Notes on Doom V1.2 compared to Doom v1.1
These are Ian Mapleson's notes on the differences between Doom v1.1 and v1.2:
Notes on Doom V1.2 compared to Doom v1.1.
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Last Change: 25/Feb/95
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Some things about v1.2 compared to v1.1:
1. v1.2 has some nasty bugs cencerning the control of your character.
If you have a PS/2 mouse setup, this is almost certain to occur, but
it is far more widespread than this. Symptoms: your character goes
crazy, shooting all over the place, moving erratically, the etc..
This problem has been _fixed_ in versions 1.666 and later of Shareware
and Registered Doom.
You can ftp Shareware Doom v1.666 from many ftp sites (email me for the
detailed help file on how to ftp Shareware Doom v1.666). Patches to
upgrade v1.2 to v1.666 (Shareware or Registered) will be in the doom/id
directory on these sites.
Some Doom ftp sites:
ftp.cdrom.com [192.216.222.5] California, USA.
/pub/doom
Mirrors:
ftp.idsoftware.com Texas, USA. Id Software's home
/tonsmore/doom site. Has lotsa other stuff
besides Doom.
ftp.luth.se [130.240.18.2] Sweden (UK users use this site,
/pub/doom 6 times faster than dungeon!)
flinux.tu-graz.ac.at [129.27.2.237] Austria
/pub/doom
ftp.orst.edu [128.193.2.13]
/pub/doom
nctuccca.edu.tw [140.111.1.10] Taiwan
/PC/games/DOOM
ftp.sun.ac.za [146.232.212.21] South Africa
/pub/msdos/doom
ftp.dungeon.com [193.130.144.1] England
/pub/msdos/games/doom
ftp.demon.co.uk [158.152.1.44] England (1.666 patch files only)
/pub/ibmpc/games/id
Look in the ...doom/id directory. Patches to upgrade v1.2 to v1.666
(both registered and shareware) should also be in this directory on the
above sites.
In the meantime, here is some extra info about the bug and a temporary
fix if you can't, for some reason, get v1.666...
As someone who emailed me about the bug said:
"It's not limited to the PS/2 mouse or even to the mouse in
particular. There's some bug with the input device. The bug can
happen with *any* mouse, or even if you are playing only with the
keyboard."
However, PS/2 mice are most prone to the problem.
Running Doom from windows is apparently one way to solve the
problem. I now have a help file available for anyone who wishes to
know how to run Doom under windows. If you would like a copy, please
email me.
One definite way to fix the problem (if it's the mouse that's acting
crazy) is to use an adaptor to plug the mouse into the serial port,
or just use a serial mouse. This method was successful for me, and
has been for many others as well.
Some people have found that using a different mouse driver solved
the problem, or at least greatly lessened it. One mouse driver
particularly mentioned a lot is the GMOUSE mouse driver. This driver
can be obtained via ftp from:
oak.oakland.edu
in the directory:
/pub/msdos/mouse
and the file is called:
gmous102.zip
Don't forget to enter 'bin' before you enter 'get'!!
For those without ftp, I can email you the driver.
Someone said to me that this driver works best when configured for
two button mode, in that the bug is still present when set for three
button mode. Thus, if you're used to using a 3 button mouse, try (a)
using just the left and right buttons, (b) setting the driver for a
two button mouse, and (c) maybe use ALT for strafing instead of the
middle button (or whatever it was that you used the middle button
for).
As to why the PS/2 mouse setup is particularly problem prone, I
spoke to someone who knows a lot about pc's, and was invloved with
their design years ago. He said:
"Also, PS/2 mice are a marginal idea at best--they suffer from
many of the same problems as do PC joysticks--the interface
was built with a 6MHz cpu in mind -- not 33/66MHz PCs!
There are several areas were improper matching of impedance,
etc. can cause various forms of aliasing effects to occur."
Keyboard control problems:
About the only tip I have here is this:
- if your character goes nuts, try pressing the key that would
normally be used to cause whatever the character is doing; e.g. if
the marine starts to run forward out of control, people say that
whacking the 'forward' key should stop the uncontrolled motion.
2. Saved games from v1.1 are NOT compatible with 1.2. This ALSO applies
to .lmp demo's made under v1.1. In both cases, this applies to the
Shareware version AND the Registered version. ALSO: if you are
reading this BEFORE using a 1.2 patch file, be warned that all the
old saved game positions will be destroyed, so take backups if you
want to keep them!
3. The cheats still work, but not in Nightmare mode (only idclev and
iddt still work in Nightmare mode).
4. All version below v1.666 have various bugs in the sound code. If you are
experiencing sound problems, it is recommended that you upgrade to v1.666
or higher. The latest version is v1.9.
5. I have been informed that Doom v1.2 will NOT run under OS/2 if you are
trying to use a soundcard. If this problem occurs for you, turn off the
sound using the setup program.
6. v1.2 contains some new secrets! One is on E1L1. Where the others are, I
will not say... :)
Hope this helps.
Ian.
The Doom Help Service (DHS).
Co-ordinator of rec.games.computer.doom.help.
WWW addresses:
Home page: http://www.cee.hw.ac.uk/~mapleson/
DHS: http://www.cee.hw.ac.uk/~mapleson/doom/doom.html
Help Archive: http://www.cee.hw.ac.uk/~mapleson/doom/doomhelp.zip
Dissertation: http://www.cee.hw.ac.uk/~mapleson/diss/diss.html
SGI Stuff: http://www.cee.hw.ac.uk/~mapleson/sgistuff/sgindex.html
MIPS T5 R10000? "It's quicker than something quick in 'quick' mode. :)"
- Grant Middleton, Marconi Simulation.
Ian C. R. Mapleson BSc.,
Oceans Systems Research Group,
Room G86,
Department of Computer Science and Electrical Engineering,
Heriot Watt University,
Riccarton Campus,
EH14 4AS,
Edinburgh,
Scotland,
United Kingdom.
email to: mapleson@cee.hw.ac.uk