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Most apps, so long as they don't do anything "clever" will work if you have Classic installed. If you're on an Intel system then you don't have Classic and will need to look into emulation.
 
Nermal said:
Most apps, so long as they don't do anything "clever" will work if you have Classic installed.
... or don't run in a 32 bit environment... I have apps that won't run on systems running System 7.x.x (Macromind Director 2 is one title that comes to mind off hand).
 
RacerX said:
... or don't run in a 32 bit environment... I have apps that won't run on systems running System 7.x.x (Macromind Director 2 is one title that comes to mind off hand).

This is going back a bit, but wasn't there an option in 7 to reboot in 24-bit mode? Presumably it's long gone in 9 though.
 
Nermal said:
This is going back a bit, but wasn't there an option in 7 to reboot in 24-bit mode? Presumably it's long gone in 9 though.
IIRC, there were two INITs/Extensions (one from Apple, another from Connectix eventually adopted by Apple) that allowed 24-bit systems to run in 32-bit mode, but not vice-versa. If the OP's application was designed for System 6.0.7 (and nothing earlier), then it should run in Classic.
 
Nermal said:
This is going back a bit, but wasn't there an option in 7 to reboot in 24-bit mode? Presumably it's long gone in 9 though.
it was in the memory control panel in 7.x.x... I still kept my old system (back around 1991) able to dual boot between 7.0 and 6.0.8 for some apps because some of the issues didn't go away with switching just the mode.

Of course 68000 systems were stuck in that 24 bit mode all the time. And Apple dropped both support for the 24 bit mode and support for 24 bit hardware in Mac OS 7.6 as I recall.
 
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