Thanks a lot Henrik.

It works now

To get a nice "visual" (= visible on scope) close to 50% duty-cycle, I set PDC0L to 100.

I now have to start to "play" with the formula(s) and registers to change values - I might come back for more questions

Code:
' Set up PWM1 (PORTB.1)
T0CON   = %00000000
T1CON   = %01001010
PTCON0  = %00000000 'Postscale 1:1, Fosc/4 Prescale 1:1, Free Running Mode
PTCON1  = %10000000 'Time base in ON, Time base counts up
PWMCON0 = %00010000 'PWM1 enabled
PDC0L   = 100        'Duty Cycle control for PWM0/1
PTMRL   = %00000000
PTMRH   = %00000000
PTPERL  = %00110011 ' = 51
PTPERH  = %00000000
Sorry to ask maybe a stupid question but what is the interrest of a PWM "resolution" parameter? I can understand resolution for an incoming analog signal, but PWM is only output as far as I know...

Another thing; look at the pulsed signal, especially at the high state where the signal is kind of rippled. What's wrong here?
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