27 Jul
2006
27 Jul
'06
5:57 a.m.
And thusly were the wise words spake by Dave Dunfield
Dave,
I hate to be a picker of nits, but you forgot byte 0...
So there is actually 65536 bytes of memory but the last byte is
at address 65535 or $FFFF.
Although according to the author the 6502 can
address 65K, not 64K.
This is very common, and is based on an assumption of 'k' meaning
1000 (decimal), not 1024 - 16 bit bus - 65535 bytes (65 thousand). I've seen it in data sheets and other reasonably
technically accurate
material - I guess it depends on your point of view (and how low-level
your experience is :-)
Hard drive manufacturers have been doing the same thing with "meg"
for years - specing in decimal 1,000,000 makes the drive sound bigger
than specing in 2**20 sized blocks.
I really think this is a very silly practice... Imagine
what would happen if they did that with RAM sticks?!
Cheers,
Bryan