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From: Martin McCann <martinmcc@orbweavers.co.uk>
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> No, I was referring to the additional modularity and stability made
> possible by the additional abstraction of a HAL.
> 

Please explain this to me - I have had a lot of experience in OS design,
and would like you, who obviously from you remarks, have extensive OS
design knowledge, point out to me how a HAL makes an OS inherintly more
stable than a system that writes its drivers for a particular peice of
hardware, without pretence it will cope with differetn pieces of
hardware?