Hi Peter, On Thu, Oct 18, 2012 at 10:10 AM, Peter Stuge <[email protected]> wrote: > Graeme Russ wrote: >> >> MX25L1606E >> > >> > MXIC yep. Solder something to it so that you can reprogram. Use the >> >> I was thinking of buying an 8 pin SOIP test clip > > Yes, that of course works too. > > >> > VCC on the chip for programming. Hold the mainboard in reset while >> > you drive the SPI signals. I would check first that the chipset >> > doesn't sink too much current. (Ampmeter+2k2 resistor between VCC >> > and one signal at a time. The current should stay well under 1.5mA.) >> >> I have an in-circuit programmer I used on another board (which had a >> breakout header for the SPI flash). Do you think I could just use this >> with the board powered-down? > > Unsure. You would then be powering one of the 3v3 rails (where the > flash chip is connected) from the programmer, without powering any > other rail on the board. The southbridge may not like it at all > when your programmer drives the SPI pins in that state.
Hmmm, I wonder what the potential for permanent damage is? So to be safe: - Jumper the front panel reset pins - Power-on the motherboard - Do a current test from VCC to each of the CS#, HOLD#, WP#, SCLK, SI, and SO pins - Connect the programmer without connecting the programmers VCC - Program the chip Regards, Graeme -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
