PBP External Memory Bus Support

[Darrel Taylor]

Well, Yes and No.

PBP can not access anything on the external bus directly. The compiler is limited to the first 64K of memory.
Which means that it can't even use the upper 64k of the 128k already on your 18F8722.

>> My question is, will PBP address greater amounts of RAM then what is included on the chip

The external memory can't be mapped to RAM space. It only extends "Program Space". But if the external memory is Static RAM, it can be read from and written to, by using the TBLRD and TBLWT instructions, the same as if you were reading/writing to Flash.

With a few ingenious ASM macros, you could easily create a program that uses that space for storage, but you can't do it directly with PBP.
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[Luciano]

Hi,

FRAM?

EEPROM and Flash devices have a limited write
endurance of typically 100,000 to 1,000,000 writes
compared to 1,000,000,000,000 or more for FRAM.

What is FRAM?
http://www.ramtron.com/doc/AboutFRAM/Default.asp

Serial Memory Products:
http://www.ramtron.com/doc/Products/..._list.asp?ID=5

Distributor:
http://www.mouser.com

Best regards,

Luciano