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I'm building from source, and yes using the newer GCC<br><br>where can I find the info on the changes needed to the code for these fixes?<br><br>thanks<br><br><div><hr id="stopSpelling">Date: Sun, 24 Jul 2011 10:36:58 +0100<br>From: scope.matthew@btinternet.com<br>To: simh@trailing-edge.com<br>Subject: Re: [Simh] need help with vax780 on linux<br><br>
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On 24/07/2011 05:25, Dan Gahlinger wrote:
<blockquote cite="mid:BLU166-w4566E511BE6F1FF1C79C04C9300@phx.gbl">
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I got a DSK file from other user which works fine on their
system,<br>
but when I try it on my linux system I just get errors, no
matter how I try to boot it.<br>
<br>
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...<br>
<blockquote cite="mid:BLU166-w4566E511BE6F1FF1C79C04C9300@phx.gbl">
<div dir="ltr">sim> boot rq0<br>
Loading boot code from vmb.exe<br>
<br>
<br>
VAX/VMS Version V4.2 24-JUN-1985 08:00<br>
<br>
<br>
<br>
**** FATAL BUG CHECK, VERSION = BJT INVEXCEPTN, Exception while
above ASTDEL or on interrupt stack<br>
<br>
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<br>
This looks a lot like the O2 optimization bug that was discussed
back in December/January. Did you build simh from source?<br>
<br>
If you are building with GCC 4.x there are some changes that need to
be made to the macros in vax780_defs.h or the makefile needs to be
modified in order to reduce the optimization level (-O1 rather than
-O2).<br>
<br>
Matt<br>
<br>
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