I've started this conversion a very long time ago. Also built in a SIMM memory expansion and then my 8280 did not boot. (I only heard the cassette relay click and that was it.) I've taken out the simm expansion already, managed to find some 64K x 4 memory bank chips to restore that to original but I would like to keep the v9958 inthere.
Has anyone on the forum here done the V9958 swap? I used the hans otten schedule back then but I see I have also cut two resistors (R166 and R167) which normally provide 5V to the VDP pin 26 and 27 but I can't see that in any description. Is this nescessary?
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