MAME CHEATS Release Date: 22 Aug 2008 (Base release for MAME 0.127) {Based purely on the cheats for 0.126}
SECTIONS
-======-
Simple
1. Basic Instructions on enabling cheats in MAME
2. Cheat Description Meanings
3. Cheat Ordering
Advanced
4. **N/A** Cheat Engine Commands (to customise the cheat UI) **N/A**
5. **N/A** Cheat Format Information **N/A**
6. **N/A** How to Pre-Enable cheats **N/A**
7. Dynamic Cheat Finding method
Credits/Lists
8. General Credits
9. Games utilising ROM cheats with credits
10. Games utilising EEPROM/Mapped Memory cheats with credits
11. Games utilising Forced Range cheats with credits
12. Games utilising Dynamic (Relative Addressing) cheats with credits
13. Games which may use the same cheats
Work to be done
14. General list of work to be done
------------------------------------------------------------------------------
SECTION 1 Basic Instructions on enabling cheats in MAME
------------------------------------------------------------------------------
What to do with the cheat.zip file :-
Step 1 (what to do with the cheat.zip file )
============================================
First of all do NOT unzip the cheat.zip file - it will work just fine as a zip,
it contains over 7180 xml files so unzipping it is not advised.
First of all unzip/un7z the still packed cheat.zip file into the same directory
that contains MAME.EXE (All platforms apart from Mac OS 9/X ).
For MacMAME the cheat.zip file should be in:-
${HOME}/Documents/MacMAME User Data/Misc Support Files
For MAME OS X (not SDLMAME OSX!) the cheat.zip file should be in:-
${HOME}/Library/Application Support/MAME OS X
Step 2 (Enable the MAME Cheat Engine)
=====================================
As standard the MAME Cheat Engine is turned OFF, there are several ways of
turning it ON depending on which platform you are running MAME on.
MAME: This is the standard MAME command line compile, go to your MAME
directory open up the MAME.INI file with a text editor (the one you
are using to read this will probably do!).
Find '### Mame CORE misc options ###' and change 'cheat 0' to
'cheat 1'. If you have no INI file then just start MAME from the
command-line with the -createconfig option eg. 'MAME -createconfig'.
If you manually use MAME every time from the command-line you can also
just add '-cheat' to the command line.
MAMEUI: This is the MAME with build in frontend compile for Windows. Go to
the Options Menu, and select "Default Options". Go to the
Miscellaneous tab and check the box that says "Enable Game Cheats".
DMAME: This is the DOS MAME compile, go to your MAME directory open up the
MAME.CFG file with a text editor (the one you are using to read this
will probably do!).
Find 'cheat off' and change it to 'cheat on'. If you have no CFG file
then just start MAME from the command-line with the -createconfig
option eg. 'MAME -createconfig'. If you manually use MAME every time
from the command-line you can also just add '-cheat' to the
command-line.
UNIX: For the UNIX/LINUX compiles just follow the instructions for DMAME
the DOS compile.
OS9/X: From the front-end, go to the Misc tab, and check the box that says
"Allow Cheats".
Step 3 (Cheat!)
===============
In-game press TAB and follow your nose......
Left and Right cursor toggles cheats ON and OFF, ENTER turns on one shot cheats
and SHIFT ENTER displays the cheat comments if there are any (the ON/OFF/SET
will be in reverse video if there are any comments).
------------------------------------------------------------------------------
SECTION 2 Cheat Description Meanings
------------------------------------------------------------------------------
GENERAL NOTES ABOUT CHEAT DESCRIPTIONS AND WHAT THEY MEAN:
----------------------------------------------------------
NOTES: The cheat descriptions use the following terms, this is what they
actually mean:
Get+Now! means the cheat is a type 00000001 cheat and so it is a temporary cheat -
it changes the memory and then deactivates. Type 01 is ideal for
getting a particular weapon or feature, also needed for a Finish
Level Now! cheat.
Always means the cheat is permanent (several cheat types) idea for always
having a certain weapon or feature eg always have 3 rainbows on
Rainbow Islands.
Infinite means exactly what it says - you will have an inexhaustible supply of
the named item be it lives, time, ammo or something else. On some
rare occasions you may need to deactivate the cheat before you can
finish a level, if this need to be done you will see F6 at the end
of the cheat description.
Select current level - Select a level and you can progress to it by losing a
life. You should only activate this type of cheat
during game play or according to the comments.
Select next level - Select a level and when you complete the current level you
will progress straight to the selected level. You can also
activate this on the title/attract screens though the
effects cannot always be guaranteed! (you will either
start on the selected level or the next level after the
selected one or level 1). A far better method if you want
to select the starting level from the title screen is to
use the method that I thought of for Metrocross. See
Metrocross remarks for info.
Select Score - This cheat allows you to select your score or/and the other
player's score, ideal for sports games where you need a certain
score to win and/or progress. It must ONLY be activated during
game play. Also note the score may not display correctly until
the score has changed properly!
------------------------------------------------------------------------------
SECTION 3 Cheat Ordering
------------------------------------------------------------------------------
This is how I order the cheats - I try and stick to it as often as I can.
Some games don't conform to this standard either because it's better as is or
the cheats were done a while ago and I haven't changed them. DO NOT report any
games that don't follow this standard - it's pretty low on the list of
priorities right now.
OVERALL CHEAT ORDER
-------------------
gamename in format '; [ long game name ]'
section1
section2
section3 (if applicable)
section4
WHAT'S EACH SECTION ABOUT?
