Question I found this weird card on my old mb.

Apr 3, 2019
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Sorry, i couldn't access to website it keeps saying "internal server error:500"

The motherboard was tooo old that it had an "nvid 9500 GT Gpu" on it .I can't remember the model but the PC itself was made by Asus if it helps.

I have taken it from my uncle in 2007-2008. As i remember he was saying "this device keeps the computer safe " And back that years . He was installing DeepFreeze on the computer to prevent me from deleting the important stuff.

I just quickly googled and these things can keep data up to 512kb's 😯
If it has something written in it. May be we can read the data ? (idk if it worths tho) How can we even put this thing on
 
I think COL Geek has nailed it. Searching for the number on the large chip., "D27C010J - 200" led me to a website

https://www.cpu-galaxy.at/CPU/Ram Rom Eprom/other_intel_eproms/other_intel_erpom.htm

that says a VERY similar number is for an Intel CHMOS EPROM, and led to this Data sheet

https://www.cpu-galaxy.at/CPU/Ram Rom Eprom/other_intel_eproms/other_intel_erpom-Dateien/D27C010_Datasheet.pdf

CHMOS, I found, is the acronym Intel used for High-Density CMOS chips.

According to this data sheet, this is a UV-Erasable EPROM, which explains the window on the top. That is, it can only be erased by exposing the chip inside to UV light. Then it can be programmed using specific higher voltages, and read at standard 5 VDC TTL voltages. Since this unit can be erased with UV light through the window, it was intended for use at the development stage of a system, where successive versions of the software could be loaded into the unit. Once the software was completely perfected, a similar version of the chip with NO window in the plastic case was available, pre-erased, to be programmed electrically and then installed in a system that would not be updated later.
 
Apr 3, 2019
4
0
10
0
I think COL Geek has nailed it. Searching for the number on the large chip., "D27C010J - 200" led me to a website

https://www.cpu-galaxy.at/CPU/Ram Rom Eprom/other_intel_eproms/other_intel_erpom.htm

that says a VERY similar number is for an Intel CHMOS EPROM, and led to this Data sheet

https://www.cpu-galaxy.at/CPU/Ram Rom Eprom/other_intel_eproms/other_intel_erpom-Dateien/D27C010_Datasheet.pdf

CHMOS, I found, is the acronym Intel used for High-Density CMOS chips.

According to this data sheet, this is a UV-Erasable EPROM, which explains the window on the top. That is, it can only be erased by exposing the chip inside to UV light. Then it can be programmed using specific higher voltages, and read at standard 5 VDC TTL voltages. Since this unit can be erased with UV light through the window, it was intended for use at the development stage of a system, where successive versions of the software could be loaded into the unit. Once the software was completely perfected, a similar version of the chip with NO window in the plastic case was available, pre-erased, to be programmed electrically and then installed in a system that would not be updated later.

Wow i wasn't expecting that much . I don't need it to work anymore. I am just going to break it to half and throw it to trash bin.
I was just wondering if it has anything important from old days :D
 

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