parallel eeproms and 8051

From: funkymunky (prehistorictoad2k_at_yahoo.com)
Date: 12/29/04 

Date: 29 Dec 2004 07:54:32 -0800

Hi..

Im new to embedded systems, iv started with the 89c51 uC. Ive never
used a parallel eeprom with the 89c51, thought iv used a serial one
with the i2c protocol (and had a tough time in getting the thing to
work, using sdcc :-( ).

My question is..can only a parallel eeprom be used to extend the RAM??
seems logical, or else how would the uC generate the address on its
own??

Also, can some part of the code be in the on-chip flash and the
remaining in an external serial eeprom?? again, how then would the uC
know the address to find the remaining lines of code?

Finally, could u point me to some good places where i can find info on
interfacing the 8051 types to a serial eeprom. How about bus arch too..

Im googling for this info too, in case u plan to flame me for not doing
that :-)

Thanx in anticipation

Mayank