No, I try to increase CPU cycles but the problem happens again. The speed response in serial protocol is too slow. With a message received long 50 bytes the protocol respose is sent after 1 second about. The same protocol under DOS system replays in 10 msec about. As attach the dos serial program …

with rxdaly:10 the program runs better, but overrun error simtimes happens I think that serial receive char is slow, because if message received is short (10 char) overrun error doesn't happen, but if message is longer (50 char) overrun error happens I have increase CPU cycles until 200000, but …

hi, I'm using dosbox to run dos serial communication program. Program works wrong. The program uses COM1 9600bps, when receives a new message the DOSbox status windows displays Serial1: Errors occured: Framing 0, Parity 0, Overrun 6 , Break 0 so I try to set FIFO Enable in 3FA register but the …