Interrupt not working(tx in softuart)(reception is inbuilt uart in the interrupt mode)

#include<softuart.h> #include<stdio.h> #include<reg51.h> void uart_init(); sbit sw=P1^7; unsigned char rx(); code unsigned char rd[] = "AT+CMGR=1"; code unsigned char ne[] = "AT+CNMI=2,2,0,0,0"; unsigned...
Interrupt not working(tx in softuart)(reception is inbuilt uart in the interrupt mode)

#include<softuart.h> #include<stdio.h> #include<reg51.h> void uart_init(); sbit sw=P1^7; unsigned char rx(); code unsigned char rd[] = "AT+CMGR=1"; code unsigned char ne[] = "AT+CNMI=2,2,0,0,0"; unsigned...
Replacement for the 80c552

Hi there! An old project of mine is runnining on a 80C552/30MHz (KBA, is the psot fix, I think). This processor is obsolete, but I need the speed (I think). The software was written by somebody else...
Replacement for the 80c552

Hi there! An old project of mine is runnining on a 80C552/30MHz (KBA, is the psot fix, I think). This processor is obsolete, but I need the speed (I think). The software was written by somebody else...
compiling EPROM firmware for NXP 80C552 Micro

Hello, I have a board with NXP80C552 Micro init and the firmware gets programmed onto a EPROM chip. I need to modify the firmware and recompile and program it back to the EPROM. I am modifying...