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dm15bfix.txt
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1994-07-17
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This text was taken from several articles posted on:
ALT.GAMES.DOOM
The "R_ProjectSprite: Invalid frame..." bug in DOOM 1.5b (after using the
`idkfa' cheat and trying to select the shotgun) is probably because the cheat
gives you the `super shotgun' which is available in DOOM2, but not in the
Beta. Use your favourite binary editor to apply the following patch to DOOM.EXE
Find:
B9 09 00 00 00 C7 40 B0 02 00 00 00
Replace with:
B9 08 00 00 00 C7 40 B0 02 00 00 00
^^
Incidentally, the number `09' is the number of weapons the `idkfa' cheat will
give you. If, for some reason, you wish to limit yourself to not using the
plasma rifle and/or the BFG when cheating change this number to 07 or 06
respectively.
While we're hacking 'idkfa', is there any way to keep 'idkfa' from giving
all the colored keys? I sometimes use idkfa in a pinch for ammo but don't
want the keys.
Certainly! As usual, load up your favourite binary editor and prepare to
operate on DOOM.EXE as follows:
Find the sequence:
B9 06 00 00 00 8D 42 44
^^
and replace the marked number `06' with the number of keys you wish to obtain
when using the `idkfa' cheat. Changing it to zero works fine (no, not a
coincidence, I checked). Incidentally, there are six keys: three keycards and
three skull keys.
And while we are on the subject of cheating, the following patch enables
the cheat keys in NightMare mode (haven't actually tried this one, but there
is no reason why it shouldn't work ;-)
Find: 0F 85 29 03 00 00 83 3D 70 82 02 00 04
Replace: 0F 85 29 03 00 00 83 3D 70 82 02 00 45
^^
Enjoy,
Elias.
ep104@cus.cam.ac.uk.