Hi friends, if you are serious about CH341A - get a version with a green PCB board, it's more likely to give you 3.3V (instead of the erroneous 5V which the bugged version of black CH341A could be giving). And just in case, verify the output pins with a multimeter, to see it's really a 3.3V... Also, why do you need a test clip at all? If your board has DIP8 flash chip, most likely it's inside a socket - and possible to remove using a PLCC / DIP8 remover, to directly plug into the "flashrom-supported" programmer like CH341A. > flash emulator like the Dediprog EM100 That's very interesting, never heard of it :) Although they are quite expensive
сб, 27 нояб. 2021 г. в 21:39, Angel Pons <th3fan...@gmail.com>: > > Hi Pedro, > > On Fri, Nov 26, 2021 at 11:02 PM Pedro Erencia <peren...@gmail.com> wrote: > > > > Hi, > > > > I'm thinking about porting coreboot to a FM2A88X Extreme4+ board. This > > board has a DIP8 flash with a socket and I wondered what would be the best > > way to do an efficient development cycle. Ideally, I suppose that the best > > option would be to use a clip test and a CH341A, but all the clips that I > > found are SOIC/SOP. Should I buy a SOIC clip and an adapter from SOIC to > > DIP? I've seen those adapters, but I'm not sure if they will fit well in > > the mobo DIP8 socket. > > I wouldn't recommend a CH341A for the same reasons Nico explained, and > would suggest the same alternatives. > > I've done a lot of development on the Asrock B85M Pro4 (a completely > different board, but also has a socketed DIP8 flash chip) and, for me, > the most efficient development cycle is to use a flash emulator like > the Dediprog EM100. However, flash emulators aren't cheap. Before I > had the EM100, I simply moved the flash chip back and forth by hand, > from the mainboard to a breadboard wired to a CJMCU FT2232HL mini > module (external programmer) and viceversa. I added another DIP8 > socket between the flash chip and the mainboard's socket, so that I > could easily and quickly remove and replace the flash chip. > > > Aside from the mechanical question, I'd appreciate any advice about the > > safety of externally programming the board. I don't have the schematics and > > I wonder if there could be any risk of damaging the board. > > If you remove the flash chip from the mainboard to reflash it, it's > practically impossible to damage the board. > > > Cheers. > > > > _______________________________________________ > > coreboot mailing list -- coreboot@coreboot.org > > To unsubscribe send an email to coreboot-le...@coreboot.org > > Best regards, > Angel > _______________________________________________ > coreboot mailing list -- coreboot@coreboot.org > To unsubscribe send an email to coreboot-le...@coreboot.org _______________________________________________ coreboot mailing list -- coreboot@coreboot.org To unsubscribe send an email to coreboot-le...@coreboot.org
