Gameshark not working (all the methods I tried), and Limit of 4 Action Replay max codes?

[gukingofheart]

I tried different calculations, but none of them seem to give me infinite lives.
030042BC = Ram Address

Method 1, I tried
42BC divide by 2

63000DAD 00000009 (Does not work)

Method 2, I tried
08069DC2:3800 (infinite life code, debugged)

69DC2 divide by 2

WORKS for Action Replay v3

EA9C5589 95AACF2C
14551F08 02AD46B7

60034EE1 00003800 (does not work)
68034EE1 00003800 (also, does not work)

I also took each Raw code, and then encrypted it, and tried those.. also seemed to fail.
PS. I only had a cheat for lives only, incase if another code was overriding.

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For Action Replay V3. Am I mistaken, or is there a limit of 4 Rom Patch codes? 18, 1A, 1C, 1E
I had a working "Always Keep shroom", "Always Keep Flower", "Always Keep lives" HOWEVER, only one worked at a time. I got more to work, when I changed the 18 to 1A, for one code.

If this is true, I understand why most stick to just freezing values with codebreaker for most things.

 

[TechieSaru]

For ram codes, you do NOT divide by 2. You only do the division for ROM patch codes. And yes, there is a hard limit of 4 ROM patch cheats for ARV3.

Also the ram cheat formats are as follows:

ARV2
Naaaaaaa vvvvvvvv

ARV3
0Naaaaaa vvvvvvvv

N is number of bytes
a is the address
v is the value to write to address

For ARV2 N is 0 (1 byte), 1 (2 bytes), or 2 (4 bytes)

For ARV3 N is 0 (1 byte), 2 (2 bytes), or 4 (4 bytes)

 

[gukingofheart]

I understand the byte part after experimenting.. so this helps... but still don't get why I can't get the gameshark v2 working for my life code, with the all the combinations I tried.

Maybe I'm asking the wrong question... How does one even make a gameshark v2 in the first place.
I found this infinite life code, and it gives me 99 lives... but I don't understand how this code was even made.
Did they use a debugger (if so, doesn't even look like the address matches)

Infinite Lives
a1ac8e02
98d54dbd

I learned that, it's maybe better just to do CODE format, because there's no rom patch limit.

 

[TechieSaru]

The code you posted is in V3 format. Also, it's been encrypted. I forgot that there's a slight quirk in the V3 format. The 3rd digit from the left in the address in the raw code determines which ram bank is being written to followed by the 4 or 5 digit address. A value of 2 is EXWRAM which is in the range of 02000000 - 0203FFFF and a value of 3 is IWRAM which ranges from 03000000 - 03007FFF.

The V2 rom patch cheats at least can be used without a limit on emulators AFAIK. Not 100% about the V3 format.