New Print Shop bug

[gaw717@www710.gsfc.nasa.gov (Geraldine Wright)]

Several months ago I discovered a bug in the New Print Shop CONVERT program, 
which converts graphics, fonts and borders from the original Print Shop format 
to the New Print Shop format. This bug effects the conversion of border files. 
I have now figured out the patch that needs to be made to fix the problem. I 
intend to write an Applesoft program that applies the patch. In the mean time I 
will discribe how to fix it using byte zapping.

First, a description of the bug. The CONVERT program incorrectly stores 
information about the background behind the border. When you choose a border, 
you have the option of setting not only a border color, but a "Behind Border" 
color, so that the border can be printed with a background color. The border 
files contain information about which pixels should be colored with this 
"Behind Border" color. Because of the bug, New Print Shop borders which have 
been converted from original Print Shop will have unwanted white stripes in the 
background when you set the "Behind Border" color to something other than 
"Clear".

Now the fix. Be sure you do this fix to a copy of your NPS disc, not to the 
master disc. That way, if something goes wrong, you have not trashed your 
master disc.

It is easiest to use a program with a block editor, such as ProSel or 
CopyIIPlus, Load up the CONVERT program into the block editor. The bytes which 
need to be modified will be at $1A4F, $1A57 and $1A61. These bytes are 
currently $8B. Change all three of them to $8A. Write the modified block back 
to the disc.

If you don't have a block editor, you can load the program into memory, change 
the bytes while in the Monitor or by using POKE's, and store it back on disc. 
If you are running the program off a 3.5" or 5.25" copy of the original discs, 
you will find the program under the PS subdirectory on your program disc. Do a 
standard BLOAD to get the program in memory. It will load at $800. If you have 
installed New Print Shop on a hard disc, you will still find the program under 
the subdirectory PS. However, on the hard dics version, the program will have 
the file type $F5. So use the command

BLOAD CONVERT,T$F5,A$800

to get it into memory at the proper place. Once the program is in memory, you 
can go into the monitor and fix the bytes that are in error. They will be at 
$224F, $2257  and $2261. Change them from $8B to $8A. If you want to use POKE's 
from the Applesoft prompt, do the folling commands

POKE 8783,138
POKE 8791,138
POKE 8801,138

Now that the bad bytes are fixed you can put the program back on disc. To get 
it back on the 3.5" or 5.25" disc, use the following command

BSAVE CONVERT,A$800,L$366A

To get it back on the hard disc, use the following command

BSAVE CONVERT,T$F5,A$800,L$366A


-- 
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Geraldine Wright
gaw717@www710.gsfc.nasa.gov
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"Big, fat hairy deal!"  -Garfield