[comp.sys.atari.st] pfxpak patch

fischer-robert@CS.YALE.EDU (Robert Fischer) (02/15/91)

Pfxpak, the program which packs executables, is great except that you
can't use it easily in a shell script because it makes you press <RETURN>
every time it runs.  To disable this "Feature", you need to make only
a very minor change:

1. Presumably, PFXPAK is packed with itself.  So unpack it with the
command line:
	pfxpak -u pfxpak.ttp pfxu.ttp

2. Starting at byte 520 ($208 in HEX) in pfxu.ttp, you'll find the
following in a HEX dump:

	6100 0308 3F3C 0001 4E41

3. Change the 4E41 at byte 528 ($210 in HEX) to 4E71.

4. Run PFXPAK and verify that it doesn't make you press <RETURN>!

5. Repack PFXPAK, if you wish, with the command line:
	pfxpak pfxu.ttp pfxpak.ttp

This patch disables the GEMDOS call which makes you press a key and
replaces the TRAP #1 instruction with a NOP instruction. 

--- Bob
fischer-robert@cs.yale.edu
-- 
| Robert Fischer                                |
|    Arpanet:    <fischer-robert@cs.yale.edu>   |