Here's a snippet of an article I just found on washingtonpost.com,
There are some other notable options in the customized
installation window. Rosetta, the technology that enables code compiled
for PowerPC chips to run on Intel chips, is available--but is not
installed by default. Rosetta only takes up a few megabytes of drive
space, and without it older programs simply won't run, so if you have
such programs, that option is worth checking. To find out if an App is
PowerPC only, select an old app and choose Get Info; if its Kind is
listed as Application (PowerPC), it needs Rosetta.
If you don't, and if you later try to launch a PowerPC app, Snow
Leopard will pop up a window to explain that you need Rosetta and offer
to install it for you (via Apple's Software Update utility). I can only
assume that making Rosetta optional is an attempt by Apple to goad
users to upgrade their apps and to shame developers who still haven't
recompiled their apps to run on Intel chips. But given that most
everyday users have no idea which of their apps are Intel-native and
which are PowerPC, this seems unnecessarily harsh.
So, yeah, QXP 6.x will run on Snow Leopard, provided you get Rosetta installed. Rosetta is Apple's PPC to Intel translator. It was first introduced in Leopard for Intel Macs. But, now with Snow Leopard it's not part of a default install. You have to custom install.
Now, will it run well. No idea. Reports were that is was freakishly buggy in Leopard. I'd suspect that it would be even worse if it runs at all, given that Apple is trying to phase out PPC.
And along that line IMO I would not expect to see Rosetta either updated or included in later updates of Snow Leopard.
Here is that Washington Post article.
Erik Youngren
Composing: Pueblo Publishers
Work Mac: G5-1.8ghz. 4gb RAM. OSX 10.4.11. QXP 7.5. Suitcase Fusion 2
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