Re: How to protect 65816's 16MB Memory?

[russotto@grace.speakeasy.net (Matthew Russotto)]

In article <Z7zOd.3418$aW6.2134@newssvr22.news.prodigy.net>,
Kelly Hall  <khall@acm.org> wrote:
>
>Protected memory spaces are not a modern feature, being generally 
>developed in the 60s.  Granted, computers targeted at the masses have 
>always lagged on features because the target market is highly 
>cost-sensitive.
>
>The 65816 was never designed for serious computing - it was a hack to 
>attempt to not lose the dwindling market for the 6502.  That said, I 
>really enjoyed my gs and wish I still owned it.

The 68000 through 68020 didn't have them either, and they WERE designed
for serious computing.  I'm not sure when they become commonplace on
processors (as opposed to external units, which they were on the minis
and mainframes, and the 68020 for that matter), but it was long after
the 65816 made its debut.