Game Genie cheat codes, use with znes

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salvadorc17
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Game Genie cheat codes, use with znes

Post by salvadorc17 » September 10th, 2015, 11:48 pm

Hey, i just have found this page, have some game genie codes that allow some prince of persia snes cheats, check it: http://www.gamegenie.com/cheats/gamegen ... ersia.html

The most interesting feature was to disable the fall damage, that way you can go down to precipice without dead (except if there are spikes)

David
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Re: Game Genie cheat codes, use with znes

Post by David » September 13th, 2015, 9:55 am

These are also listed on PoPUW: http://popuw.com/snes.html (scroll down)

It would be interesting to see what exactly they do.
I.e. what memory address is changed to what value.

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Kaslghnoon
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Re: Game Genie cheat codes, use with znes

Post by Kaslghnoon » September 13th, 2015, 5:25 pm

David wrote:These are also listed on PoPUW: http://popuw.com/snes.html (scroll down)

It would be interesting to see what exactly they do.
I.e. what memory address is changed to what value.
There is a utility that can convert Game Genie code for various platforms:
http://www.romhacking.net/utilities/23/

If I remember correctly, a Game Genie code for SNES only modifies one ROM address per code, while a PAR (Pro Action Replay) code only modifies one RAM address per code.

Prior to releasing The Quiet Levels, I disabled the functionality of most (if not all) Game Genie codes by making their offsets obsolete within the ROM.

salvadorc17
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Re: Game Genie cheat codes, use with znes

Post by salvadorc17 » September 13th, 2015, 9:54 pm

Prior to releasing The Quiet Levels, I disabled the functionality of most (if not all) Game Genie codes by making their offsets obsolete within the ROM.
What do you mean disabled, i still can use this codes with znes and any modified room using the prince snes level editor, no problems, i have even tried invencibility when falling, to allow reach certain level areas for fun...

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Re: Game Genie cheat codes, use with znes

Post by David » September 21st, 2015, 7:12 pm

Kaslghnoon wrote:There is a utility that can convert Game Genie code for various platforms:
ZSNES also displays the meaning of the code after it was added.

Here is what I found out:

Code: Select all

1.     01:E9D7 $80 + 01:E9D8 $0A (Freeze timer)
2-9.   01:ED4B $NN               (Start with N health points)
10.    01:CF83 $9C               (Non-fatal injuries do no damage)
11.    01:AA52 $2E               (Non-fatal falls do no damage)
12.    01:AA6D $02               (Non-fatal falls do 2 points of damage instead of 1)
13.    01:AA4D $80               (Falls do no damage--except onto spikes)
14-19. 01:8B4D $AD + 01:80A7 $NN (All enemies have N health points)
20.    01:8B53 $9C               (Enemies drop dead immediately)
21-39. 03:9C3A $NN               (Start on level N)

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Re: Game Genie cheat codes, use with znes

Post by salvadorc17 » September 22nd, 2015, 9:44 pm

David wrote: ZSNES also displays the meaning of the code after it was added.
That code means that those cheats can be enabled by hex editing?? will be good to update that info..

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Re: Game Genie cheat codes, use with znes

Post by David » September 26th, 2015, 4:25 pm

salvadorc17 wrote:That code means that those cheats can be enabled by hex editing??
Yes, but remember, the offsets are written differently: 01:#### = x0#### and 03:#### = x1####
For example, "03:9C3A $NN" (Start on level N) becomes "x19C3A to $NN".

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Re: Game Genie cheat codes, use with znes

Post by salvadorc17 » September 29th, 2015, 9:42 pm

Maybe update that info into hex edit guide??

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