I'm looking to use this on the ATTINY2313 to PWM all the outputs. I created a new "TinySoftPWM.c/h" library and changed the failing references in blind hope thus
TIFR = (1 << TOV0); // clear interrupt flag
TIMSK = (1 << OCIE0A); // enable timer0 output compare match interrupt
TCCR0B = (1 << CS01); // start timer (ck/8 prescalar)
TCCR0A = (1 << WGM01); // CTC mode
OCR0A = SOFTPWM_OCR;
And also changed ISR(TIMER2_COMPA_vect) to ISR(TIMER0_COMPA_vect).
The code now compiles, but behaves oddly once uploaded (TinyISP). I'm running using the internal 8MHz osc so would expect it to be a bit slower, but I seem to be getting some rather random blinking running the SoftPWM blink sketch.
No idea what to try next....