640K!enough wrote on 2022-01-28, 03:34:

jaca_kk wrote on 2022-01-27, 14:44:

Does the IW78C21M1 part number determine a masked ROM for GUS?

Yes, that holds the ROM-based 1-MiB instrument bank. To my knowledge, there is only one version of that ROM; at least, on every board that has been mentioned here, the ROM contents have been verified to be exactly the same. If another version was ever released, nobody here has ever mentioned it. If you search this thread, you will find the exact UTSource page from which a number of participants have sourced the original ROM. At least so far, nobody has complained of defective chips or different/corrupt content, so as long as the part is still available, that should be a good source.

Thanks a lot for your explanation. The only link I found in this thread didn't work anymore, but they still offer used ROMs -> https://www.utsource.net/itm/p/457141.html
I bought some AM78C201AKC chips on eBay but they got expensive - with import taxes I paid around $30 (USD) for one pcs.
I'm going to design my own low-profile version of the card with built-in DRAM, four 16Mbit (4Mx4) ICs - 8MB total as everything has to be squeezed and also pay some extra attention to the quality of analog part and power supply. I can post this project in the future if anyone would be interested, but I suppose it will take time as this is just my hobby.

jaca_kk wrote on 2022-01-28, 08:43:

Thanks a lot for your explanation. The only link I found in this thread didn't work anymore, but they still offer used ROMs -> https://www.utsource.net/itm/p/457141.html
I bought some AM78C201AKC chips on eBay but they got expensive - with import taxes I paid around $30 (USD) for one pcs.
I'm going to design my own low-profile version of the card with built-in DRAM, four 16Mbit (4Mx4) ICs - 8MB total as everything has to be squeezed and also pay some extra attention to the quality of analog part and power supply. I can post this project in the future if anyone would be interested, but I suppose it will take time as this is just my hobby.

Definitely do post your project!

What a time to live in - you folks make me think that I might actually get a good GUS in my lifetime 😁

Best of luck!

kikipcs wrote on 2022-01-29, 22:39:

What a time to live in - you folks make me think that I might actually get a good GUS in my lifetime 😁

Unless things change again after the Chinese New Year, the AM78C201KC from utsource might have dried up (no more direct orders, just inquiry option left - which at least for the AKCs always resulted in 'no stock').
I've already put in an inquiry, but no high hopes.

MJay99 wrote on 2022-01-29, 23:01:

kikipcs wrote on 2022-01-29, 22:39:

What a time to live in - you folks make me think that I might actually get a good GUS in my lifetime 😁

Unless things change again after the Chinese New Year, the AM78C201KC from utsource might have dried up (no more direct orders, just inquiry option left - which at least for the AKCs always resulted in 'no stock').
I've already put in an inquiry, but no high hopes.

I was trying to buy there just about 2-3 weeks ago, they said "out of stock" 🙁

A bit off topic, but at the 24 Hours of Daytona race last weekend, there was a car with what looks like the GUSar logo, just with the S in a different position. I’m wondering if the GUSar Lite sound card logo is referencing some company I’ve never heard of. The car is run by a Russian team, so I wonder if it’s a Russian company…

polpo wrote on 2022-01-31, 15:51:

A bit off topic, but at the 24 Hours of Daytona race last weekend, there was a car with what looks like the GUSar logo, just with the S in a different position. I’m wondering if the GUSar Lite sound card logo is referencing some company I’ve never heard of. The car is run by a Russian team, so I wonder if it’s a Russian company…
5157B4F9-22FC-41E5-BB52-7B602F76AD71.jpeg

What looks to be a "valve manufacturer"...

https://gusarm.com/news/index.php?PAGEN_1=2

kikipcs wrote on 2022-02-01, 10:31:

polpo wrote on 2022-01-31, 15:51:

A bit off topic, but at the 24 Hours of Daytona race last weekend, there was a car with what looks like the GUSar logo, just with the S in a different position. I’m wondering if the GUSar Lite sound card logo is referencing some company I’ve never heard of. The car is run by a Russian team, so I wonder if it’s a Russian company…
5157B4F9-22FC-41E5-BB52-7B602F76AD71.jpeg

What looks to be a "valve manufacturer"...

https://gusarm.com/news/index.php?PAGEN_1=2

Hmmm... "Russian"... "Valve"... 🤔

shock__ wrote on 2015-02-18, 21:09:

Current status: This project is closed to previous donors for now - No exceptions, no need to ask via E-Mail/PM or the like.
A first batch of the final run has been produced and is being delivered. More batches/orders will follow within the next weeks/months. Keep watching the thread for updates - at worst you will be contacted (you won't lose your slots)

Any new updates on the progress? I am very interested in purchasing one unit. Is it still possible to place the pre-order ?

