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From: Programmingkid <programmingkidx@gmail.com>
To: qemu-ppc <qemu-ppc@nongnu.org>,
	Andrew Randrianasulu <randrianasulu@gmail.com>
Cc: qemu-devel qemu-devel <qemu-devel@nongnu.org>,
	Howard Spoelstra <hsp.cat7@gmail.com>
Subject: Re: [PATCH v4] Implement the Screamer sound chip for the 	mac99 machine type
Date: Sun, 23 Feb 2020 21:39:15 -0500	[thread overview]
Message-ID: <89817DD1-763B-40AA-866F-E4A573852551@gmail.com> (raw)
In-Reply-To: <mailman.135.1582477227.13245.qemu-ppc@nongnu.org>


> On Feb 23, 2020, at 12:00 PM, qemu-ppc-request@nongnu.org wrote:
> 
> Message: 2
> Date: Sun, 23 Feb 2020 12:43:37 +0300
> From: Andrew Randrianasulu <randrianasulu@gmail.com>
> To: hsp.cat7@gmail.com, qemu-devel@nongnu.org, "qemu-ppc@nongnu.org"
> 	<qemu-ppc@nongnu.org>
> Subject: Re: [PATCH v4] Implement the Screamer sound chip for the
> 	mac99 machine type
> Message-ID: <202002231243.37654.randrianasulu@gmail.com>
> Content-Type: text/plain;  charset="us-ascii"
> 
> Just thought I must share my uneducated guess on issue reported at
> 
> https://www.emaculation.com/forum/viewtopic.php?f=34&t=9820
>> Please note that running with 1024Mb of memory will make sound stop working in Mac OS 9.x. So run with less memory.
>> As will running without virtual memory.
> 
> My guess this has something to do with device memory regions, may be because Linux  always uses Virtual memory
> (MMU, address translation), as well as Mac OS X 10.x - this little issue was unnoticed until recently ?

Interesting theory. We may have to consult the 'Inside Macintosh' series under Memory management to find out how Mac OS 9 works with non-virtual memory. 

       reply	other threads:[~2020-02-24  2:39 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <mailman.135.1582477227.13245.qemu-ppc@nongnu.org>
2020-02-24  2:39 ` Programmingkid [this message]
2020-02-23  9:43 [PATCH v4] Implement the Screamer sound chip for the mac99 machine type Andrew Randrianasulu
  -- strict thread matches above, loose matches on Subject: below --
2020-02-18  1:22 John Arbuckle
2020-02-21  9:13 ` Howard Spoelstra
2020-02-21 11:30   ` Programmingkid
2020-02-21 12:09     ` Howard Spoelstra
2020-02-23 14:17       ` Howard Spoelstra
2020-02-24  2:33         ` Programmingkid

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