Hello,

We are using Keil PK51-V7, and using code banking feature, > 64K code size.

We wanted to write a small program, which is self Sufficient for micro controller and hardware start-up after write Jump command to external EP-Rom.

Purposes; small code for micro controller security; rest all code in external ep-rom, so when ever we required to upgrade; we just change the ep-rom only.

We are using 89C51; so we got external ROM 60K.

thanks and regards

Sandeep Gupta