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MFP MC68901 delay mode desired frequency table [Hz]
Handout/reference for Atari ST MFP MC68901 timers programming (in pdf format). This goes for timers A,B,C and D in delay mode.
Feeding data register with given timer data value and setting proper timer division (4/10/16/50/64/100/200) will result in given frequency of interrupts (in Hz).
Pawel Goralski