Hi,
I am using the AT89C5131A MCU. I have an issue related to the HEX code generated by keil. Actually I was testing the output level(1 or 0) from each 4 ports using a simple HEX code.
IF I write an assembly code and generate its equivalent HEX code ( purpose - as stated above) and burn it to MCU then it works as expected. But if I write same logic in keil(C program) then use the HEX code generated by it and burn it to MCU then is also works as expected for PORT 1 and PORT 3 only. There are some fluctuations in PORT 0 and PORT 2 if I use the HEX code generated by Keil(c program) but with the Assembly's HEX code, all ports works fine. I have checked all settings in Keil, all are correct.
Could anyone please tell me the solution for same.
Thanks in advance! Mohit