RC MU SC MD PWM SO what's the meaning i don't find MU on the sid module pcb like

[boops]

hi,i can't find the meaning of SO SC MU (PWM  Cool  i known this like clock,pulse width modulation) RC ?

on shematic i read MU on the core pcb too,and i read SC on the sid module,in fact,i don't find MU on the sid module pcb like the shematic???thanks

[stryd_one]

I'm guessing:

Serial Output

Serial Clock

Multiplexer

Edit: Tags need to be separate words, in lower case ;)

[boops]

thanks but i ask the question in another manner /where the MD (which mean?)pin of the core ,on J2 ,on the sid module?i only find SC(which mean?)at the same place on the smash tv sid module... ???

[stryd_one]

I wasn't sure, so i searched for the pin names you mentioned, and I found this:

http://www.midibox.org/forum/index.php/topic,10898.msg84291.html#msg84291

[boops]

thanks again Stryd  answer here: 8) i have to learn to search in this forum before learn electronic!!!! ;) cause i put too much complex tags

Connecting SID to CORE