The markings on the left side (Spectrum, Inc.; DT55B) looks like a vendor name and model number to me 😀

Any reason to think it is not correct?

mpe wrote on 2020-02-25, 12:29:

The markings on the left side (Spectrum, Inc.; DT55B) looks like a vendor name and model number to me 😀

Any reason to think it is not correct?

I guess they're implicitly asking for documentation or a search term that will find them some.

mpe wrote on 2020-02-25, 12:29:

The markings on the left side (Spectrum, Inc.; DT55B) looks like a vendor name and model number to me 😀

Any reason to think it is not correct?

Ye hehe wanted to know what the jumpers are for 😉 just had time to try it in my 286’ without any luck 😀

The DS1292 is basically a programmable DIP switch so the jumper next to it is probably used to clear its settings/reset to defaults, then you'd need software to change them... no idea what the other jumper would be.

jmarsh wrote on 2020-02-25, 12:57:

The DS1292 is basically a programmable DIP switch so the jumper next to it is probably used to clear its settings/reset to defaults, then you'd need software to change them... no idea what the other jumper would be.

Thats correct, see here
https://elcodis.com/parts/5802516/DS1292.html#datasheet

You may give testext (testx.exe) a try while installed to see its current configuration.

If this is providing EMS memory I bet it is configuring the address of EMS frame window.

Given by the manufacture date of the DS1292 I think the battery is pretty much guaranteed to be dead.

You card looks very similar to the RAMPAT whcih has also a DS1292:
http://www.vcfed.org/forum/showthread.php?474 … ry-card-drivers

You may try these drivers.