short answer: analog line impedance termination.

HanJammer wrote on 2021-11-07, 23:15:

AppleSauce wrote on 2021-11-07, 06:32:

I have similar looking ET6100 with 4,5MB... But again - that's overkill for those cards.

That's Gainward.

Oh wow thanks for letting me know. One more mystery solved 😀

Finally traced down a 386 model that was missing in my collection.

mpe wrote on 2021-11-08, 10:43:

Finally traced down a 386 model that was missing in my collection.

DSC_0886.jpeg

Any future build in mind?

I'd love to. But this seems to be a J38605DX model which is a variant that needs its own mb. Need to do some research.

mpe wrote on 2021-11-08, 11:07:

I'd love to. But this seems to be a J38605DX model which is a variant that needs its own mb. Need to do some research.

Post on cpu world.

This AMD 386 board with no liquid damage. (thanks to GS Saft "Sealed NiCd battery")

1Standby Mode (Am386SXL/SXLV Only)
2The true static design of the Am386SXL/SXLV micro-
3processor allows for a Standby Mode. At any operating
4speed, the microprocessor will retain its state (i.e., the
5contents of all its registers). By shutting off the clock
6completely, the device enters Standby Mode. Since
7power consumption is proportional to clock frequency,
8operating power consumption is reduced as the fre-
9quency is lowered. In Standby Mode, typical current
10draw is reduced to less than 20 microamps at DC. Not
11only does this feature save battery life, but it also sim-
12plifies the design of power-conscious portable applica-
13tions in the following ways.

More ewaste junk

Just some bent pins but overwise a healthy looking V2 1k.

It unfortunately has some bad tearing. We'll see what can be done with it.

Runs great, without any problems. I love that purple pcb.
I bought a brand new Geforce4 heatsink off Ebay some time ago and it only felt right to give it to this one. It almost looks brand new now.

The ti4800SE is just missing that unique heasink. Seems to be in good condition.

I finally found a Voodoo4. In theory, it still may be repairable. The pcb is intact with no broken traces. However I'm not skilled enough to ball solder a new VSA100, let alone have the tools. If nothing else, I could use it to repair any Voodoo4s I may come across in the future.

I'm pretty sure its a GF256. That heatsink is glued on tight. And I'm afraid of removing it. The only question is whether its an SDR or DDR version.

I never used a Mach64. I don't know much about it.

The SB2.0 is missing its OPL chip. I don't have any spares, but one of my other cards can loan it for testing.

This Tseng card seems perfect for my 386 build.

Its missing its eprom. Not sure what chipset its using.

Now here's something interesting. A Nvidia NV1, which is unfortunately missing its eprom.
I didn't see any memory expansion modules at the ewaste site.
I already ordered a Sega Saturn controller breakout card off Ebay. https://www.ebay.com/itm/324735975372?h ... w6Z5g8NeS I don't have any of the cables that I need for it though.

Aublak wrote on 2021-11-09, 14:00:

A very dirty Kelvin 64-VLB
Its missing its eprom. Not sure what chipset its using.

I think the Kelvin 64 VLB uses a Cirrus Logic CL-GD5434, it should be pretty fast.

Aublak wrote on 2021-11-09, 14:00:

IMG_20211109_075008.jpg The SB2.0 is missing its OPL chip. I don't have any spares, but one of my other cards can loan it for te […]
Show full quote

IMG_20211109_075008.jpg
The SB2.0 is missing its OPL chip. I don't have any spares, but one of my other cards can loan it for testing.

This Tseng card seems perfect for my 386 build.

IMG_20211109_092210.jpg
Its missing its eprom. Not sure what chipset its using.

IMG_20211109_075034.jpg
Now here's something interesting. A Nvidia NV1, which is unfortunately missing its eprom.
I didn't see any memory expansion modules at the ewaste site.
I already ordered a Sega Saturn controller breakout card off Ebay. https://www.ebay.com/itm/324735975372?h ... w6Z5g8NeS I don't have any of the cables that I need for it though.
IMG_20211109_075100.jpg

What part of Ohio are you finding all this vintage ewaste?

Aublak wrote on 2021-11-09, 14:00:

IMG_20211109_075008.jpg The SB2.0 is missing its OPL chip. I don't have any spares, but one of my other cards can loan it for te […]
Show full quote

IMG_20211109_075008.jpg
The SB2.0 is missing its OPL chip. I don't have any spares, but one of my other cards can loan it for testing.

