Cheat Engine

[JigsawKiller]

Hello! I have problems with finding the address of the variable that holds the x position of mega man in Mega Man NES game! I have tried to look for all types of variables but only found a float, 2 doubles and a 4 bytes value that change when my x position changes. The 4 bytes value is changing suddenly from 250 or so to around 20-40 million when I shoot or when I am hit by an enemy. These are the values that I have discovered that change when my x position changes. You can ignore the "Health" value.
If anyone can find me the X position of Mega Man, I would be very grateful. I am using the FCEUMM core for emulating mega man NES.

[Dark Byte]

go to settings and enable 2 byte big endian

or maybe it's just a 1 byte value

[JigsawKiller]

The processor used for NES is little endian. Also, I looked at the memory view, and found out why the 4 bytes value is so big after I shoot.

As the image shows, the X position must be a combination made of the first byte from the CA6B00 address and another byte somewhere in this memory view. Another byte I saw was changing based on the speed, but that doesn't really help me. If you have any other suggestions, I am glad to hear them!

[Dark Byte]

I'd say it's a 1 byte value then and the bytes after it might be timers or something for when you can shoot again ?

nes screen coordinates are 256x240, so a 1 byte value is enough for just the x coordinate.

Perhaps there's another variable that specifies what x coordinate inside the map itself

[JigsawKiller]

I managed to find the other byte. Apparently, the first byte that I found out was an offset, since it went only to 255 and then back to 0, but anytime I was going from 255 to 0, some other byte was increasing to 1 and vice versa when I was going back to the left. Now I can find out the x position of mega man based on those two bytes. Though it seems kind of weird to place those 2 bytes so apart in memory, but it is what it is! Thanks for the help though, Dark Byte!