bosone Posted October 2, 2003 Report Posted October 2, 2003 i just switched my "old" 6581 SID with a 8580, hoping to have a better filter.so i mounted two 6.8 nf caps as suggested by the schematics, but the filter works like crap!if i use only one osc, and set that osc to a low pass (in jsynth) if the cutoff is=0 everything is ok. but when i move the cutoff to 2 or 3 it begins to make strange noise, and it continues in the same way even if the cutoff reach 127. it's not working like a "normal" filter... it only produce noise!!!should i change the caps?or is the fact that i'm using PIC 16F877 instead that MIOS??
pay_c Posted October 2, 2003 Report Posted October 2, 2003 I know this could be stupid to say, but I´ll do it: You did change the voltage regulator, did you? (6581: 12V, 8580: 9V)
Stigmata Posted October 2, 2003 Report Posted October 2, 2003 Did you burn the PIC16f877 with the firmware for the 8580??Christoffer
bosone Posted October 3, 2003 Author Report Posted October 3, 2003 Did you burn the PIC16f877 with the firmware for the 8580??Christofferno!!i didn't remember there were two different versions!thanks!
Stigmata Posted October 4, 2003 Report Posted October 4, 2003 Hmm....Nothing here is stupid to ask.. ;DChristoffer
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now