Agemixer (05:03:00)
the reach signal is given back to c64 userport line which tells the CIA counter to just stop counting (1MHz resolution)

Agemixer (05:01:40)
RC circuit reference signal (resetable), and line input just to opamp input.. gives out a logarithmic curve delay before the result gives "reached"

Agemixer (04:57:55)
the final solution:

Agemixer (04:57:24)
i was thinking of opamp giving a difference between input and ref signals, but it still gives analog result...

Agemixer (04:55:44)
that would make wense and one RC circuit would do that thing pretty much, rising from 0v to 5v

Agemixer (04:54:14)
plus what if we leave the comparison for opamp or two for one (mono) signal instead of anything digital?

Agemixer (04:53:20)
but what if... 6526 timer? how? hmmz

Agemixer (04:52:41)
what if the input signal is approximated with multi-opamp chips? No.. too rough, gains only few bits and all that calibration and the component values.. still complex

Agemixer (04:50:36)
no.. still requires extra reads and writes per sample... then about a microcontroller... no way, too much of work perhaps, programming and all that

Agemixer (04:49:16)
i was thinking if a count-up/down chip would do as a faster counter versus c64's 6526 or CPU..

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