> On Feb 23, 2020, at 12:00 PM, qemu-ppc-requ...@nongnu.org wrote: > > Message: 2 > Date: Sun, 23 Feb 2020 12:43:37 +0300 > From: Andrew Randrianasulu <randrianas...@gmail.com> > To: hsp.c...@gmail.com, qemu-devel@nongnu.org, "qemu-...@nongnu.org" > <qemu-...@nongnu.org> > Subject: Re: [PATCH v4] Implement the Screamer sound chip for the > mac99 machine type > Message-ID: <202002231243.37654.randrianas...@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.
