wrote:Ground loop isolators shouldn't usually be needed for most setups, even old noisy sound cards. I'd test the card in another system first. If it does it there too, test it on a board outside a case (no metal contact). If it still does it, it may be defective or need cleaning.
I did just that yesterday afternoon and it's the same. What do you mean by "cleaning" the card? It looks clean 😀
Stiletto wrote on 2014-04-19, 22:48:
I know its an old thread....
But I have this exact card and if anyone has it or finds hires picture of the card I would like to have a picture.
My card has working fm-synthesis but soundblaster part of the card is not functioning.
When I got the card it was missing 8-bit controller chip from the left corner of the card and the card was in pretty beat up shape.
I found pictures of similar card and ordered P8051AH controller from china, chip seems brand new so it might be a fake.
From my scrap parts I found Dallas DS80C320 witch should be pin compatible with 8051... but as it's from scrap card it might be broken.
Picture from the link has winbond chip, so if anyone has this card or picture of it, I would like to know what exact chip is in this card.
Kekkula wrote on 2023-01-15, 10:38:I know its an old thread.... But I have this exact card and if anyone has it or finds hires picture of the card I would like to […]
Stiletto wrote on 2014-04-19, 22:48:I know its an old thread....
But I have this exact card and if anyone has it or finds hires picture of the card I would like to have a picture.
My card has working fm-synthesis but soundblaster part of the card is not functioning.
When I got the card it was missing 8-bit controller chip from the left corner of the card and the card was in pretty beat up shape.
I found pictures of similar card and ordered P8051AH controller from china, chip seems brand new so it might be a fake.
From my scrap parts I found Dallas DS80C320 witch should be pin compatible with 8051... but as it's from scrap card it might be broken.
Picture from the link has winbond chip, so if anyone has this card or picture of it, I would like to know what exact chip is in this card.
Replacing the microcontroller will not serve you since the microcontroller needs to be programmed for its specific job.
While in some cases that code can be uploaded on a running machine.
I'm certain, that on those old cards, the microcontroller was programmed before soldering it on the board.
sorry to be the bearer of bad news.
Right to repair is fundamental. You own it, you're allowed to fix it.
How To Ask Questions The Smart Way
Do not ask Why !
https://www.vogonswiki.com/index.php/Serial_port
Ok, thanks for the reply.
Well at least card has working adlib emulation. Could hook it up with disney sound system then to get digitized sound.
Or maybe try this.
https://hackaday.com/2019/06/19/reverse-engin … -sound-blaster/
https://github.com/schlae/snark-barker
... just have to get atmel 89s51 chip and programmer.
And the firmware attached to the Snark Barker project should work with your J98-MF002BR card. I confirmed a while ago that my J98-MF002 card - a less small version of yours - has the same bits for 99% of the firmware, only a couple of very minor differences like two hex values different.
So if you program a new chip, your card should work again.
Thanks.
Already ordered programmer and chip 😁
Couldn't get the card working with snark barker firmware 🙁
Sound Blaster side of the card is completely dead.
Sorry for bringing it up the thread, but I have this card on my hand for testing and found this thread while doing some research.
I have an old Willem program, do you think it will read the Intel P8051AH chip on it? If yes then I would like to make a copy of it. Thanks.
Update: I'm attaching a copy of the Program I use for dumping and flashing motherboard BIOSes, I'm not familiar with other chips. If someone with more experience could get the program and see what should I select in order to make the backup.
