My IIe needs some help. It was put away for quite some time but I wanted to do somthing now. Now it does not start up reliable. One time it starts up normally, the second time the startup beep is played noticeably slower and what looks like output from the machine language monitor is displayed right under the "Apple II" startup banner. The third time it does not start at all. When it does not start at all the 6502s reset pin is at 0V so the CPU does not came out of reset. Also when seemingly started normally it does not take long than the picture is flickering and fading away. Ctrl+Apple+Reset does not work when this happens. I tried without any expansion card but it does not change the problems. I have an A2DVI in the system. When the IIe shows the problems I get an A2DVI debug screen which reads either "no 6502 bus activity" or "waiting for Apple II ROM reset routine".
I checked my IIe enhanced replacement ROMs, they are okay. Also I swapped the 65C02 for an regular 6502. No change.
I don´t know much about the reset circuits on an Apple II, but could be the 558 time and/or the two crystals be the problem?
I checked my IIe enhanced replacement ROMs, they are okay. Also I swapped the 65C02 for an regular 6502. No change.
I don´t know much about the reset circuits on an Apple II, but could be the 558 time and/or the two crystals be the problem?
