screen, it was because i set "add pc drives at startup". but you can make the test : take any cd32 iso , set the jit on and fastest possible,then launch -> CD32 title screen.it's a fast test

20 April 2013, 17:17	#4
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,534	It is caused by stupid code in cd32 cd device driver. It has CPU delay loop (argh!) and expects CD "identify" command to execute in 1000 rounds. Perhaps it can be worked around easily...

20 April 2013, 17:51	#5
turrican3 Moon 1969 = amiga 1985 Join Date: Apr 2007 Location: belgium Age: 48 Posts: 3,913	thank you to look at it then if someone put 68060 80mhz in his cd32, it will break the cd detection ! or it isn't powerfull enough ??? ps: i know that it doesn't exist

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