开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育

Re: Proper LSI values on Kas Board-Sharing project


 

Hello Mike,

Actually i've been reading about -6.5v/+8.5v (1/0) process almost everywhere in the manuals, and precisely this is what pushed me to really check the KAS LSI's, ?when i realized my TR1-TR8 didnt follow those values (I have more -4v/+6v).
So, i checked the?26600 and 26700, and there again i couldnt find -6.5v/+8.5v values everywhere, instead
i got a few confusing values here and there:

YM26600
- Note terminals (Pins 7-19)= +2.3v(Note on) / -3.8v(Note off)
- U1-U5 (Pins 20-24)= +2.5v(Note on) / +8.4v(Note off)
- N1-N4 and B1-B3: Inconstant results...Probably need to read more about LSI functions first to get the logic
?-All other values seem to be ok

YM26700
-CH1 (Pin 38)= 1v (stuck from lowest C to highest C)
-N1-N4 and B1-B3: Inconstant results...same as above
?-All other values seem to be ok

KAS Board?
TR1-TR8= -4.3v(Note on)?/ 5.5v(Note off)
TR9= -3.7v

At least, the top octave (i guess U5) is responding something ;)

Great if it inspires you something to start with! :-)

Thank for the help,

Luca




Join [email protected] to automatically receive all group messages.