I was wondering if anybody got a c166 to run the debugging at a baudrate higher than 57600baud? if the program becomes large it is odd to watch the loading process rising in 5% steps. i gave the 115200baud a try but it might come from the deviation error and thus didn't work:
f_cpu = 20MHz; S0BRS=0;
with S0BRL=4 i get 125000baud (which is 8%) with S0BRL=5 i get 104167baud (which is 9.5%)
is my calc correct? is there anything else i missed to set/check?
if there is a setting that makes me able to debug gt. 57600baud.
Of course there is such a setting --- on your board. But there's almost certainly none that works on both a standard PC serial port and your board.
depending on the chip your computer owns
There's no such dependency to speak of --- I said "standard PC" for a reason. PCs clock their UARTs at a frequency that allows 115200 baud, but not 125000.
i was wondering whose board offers the weired frequencies.
Those of all designers who cared enough about PC compatibility of their serial ports that they stopped to think about it a moment before picking a quartz frequency.