ThorstenBr
commented
4 hours ago The splash screen should not become visible when the Apple II boots normally. It should display the Apple II prompt immediately.
The splash screen remains visible, at least for a few seconds, when no normal Apple II boot sequence is detected - to help with diagnosing the issue.
While the splash screen/diagnostics are visible:
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You should see "BUS CYCLES" counting (1 million cycles per second). If that is not the case, then you have a hardware issue with the Phi0 connection. The PICO is unable to see the rising/falling edge of Phi0.
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You should also see the current value of the address bus (updated several times per second). In your photo it shows "FFFF", which is concerning. Might be an issue with the address bus connection - or just a result of the PICO not detecting any bus cycle (due to an issue with Phi0), so the address bus isn't even read/updated.
In any case looks like a hardware issue with the slot/bus connection. Or an issue with your bus transceivers, which make the connection between the PICO and the 6502 bus.
StormTrooper
I've just build one of these any using the latest firmware 1.6
On first bootup there was no splash screen and it booted straight into the Apple ][ prompt.
And the next bootup though, and now seems to happen 50% of the time I get booted into the splash screen (Which is perfect) and after a few seconds I get a screen full of corrupted characters.
Any idea what is causing this?
Running on a Apple IIe with the original RBP Pico. Apple IIe passes all diagnostics, no memory issues. I have been using it with a different RBP Pico VGA adapter without issues.
Are there any other details I can provide which can help solve this?