*** Answering a msg posted in area LOCAL001 (SysOp's Personal Mail).
Hello Derek!
19 Sep 97 04:28, Derek Oldfather wrote to James Mckenzie:
 DO> Hello James!
 DO> 18 Sep 97 19:14, James Mckenzie wrote to Joe Lang:
 JM>> I wonder what type of video card you are using, since you are
 JM>> using COM4.
 DO> Why would that make a difference?
Certain Video Cards, when run in other than VGA Mode, use up the address 
(2E8H) that COM4 uses.  ATI Mach8, Mach32 and Mach64 video cards do this.  S3 
8XX, 9XX cards do so likewise.  Cirrus Logic 54XX cards do not (up to the 
5432 cards.)
What happens is that DOS programs do not see these errors as they do not 
normally run in SVGA modes, but OS/2 programs do.  The manual that came with 
my MACH64 based Graphics Turbo Pro card warned of this, and advised to not 
use COM4.
James
... ERROR #0015: Unable to exit Windows. Try the door.
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