[Info-vax] QIO Writes to a mailbox

[Steven Schweda]

On Nov 4, 11:52 am, Steve Bainbridge <stephen_bainbri... at yahoo.co.uk>
wrote:

> [...] I'm
> aware of the obvious missing check on the IOSB, but I can't
> say with any certainty that this is causing the problem.

   Exactly.  Without looking at the IOSB status, you can't
say much of _anything_ with any certainty.

> [...] it's simple to change the code, [...]

   Sure is.  Should also be harmless.  Might also supply some
crucial missing information.  So, _why_ not do it?

> [...] we would prefer to try
> and understand [...]

   Understand?  _Without_ collecting the important (and
easily available) information?  Really?  Good luck on that
quest.