This page (revision-8) was last changed on 03-Feb-2023 15:21 by Florian Dingler 

This page was created on 04-Aug-2010 20:27 by Florian Dingler

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8 03-Feb-2023 15:21 1 KB Florian Dingler to previous
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At line 39 changed one line
Start the POKEY timers (the AUDF registers above). You POKE any non-zero value here to load and start the timers; the value isn't itself used in the calculations. This resets all of the audio frequency dividers to their AUDF values. If enabled by IRQEN below, these AUDF registers generate timer interrupts when they count down from the number you POKEd there to zero. The vectors for the [AUDF1], [AUDF2] and [AUDF4] timer interrupts are located between 528 and 533 ($210 and $215). POKEY timer four interrupt is only enabled in the new "B" OS ROMs.
Start the POKEY timers (the AUDF registers above). You POKE any non-zero value here to load and start the timers; the value isn't itself used in the calculations. This resets all of the audio frequency dividers to their AUDF values. If enabled by [IRQEN] below, these AUDF registers generate timer interrupts when they count down from the number you POKEd there to zero. The vectors for the [AUDF1], [AUDF2] and [AUDF4] timer interrupts are located between 528 and 533 ($210 and $215) [VTIMR1], [VTIMR2], [VTIMR4]. POKEY timer four interrupt is only enabled in the new "B" OS ROMs.