Try using a better quality PSU which can deliver a steady 5v2A+jubdad wrote:Hi,
I'm brand new to the world of Pi and have hit a wall trying to load RISCOS onto my Pi3. I've tried burning the RC14 image to an SD card using PiBaker and dd but with the same result. I get the rainbow screen plus the rainbow icon which I understand normally indicates undervoltage but there's a healthy 5 volts on the GPIO connector.
I wonder if I'm wasting my time and the latest RISCOS release isn't compatible with the Pi3 but I bought the thing on the (mis?)understanding that it was compatible with Pi2 software.
Help and TIA.
The RPi3 is compatible with RPi2 software (OS and packages) but not with previous "firmware" which may have been fine on a RPi2.jubdad wrote:I wonder if I'm wasting my time and the latest RISCOS release isn't compatible with the Pi3 but I bought the thing on the (mis?)understanding that it was compatible with Pi2 software.
It boots in 32-bit ARMv7 compatibility mode. You need to set a magic option in config.txt to make it use 64-bit ARMv8 mode.josvisser wrote:What I am suspecting is that the new Pi3 Cortex-A53 CPU is 64-bit whereas the old (Pi2) Cortex-A7 is a 32-bit core. I am not sure what mode the Pi3 boots in.
In fact, with the standard RC14 image, there is no real problem...I guess the RiscOS image will be updated to address the problems?
Exact.Ah, I have to do the update on my Mac before I use the card.
You don't have to. If you wrote the RC14 image on the SD card, you have already a PiBoot FAT partition. You need to update some files with the latest version of the firmware. These files:And I copied the content of PiBoot to my SD card
This is the content of the downloaded image:dfeugey wrote:You don't have to. If you wrote the RC14 image on the SD card, you have already a PiBoot FAT partition. You need to update some files with the latest version of the firmware. These files:
Then you need to update the ROM image with the latest one for the Pi. This file:
If you don't have these files on the card at step 1, then you did not write the RC14 image file the right way.
To replace the files you say (which I tried yesterday) I have to open riscos-2015-02-17-RC14.img. I don't know a way to change the content of an IMG file without mounting it. When I mount it, it is the PiBoot disk you're talking about, the name tells me that it's the file to put on an SD card to start up. Replacing the RISCOS.IMG I couldn't do, the link: https://www.riscosopen.org/zipfiles/pla ... v.5.23.zip has no IMG file and renaming the riscos file to RISCOS.IMG, doesn't give me a working IMG file (I get an error if I try to open it). So maybe there has to be another place to download the RISCOS.IMG?RC12-14_changes.txt
Normal, since there is no hard disc on your configurationMissing the Hard disc icon in bottom left hand corner tho' all I can see is SD icon & Apps
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