AndyG
Ok, with your last file I'm able to see some differences:
- Startup (as before) green with black blinking cursor
- Entering SYS 59650,5 now gives me a screen with many horizontal lines (that DIDN'T work with the old version of the HR40-editor ROM I found)
- I'm now able to see M9000 9040 when entering SYS 59650,5 (there are FF's and sometimes 00's, before there were 9F's everywhere!
But I can't change values, I always get the question mark behind the changed value when I try that.
That's all. No more changes at all.
Here are a few pictures:
SYS 59650,5 now changes the green screen to something readable:
And I can see the RAM- here without SYS 59650,5:
And here after switching the board on with SYS 59650,5:
Entering POKE35000,4 (so that everything is readable) brings back the 9F... that's why I had to enter it blind after the other things.
All connections seem to be fine... I think, now there is a point I cannot continue except waiting for the RAM.
But why is there a green startup screen?