Search the web
Sign In
New User? Sign Up
cone_cores · C-One cores
? Already a member? Sign in to Yahoo!

Yahoo! Groups Tips

Did you know...
Show off your group to the world. Share a photo of your group with us.

Best of Y! Groups

   Check them out and nominate your group.
Having problems with message search? Fill out this form to ensure your group is one of the first to be migrated to the new message search system.

Messages

  Messages Help
Advanced
Re: SID   Message List  
Reply | Forward Message #284 of 660 |
Re: SID

> make much sense to me. There is a possibility for sound by just
> mounting a 6581 chip.


Of course, but the 6581 is not ready available. I see some of them on
e-bay, but I read some are defected or fake..

As I see there is a SID clone (FPGA) pin-2-pin compatible, (SwinSID).
I wonder why there is no SID clones available as the patent of SID
expired 4 years ago... (and there are a lot of devices like Catweasel
that they use a SID).

Maybe is too costly to produce a such. In fact I think its possible
(for someone that knows about this) to produce a board (that
resembles the SID) that connects to the SID socket, am I right?

rgrds

chris

--

www.csynt.net / www.bRONXwhq.org



Sun Jun 22, 2008 10:45 am

csynt
Offline Offline
Send Email Send Email

Forward
Message #284 of 660 |
Expand Messages Author Sort by Date

Hi, Is there any possibility to have SID emulation on the c64 core? Or there is lack of data space? Rgds chris -- www.csynt.net / www.bRONXwhq.org...
Chris [xc8/Bronx]
csynt
Offline Send Email
Jun 21, 2008
6:15 am

Would it even be possible to replicate the white noise generator with just logic? That's part of what makes the SID special. From: Chris [xc8/Bronx] Sent:...
Payton Byrd
KingDurin
Offline Send Email
Jun 21, 2008
6:26 am

I'm not familiar with the internals of how it was originally done in the SID, but the answer to that is a solid yes. Pseudo-random noise generators based on...
Jessica Mayo
jmlists@...
Send Email
Jun 21, 2008
9:47 am

Hi Chris, Actually it is a lack of 'logic-space'. I think the last core is at 97% usage of logic gates. There is still some fpga-memory free, but that doesn't...
Peter
pwsoft2005
Offline Send Email
Jun 21, 2008
10:02 am

... snip. So to fee up space, can we get rid of the 6510 in the fpga, and use the 6502 in the '816? and just put h/w inside the fpga that is needed to keep the...
Daniel
barana24
Offline Send Email
Jun 22, 2008
9:08 am

Hi, Yes, using the 65816 will free up about 20% of the 1k100. However I'm not going in that direction as it loses compatibility with the original c64. I do all...
Peter
pwsoft2005
Offline Send Email
Jun 22, 2008
9:20 am

... Of course, but the 6581 is not ready available. I see some of them on e-bay, but I read some are defected or fake.. As I see there is a SID clone (FPGA)...
Chris [xc8/Bronx]
csynt
Offline Send Email
Jun 22, 2008
10:45 am
Advanced

Copyright © 2009 Yahoo! Inc. All rights reserved.
Privacy Policy - Terms of Service - Guidelines - Help