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

["Bryan Parkoff" <nospam@nospam.com>]

    Okay, you intend to implement protected mode to the 65816 however 65816 
does not have instructions to enable or disable protected mode.
    Do you know that GS/OS can run two applications or more at the same 
time?  It borrowed idea from Macintosh Finder.  I can't remember the name, 
but it looks like multi-application switch turned on.  Someone developed 
this software to GS/OS, but I can't remember the name.

Bryan Parkoff

"Kelly Hall" <khall@acm.org> wrote in message 
news:Z7zOd.3418$aW6.2134@newssvr22.news.prodigy.net...
> Scott Alfter wrote:
>> Expecting modern features to be present in nearly-20-year-old hardware is
>> insane.  You can sometimes add this stuff in later on, but hardware-based
>> memory protection wasn't something you'd see on PCs in the mid-'80s.
>
> 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.
>
> Kelly