I need a (relativly) cheap "old school" CPU with external memory for executing programs loaded of a SD card, with a little OS running at boot for the basic IO.
The PIC18F8 family can run in "Microprocessor mode", which turns the chip into a soaped up Z80 that have a 2 MB address space. App note for reference: http://ww1.microchip.com/downloads/en/AppNotes/00869b.pdf
I've read the datasheet and tried to search for a reference desgin that hooks up the PIC to external parallel SRAM, but I cant find any.
If any PIC wizards are out here, can you confirm that my interpretation of the Microprocessor mode indeed gives me a more general purpose CPU with a 2 MB address space ?
Bonus question, any advice on a parallel SRAM for the in the heading mentioned PIC ?
