16 bit?


Is the underlying structure of OS X 16-bit? I thought that Mac OS had been fully 32 bit for years...am I wrong?

Note: I don't do linux, I don't do unix. I do graphic design and the extent of my technical knowledge is keyboard shortcuts :) Go easy on me guys. Talk to me like I'm stupid. I just MIGHT understand then :)


I don't know where you got the idea OS X might be 16 bit. It's based largely on NeXTStep and assorted BSD Unix OSes, which have been 32 bit longer than Mac OS.


Notorious Olive Counter
Windows has some 16-bit things here and there lying around in the cruft that has accumulated since Win 3.1 ran on top of DOS. Back in the early nineties, many PCs used 16-bit chips. Windows 2000 will be the first version of Windows that gets rid of all that cruft (at least, if we believe Microsoft, it will)

I don't know about old 68K macs, but PowerPC has used 32-bit instructions from the word go. Since the only 68K code anywhere in OS X should be 68K emulation inside Classic's OS 9, that would be the only place where there might conceivably be 16-bit code.


Puny Member
The mac has never ever used 16bit code, ever. Ever ever ever. Not even the oldest crustiest mac software ever written.

How do these rumors get started?