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1995-02-16
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• Cheats − Here are some cheats for various games. (I suggest that if
you do any of these, you do not use the original disc, but rather work
on a copy. Ed.)
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Cheat for Minerva’s BattleTank If you run the following program you
will have however many lives you specified at line 20:
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program segment missing
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Cheat for 4th Dimension’s Inertia - Type in the following and then each
time you lose a life, you won’t!
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program segment missing
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Cheat for 4th Dimension’s Man-At-Arms − The passwords for the 3 stages
are: INCUBUS, STRANGE and PULSARS
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progam segment missing
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When you run this program, it will allow you loads of lives, punches and
lots of energy. Be careful not to set any of the variables at &FF
because it does tend to make the program crash!
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Cheat for Minerva’s RedShift − Once the game has loaded, type the
following:
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PHASING GERALD
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Note: When you pressed <11>, the screen will change to the Help screen.
Take no notice of this and keep typing the rest of the words in.
Remember that there is a space between the two words!
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If you have entered this correctly, you will hear a bleep. Then just
press <1> or <2> to play the game and when your Energy is low just press
<E> and you’ll see the energy level is full again! Also, when your
TurboEnergy is low press <T> and you will be back to full strength!
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Cheat for 4th Dimension’s E-Type − The following will give you as many
minutes as you like to get round each track:
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program segment missing
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Type in the above and you’ll have all the time you want to round each
track! Mark Faulkner.
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• DOS RAM Disc − In DOS, it is possible to set up a RAM disc and indeed,
for many applications, it is vital to do so if one does not have the
luxury of a hard disc. Regular DOS supports a maximum of 640 kbytes of
RAM, although we did learn about Extended Memory in last month’s
Archive. The problem with a DOS RAM disc is that the memory is actually
taken from the 640k system RAM. At least it certainly is with current
versions of the PC Emulator.
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A few months ago, an application appeared on the magazine disc called
!PCRamDisc. This made use of the fact that the PC emulator can support
up to two “hard disc” partitions and that one of these could be in the
Archimedes RAM disc filing system. (In fact one of these can be on an
ADFS floppy!). In this way, a large RAM disc can be used within DOS
which does not take anything from the regulation DOS 640k. This seemed
a really good idea and I was eager to try it out.
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The program which produced the DOS partition is a variation of the Acorn
program to construct a hard disc partition but with the filing system
and paths changed and with the allowed partition sizes also changed to
more convenient values. Having created such a partition, the !Run2 file
must be modified to tell the machine where the partitions are.
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Then, when the emulator is run, the new “drive” must be initialised
using FDISK and then formatted using FORMAT. This part really annoyed
me as I had to do it each time I used the emulator, and I kept for
getting what to do.
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It seemed a good idea to create a ready-formatted and initialised
partition before entering the emulator. I am sure someone could write a
program to do this, but not me. Obviously, it would be silly to store,
say, a 2 megabyte partition in readiness; this is just a waste of space.
However, I discovered that an initialised, formatted, but otherwise
empty DOS partition of one megabyte capacity could be compressed to just
over a kilobyte using Archimedes ARC, a Public Domain file compression/
decompression program written by David Pilling.
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On the magazine disc there is an application called !PCRamDisk (note the
different spelling). This contains a compressed but empty DOS partition
which is decompressed into the RAMFS before invoking the PC emulator.
Please read the !Help file before using it as the !Run2 file of the
emulator is overwritten when the application is run. Brian Cowan.
4.04