Re: I/O permissions for V86 tasks (Enhanced V86 Mode)?

Ian Collier (imc@comlab.ox.ac.uk)
Tue, 21 Jul 1998 14:23:59 +0100 (BST)


On Tue, 21 Jul 1998 15:21:09 +1200, Chris Wedgwood said:
> I assume the IO perms bitmap has to be inside the TSS?

The TSS contains a 16-bit pointer to the bitmap, so, since it is unlikely
that two randomly allocated pieces of memory will be within 64K of each
other, the bitmap and TSS have to be allocated at the same time.

> (I don't know jack
> about i386 vm structures and and so on).

I wonder why you are in this thread then. :-)

imc

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