Hi there

I am developing a Ram loader board, which could basically load a program to RAM from a PC.

I am using 89C51 (Atmel). My software is placed in the Flash Rom. It supposed to work with internal memory when EA pin is set to high and
the software would have to run from extenal memory when EA is set to Ground.

My system, however, always starts from internal memory in spite of EA pin voltage.

Did I do anything wrong here ?

Thanks for your help.

Quang