Today I have fitted a BeebMaster Econet kit to my Issue 4 BBC B.
I have KenLowe's econet bridge sitting on his hub, with a Pi3B. I have installed the bridge software as per the instructions and the software seems to be running correctly. There is a nice blue light on the bridge.
The Beeb recognises the clock, and displays the station number. But the good news ends there.
*I AM SYST returns (after a few seconds) a Line Jammed error. I don't really know where to start diagnosing this.
With my scope I can see that when the Beeb is connected to the bridge the D+ and D- lines are permanently high. Even if the Beeb is turned off. If the Beeb is not connected to the bridge then the D+ and D- lines are permanently low.
I have also tried a different Pi and different Pi PSU.
So probably I made an erse of fitting the upgrade kit, but is there a recognised procedure for hunting down the issue? There are a lot of solder connections to poke at.
The Beeb also has one of Marks 177x boards in, which is functioning fine.
I have KenLowe's econet bridge sitting on his hub, with a Pi3B. I have installed the bridge software as per the instructions and the software seems to be running correctly. There is a nice blue light on the bridge.
The Beeb recognises the clock, and displays the station number. But the good news ends there.
*I AM SYST returns (after a few seconds) a Line Jammed error. I don't really know where to start diagnosing this.
With my scope I can see that when the Beeb is connected to the bridge the D+ and D- lines are permanently high. Even if the Beeb is turned off. If the Beeb is not connected to the bridge then the D+ and D- lines are permanently low.
I have also tried a different Pi and different Pi PSU.
So probably I made an erse of fitting the upgrade kit, but is there a recognised procedure for hunting down the issue? There are a lot of solder connections to poke at.
The Beeb also has one of Marks 177x boards in, which is functioning fine.
Statistics: Posted by thecellartroll — Sun May 05, 2024 12:42 am