--------------------------
Section 1 contains all the cheats valid for all players. Infinite Credits will
come first normally.
Section 2 contains cheats for individual players, split up so that all PL1
cheats are together and all PL2 cheats are together. Normally there will be the
same cheats for each player and the order of the cheats should be the same as
for the other player.
Section 3 contains cheats that are hard to button-hole and have fairly obscure
effects on the game that only the die-hard player of that game may really want.
These sort of cheats can often be merged into section 2, though in some
circumstances the sheer number of these cheats will seriously clutter out the
normal everyday cheats (section 2). In that case they should be separated into
another section and the PL1 / PL2 separation in that section should be maintained
if possible.
Section 4 contains any none cheat related things. Eg. Sound test timer and region
switch codes.
WHAT'S IN EACH SECTION
----------------------
The normal order of cheats will be if there is no PL1 or PL2 specific cheats.
If a cheat is specific to all players it will promote it up the list.
Infinite Credits
Infinite Time (if 'Finish this Round Now!' is worthwhile it should
directly follow this cheat)
Infinite Lives
Infinite Energy (if 'Drain all Energy Now!' is worthwhile it should
directly follow this cheat)
Infinite Ammo
Infinite Bombs
Invincibility (if Invincibility doesn't turn off after a short while of
disabling it then there should be separate 'ON' and 'OFF'
cheats)
Always have this weapon
Get this weapon Now!
Play with this character Now!
Select starting level
Select current level
Select next level
SPACING/BLANK COMMENTS
----------------------
Blank Comment cheats should be added to improve the readability of the cheats
in the cheat engine were appropriate.
There should be a blank after section 1 if section 2 has 3 or more cheat entries
for each player OR if section 1 has itself got three or more cheat entries.
If there are 3 or more cheat entries for each player in section 2 then the
entries for each player should be seperated with a blank comment.
If section 3 exists it should ideally be preceded by a blank comment.
If section 4 exists it should ideally be preceded by a blank comment.
------------------------------------------------------------------------------
SECTION 4 Cheat Engine Commands (to customise the cheat UI)
------------------------------------------------------------------------------
The cheat engine has recently been radically changed, this section is
currently no longer applicable.
------------------------------------------------------------------------------
SECTION 5 Cheat Format Information
------------------------------------------------------------------------------
The cheat engine has recently been radically changed, the cheat format here is
no longer applicable. Information about the new format will follow some time
in the future.
------------------------------------------------------------------------------
SECTION 6 How to Pre-Enable cheats
------------------------------------------------------------------------------
The cheat engine has recently been radically changed, the method given here is
no longer applicable. Stay tuned for the new method (which is a LOT easier).
------------------------------------------------------------------------------
SECTION 7 Dynamic Cheat Finding method
------------------------------------------------------------------------------
Dynamic Cheat Finding method by Pugsy
-------------------------------------
From the start, this is presuming you are using a debug MAME. I'm using samsho2
as an example and I am looking for infinite energy for PL1 - the method is easy
to alter for different games and/or other things (this is mainly a method used
for neogeo games - the only real system that utilises dynamic addressing for
'useful' locations). It's not a method for beginners, it assumes cheat finding
skills, a basic understanding of hexadecimal addressing and an ability to
decode my waffling.
1. Start MAME as you would normally - don't forget you must use the debug MAME
build with either -debug on the command-line or DEBUG 1 in the ini file.
2. You will find that after a short while MAME will be on the debugger screen,
at this stage just press F12 to start the game. [REMEMBER F12 in the
debugger will return you to the game]
3. Commence play
4. Start a Energy Search and reduce the results using standard methods. In the
example I reduced the results to 2 possibles 100AC6 & 10373B, by using
watches I can discount 100AC6 as it's the time location. So that leaves us
with 10373B 80 = Full Energy. NOTE: You have to find the value as quickly as
possible because the location will change the next time the level changes,
so you would have to start the search from the beginning. You can test the
address you find by poking it directly if it's the correct location you will
find it will have the desired affect on that level.
5. Press the tilde key (the tilde key is the key under Esc and about TAB and
the the left of 1). You will now be in the debugger, remember the fact that
we found the address 0010373B in step 4 (Note the preceding 0s - we will
need them).
6. Press TAB 3 times so that the cursor is in the address window. Now press S
to commence a search and type in the value as per step 5...but drop the last
byte as that will be part of the index. So in this case we would type in 00
10 37, then press RETURN to execute the search - you can repeat the search
by pressing S and hitting RETURN (the last search values are still set).
For every search result note down the address, you can safely ignore any
results in ROM locations or where it crosses word boundaries (ie. it shows as
XX00 1037 instead of 0010 37XX). In this example you will find that
S 00 10 37 only returns one ROM location at 00003680, so we can safely
ignore it. However, there are no other occurrences so we are goosed.....or
are we?
7. If there are no possibilities then remember that the location we are looking
for contains an address that hopefully points to a page of memory limited in
size. In most cases this seems to be no greater than 256 bytes and is mostly
forward indexed (+ve rather than -ve). So assuming that 10373B is the
extreme case it is 256 bytes away from the start of the memory page base
location, then the base location of the page would be 10363C. So we need to
repeat Step 6 but this time with S 00 10 36 as the search instruction,
ignoring ROM locations and word boundary crossing, from this we get the
Home
Help
Search
Login
Register
Send this topic
Print
Topic: Cheat trouble with mame 128 (Read 9725 times)
