So i'll go back to the 6502:

As i mentioned, RES & NMI are ok (both Orics) so what i should measure now? The A lines? Out?
It's bad, that i never worked with an LA before ... i have to get into it. So I'll do two measures ... 40 & 39 and A0-A6. Don't know what you mean ... "trigger on rising edge" ... i know what it is in german, but it is nearly my first time with an LA software.iss wrote:So, obviously the cpu generates F2 which is good.
Now you can attach chan0 to RESET - pin 40 and set it as trigger on rising edge,
chan1 to F2 - pin 39, and chan1..chan7 to address lines A0..A6.
Important is what happens after RESET goes to '1' i.e. just after you power-on.
There must be some menu or config item called "Trigger" with different options. What iss means is that the capture starts when the signal goes from low to high (in the "edge").YuT666 wrote: So I'll do two measures ... 40 & 39 and A0-A6. Don't know what you mean ... "trigger on rising edge" ... i know what it is in german, but it is nearly my first time with an LA software.
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F88F A2 FF LDX #$FF
F891 9A TXS ; Set stack pointer to #FF.
F892 58 CLI ; Disable interrupts
F893 D8 CLD ; Clear decimal mode.
F894 A2 12 LDX #$12 ; Copy the above jump table into
F896 BD 7C F8 LDA $F87C,X ; page 2 of memory.
The 6502 can die, one of my Oric have a dead onecarlsson wrote:Good luck! I thought the 6502 was one of the more robust chips in old computers. It tends to be RAM, ROM, VIA and all sorts of other chips that break down before the CPU does (in particular in two different computers) but one never knows before you have tested and tried to replace it.