4 ms·
In early Mac OSs, the memory management designs used the top byte for flags as those units didn't have a hardware MMU. System 7 was the first OS to support 32-
by jsymolon 10y ago
In early Mac OSs, the memory management designs used the top byte for flags as those units didn't have a hardware MMU.
System 7 was the first OS to support 32-bit.