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From: tif@commlab1.austin.ibm.com (/32767)
Newsgroups: comp.sys.tandy
Subject: Re: Tandy 6000 stack probes - question
Message-ID: <2492@awdprime.UUCP>
Date: 31 May 90 21:23:24 GMT
References: <1990May31.173301.25856@calgary.uucp>
Sender: news@awdprime.UUCP
Organization: IBM AWD, Austin
Lines: 18

In article <1990May31.173301.25856@calgary.uucp> stauffer@enme.UCalgary.CA (Ken Stauffer) writes:
>	Does anyone understand how the stack-probes are implemented
>	on a Tandy 6000 running Xenix?

Perhaps I should have let someone more confident answer but
this is how I understand it:  The stack don't grow.
The size is set by an option (-F?) to ld.
The probes are a waste of time.  In another world,
the operating system would detect the probe (because
it would cause a fault) and grow the stack.  Since the
68000 can't restart an instruction the tstb wouldn't
work but the _real_ stack access would.

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