20 May
2016
20 May
'16
8:50 p.m.
First off, can you supply a list of architectures
that are NOT 2's
complement integer math that are still made and in active use today? As far
as I can tell, there was only one signed-magnitude architecture ever
commercially available (and that in the early 60s) and only a few 1's
complement architectures from the 60s (possibly up to the early 70s) that
*might* still be in active use.
There are probably a couple hundred Unisys 2200 systems left in the
world (no one really knows the true number). Of course, when the C
standards were being drawn up, there were many more, with a small but
significant share of the mainframe market.
--
Will (C sucks)