von neumann architecture fix

Everyone knows about the von neumann architecture and the bottle necks that come with it.  I have an idea though.

Why not have two separate sets of ram, one for memory and one for programs?  Both would be exactly the same, both able to read/write/store code like normal ram, but while one ram is executing it can use the other one for memory storage eliminating the bottle neck.  Also all programs would be backwards compatible because a program can still run on a single side of ram and leave the other alone.

Would this be an easy solution or am I missing something here.

>>9
No. >>8-chan is talking about the caches, which are organized like the Harvard arch for the simple reason that executable code and non-executable data are generally stored in completely different parts of the address space. If you did operate on code as if it were data, you could still push it back out to main memory and then execute a jump to wherever you put it. BAM! You have modified your code.