Why can't we dedicate more storage memory to program memory?

[sandiegodude]

I have a ton of on board storage memory on my ppc and only about 23MB of program memory. if we really have all that internal memroy on board, why can't we allocate more storage memory to the RAM?

Am I missing something here or is there a virtual partition on the chip that separates the two? If there are two separate chips, one for ram and one for rom, then of course we are stuck with what we get- but on the otherhand, if they're both located in the same chip then i think there's a chance for partition manipulation.

i think i'm rambling.