Weird WinUAE issue?!

h0ffman · 07 December 2010, 11:30

Hi Guys

Wondered if you can help. I've attached a little EXE which plays two modules, one after the other. Problem is the PT replay source I'm using seems to bug right out in WinUAE. I've just tested it on my A1200 and all seems fine. Is it just my WinUAE config thats responsible for this? Any help would be great.

Toni Wilen · 07 December 2010, 12:05

Just by looking at my crystall ball (also not enough information error, does the configurations even match?): Many PT routines have CPU delay loops that cause missed notes (or bad notes) depending on CPU speed and other variables.

StingRay · 07 December 2010, 12:33

The replay routine is fine, uses proper DMA wait. Also, it works fine here if I set the VBR to zero due to a bug (well, for me it is one anyway) in your code.

Code:

	lea	0,a0			; Fix this, needs the proper VBR
	move.l #$1b0f87,d0
	jsr	CIA_AddCIAInt

The VBR can be relocated on CPU's >68000 so if you assume that it always starts at $0 your code won't work properly (i.e. in this case no music will be played if the VBR has been relocated).

Toni Wilen · 07 December 2010, 12:39

Before reporting possible next issue: identical hardware setup is not enough, also make sure OS setup is identical.

h0ffman · 07 December 2010, 13:42

Cheers

And will do next time.

07 December 2010, 12:33	#3
StingRay move.l #$c0ff33,throat Join Date: Dec 2005 Location: Berlin/Joymoney Posts: 6,863	The replay routine is fine, uses proper DMA wait. Also, it works fine here if I set the VBR to zero due to a bug (well, for me it is one anyway) in your code. Code: lea 0,a0 ; Fix this, needs the proper VBR move.l #$1b0f87,d0 jsr CIA_AddCIAInt The VBR can be relocated on CPU's >68000 so if you assume that it always starts at $0 your code won't work properly (i.e. in this case no music will be played if the VBR has been relocated).

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07 December 2010, 12:05	#2
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,505	Just by looking at my crystall ball (also not enough information error, does the configurations even match?): Many PT routines have CPU delay loops that cause missed notes (or bad notes) depending on CPU speed and other variables.

07 December 2010, 12:39	#4
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,505	Before reporting possible next issue: identical hardware setup is not enough, also make sure OS setup is identical.

07 December 2010, 13:42	#5
h0ffman Registered User Join Date: Aug 2008 Location: Salisbury Posts: 744	Cheers And will do next time.

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