Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!hplabs!hp-pcd!hplsla!davidr
From: davidr@hplsla.HP.COM (David M. Reed)
Newsgroups: comp.lang.pascal
Subject: Re: HELP!! TP stack problem
Message-ID: <6490004@hplsla.HP.COM>
Date: 12 Jan 90 20:19:53 GMT
References: <928@thor.wright.EDU>
Organization: HP Lake Stevens, WA
Lines: 14

I am probably wrong, but I suspect it is related to the STACKS setting for
DOS.  I think this started with MSDOS 3.3, but you can define the size and
number of hardware interrupt stacks used by DOS.  You place a STACKS=n,s
statement in CONFIG.SYS, where n = number of stack frames (from 8 to 64,
with 9 as a default) and s = size in bytes of each stack frame (from 32
to 512, with 128 being default).

We began having problems (system hangs, or crashes, or reports stack
overflow, and other symptoms) especially with Logitech mice, particularly
if the mouse is moved quickly (generating lots of interrupts, apparently
faster than they could be processed.  Our experimentation indicated, for
that case, that the second number had more influence on behaviour, and
our systems less susceptible to these problems when the size was in the
middle of its range.