What trashes memory ?

[<cah...@po...>]

Hi Geert!

I think I found out thay way to switch fastata register to another set. I
use ide_hwif_t->selectproc. Is it safe ? It's written that it tweaks
hardware to select drive... Inside procedure I change hwif->io_ports and
hwif->hw.io_ports. I think it should work but I have another problem.

Can you possibly take a look at the source in attachment (should I post it
to the list ?). I don't know why but during loading /bin/sh something
trashes fastata_offsets !!! When kernel enters fastata_switch_register_set
(immediately before kernel panics) fastata_offset contents is trashed (I
know it because offsets address is the same as in previous calls).

BTW. ELBOX programmer said that ide-interrupts on second port can only be
found by polling specific fastata register, so a driver for second port
cannot be interrupt-driven as gayle and others are. 

Regards
Krystian Baclawski

PS. Happy New Year 2003 !



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