Hi Pedro,
On Fri, Nov 26, 2021 at 11:02 PM Pedro Erencia perencia@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.
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Best regards, Angel