On Sun, Oct 5, 2008 at 11:12 PM, tortoise <[EMAIL PROTECTED]> wrote:

>
>
> > My question really is what would cause this? Is there some sort of
> > difference between 7.5.5 and 8.1 sound management that prevents some
> > older games not to output sound? Maybe there's a little hack or moving
> > of files that I need to do? It's been a while since I've used a 68k
> > Mac and I'm really starting to learn all over again how to mess with
> > them (I know the basics of course).
>
> .. did you try
> changing the sound output settings in sound control panel -- do you
> even have it, as 8.1 gave Monitors&Sound combined, but I do recall
> one of my programs wanting the "split" Sound only control panel (I put
> M&S upgrade to my 7.x system, too -- with SystemAV extensio does it
> I think).
>

As I recall, a lot of games made assumptions about Mac hardware in the early
days, and did things like talk directly to the sound hardware, bypassing the
official Apple sound APIs.  Those games broke badly first with the 68k AV
Macs, which used new special sound hardware that included a DSP.  A lot of
games came out with "AV Mac" patches so they would work on the AV Macs, and
later the PowerMacs (which also used different sound hardware than the
earlier 68k Macs).  I believe that Lemmings 1.4.2a was such an "AV Mac"
patch that fixed the way the sound in that game worked to follow Apple
guidelines.

- Nate

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