Bad smell=fried board? Statistical problem

[kammedo]

Question : if a board smells very badly as fried, but you cant see any hint of a fry on it, how high is the possibility that this board is fried?
Its a SNES dev board, which plugged in the SNES does _nothing_ and only outputs a while screen.
I dumped the ROM with my (new :D) gdsf7, and all I got was a 513KB file...strage indeed, because it has no SNES rom header information (the info at FFB0 etc).
Help!!

[babu]

If it smeels bad.. that can't be a good sign ;)
I would recommend that you try to dump the ROM using something like a eprom programmer.
but hopefully someone with a bit more knowledge could step in here and tell me how wrong I am and how you really should be doing ^_^

edit: btw. you've got a pm ;-)

[Calpis]

Does the SNES "dev board" have a ROM to even dump? The GDSF7 is not a miracle device and can damage a cart/be damaged by a cart if there are conflicts. It's obviously not wise to use insert anything other than standard game carts into a copier, you know it can't do any good and it can possibly do a lot of harm.

[kammedo]

Does the SNES "dev board" have a ROM to even dump? The GDSF7 is not a miracle device and can damage a cart/be damaged by a cart if there are conflicts. It's obviously not wise to use insert anything other than standard game carts into a copier, you know it can't do any good and it can possibly do a lot of harm.

As far as I've seen it could be a lockout chip issue as well...

I tested it first in my snes obviously :P, then in the GDSF7. And back in the SNES. The results where the same. The board has two modes : PC & SNES, which you can switch to with a (haha) switch, obviously when power is off :P.
I think I know where to get an eprom readed...at university ^^.

It has 9 sram chips and one rom chip (labeled "MONITOR", which seems to be the same as the GDSF one).

Has somebody the datasheet for KM681000LP-10 and KM681000LP-10L chips?

WHAT? You need an eprom machineeeeee...

Ah well, goodbye proto lol.

You need to STOP and not do anymore harm.

And find someone with an eprom reader.

And stop? :P

[ASSEMbler]

WHAT? You need an eprom machineeeeee...

Ah well, goodbye proto lol.

You need to STOP and not do anymore harm.

And find someone with an eprom reader.

[ASSEMbler]

stop i.e. get proper equipments

[kammedo]

stop i.e. get proper equipments

catched that, dont worry :lol: !
I presume there are few eprom readers for more chip models? Or is there a specific eprom reader for every model?
Which other tools would you recommend?

[ASSEMbler]

you can get a cheap one that reads that type of eprom, no need to get a machine that does everything like PICs etc.

I forget where, but there's a real cheap one you can buy, I think off ebay.
Damn my memory, calpis will know when he's on.

[kammedo]

you can get a cheap one that reads that type of eprom, no need to get a machine that does everything like PICs etc.

I forget where, but there's a real cheap one you can buy, I think off ebay.
Damn my memory, calpis will know when he's on.

But is it worth the effort? Now, excluding the fact I could need it in future for other dumpings, the board has only one EPROM chip, and that's labeled MONITOR (as I stated before). Obviously its some kind of BIOS (which _maybe_ could be usefull to gather information on the PC-dev board comunication), but apart of that, considering the fact that its an SRAM board, and that very probably the SRAM doesnt have any data in it anymore because of the Battery going off over time,
I would for a first try to see if all SRAM chips are intact..but for that, i need to plug the board in a SNES and, which you said shouldnt be done because it could damage the board even more.

Thoughts?

PS : It would be hilarious if it turned out to be only a simple CIC issue :lol:

[Calpis]

The KM681000 is just a 628128. Get a datasheet here: http://www.datasheetarchive.com/sear...10&q=upd431000

If you can't get the EPROM dumped at school, I think the programmer Assembler is trying to recall is the Willem programmer which is a notoriously cheap DIY kit. These are frequenty sold preassembled on eBay or through stores such as www.sivava.com. You can find what each model programs at www.willem.org.

[kammedo]

The KM681000 is just a 628128. Get a datasheet here: http://www.datasheetarchive.com/sear...10&q=upd431000

If you can't get the EPROM dumped at school, I think the programmer Assembler is trying to recall is the Willem programmer which is a notoriously cheap DIY kit. These are frequenty sold preassembled on eBay or through stores such as www.sivava.com. You can find what each model programs at www.willem.org.

So just to be sure, this one could do the job :
http://cgi.ebay.com/Advanced-Willem-...ayphotohosting

[Calpis]

Yep

[kammedo]

Tested the battery. Empty, so no data on the SRAMs :/.
Shitty.

Any chances to test the single SRAM chips / board chips without frying the board totally?

Just to inform you, by exchanging the battery with the one from a broken FEoEZ cart (:lol:) I was able to test the SRAM chips. All of them seemed to work just flawlessy, just the BIOS wasnt responding (Vcc GND voltage lower as 1V on my tester). So i risked another try and pushed it in the SNES, and the BIOS gaved me 4.9 V. Great.
So i hooked my (still running) snes to the Indy (yeah I dont have a tv in my room so i have to use my indy video-in), popped up capture, and still got a yellow screen. Damn.

I rechecked every single chip of the board with the tester but they all seemed to work, so I dediced (and I hereby ask ASSEMBler for forgiveness for the crazyness) to hook it up once again to the GDSF7 and give it a try to dump the bios. Its 32K in size, the GDSF7 dumps min 2Mbit so the rest is shit. I got back to my pc with the floppy, opened HW, cutted the image down to 32K, and modded the mapping byte in the ROM id header to a proper one (was FFFF) and opened it with geiger's SNES9x emulator aaaaand - i got the same screen I got on my indy. ^^

I am happy!

[Alchy]

As far as non-automated spam goes, you're not exactly subtle, eh? I thought you guys were supposed to gain our trust first?

Even if you're not a shill, Kammedo's problem is with SNES dev boards rather than PCs.

:rolleyes: