Cheat Engine

[OldCheatEngineUser]

since all 32-bit operating systems allow maximum physical memory 4GB, is there anyway around to use more than this amount using 64-bit processor?

i know the fact for the limitation is because the addressing space is limited in 32-bit hardware and software.

[atom0s]

For Windows 8.1 there is a patch you can get to activate a hidden feature that Microsoft left disabled by default called 'Physical Address Extension Mode' which can bypass the 4GB limit. It switches the OS to use a 36bit addressing setup rather than 32bit which extends the system to be able to use a maximum of 64gigs.

You can read more about PAE here:
http://en.wikipedia.org/wiki/Physical_Address_Extension

[OldCheatEngineUser]

so its only for win8.1?
and there is nothing for win7 x86?

any other solutions?

[Dark Byte]

there are some ramdisks that make use of that memory in older windows versions. (that have implemented the no-execute paging support as that requires PAE)

i guess you could write a driver just for your app to use it as well. let the driver 'allocate' memory in the 4gb+ region and then adjust the pagetable entries of your process to point to there

keep in mind applications still only have a 2GB(or 3GB depending on a switch) of virtual memory

[OldCheatEngineUser]

i read about PAE in wiki and intel ia-32 sdm.

but didnt get much really, i think i need to understand more topics in order to fully understand this.

[Dark Byte]

pae switches the paging system from 32 bit pointers to 64 bit pointers (and changes the number if pagelevels from 2 to 3 by adding the pagedirptr table which points to pagedirs)

[OldCheatEngineUser]

hmm seems no drivers really needed, read this.

[Dark Byte]

only if your os version has that capability. i remember that Microsoft didn't allow 4G+ to be used by customer versions, only enterprise ones