Blachet chip

[Fraser, Colin J]

> -----Original Message-----
> From: phases [mailto:phases at mindspring.com]
> Sent: 31 January 2000 00:10
> To: synth-diy at mailhost.bpa.nl
> Subject: Blachet chip
> 
> I was looking to try and send sync out from my 909. Anyone 
> ever done this?
> I don't want a seperate midi to sync converter, I want to put 
> it inside the
> 909 or do a mod.
> I was told that I could use the Blachet chip and fit it 
> insied of the unit.
> If you have any info on this or contact info, please let me know.

I modified my friend's 909 to output din sync instead of receiving it, using
my own sync chip.
If you can get someone to program a PIC for you, you can get source code for
my midi to sync 24 convertor from  http://www.octavo.demon.co.uk/colinf
If you can't program your own, I can sell you one.

I use a single 8 pin IC (PIC12c508), without the need for an external
crystal.
I can also easily alter the code for my chip to accept a direct input from
the 909 midi output line, leaving out the opto-isolator.
Total parts count in this case is 1 IC, 3 resistors and 1 capacitor.
 
While you're at it, you might like to improve you 909's midi output stages -
details are also on my site.

Colin f