TEST0D		Version 1.0

	There has been some talk about the graphics function
0Dh, not working properly.  This is the function to read a pixel
and return it's value.  I read a message that someone left
saying that it always returned a value of 2Eh.

	This program is an attempt to isolate the problem.  This
program will set the screen mode to 5 (graphics 320 x 200) and
write at location 10,10 first a 0, then a 1.  Each time it will
read in the results.  After it turns on the pixel, it will
pause, giving you a chance to see that the pixel is on.  Press
any key and the screen will clear and the results will be
displayed.  The results should be 00  01, the 00 being the read
of the 0 pixel, and the 01 being the read of the 1 pixel.

	My Portfolio is version 1.052, and the program runs correctly.

	If you do not get the correct results, you can use a
patch, FIX0D.  This is a TSR which will intercept the INT10h
pixel read and directly access the graphics memory to obtain a
bit's value.


Bug Reports or Comments to :

BJ Gleason
Thin Air Research
B-607
1600 South Joyce Street
Arlington, VA  22202

Compuserve : 73337,2011
Genie      : BJGLEASON

This program is placed in the public domain.