Re: [PATCH v4] Implement the Screamer sound chip for the mac99 machine type

[Programmingkid]

> On Feb 23, 2020, at 12:00 PM, address@hidden wrote:
> 
> Message: 2
> Date: Sun, 23 Feb 2020 12:43:37 +0300
> From: Andrew Randrianasulu <address@hidden>
> To: address@hidden, address@hidden, "address@hidden"
>       <address@hidden>
> Subject: Re: [PATCH v4] Implement the Screamer sound chip for the
>       mac99 machine type
> Message-ID: <address@hidden>
> 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.