Please Help ID a Bios Chip

[chris527]

Hello All,
Thanks in advance for any help. I'm trying to read a bios chip from a Amptron PM8600. I have a XG pro with updated firmware but at a loss with the markings on the chip on what to try.

The Chip -->>




Anybody know what manufacturer this might be or it equivalent , Thanks again for any help.

Chris

 

[gslick]

Most likely it is a 128Kx8 flash chip. If you just want to read it, you could try selecting something like a 29F010, 29C010, 28F010, or 28EE011 device. If you try that and the programmer reports incorrect vendor and devices IDs when you try to read the device, what values does it report for the actual vendor and device IDs?

Selecting the wrong device type usually doesn't matter if you are only trying to read the device and not program it, as long as the memory size of the selected and actual devices match.

 

[chris527]

Most likely it is a 128Kx8 flash chip. If you just want to read it, you could try selecting something like a 29F010, 29C010, 28F010, or 28EE011 device. If you try that and the programmer reports incorrect vendor and devices IDs when you try to read the device, what values does it report for the actual vendor and device IDs?

Selecting the wrong device type usually doesn't matter if you are only trying to read the device and not program it, as long as the memory size of the selected and actual devices match.

Thanks for that Info, I'm all done for the night, will give it a go tomorrow. I will look for the Id thing as well.

Chris

 

[chris527]

So I played around until i found one that passed, EN29F010, I had two motherboards with the same chip markings and both went well.

Thanks again,

Chris

 

[gslick]

I don't think I have every heard of Eon Silicon Solution, Inc., previously.

If that flash chip is actually a EN29F010 with a customer part number printed on it, according to the datasheet it should have a MANUFACTURER ID of 1Ch and a DEVICE ID of 20h.

JEDEC PUBLICATION
Standard Manufacturer’s Identification Code
JEP106-K (Revision of JEP-106-J)
SEPTEMBER 2001

 

[chris527]

Thanks for the Data sheets, they will be helpful to me in the future, The only marking on both chips begins with H.T. like in the picture I posted. No markings on the bottom. When I searched the database in the programmer software, I tried quite a few other numbers you gave me to search, I then searched 29F010 and that came up along with a few others. I tried the Eon and it was able to pass and read it so I called it good. Could have been some clone chip that Micro products Center was using at the time, I do know both boards came from the same supplier and both are from the mid 90's. I'm still green at the programmer and its features so forgive me if I'm not understanding everything yet. If a bios dump would help I can upload that or take a screen shot of the programmer codes when I load it up. I will look at the codes more carefully and re read it and see what it says.






Chris

 

[Chuck(G)]

I think I still have a PM8600 kicking around here, if it would provide any additional information.