Dear Frank,

The 89c52 has 08k of code memory. You can leave start of the code at 30h.

EA is external access. Connect it to Vcc if you have to execute the code from internal flash.

ALE is left no connect for internal execution
PSEN is also left no connect

For detail you can see ATMEL's datasheet of 89c52 from ATMEL.com

regards

Babar/