FPGA Tuning C64 SID Jeri Ellsworth

[tribalmasters]

Too much stink and testosterone in the comments hehe !! The JTAG bit was very useful , always wondered how FPGAs are programmed.

[mcmackerel]

Sorry if this sounds sexist or not focusing on the point of the video, but that's insanely attractive :3

[acriked]

I guess this is a good way to hack sounds that are played quickly.

But controlling the chip itself is very simple.

[MonkeyFCoconut]

At 3:40 did you actually press the button and detune the right channel? It didn't look or sound like you did. Very nice work btw explaining some of the basics of the FPGA tool chain.

[anilksolanki]

Hi, I am new to this channel. Can someone tell me what the "Fat Man" does? I have watched a few episodes of "The Fat Man & Circuit Girl" but I can't figure out what the "Fat Man Contributes". Many thanks. I love the channel Jeri, entertaining & educational, perfection.

[anthanagore]

@anilksolanki i think he may contributes with his genitalia. Good enough heh

[70R4N]

(: I LOVE YOU :)

[mcklain]

I'm in love <3

[samoht1977]

This is insane... that's why I actually LOVE Jeri Ellsworth!!!

[joebliksem]

Fantastic. Thanks, this really put a smile on my face.

[kivancsifi]

well, the left channel should be the original sound, as always...

but anyway, it is a very nice project!

[therealmicksa]

suggestions:

take out the 1st sid entirely and then get the fpga to proxy both sids.

Then hook a keyboard up to the fpga so you can assign keys to all sorts of things, say:

- change waveforms or other parameters real time

- add delays between channels as well as pitch shifts

off the top of my head.

[acriked]

I am interested yes, but? why not just buy 2nd C64 with midi port?

costs prolly a bit less

[TheLittleredwoman]

Does anybody know the price of the new commodore 64

there plenty of info but no price, can,t wait to get my hands on one

[Craptron2000]

@TheLittleredwoman Prices are on their website now.

[HoneycombAgent]

Isn't there some way to modify an existing C64 without ripping it apart or attaching some techno gizmo to it to get stereo output?

[jeriellsworth]

@HoneycombAgent This is a little different than just adding a second SID. This converts mono tunes into pseudo stereo. It could be made into a cartridge.

[acriked]

@HoneycombAgent

Yes. I hope this answered your question.

[zpunout]

Love to get some stereo output files of some tunes from that invention.

[DejectedPanda]

@zpunout I'm curious too. Can't find anything on her website though.

[jeriellsworth]

@DejectedPanda @zpunout I need to fire up the board again and make some MP3's. I didn't expect, such a positive response to the video.

[HaikuAutomation]

I love the looks on the dork in the video, looks perplexed and lost most of the video when he shows up. Great stuff!

[DemiGodGnostical]

Silly woman that's not how you make a sandwich.

[nathanallan1]

I wonder what you could do for a surround sound or at least a 4-speaker system, that would be a great project using a SID and FPGA. What do you think?

[Gazdatronik]

Do want: 12 SID 8580's in a conventional keyboard, As many per voice as you wish, The filters are actually pretty nice. The interface would be difficult, but think of the musical usefulness.

Like a sidstation polysynth. Except even better.

[alphabeets]

She's out of control!! I love it.

[jeriellsworth]

@alphabeets Stand back!

[uzimonkey]

Wait, is that a motherboard that used FPGA chips you hacked into an FPGA dev board?

[jeriellsworth]

@uzimonkey I used the C1 board. I designed large parts of it in 2001-3

[Antitrack]

Sorry, but isn't it overkill to use a FPGA for just producing stereo ?

[jeriellsworth]

@Antitrack The idea is to pitch shift the second SID or other similar effects.

[blahdelablah]

@jeriellsworth

Sounds great. Just wondered if you were aware of XMOS? Seems like their designs are a perfect match for a project like this (though I appreciate the FPGA did fine and you probably had one spare, I imagine it would be easier and cheaper for others to implement with an XMOS XS1-L1). Anyway, thanks for making it. : )

[gruvinnz]

@Antitrack LOL ... you're so not a geek :-P Nothing is overkill to a true geek. :-D

[EminoMeneko]

oO

Gueek girl !

Awsome. :)

I'm a C64 owner but except "Press play on tape" and a few commands in BASIC I know nothing of that beast but I grew with these sounds too and I love them much. :)

[natalieilleana]

This is super awesome!

[Serpico261]

clever girl, i also experimented with the SID but i never would had this idea, for stereo C64

i would probably fell in love with you and not only because ur smart

[fuzzface100]

Jeri is awesome - Beauty and Brains in abundance. Marry me Jeri!! <3

[ChemicalComedown]

Great job on that commode 64 ! ! !

Thanks for uploading 5***** ; )

[flip314]

Ok, but at this point why do you need the C64 at this point? Why not just run both SIDs from the FPGA?

[DjKriegshammer]

Because the C64 is running the playback code for the song. The FPGA is just intercepting writes to the SID chip in real-time as they are happening on the C64.

One could emulate an entire C64 on a (sufficiently large) FPGA, but that would be a LOT more work than what she is doing here.

[mirabilis]

6581 <3 ^^

[gbraad]

Jeri used the second SID on a C-one mainboard :)

[cc6809]

SID rules. Great project here!

[Commodorian]

Good old Wizball. I used to load that game up just to listen to the music.

[jeriellsworth]

Unix tools: I think there are some available, but I'm not sure if they're free.

It was an EP1k30 part. Not the newest parts, but 5v tolerant and way bigger than needed for this application.

[calvinthedestroyer]

is that a FLEX - EPM10k70? I blew one of those up yesterday at work :)

yeah, it WAS being used as a DS3 framer but there was water under the chip that I didn't see until i had to change it.

[PhattyMo]

Joint Test Action Group! :-)

I had a small fascination with SID IC's a while ago,but never did anything with them..I'm jealous! your projects are just too cool..I think I'm falling in nerd-love! LOL

[nitturo]

very interesting! i'm also very interested on C64 SID sound effects! - but one issue i found on the video is the application is being runned on ms-windows (that Altera config application?) - can we do the same as easy on Linux or MacOS-X ?