Master System hacker

[D4M28]

Hi there everyone does anyone have a hacker for the sega master system as im stuck on some games and id like to patch them with cheats so they are stuck inside them like the Game Genie Game Patcher v0.9 does please get back to me soon thanks

[eadmaster]

It seems that uCON64 support patching Game Genie codes in SMS ROMs
(See the manual here: http://ucon64.sourceforge.net/ucon64/readme.html)

However i could not find any GG codes around the net for the SMS
nor i've found a PAR-2-GG code converter.

[VisitntX]

You can't convert PAR codes to game genies. GG are for ROM locations, and so it can't access the RAM as PAR does. But PAR seems to be able to access both, RAM and ROM. There was never released a game genie for the SMS or the Gamegear. What you can do is hack the code and then patch the ROM file if you want them always active the cheats.

[LiquidManZero]

Erm, it might be worth noting that uCON64's GG patching doesn't seem to work very well. I've had bad luck even with codes known to work on a real GameGenie so it might not work even in cases where it should.

But yes, encrypting a PAR code to GG is only going to work on an emulator if at all.

[eadmaster]

Wow, i've finally found a method to statically patch some game genie codes with ucon64 into an SMS ROM!

Basically, i take a ROM patch istruction from Meka.pat (format "ROM[AAAA] = VV"), then i encode the GG code with "ucon64 --sms --gge=AAAA:VV", and finally i apply the obtained GG code with "ucon64 --sms --gg=XXX-YYY [romfile]".
I've tried a few codes, and it seems to work.

I guess as long as you use ROM patch instructions (not RAM/MEM) GG codes should work correctly!

UPDATE: I tested more ROMs now and i can confirm that this method works perfectly!
I attached some IPS patches i've created using codes published here.
Now i'm definitely looking for more Meka.pat cheats...

[eadmaster]

... But PAR seems to be able to access both, RAM and ROM.

If that is true, how can i check if a PAR code refers to ROM or RAM?
I guess there must be some address ranges that refers to different targets.

[Whipon]

=>

Best you can do is to hack the games with MESS.
Find some RAM addresses, then use them with MESS to hack the game.
You'll have more freedom to hack the game, since you will not be limited to codes created by other people.

[eadmaster]

Best you can do is to hack the games with MESS.
Find some RAM addresses, then use them with MESS to hack the game.
You'll have more freedom to hack the game, since you will not be limited to codes created by other people.

By now i dont like playing with debuggers&co.
I just want to take some ready-to-use codes, convert them in GG format, and statically patch ROMs with ucon64.