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 (<[email protected]>) 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 < > [email protected]>: > > > > 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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