Re: 64-bit

["Leif Svalgaard" <leif@xxxxxxxx>]

From: Steve Richter <srichter@autocoder.com>
> The very real advantage to >64 bits is that the 16meg size limit on a space
> can be increased.
>
> Currently the 8 byte address is divided as a 5 byte segment number and a 3
> byte offset. If 128 bits, the division could be 8 byte segment and 8 byte
> offset. It is the offset that limits the size of the segment/space.
>
> Many ask "why do you need a larger than 16meg space" ?.   One function is
> the saving of the state of a program.  Copy the the allocated memory of a
> job to disk, shut down the job, then at a later time, start another job
back
> up, copy the state of the original job to the new job, and resume running.
> Makes a nice debug feature.
>

long ago, one could do this. I remember that I had a job that would run for
2 days (computers were 1000 times slower then), but I couldn't get 2 days
of continuous computer time, at most one hour a day, so after one hour
my job was saved to tape; the next day it was "rolled in" (as the phrase was)
and continued, etc. so after a period of several weeks I got the results from
the job.