Forcing Jpcsp to use more RAM?

[BlackDaemon]

Yes, if you do following steps:

#1 - for 32-bit OS only:
------------------------------------------------------------
for Windows 2k/XP -> add attributes "/3GB /Userva=3072" in boot.ini, like this:

[Boot Loader]
Timeout=30
Default=multi(0)disk(0)rdisk(0)partition(2)\WINNT
[Operating Systems]
multi(0)disk(0)rdisk(0)partition(2)\WINNT="Microsoft Windows Server 2003" /fastdetect /3GB /Userva=3072

for Windows Vista/7 -> run command line from administrator and type there

BCDEDIT /Set IncreaseUserVa 3072

wait until receive message with operation completed and reboot.
------------------------------------------------------------

#2 - adding LARGE_ADDRESS_AWARE flag
------------------------------------------------------------
Get 4GB Patch tool and patch java.exe
------------------------------------------------------------

After those steps 32-bit applications with LARGE_ADDRESS_AWARE flag could use up to 3Gb on 32-bit OS (and up to 4Gb on 64-bit OS).