--- In ct64@yahoogroups.com, "kiotozane" <kiotozane@y...> wrote:

> -why is the output from my c64 "out of tune" from other gear? the
> standard A from the c64 is not 440 Hz. i have to resample/pitchshift
> the samples, and loose some quality in the process. it is also
> impossible to "jam" on the 64 with my Logic mix. is this possible to
> change somewhere? I have a european c64, the brown one.

The intonation in the c64 is proportional to its raster update, see
the appropriate Appendix in your programmer's guide.

In order to make it in tune, you'd either have to hack the software to
base its note table on PAL's refresh rate instead of NTSC's, or hope a
future version will have an easier way to adjust intonation in real time.

Sorry for later response, hope that was helpful.

Best wishes

Christopher Hunter