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Amiga computer related discussion => Amiga Marketplace => Topic started by: redrumloa on November 18, 2003, 01:47:58 PM

Title: Looking to purchase bulk SID chips!
Post by: redrumloa on November 18, 2003, 01:47:58 PM
I am looking to purchase SID chips in any quantity, the more the better.
Title: Re: Looking to purchase bulk SID chips!
Post by: xeron on November 18, 2003, 01:50:05 PM
I had a spare one, but due to an accident, all the pins got squashed and some of them broke :-(

Doesn't really help you, i know. Are you after them for catweasels?
Title: Re: Looking to purchase bulk SID chips!
Post by: redrumloa on November 18, 2003, 01:55:10 PM
Shame, don't really want to be repairing pins:-( I am after them for multiple reasons, Catweasels being one of them. SID chips are the most sought after of the old C= chips. As a matter of fact I just sold a couple off and now I realise I need 2 for myself :-/
Title: Re: Looking to purchase bulk SID chips!
Post by: Jope on November 18, 2003, 02:14:02 PM
Good luck!

They're getting scarce. :-(
Title: Re: Looking to purchase bulk SID chips!
Post by: takemehomegrandma on November 18, 2003, 03:18:48 PM
Try Individual Computers. AFAIR they once bought a huge stock of those ...
Title: Re: Looking to purchase bulk SID chips!
Post by: bloodline on November 18, 2003, 03:28:51 PM
Could one make an FPGA replacement?
Title: Re: Looking to purchase bulk SID chips!
Post by: downix on November 18, 2003, 03:32:13 PM
@bloodline

Fairly easily.  Could even do it in CPLD.
Title: Re: Looking to purchase bulk SID chips!
Post by: downix on November 18, 2003, 03:39:07 PM
click on jester. (http://www.fpga.nl/)
Title: Re: Looking to purchase bulk SID chips!
Post by: bloodline on November 18, 2003, 03:51:08 PM
Quote

downix wrote:
click on jester. (http://www.fpga.nl/)


:-D
Title: Re: Looking to purchase bulk SID chips!
Post by: downix on November 18, 2003, 03:59:54 PM
@bloodline

From what I can tell, the only issue with cloning a SID is the analog filter, namely SID's filter is a hack put on the last moment.

If you can opt for an external filter, wouldn't take long to clone SID at all.  
Title: Re: Looking to purchase bulk SID chips!
Post by: bloodline on November 18, 2003, 05:26:22 PM
So what is the SID anyway? just a couple (3?) ocilators and a filter? I could knock one up on a breadboard in an evening!!! :-)
Title: Re: Looking to purchase bulk SID chips!
Post by: Karlos on November 18, 2003, 05:28:22 PM
mmmmmm bread...

-edit-

Sorry, that's soo OT, but I am really hungry!
Title: Re: Looking to purchase bulk SID chips!
Post by: downix on November 18, 2003, 05:30:35 PM
@bloodline

It is:

3 tone occilators
3 Envelope Generators
3 Amplitude Modulators
4 mixers
1 Filter
A volume control
and the analog converter.

yes, a simple breadboard could do it.
Title: Re: Looking to purchase bulk SID chips!
Post by: bloodline on November 18, 2003, 05:33:09 PM
Quote

downix wrote:
@bloodline

It is:

3 tone occilators
3 Envelope Generators
3 Amplitude Modulators
4 mixers
1 Filter
A volume control
and the analog converter.

yes, a simple breadboard could do it.


Did it have preset wave forms?
Title: Re: Looking to purchase bulk SID chips!
Post by: Karlos on November 18, 2003, 05:35:42 PM
It would have been pretty cool if some of that had found its way into paula, eh?

Can you imagine the fun pumping samples through  a resonant filter? Man, that would have been awesome for tracker types.

Hmm, anybody remember musicline?
Title: Re: Looking to purchase bulk SID chips!
Post by: downix on November 18, 2003, 05:41:37 PM
@bloodline

Yes:
triangle
Pulse
sawtooth
ring
and noise

A good page for detail on the SID can be found here (http://stud4.tuwien.ac.at/~e9426444/sidtech.html)