Happy DEC-20 Day! - test-drb@ccmp.vtda.org

22 Dec 2009

...
    In hindsight, could the DEC-20 or RISC version of it
 had marketing and other bad luck changed ,and
 today replaced the PC in many applications?  
 Six bit based architectures all died with the rise of the IBM S/360
 family. DEC, CDC, Univac.

 It also did not help that many of these old line mainframe
 architectures were getting hard to extend. For the DEC 36 bitters -
 what does one do after the 18 bit address pointer, with two neatly
 stuffed into a 36 bit word? A kludge. What does one do after the 36
 bit address pointer? A worse kludge.  
 I kind of suspected that was the case. Did anyone make a large 48 bit 
 machine?

If you mean physically large, then yes. However on the 1301, addresses range only from 0
to 3999 (decimal).

Probably not what you meant really.