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[67.149.58.30]) by smtp.gmail.com with ESMTPSA id p2sm4779555ywd.58.2020.02.23.18.39.16 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 23 Feb 2020 18:39:17 -0800 (PST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 10.3 \(3273\)) Subject: Re: [PATCH v4] Implement the Screamer sound chip for the mac99 machine type From: Programmingkid In-Reply-To: Date: Sun, 23 Feb 2020 21:39:15 -0500 Content-Transfer-Encoding: quoted-printable Message-Id: <89817DD1-763B-40AA-866F-E4A573852551@gmail.com> References: To: qemu-ppc , Andrew Randrianasulu X-Mailer: Apple Mail (2.3273) X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::b44 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-devel qemu-devel , Howard Spoelstra Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" > On Feb 23, 2020, at 12:00 PM, qemu-ppc-request@nongnu.org wrote: >=20 > Message: 2 > Date: Sun, 23 Feb 2020 12:43:37 +0300 > From: Andrew Randrianasulu > To: hsp.cat7@gmail.com, qemu-devel@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=3D"us-ascii" >=20 > Just thought I must share my uneducated guess on issue reported at >=20 > https://www.emaculation.com/forum/viewtopic.php?f=3D34&t=3D9820 >> 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. >=20 > 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.=20=