newRPL - build 1255 released! [updated to 1299]

[Claudio L.]

(06-20-2019 12:49 PM)Nigel (UK) Wrote:  

(06-20-2019 10:29 AM)JoJo1973 Wrote:  Well, I wouldn't mind to see the bug solved. It'd be nice to have a backup unit ready, since the HP49G+ can't draw power from the USB port.

I could provide a dump of the bootloader, maybe it could be used to infer where the bug is.

I'm afraid that I have no idea of how to go about this. Claudio tried when the bug was first noticed but wasn't able to get anywhere; unless there is someone somewhere who actually knows what peculiarity in the HP-49g+ causes the problem it clearly isn't easy to find.

Nigel (UK)

It's really hard without a unit that fails. I had basically read the status of all pins on a 50g (years ago) and setup newRPL to put the pins in the same state. There's something different in the 49g+ but I can't see what it is since my 49g+ died years ago (first broken plastic ring, then 5 different keys broke, then I took it apart to attempt a fix and died at the operating table).
If I have time this weekend (big if) I'll try to use x49gp with the stock ROM simulating a 49g+ to see if there's any difference in the pins configuration with the 50g and newRPL. Still, I don't promise any positive results, this is hard and I tried before... and failed.