
            Some useful hints on using the v1.2 patch files.
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

                         Last Change: 20/Jan/95
                         ^^^^^^^^^^^^^^^^^^^^^^


(before I begin, note this: running the patch file will DELETE your
old-version saved games, so back them up if you want to keep them, just
in case. Anyway...)

Users of Doom v1.1 can not upgrade directly to v1.666. You must first
upgrade by using the v1.1 to v1.2 patch and _then_ from v1.2 to v1.666
using the v1.666 patch.

This applies to all the various patches. The latest version of Doom is v1.9
and there should be patch files on the ftp sites shown below to allow
upgrading from v1.666 to v1.9 and probably from v1.7 to v1.9.

Where to get these patch files:

They are available by ftp from:

          Site              Location             Directory to look in
          ^^^^              ^^^^^^^^             ^^^^^^^^^^^^^^^^^^^^
ftp.cdrom.com            Calif., USA.    pub/doom/id
ftp.orst.edu             USA.            pub/gaming/doom/id
ftp.iglou.com            Kentucky, USA.  doom/id
ftp.luth.se              Sweden.         pub/doom/id
nctuccca.edu.tw          Taiwan.         PC/games/DOOM/id
ftp.sun.ac.za            South Africa.   pub/msdos/doom/id
ftp.demon.co.uk          United Kingdom. pub/ibmpc/games/id


The files of interest are:

  dm1_2rpt.zip  -  Update patch from v1.1 Registered to v1.2 Registered.
  dm1_2spt.zip  -  Update patch from v1.1 Shareware to v1.2 Shareware.
  dm1666rp.zip  -  Update patch from v1.2 Registered to v1.666 Registered.
  dm1666sp.zip  -  Update patch from v1.2 Shareware to v1.666 Shareware.
  dm1666sw.zip  -  The complete v1.666 Shareware game.

(or others if you seek to upgrade further. I'm only listing the ones relating
to v1.2 and v1.666 here)

If you decide to ftp these files, make sure you download in binary mode
(enter 'bin' at the prompt). Users of Kermit should _especially_ make sure
that they have their terminal settings correct as this can often cause
problems.


This file concerns the patch from v1.1 to v1.2. This particular patch has
some problems with it, thus the existence of this help file. However, very
few problems occur with the v1.2 to v1.666 patch which seems to work fine
for most people.

Please read ALL of this file before attempting to use the patch; you might
just save yourself a lot of hair pulling...

To use the v1.1 to v1.2 patch, place the patch files in your Doom directory
and enter:

  patch

But before you do...

                           Before you try...
                           ^^^^^^^^^^^^^^^^^

If you are about to use the 1.2 patch, or if you have already tried but
are encountering difficulties, then the following hints may help:-

The patch wants a clean version of the v1.1 game to update with. Any
modifications made to doom.exe or doom.wad will halt the patch. If you
have problems, try re-installing the v1.1 game from scratch and running
the patch again.

If you've used the use1_94.bat file to switch to the 1.94 DOS extender,
then enter:

  use1_95

and try the patch again.

(Thanks to Chris Pollard (Xmastree@Sound.Demon.Co.UK) for the
following tip concerning FILE_ID.DIZ...)

I have been told that the patch needs the original FILE_ID.DIZ. If
you just copy the patch files from the unzipped file straight into
your Doom directory, then the original FILE_ID.DIZ will be overwritten.
Hence, try unzipping the patch zip file somewhere else, and then
renaming the FILE_ID.DIZ from the patch zip file to FILE-ID.DIZ or
something, and then copying them to the Doom directory. This way, the
patch program will find the original FILE_ID.DIZ. Then, afterwards,
rename the new DIZ file back to FILE_ID.DIZ.

Alternatively, only copy the three files that begin with 'patch' into your
Doom directory, as the patching process does not actually need the
FILE_ID.DIZ file that comes with the patch zip file.


If you still get an error, try entering this instead:

  patch -ignoremissing

This might work, but not always. As someone else who mailed me said:

"...The patch computes a checksum of the original files before touching
them and complains if the checksum doesn't match. Using the option
-ignoremissing is OK if an original unimportant file is missing (e.g.,
LICENSE.DOC). However, if the "bad checksum" complaint comes from one
of the important files (DOOM.EXE, DOOM.WAD), using the above option
will simply prevent the old file from being updated and the game will
still not work.".

It appears there are still some problems out there. If anyone has any
other tips on how the patch can be made more likely to work properly,
please email me so that I can update this help file.

Note to Australian players: it has been mentioned that some players
received an older version of Doom 1.1 that the patch does not work
with. If, after trying everything, the patch still does not work, then
contact your dealer/supplier. They should be able to help.


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

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

