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RBBS in a Box Volume 1 #3.1
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RBBSIABOX31.cdr
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prol
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postcard.fix
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1987-12-30
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2KB
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36 lines
DOS ERROR FIX for POSTCARD December 23,1987
Purchased a little program called POSTCARD for the IBM-PC, unfortunately
it has a couple of problems. The first, and major one is that the program
checks the DOS version. So.... If you are using DOS 3.3, it won't work.
A call to the factory was not much help either, except to acknowledge that
it won't work with 3.3. What you get is an INCORRECT DOS message when the
program starts.
There is hope!
To make the program work with DOS 3.3, you need to make a few changes to
the POSTCARD.EXE file. There are a couple of ways to do this.
#1 Using a program that allows you to patch or change the code like DEBUG
does with .COM files. At location 905C HEX, change the original code
B4 30 CD 21 to B8 03 16 90.
#2 Using a file/disk patch program like MK or FM. This time do a search
for the B4 30 CD 21. You should find the first one around sector 98.
Don't change this first "FIND" but continue to look for the sequence of
HEX codes. You should find the one needing a change around sector 99.
Once found, be sure to switch to the HEX edit mode, and change the code
as shown in #1 above, OLD= B4 30 CD 21 NEW= B8 03 16 90
That will take care of the DOS problem, the other one is.... that it likes
to run from your A drive. Since it does run a little slow, I just moved all
the files to my VDISK and did an ASSIGN A=F. This makes my RAM disk F look
like the A drive as far as the program is concerned.
It is a cute little program for making some STRANGE looking postcards.
ENJOY