21 Dec
2009
21 Dec
'09
1:15 p.m.
From: Ben <bfranchuk at jetnet.ab.ca>
> Because the Burroughs B5500 and B6700 computers used a word
> containing 48 bits of data, but also extra bits that described the
> type of the data which played an important role in programming the
> machine, I would consider that series sufficiently out-of-the-
> ordinary to attempt to discuss here;
This also included the Burroughs/Unisys
A-series systems that were made
into the early 90s.
The A-series systems used a 52-bit, tagged word. 1 bit of parity, 3
bits of tag and 48 bits of data.
I don't recall how the addressing worked and Al has my papers on the
architecture, so I can't look it up ...
alan