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How to protect 65816's 16MB Memory?
- Subject: How to protect 65816's 16MB Memory?
- From: "Bryan Parkoff" <nospam@nospam.com>
- Date: Thu, 10 Feb 2005 00:23:08 GMT
- Newsgroups: comp.sys.apple2
- Organization: SBC http://yahoo.sbc.com
- Xref: g2news1.google.com comp.sys.apple2:8302
It looks like that Apple IIgs uses real mode, but it does not have
protected mode. What happen if you access "Visit Monitor" in Control Panel
while GS/OS 6.0.1 is running after you zero in some memory pages? GS/OS
will crash!! Do you have idea why it does not have protected mode feature
in 65816 CPU like 80x86 CPU?
Someone mentioned that GS/OS has its own memory manager to handle
memory, but assembly programmers have an ability to overwrite memory pages.
What do you think?
Bryan Parkoff