are you saying the actual uart RX clock is 125khz ?
8250 baud scaler (1 of 3 divisors)
1mgh divided by 64 is 15625, so that would correlate with your old measurements.
but 125khz div by 16 is 7812.5
and 125khz div by 64 is 1953.125
1mgh divided by 64 is 15625, so that would correlate with your old measurements.
I will try them all.
i will scope all my uP pins and try to find a symmetrical clock and then measure it.
i suspect the ECU's91 + use the same params ,for comms up to 95 (usa) , just a gut feeling by looking at what plug in packs are used on a GM tech1 , and a tracker.
cheers,and thanks for looking !!!
late edit, I found my clock to be 12mhz out of crystal into CPU.
Last edited by jtgh : 07-02-2008 at 01:30 AM.
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