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Technology Stocks : All About Sun Microsystems
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To: Charles Tutt who wrote (27539)2/10/2000 10:12:00 AM
From: rudedog  Read Replies (1) of 64865
 
Charles -
MS has been developing the 64 bit version of Windows off of the 32 bit code line. In mid-98, they began to require that Win2K modules be "64 bit safe" - i.e. pointer operations and stack work had to do correct sign extension, and the memory blocking had to be on 8-byte boundaries.

I am not current on the state of that development, but as recently as last summer, there was only about 10% of the code which was 64-bit ONLY - the rest was straight out of the Win2K 32 bit code tree.

This is actually a lot less complex than maintaining ports for 4 processors, which the NT team did for many years.
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