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Gravis Ultrasound Class Rev 3.74 Missing IC

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Reply 20 of 30, by Evert

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Yeah, I suppose so. Was so keen to get a GUS that I overlooked small details. A hard lesson learnt either way.

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Reply 21 of 30, by bjt

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Awesome work keropi. This GUS may live yet!

Reply 22 of 30, by HighTreason

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Good work indeed. I considered dumping mine but I have a much earlier revision, the card looks different enough that I thought it was unlikely to be compatible and would probably not be worth it.

Think I'm on either a 2.4 or a 3.4. I'd go with 3.4.

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Reply 23 of 30, by mr_bigmouth_502

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Evert wrote:
I won this card in an eBay auction. As you can see it's in great condition, but it's missing an IC, based on what I could gather […]
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I won this card in an eBay auction. As you can see it's in great condition, but it's missing an IC, based on what I could gather it's a GAL16V8B-25LP. I saw that you can buy them on eBay for relatively little money. Do they need to be pre-programmed or can I just pop one of them into the card and it will work? Thank you in advance for any advice.

AMBuoDFl.jpg

I wonder, what's with all the pins right by the ISA connector? Is that like a passthrough?

Reply 24 of 30, by JayCeeBee64

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mr_bigmouth_502 wrote:
Evert wrote:
I won this card in an eBay auction. As you can see it's in great condition, but it's missing an IC, based on what I could gather […]
Show full quote

I won this card in an eBay auction. As you can see it's in great condition, but it's missing an IC, based on what I could gather it's a GAL16V8B-25LP. I saw that you can buy them on eBay for relatively little money. Do they need to be pre-programmed or can I just pop one of them into the card and it will work? Thank you in advance for any advice.

AMBuoDFl.jpg

I wonder, what's with all the pins right by the ISA connector? Is that like a passthrough?

It's for the daughtercard that allows 16-bit sampling:

http://jh.haxor.fi/gf1/cards.html

Ooohh, the pain......

Reply 25 of 30, by Zup

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HighTreason wrote:

Good work indeed. I considered dumping mine but I have a much earlier revision, the card looks different enough that I thought it was unlikely to be compatible and would probably not be worth it.

Think I'm on either a 2.4 or a 3.4. I'd go with 3.4.

Maybe it should be a good idea dumping it and compare with the other dump. I don't think so, but maybe the GAL contents are equal, and the changes on the board design are in other places. I guess it would be good to know if you can mount any GAL on any GUS card.

Also, if anyone have a faulty GUS would find those dumps very interesting.

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Reply 26 of 30, by gdjacobs

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keropi wrote:

heh, don't feel that way Evert - we all bought the wrong thing at some point 😁

This isn't a mistake. He bought a GUS _AND_ an adventure.

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Reply 27 of 30, by sergio27ru

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Hello guys, may be some one can make a GAL's dump of GUS version 3.4?

Reply 28 of 30, by Hezus

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That's quite the necro post @sergio, but now I'm really curious if Evert ever got his GUS working 😁

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Reply 29 of 30, by sergio27ru

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Found one for history 😀

Reply 30 of 30, by ltning

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sergio27ru wrote on 2020-12-15, 04:18:

Found one for history 😀

I have a 3.74 board (just arrived today along with a rev 3.4, set me back about 150 USD), but I have no idea how to make a dump of that IC - nor if it would be useful to anyone.

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