Re: [Squeak-VMdev] Versiojn 4 changes

[Ian P. <ian...@in...>]

On 07 Apr 2004, at 01:06, Andreas Raab wrote:

> The only objection I'd have is whether this would have any effects on
> machines that "like to give you the upper half of the address space" 
> (e.g.,
> all addresses must have that "tag bit" set).

I've never met one of these (outside of 32-bit address spaces).  This 
would only be serious problem on machines that weren't consistent about 
whether the top bit was set (consider: top N bits of virtual address 
tell you what kind of segment the memory is allocated in).

Given that we've only (reaslistically) got 3 s/w architectures to worry 
about, the experiment would be trivial to perform...  (I'll do so as 
soon as I get the chance.)

Cheers,
Ian