PROPHET64 & MSSIAH Userforum

I like the 6581 precisely because it doesn't sound like a generic synth.
Ok, it doesn't sound a whole lot like a 303, but how often do we hear that sound today? Far too much if you ask me. I use a SID because it sounds like a SID, not because it emulates something else. I do get what you mean about the filters working better and everything, but I don't actually want that sound, I want something unique.
What i'd really like is the ability to mix the square and saw waveforms, with PW mod controlled by the filter envelope, I think that'd be a unique sound (I can get it with the MONO but that's not the same somehow).
I'd also like to use one of the osc's for a sub bass generator using the TRI waveform. Now that would be fat!

I also want the moon on a stick....

Exactly.
I'm going to build a SID2SID with an 8580 and a 6581 for two reasons:

1: People say it can't be done.
2:  It will sound brilliant!

YES it would be great to be able to just switch from 6 to 8 in the same computer! brillant!

Still the bad thing is that you will need to build it for breadbox OR C64c, because they still have diffeerent voltages!

For the sequencer, it is nice to have the 6581, but for the filters on the "synth" parts of the cartridge, I prefer the 8580. With cynthcart though, I really like the 6581 (not the R4) version. It just sounds gritty and mean. Awesome.

Maybe your R4 has a fault.  The R4 and R4 ar are just smaller versions of the same 6581, same sound.

But yes, cynthcart is a 6581 program for sure!!  the grit on the filtered sine wave..OOH FU*K!

it would be posible to modify your c64 to have BOTH types of sid, or 2 sid2sid boards.. but the risk of damage and difficulty are major negatives.

2 commodores is easier, and ultimately, about the same price.

why not get another commodore?  i don't know where you live, but they are at garage sales still in toronto.. once in a while.. for 20$ or so.  YOu see them in newspaper classifieds too.  ANd of course, ebay.. where i got 10 commodores..

then you can have all your dreams come true.

I guess I could run 2 commodores, but that means two PSU's and two monitors. I can't be bothered with that.
I don't suppose anyone's ever noticed but the power supplies for the breadbin and the C64C are the same, they both present 9VAC & 5V. It is therefore conceivably possible that by interrupting the power supply to the second SID on a SID2SID, you could add a regulator to supply 9V DC to run an 8580. As far as i'm aware, no changes were made to the firmware controlling the 8580 and the filter caps would be on the SID2SID so it's pretty much a plug an play mod.
Now, if anyone has any broken 8580's that could be used to test this theory, i'd happily accept donations

I occasionally pick up free Commodores or just for a couple of euros, way less than $20 (even Canadian ones ).
At this very moment even, there's this guy on a national auction site giving away a free C128!
He's got mail

The only thing I'm still looking for is a brown 1541 drive, so I can mod it to a parallel drive.
The 3 1541Cs I have, have this awkward pin1 thing that is connected to the track-hole
Can't mod those... but I digress...

that's the kind of sounds I have in my mind. Harsh....

linde wrote:

Belching low tuned saw bass with low resonance and short filter decay...

....fully MIDI controlled....


A dream?

My sidstation and my c128 both have 6581r4. Its kind of the best of both worlds. That being said, I want a 8580! If I get a c64c, they all have the 8580 or no?

you can use both sids installed! im using a 8580+6581 on one sid2sid in one c64. this mod in somewhere here in this forum....

Last edited by FriendlyFire (2008-08-09 00:38:51)