Re: [ql-users] Qliberator & SMSQ - problems problems

[Richard Zidlicky]

On Fri, Mar 23, 2001 at 05:00:31PM -0500, ZN wrote:

> Well, I was told that code and data accesses should actually ignore the top
> three bits (29, 30, 31). In other words, any combination of bits 29, 30,
> 31, should effectively act as if those bits are 000.
> Please someone tell me that's how it's supposed to be because the GF design
> relies heavily on this fact, the whole address map is constructed around
> it!

depends on the degree of compatibility you are trying to achieve, 
for some software everything above 16 MB must be wrapped down.
You can play with UQLX and Minerva to see the effects.

A programmable MMU helps of course.

Bye
Richard