> At 8:41 PM -0700 7/1/04, Jack VanOlst wrote:I have a program I must run which is pre-Power Mac and is supposed to run on
a 68040 machine such as the Quadra 650. However, our last Quadra has given
its last breath, I think. I seem to remember that when the first Power Macs
came out, there were non-compatible programs that would not run on them, and
until the Power Mac versions came out, Apple or someone offered a patch or
kludge that allowed you to run older programs on the newer Macs. Does
anyone remember this and can you possibly point me to a version of this
antique?
OS 9 running in Classic mode under OS X can still run 68K code. Any Mac OS on a PPC machine will run 68K code. Not all 68K programs will run on PPCs or under certain OS versions but this is usually due to the program not being well written.
The one problem I could see is that the 68K emulation on PPCs reported the processor to be a 68020 so if the code has to have a 68040 you might be stuck. -- Clark Martin
Hi Clark-
Thanks for your help. The actual error reported by the program when run on a PPC is that "a math coprocessor is required to run this app". Does that help?
The FPU (math coprocessor) is not emulated. I guess the reasoning is that it didn't matter whether the program accesses an emulated FPU or it uses SANE. SANE is "Standard Apple Numeric Environment", a method for programs to use floating point functions whether the machine has an FPU or not. Most programs will use SANE if there is no FPU but a few (including yours) just won't run without an FPU.
ISTR there was an add on program someone wrote to provide FPU emulation on a PPC. I don't know what it's called off hand.
--
Clark Martin
Redwood City, CA, USA
Macintosh / Internet Consulting
"I'm a designated driver on the Information Super Highway"
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