AtomSID

[oss003]

Hi guys,

I have my AtomSID running and playing some BeebSID files

Have a look at:

http://www.youtube.com/watch?v=iKX0m24BEwk

Greetings
Kees

[Arcadian]

Want.

[Elminster]

Did this ever get offered for sale and/or build instructions get posted etc?

Something I can reference on the hardware list basically.

[oss003]

Well I did build the first AtomSID but this one never made it into production.
IIRC Phill has developed a new AtomSID board ......

Greetings
Kees

[Elminster]

Too many SID boards Okay I dont think I had that one either. I saw mention of one by you and Roland.

[oss003]

The problem is that the SID chip needs +12V or +9V and the Atom only has +5V.
This was the test board with a stepup PCB.

Greetings
Kees

[Prime]

Yeah the board I designed is a bit smaller (it's double sided which helps) but also uses a step up module to 12V, and then a 9V reg if needed, with a jumper to select 12V/9V to power the SID from, I'll post a picture when I get back from my holiday

Cheers.

Phill.

[Elminster]

That would be great. If everyone posts various AtomSIDs here I can just reference this link.

[roland]

Too many SID boards Okay I dont think I had that one either. I saw mention of one by you and Roland.

I don't have a sid board but an emulared sid in my Godil. I donated my real sid to Kees after he send his sid to silicon heaven

[sirmorris]

Well I did build the first AtomSID

Maybe the first PCB

Sorry Kees, you are a bona-fide Atomic Legend but I can't let you get away with that

Anyone remember the famous Lass incident with the SID killer monitor audio input? Lucky there was a spare SID in that c64 that was screwed to the wall. I don't know how many health & safety infractions I incurred putting a plastic bag over the smoke detector in my hotel room so I could solder this bad boy up

Here is a vid the board above in action

[Multiwizard]

Well I did build the first AtomSID

Maybe the first PCB
IMG_3756.jpgIMG_3758.jpg

Anyone remember the famous Lass incident with the SID killer monitor audio input? Lucky there was a spare SID in that c64 that was screwed to the wall. I don't know how many health & safety infractions I incurred putting a plastic bag over the smoke detector in my hotel room so I could solder this bad boy up

Yep, I know that story...


Greetings, Wim...

[oss003]

Anyone remember the famous Lass incident with the SID killer monitor audio input? Lucky there was a spare SID in that c64 that was screwed to the wall. I don't know how many health & safety infractions I incurred putting a plastic bag over the smoke detector in my hotel room so I could solder this bad boy up

Aahh ..... you're right ......

Sorry Charlie, I did forget that you started the SID adventure in Manchester where the legendary SID sound for the first time came out of an Atom and filled the room ......

Yes, blowing a SID, ripping a C64 of the wall and illegal smoking in your room ....... those were the days ........
Is it still working?

Greetings
Kees

[Elminster]

Thanks. Keep them coming. If anyone has any links to layouts or build instructions just put them here. Hopefully update the hardware list tonight, got distracted playing with pitube again last night.

Edit: AtomSIDs in hardware list now point here.

[oss003]

There is an old Dutch article from 1990 with schematic about a SP0256 speech syntesizer and a 6581 SID chip board.
I don't know if it was ever build but maybe one of the authors can remember ............. Roland???

http://www.acornatom.nl/atom_nieuws/199 ... 902026.htm
http://www.acornatom.nl/atom_nieuws/199 ... 902027.htm
http://www.acornatom.nl/atom_nieuws/199 ... 902028.htm
http://www.acornatom.nl/atom_nieuws/199 ... 902029.htm

Greetings
Kees

[sirmorris]

Yes, blowing a SID, ripping a C64 of the wall and illegal smoking in your room ....... those were the days ........
Is it still working?

As if I'd ever do anything naughty

It is indeed still working. Just about.

[roland]

There is an old Dutch article from 1990 with schematic about a SP0256 speech syntesizer and a 6581 SID chip board.
I don't know if it was ever build but maybe one of the authors can remember ............. Roland???

I have never seen this board or it's layout.

I did some research on Linked In to the other author of this article and I found a person whose profile matches with that what I expect from Leo. So I asked that person if he is the Leo I am looking for. If he is, he might have some more information about this board. To be continued ....

