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This configuration works fine, I've used it several times before.
Under Linux no changes should be needed to the Simh code but under
Windows you will need to change sim_fio.c as follows:<br>
<br>
#include "sim_defs.h"<br>
<br>
change to:<br>
<br>
#include <share.h><br>
#include "sim_defs.h"<br>
<br>
---<br>
<br>
return fopen64 (file, mode);<br>
#else<br>
return fopen (file, mode);<br>
#endif<br>
<br>
change to:<br>
<br>
return fopen64 (file, mode);<br>
#else<br>
return _fsopen (file, mode, _SH_DENYNO);<br>
#endif<br>
<br>
This will prevent exclusive locking on the image file. I don't know
if any changes are needed to the other supported platforms.<br>
<br>
I also did a demo last year with storageworks disks on a shared SCSI
bus between a PC and a VAX 4000-200 (with a CMD MSCP/SCSI card). The
system disk was a host based shadow set made up from two of the SCSI
disks, maintained by Simh and the real VAX.<br>
<br>
Matt<br>
<br>
On 29/09/2011 09:00, patrick renouvel wrote:
<blockquote
cite="mid:1317283200.99738.YahooMailNeo@web26503.mail.ukl.yahoo.com"
type="cite">
<div style="color:#000; background-color:#fff; font-family:arial,
helvetica, sans-serif;font-size:12pt">
<div>Good morning,
<br>
<br>
I used often SimH for VAX emulation Standalone as well as
LAVC.
<br>
<br>
I'd like to boot two SimH instance on the same disk (sys0 and
sys1 ) to have a copy of our Charon Cluster.
<br>
<br>
Did somebody try this once ?
<br>
<br>
Any lock troubles ?
<br>
<br>
Thanks a lot for your precious help.
<br>
<br>
Kind regards.
<br>
<br>
Patrick.
</div>
</div>
<br>
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