The x86 world has a stand-alone memory test program called memtest86 that boots from a floppy. This is great, because it can test all the memory in the system. It's only a few kB in size, and can move itself about as needed. It uses direct VGA text memory access for output.
So now I have a Mac with some bad memory, and... what do I do? MacOS seems to test memory at boot, but doesn't reliably find a problem. Maybe 15% of the time I get an error message. Any hope of a stand-alone program that would take advantage of the various PowerPC features (cache control & AltiVec prefetch) to find memory problems?