No pre-orders and ooops ... I guess the "few months" have been almost/over a year again.

I'm currently meditating some alternative roadways since -i want to be honest there- this project has been a crawl since forever and I don't exactly see it take off any time soon - if someone wants to take over the production and logistics at a small margin (we'd define before hand) and can prove to be trustworthy I can see a run still happening, otherwise not so much. This is mostly what has been holding me back apart from minor personal things.

My current idea is to release the gerber files for production (with an explicit wish/silkscreen to remain financially accessible [instead of "non commercial"]) and sell off a larger quantity of the remaining stock I have and keep a limited amount for myself. Previous donors/supporters will have the option to have their remaining credit in InterWave ICs shipped (just shipping costs need to be covered) or get a 25% refund of their donation if they wish (afterall pretty much all of the donations has been used up and I made no money from this). Any input on this approach?

Also hoorj (I guess), this project got its' own video on LGR today.

maybe an idea for dreamblaster / serdashop ?

Yeah, I'd definitely be interested in getting one of these cards also. But I understand the limited nature of this project.
Would some kind of crowdsource campaign for a batch be viable? Or is that biting off more than what anyone wants to chew?

shock__ wrote on 2022-03-14, 17:00:

No pre-orders and ooops ... I guess the "few months" have been almost/over a year again. […]
Show full quote

No pre-orders and ooops ... I guess the "few months" have been almost/over a year again.

I'm currently meditating some alternative roadways since -i want to be honest there- this project has been a crawl since forever and I don't exactly see it take off any time soon - if someone wants to take over the production and logistics at a small margin (we'd define before hand) and can prove to be trustworthy I can see a run still happening, otherwise not so much. This is mostly what has been holding me back apart from minor personal things.

My current idea is to release the gerber files for production (with an explicit wish/silkscreen to remain financially accessible [instead of "non commercial"]) and sell off a larger quantity of the remaining stock I have and keep a limited amount for myself. Previous donors/supporters will have the option to have their remaining credit in InterWave ICs shipped (just shipping costs need to be covered) or get a 25% refund of their donation if they wish (afterall pretty much all of the donations has been used up and I made no money from this). Any input on this approach?

Also hoorj (I guess), this project got its' own video on LGR today.

Hey Shock, did you ger my PM ?

Would be interested in getting a card, too.
So I would be happy if somebody (e.g. serdashop) takes over production/logistics and helps selling them.
(Hopefully, at least partially assembled: my soldering skill are poor, I'd be limited to through-hole component, I'd need to find help if surface mounted component aren't pre-assembled).

I'd be interested too in getting a card, even if I had to assemble it myself. But would still gladly purchase a card if available at a shop too.

We're talking about making the cards available, shouldn't take 3 months...

GUSty time ?

shock__ wrote on 2022-03-14, 17:00:

Also hoorj (I guess), this project got its' own video on LGR today.

I just saw this today and came to share. 😀

https://www.youtube.com/watch?v=TWeWGiMYwsE

I sold my UltraSound Classic some time ago and deeply regret it.

sorry that I will have to ask this again - but there was a mouser basket with needed parts at some point posted on the thread? do I remember this correctly?
if someone knows the link please share it again, I need to finally make some cards I agreed to assemble long ago but I completely forgotten all about until now 🙁

The companies selling commercial products charge in range hundred dollars for a simpler/cheaper to manufacture boards (e.g. wavetable daughterboards), so they probably like to sell this product for couple of hundred dollars, 300 and up.
I really hope some of folks here pull up their sleeves and do the non-commercial release/production. The target of 200 USD final cost is reasonable IMO

keropi wrote on 2022-03-16, 16:53:

sorry that I will have to ask this again - but there was a mouser basket with needed parts at some point posted on the thread? do I remember this correctly?

You can find it in this post:
Re: Newly made Gravis Ultrasound compatible cards ... what's the degree of interest?