AW: Digital poly scan keyboard

[Ullrich at kapsch.net]

	Hallo!

	>I need some help with a polyphonic keyboard scanner, It is gonna use the 8:1
	>mux idea but I don't know if It scans off resistors or diodes, and i don't
	>know how to address them using 6 bits, if anybody can be a help with this, it
	>will be greatly appreciated,

	If you want I could scan the schematics of my Crumar masterkeyboard.
	I also have the Intelhex-file for the 8751 controller that does the decoding.
	It outputs polyphonic midi-data on midi channel 1 so you could directly control a synth with it.

	The keyboard part is the same as in the Crumar BitOne keyboards as far as I know.

	Ciao
	Peter

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                   Ing. Peter Ullrich         mailto:ullrich at kapsch.net
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                   Hardware & Software Developer /  Electronic Musician
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