error 65 with 89C51ED2

Hello, I wrote a program for a 89C51ED2 (using C instructions, not assembler, it's easier for me...); the compilator is OK, but when I use the simulator, I get the error 65 with the return of a sub...
Atmel FLIP for 89c51ED2

I tried using Atmel FLIP to program a fresh 89c51ED2. I have MAX232 and FLIP communicates and establishes the connection with the uC (as it shows all the parameters, bootloader version etc and all the...
Atmel FLIP for 89c51ED2

I tried using Atmel FLIP to program a fresh 89c51ED2. I have MAX232 and FLIP communicates and establishes the connection with the uC (as it shows all the parameters, bootloader version etc and all the...
error 65 with 89C51ED2

Hello, I wrote a program for a 89C51ED2 (using C instructions, not assembler, it's easier for me...); the compilator is OK, but when I use the simulator, I get the error 65 with the return of a sub...
AT 89c51ED2 psen pin is always low

Well Iam successfully able to load my program to AT89C51 IC howevr iam not able to retrive the data. When I checked the PSEN pin the its low even after programming the flash insideis not transmittinmg...