This Tseng card seems perfect for my 386 build.

IMG_20211109_092210.jpg
Its missing its eprom. Not sure what chipset its using.

IMG_20211109_075034.jpg
Now here's something interesting. A Nvidia NV1, which is unfortunately missing its eprom.
I didn't see any memory expansion modules at the ewaste site.
I already ordered a Sega Saturn controller breakout card off Ebay. https://www.ebay.com/itm/324735975372?h ... w6Z5g8NeS I don't have any of the cables that I need for it though.
IMG_20211109_075100.jpg

What part of Ohio are you finding all this vintage ewaste?

Found this bad boy the other day. Whats a good way to clean it up?

Law212 wrote on 2021-11-09, 18:39:

Found this bad boy the other day. Whats a good way to clean it up? https://i.imgur.com/MKLzPPU.jpg https://i.imgur.com/GbXD2iH. […]
Show full quote

Found this bad boy the other day. Whats a good way to clean it up?

Just plain old dish wash liquid and hot water with a cotten rag will be fine for the most part. Just be care around the top vent. Using a few cotten buds for them i'd say.

Caluser2000 wrote on 2021-11-09, 18:43:

Just plain old dish wash liquid and hot water with a cotten rag will be fine for the most part. Just be care around the top vent. Using a few cotten buds for them i'd say.

Thanks!

Unknown_K wrote on 2021-11-09, 16:34:

Aublak wrote on 2021-11-09, 14:00:

IMG_20211109_075008.jpg The SB2.0 is missing its OPL chip. I don't have any spares, but one of my other cards can loan it for te […]
Show full quote

IMG_20211109_075008.jpg
The SB2.0 is missing its OPL chip. I don't have any spares, but one of my other cards can loan it for testing.

This Tseng card seems perfect for my 386 build.

IMG_20211109_092210.jpg
Its missing its eprom. Not sure what chipset its using.

IMG_20211109_075034.jpg
Now here's something interesting. A Nvidia NV1, which is unfortunately missing its eprom.
I didn't see any memory expansion modules at the ewaste site.
I already ordered a Sega Saturn controller breakout card off Ebay. https://www.ebay.com/itm/324735975372?h ... w6Z5g8NeS I don't have any of the cables that I need for it though.
IMG_20211109_075100.jpg

What part of Ohio are you finding all this vintage ewaste?

Near Cleveland

Law212 wrote on 2021-11-09, 18:58:

Caluser2000 wrote on 2021-11-09, 18:43:

Just plain old dish wash liquid and hot water with a cotten rag will be fine for the most part. Just be care around the top vent. Using a few cotten buds for them i'd say.

Thanks!

You are most welcome.

Law212 wrote on 2021-11-09, 18:39:

Found this bad boy the other day. Whats a good way to clean it up?

I think you want to open that bad boy up and see if he's got a tummy ache as well. The batteries tend to leak.

Take it apart. Top and bottom halves of the clamshell you can wash in your kitchen sink with a sponge and dish soap. If there are stubborn stains, use a magic eraser/melamine sponge. Take care not to agitate/loosen the labels on the bottom.

If any of it looks yelllowed, now would be an excellent time for retrobrite.

Pull each keycap and put in a solution of dish soap and hot water, then rinse/wipe clean. The area under the keycaps is going to be FILTHY. i don't recall if the A500 was individual switches or membrane, but you're going to have a TON of debris down there that will need to be blown out.

Pick up a set of antistatic plastic bristled cleaning brushes from ebay, and brush off all the electronics and blow them out with an air duster.

Open up the floppy drive, and clean the drive heads with a q-tip and some rubbing alcohol. Put a small drop of lithium grease on the drive mechanism (should look like a long corkscrew)

Law212 wrote on 2021-11-09, 18:39:

Found this bad boy the other day. Whats a good way to clean it up?

Joakim wrote on 2021-11-09, 20:15:

Law212 wrote on 2021-11-09, 18:39:

Found this bad boy the other day. Whats a good way to clean it up?

I think you want to open that bad boy up and see if he's got a tummy ache as well. The batteries tend to leak.

That is an A500 not a A500+, those do not have batteries.