I would move on to swapping RAM and decoder chips. As I said before, the decoder chip in my 102 failed last year some time; kept one of the RAM chips from ever being enabled.
On Thu, May 10, 2018, 12:43 AM Fugu ME100 <[email protected]> wrote: > Does it only execute the loop once and get stuck for the first time at > 2574H? > > The 49H in the data dump is most likely the C9H for the RET. The next two > byte are the return address from the stack. They could be 0A57H, 0AD7H, > 8A57, 8AD7H or other permutations. As this routine is writing to the RAM > it is quite possible it is trashing the stack and destroying the return > address - could be a bad RAM chip or decoder. > > There are at least two different versions of the M100 motherboard one has > 700mil RAM modules and the other 750mil. Not sure if there are any ROM > differences or other hardware differences. >
