Hi Thanks for your answer Peter. > > As Peter mentioned LPC is used on this board. Would it be enough to > > use the flash chips (for programming and reading) to just disable > > one chip with the #init signal? > Yes, sure. Ok, this is good news. > > It seems as if only one of the chips gets the #init to low, the > > other one will stay in reset mode and will keep its I/O pins in Z > > state? > Yes, but the question is what, if anything, controls the second > INIT#. The patent suggests a timer circuit, but your measurements > show that perhaps the timer circuit is just not there on production > boards. I think that there may be a watchdog placed at the open DIL pins nearby the flash if DualBios where to be used. But since there is plenty of > One solution is of course to not connect the two INIT# to the pads on > the board, but to a separate switch circuit. I think that #init pin is connected to open pads for both flash chips. So it should be pretty easy (1 or 2 pullup/pulldown resistors and 1 switch/jumper). Which would be much easier than desoldering a PLCC32 flash chip. The only thing i am not sure about is how the pulldown of #init on the soldered flash is realized.
I am currently waiting for Beth/Jose to double check and for the delivery of two spare flash chips and a PLCC32 socket. ST -- linuxbios mailing list [EMAIL PROTECTED] http://www.linuxbios.org/mailman/listinfo/linuxbios
