Azryl wrote:
Ok... I have heard but not personally confirmed this.. but the A590 can address 8megabytes of fastram with no modification IF you replace all the 256x4 ram chips with 1024x4 chips
Apparently this gives 4 times more memory with no modifications to the underlying ram logic.
The 1024x4 are extremely hard to get in the same DIP package as the 256's.
Hope someone else can add to this discussion
Az
Nah, I do not think that is the case, if you could find 1024x4 that had the same pinout as 256x4, the Memory controller logic would still only map out 1mbit, or 256x4 of each chip any way.
256x4 basically means 4 arrays of 256kbit, 1024x4 means 4 arrays of 1024kbit.. but the memory controller would still only map out 256x4 on each chip (Given the physical wiring of the A590 to the Ram).
But i think the biggest hurdle will be that 1024x4 will have different pins than 256x4 (I could be wrong).
