Ooops... here's the attachment El mié, 17 nov 2021 a las 23:51, Betibeteka Beranduetxea (< artxita...@gmail.com>) escribió:
> Hi, > > This is what I'm getting: > > https://aliexpress.com/item/1005001614869060.html (adapter) > https://aliexpress.com/item/32725360255.html (burner + clamp,dirty cheap, > I wanted the clamp, couldn't resist it) > https://es.aliexpress.com/item/1005002412971490.html (puller) > > About the chip: It seems to me that it could be this (please see > attachment) However i looked for it on the web and it seems to be a 4 MB > chip, while flashrom-listed one would be 512 KB? I hope it will be right... > > If I'm getting it right, FreeDOS 1.3RC4 includes flashrom? It would be > nice to put anything BIOS-related on a salvaged laptop disk. Perhaps with a > DOS boot partition. Hell, last time I flashed a BIOS was almost a decade > ago, and I really never played with DOS much more than just doing a win98 > boot floppy. But, it could be interesting to do and to have a little hard > disk ready for flashing any BIOS I could play wildly with at least 2-3 > machines. > > Does FreeDOS flashrom work fine? Or are there any known bugs? > > Best wishes > > > El mié, 17 nov 2021 a las 16:19, Ivan Ivanov (<qmaster...@gmail.com>) > escribió: > >> Regarding the flashing equipment (test clip, programmer) - you could >> refer to >> http://dangerousprototypes.com/docs/Flashing_a_BIOS_chip_with_Bus_Pirate >> . There's a SOIC8 test clip with 2.54mm bent pins, so that you can use >> any 1P wires of any length and material (preferably copper), and >> CH341A programmer with a green PCB. >> >> You'd need to re-check this, but it seems to me that flashrom doesn't >> support PMC Pm49FL004T : although not sure, I could only find messages >> like this one: >> https://mail.coreboot.org/pipermail/flashrom/2014-May/012437.html >> . The question is, could this chip be replaced with another >> alternative chip that's supported by flashrom? But, if you'll still >> need to read the existing firmware from Pm49FL004T , then you may have >> to get a proprietary programmer (that'll be really overpriced in >> comparison to $2 CH341A). >> >> ср, 10 нояб. 2021 г. в 21:00, Betibeteka Beranduetxea < >> artxita...@gmail.com>: >> > >> > Hi >> > >> > Thank you very much for the heads-up about flashrom. >> > >> > As said, motherboard is OK with flashrom, but I'm unable to find my >> BIOS chip on the supported hardware list. >> > >> > These are the numbers on the chip: >> > PMC. >> > 0639 >> > Pm49FL004T-33JCE >> > >> > As you look much more fluent than me on this matter, could you give any >> pointer to that chip or an equivalent one? >> > >> > I looked for the PLCC puller on aliexpress and I have seen some cheap >> ones, but, would you mind to give me any pointer, should you have any >> preferences. Same for the programmer... >> > >> > With that equipement, I could do many tests without fear to brik the >> machine.... >> > >> > History is, since 2012 I'm using an allmost identical machine to run >> LinuxCNC. I have been unable to find any other with a so low jitter < 20 >> usec (excellent for stepper pulse generation). Even current systems give me >> more jitter. Then this second machine came to me. Only differences are in >> the case: hard disk placement and frontal USB ports vs USB multicard >> reader. OS is exactly the same, only BIOS version differs. However, jitter >> in this second machine is 3-4x worse. That's the reason why I think a BIOS >> update is in order. >> > >> > Again, thank you very much >> > >> > Kind regards from Spain >> > >> > Roman >> > >> > >> >
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