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No.  The RISC systems were 100% 64 bit, SPD or not.

Al

Al Barsa, Jr.
Barsa Consulting Group, LLC

400>390

914-251-1234
914-251-9406 fax

http://www.barsaconsulting.com
http://www.taatool.com





                                                                                
                                                          
                      Jan Megannon                                              
                                                          
                      <jmegannon@xxxxxxxxx        To:       Midrange Systems 
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                      Sent by:                    Subject:  48-bit RISC         
                                                          
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                      04/29/2003 02:40 PM                                       
                                                          
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Hi Everyone,

I am not sure if this question is right for this forum, or whether it
has been asked before.

When IBM first advertised RISC on the AS/400, it was a case of "64 bits,
no buts...". That implied 64-bit all the way through! Now, was the old
SPD technology on the CISC machines 48 or 64 bit? Why do we have 'low
speed' and 'high speed' slots on the older RISC machines?

In my mind, the SPD technology is 48 bit, with the low speed slots on
the RISC systems there to accommodate 48-bit within the RISC
environment. Am I wrong in my assumptions? Please enlighten.

I know that this probably has no bearing on the new equipment; it is
just that the recent discussion regarding the 'new' 64-bit OS's that are
due have brought this to mind again.

Thanks.

Jan.

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