This file lists bugs that may impede your use of PMView. Bugs in PMView are
listed first, followed by known bugs in OS/2.

PMVIEW BUGS:
There are currently no known bugs in PMView version 0.79 itself. (I
think I may have lost a bug report when my mail dumped, however.) As
beta testers, you should strive to correct this ;-).

OS/2 BUGS:
Everything from here on is a bug in OS/2 and *not* in PMView. Please
complain to IBM about these bugs if you want to get them fixed.

Generically speaking, OS/2 does *not* recover very gracefully if you
run out of swap space. Running *many* copies of PMView while viewing
big images may get you in trouble. (Remember, a 1024x768x256 image
represents 768K of pixel data alone!)

OS/2 GENERAL SCREEN DRIVER BUGS:
If you run under a screen driver that does not support Palette Manager,
you won't get very good results. As of this writing, only the 32-bit
256-color drivers for the XGA, ET4000, and Trident are known to support
Palette Manager. (These drivers are available in the Service Pack or
the latest 2.1 beta.) While the 8514/A may appear to support Palette
Manager (specifically, if a program asks, it will answer yes), I've
heard reports that the 8514/A driver won't actually let you change
screen colors. One way to test this would be to run my PhysColo program
and then see if the screen palette changes when you load a colorful
image in PMView. (Details are available if anyone wants to try this.)

THE UNIVERSAL BUG:
There's a bug in *every* known screen driver that supports Palette
Manager. When you drop a menu down over a window that's using Palette
Manager, the obscured part of the window will later be redrawn with the
wrong colors. This is (partly) why we have the F5 function. 

THE FATAL ET4000 BUG:
If you run a program (*any* program, not just PMView) that changes the
screen palette and then try to move an icon on the OS/2 desktop, YOUR
COMPUTER WILL HANG!!! Be *very* careful if you want to try this out.
This bug is known to occur for ET4000 systems using the SP screen
driver. (Perhaps as a result of my complaining about this bug, it is
fixed in the 2.1 beta. If you're running an ET4000, you may want to
acquire the beta.)

This bug does *not* occur on the XGA. Is there some brave soul willing
to check the Trident for this bug? (If so, PLEASE be careful.)

ET4000 AND TRIDENT SCALING BUGS:
Finally: We've added scaling (under _View _Preferences) to PMView for
the first time. This has been available to Peter for a while;
unfortunately, the ET4000 and Trident drivers do *not* correctly
support scaling images. (They get drawn with the wrong colors.) ET4000
and Trident users, please complain to IBM! If this screen driver bug
isn't corrected by the time 1.0 gets out, we may have to remove scaling
as an option.

Raja Thiagarajan / BUGS.DOC / 2-9-93 release