Discussion about the Korg PolySix synthesizer

I gather that by "WE" you mean WRITE ENABLE, but what is "CS line" ? 


--- In PolySix@yahoogroups.com, "Roman" <modular@...> wrote:


you may be right. Although it's a matter of one bit corrupted to
dramatiacally change the sound - imagine altered MSB of filter sutoff.
If you try to call pathces from 1-8 and the sound is the same, that 
could mean that your RAM is not responding, or CS line to it is 
broken. If the patches differ, but everytime you recall them they are 
more or less not changed, that means RAM is OK, but something is 
wrong with writing it. Maybe WE trace broken.
You could also try to measure power supply current of the ram. This 
4V you mention is worrying me. If it's considerably high (like a few 
mA) it may suggest that RAM is really broken, possibly by 
electrostatic discharge. Another way of testing is is to measure RAM 
power supply voltage when the P6 is powered off. It should be only 
0.2-0.3V lower than battery voltage. If it's 0.7V or more, that's a 
sign that something is wrong with the RAM.

> 
> Roman