Re: A20 delay

["VALETTE Eric" <valette@crf.canon.fr>]

>>>>> "Aleksey" == Quality Quorum <qqi@world.std.com> writes:

Aleksey> As far as I understand previous patch I submitted was corrupted
Aleksey> when merged with recent snapshot. Are you referring to something else ?

Yes. We fixed the not closed comments and tried your delay with the loop
implementation. We get an error when programming the 8259 leading
to incorrect interrupt controller behavior and a system with no interrupt 
at all.

If instead of the "delay loop" we use the old "outb al, $0x80" delay, it works again...

As far as I understood, the delay was causing problem to you for A20 setting and
not the PIC. If this is the case, I would suggest to let the delay as 
"outb	al, $0x80" by default in ldseg.S. Whatever you do in start16,
I do not care : I do not use it. BUT I would suggest to look at linux 
code as an example of *highly tested* solution.


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