[-B-]

I would like to add SID sound to my Atom.
Has anyone had PCB's made that can sell me one or supply the gerbers?
I will probably use a SID clone on the board that can be either 6581 or 8580, is there a preference for the 9v over the 12v chip from the point of view of building the board?

Neil.

PS: @oss003 I will be asking you about this at the 2019 TechSat

[oss003]

I would like to add SID sound to my Atom.
Has anyone had PCB's made that can sell me one or supply the gerbers?
I will probably use a SID clone on the board that can be either 6581 or 8580, is there a preference for the 9v over the 12v chip from the point of view of building the board?

Neil.

PS: @oss003 I will be asking you about this at the 2019 TechSat

Hi Neil,

I made a DIY board just with a mask.

download/file.php?id=30444&mode=view

Phill did make another design in Eagle and maybe he has one spare or the gerber files.

https://www.facebook.com/photo.php?fbid ... =3&theater

Greetings
Kees

[-B-]

I have been looking at my options for a SID chip and decided not to remove one from a working machine and go for a SwinSID...
- It can emulate either 6581 or 8580, selectable with a jumper.
- It runs off 5v so does not need a voltage step up circuit/board.
- People say it does not sound as good as an original chip.
- It is relatively cheap: 10 GBP for the through hole, large PCB version, and 15GBP for the smaller SMD version.

I also looked at the ARMSID...
- It autodetects which chip it should emulate by looking at the voltage on Pin 28 (12v or 9v) so it will still need a voltage step up circuit/board.
- It costs a lot!

I will let you know what it is like in due course.

Neil.

[Elminster]

They work fine in the normal BeebSID as that is what I have.

viewtopic.php?f=3&t=14803&hilit=swinsid#p207387

Did a rubbish video here https://youtu.be/7f8VqDFEL0E

I have another BeebSID somewhere with a real SID in, but never compared them to tell the difference.

Regards,
Duncan

[anightin]

I'd like to make up an ATOM SID if there are any boards floating about.

@Neil did you manage to source a board?


Andy

[-B-]

@Neil did you manage to source a board?

I received one of Kees’ PCBs while at the Dutch Atomic Techsat a few weeks ago.
I’ve almost finished it but I’m on holiday at the moment so everything is on hold and no retro computing of any kind is getting done.

Neil

[bprosman]

What would be the smallest FPGA that would just hold a "SID" ? Well maybe with some additional address decoding.

[Elminster]

What would be the smallest FPGA that would just hold a "SID" ? Well maybe with some additional address decoding.

The SID replacements the SwinSID use microprocessors rather than fpga, I wonder if you could some how use there work to help translate to fpga land.

[bprosman]

I personally can't.. maybe Dave Hoglet could (give his view).

[hoglet]

I personally can't.. maybe Dave Hoglet could (give his view).

The answer depends very much on the FPGA family.

The SID contains a digital filter which uses multipliers. So if the FPGA arctecture provides hardware multipliers, then it will be a much more efficient mapping. As an example, consider the BlackIce port of AtomFpga (the Ice40 FPGAs don't have hardware multipliers):

Ice40Atom built without the SID:

Code: Select all

After packing:
LCs          2708 / 7680
  DFF        823
  CARRY      160
  CARRY, DFF 29
  DFF PASS   552
  CARRY PASS 50
BRAMs        14 / 32

Ice40Atom built with the SID:

Code: Select all

LCs          6696 / 7680
  DFF        1605
  CARRY      610
  CARRY, DFF 196
  DFF PASS   921
  CARRY PASS 153
BRAMs        22 / 32

So the SID is taking up ~4000 logic cells and 4KB of Block RAM. So actually quite big!

Dave

[bprosman]

Also curious in (if any) quality differences between a SwinSID and a FPGA-SID

[-B-]

I finally got around to finishing the AtomSID board that Kees gave me at the Dutch Atomic Techsat in June.

I have modified it slightly. I am usung a SwinSID so it runs off 5v making the step-up voltage area of the board redundant, so I cut it off, removed some tracks, made some links, moved some components and added a 3.5mm jack socket.

Video of it working via the little speakers in my monitor, here... https://youtu.be/FXilYzUC71U

Neil

[anightin]

Excellent stuff Neil

Building one of these is still on my TODO list.


Thanks for sharing

[oss003]

Nice job Neil .......

This Rob Hubbard SID file is the ultimate SID tune ...... download/file.php?id=8067

Greetings
Kees