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List:       qemu-devel
Subject:    Re: [Qemu-devel] Sound and MinGW problems on Windows host
From:       Sylvain Petreolle <spetreolle () yahoo ! fr>
Date:       2004-07-08 12:12:31
Message-ID: 20040708121231.59897.qmail () web51106 ! mail ! yahoo ! com
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> > Make sure you have correct setup for adress/irq/dma/hdma
> 
> Could you tell me the difference between dma and hdma? In DOS-times
> I wasn't using PC ;). Now in setups I use 220h/irq 5/dma 5
This could explain why the sound is choppy for you...
A dma is a direct channel for memory access.

DMA from 0 to 3 have 8 bit access, and
DMA from 4 to 7 have 16 bit acess (these are HDMAs)

Youre using the dma 5 (16 bit) when it should be a 8 bit acess.
Current config for qemu is (in DOS settings) :
SET BLASTER=A220 I5 D1 H5 T5

D1 is dma 1, H5 is for hdma 5.
T5 means Soundblaster 16 

=====
Sylvain Petreolle (spetreolle_at_users_dot_sourceforge_dot_net)
Say NO to software patents
Dites NON aux brevets logiciels

"You believe it's the year 1984, when in fact, its closer to 2184"1984 / Matrix


	

	
		
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