a) Use the internal memory and the memory over the internal in external memory.
Change nothing, when the 8052 overflows the internal memory access to external memory.
Connect psend to the oe of the eprom and the rest of chip select as selected.

b) Use only the external memory. Disable the internal changing the value of EA. Conect the eprom as described before.


In both cases you loose the isp utilities for the external memory. So you need a programmer or a routines to do ISP in external eeprom.

32k it is a long long assembler code!