Raspberry Pi Forums

svrsig

if you monitor `dmesg -w` on the host that is running rpiboot, and also flip on BOOT_UART=1 in bootconf.txt, and use a BOOT_ORDER that includes rpiboot, then you can get a lot of debug as it boots up 1. The host is Windows 7 and I do not know how to 'monitor dmesg -w' 2. Where is bootconf.txt - the...

svrsig

frankdrn wrote: ↑
Sat Jan 16, 2021 8:14 pm
If you've got another Pi besides the CM4 you could try out the linux instructions using the other Pi - they've worked smoothly for me.

I use RISC OS on my other Pis so it would mean learning Linux first, but I'll give it a try if the Windows 7 link is known to be problematic.

svrsig

I am having troublke flashing the eMMC on my CM4 iGB / no wireless / 32GB eMMC. The rpiboot.exe says running server then server done but no mass storage device appears so I cannot flash it (using Win32DI). Then sometimes it says wrong length (0 or -1 vice 4) so out of about 20 or 30 tries it appears...

svrsig

Pimoroni have the CM4 IO board and the 1GB / no wirless / Lite and the 1GB / no wireless / 32GB eMMC variants in stock now for next day dispatch.

svrsig

Thanks Stuart. It looks like the problem may be related to the absence of a LiPo boost converter on the board. You agree? Quite possibly in this situation, but as W. H. Heydt also posted above, even with that fixed you need to look at your actual power usage for your application. The calculation us...

svrsig

Pimoroni is still showing a November delivery for new orders. I ordered on 3 Nov so am hopeful of receiving my order later this week. Well they sent me a CM4 board but no IO board. Fat lot of use that is!! Have tried to contact them but they pick up the phone and just drop it again. They also do no...

svrsig

I ordered at Berrybase in Germany. But they already sold out. It sold out in a matter of a few hours I guess. I got a notification at 15:00 today from Berrybase in Germany that they had 30-odd boards in stock, and when I finally was at home around 18:00, they were already sold out. Depending on the...

svrsig

I was encountering some difficulty on the Pi 400 with the identical SD card image that I was using successfully on the Pi 4. The presence of the device tree blob was causing RISC OS to fail to load on the Pi 400 but did not affect it on the Pi4. Adding device_tree= to the RISC OS bit of config.txt r...

svrsig

I have worked out how to do this. In CONFIG.TXT on the RISC OS SD card: [gpio5=1] kernel=riscos.img device_tree= [all] and in CMDLINE.TXT use that from the Raspian distro, which specifies a UUID for the Linux partition. Download the Raspian distro and flash it to a USB pen drive. Amend the CMDLINE.T...

svrsig

Thanks for the reply, I'll watch this space. Meanwhile I'll try [pi400] and [400] to see if they work.

svrsig

Is there a conditional filter for config.txt that is specific to the Pi 400? The filter [pi4] will take effect on pi 4 and pi400 but I want to discriminate in config.txt. Can this be done please?

svrsig

I have prepared an SD card image that will (on a Pi Zero) boot into RISC OS or Linux, depending whether a switch between pins 29 (GPIO5) and 30 (GND) on the header is open or closed. I have done this by using the following lines in CONFIG.TXT: kernel=riscos.img [gpio5=0] kernel=kernel.img [all] [pi4...

svrsig

Many thanks. I had not realised that conditional lines in config.txt were possible.

svrsig

At present, the firmware knows to load 'start.elf' or 'start4.elf' depending whether the machine is a Pi model 4 or not. Both of these look for a file 'config.txt' to load the kernel. Can I manually edit the text 'config.txt' in 'start4.elf' to 'conf44.txt' (i.e. keeping the same string length) so t...

svrsig

Try setting an explicit monitor resolution in config.txt - most likely the GPU can't work out what you have connected to the HDMI socket and is outputting composite video.

svrsig

Startup now waits at this point until the Esc key is pressed...

If you have turned on IP, then this is the correct behaviour unless you add a USB/Internet dongle. If you turn off IP then it won't pause.

svrsig

Many thanks for the help. I have adjusted the config.txt to: # bootcode.bin commit id 4a66b501473024c143c8c34fb670e009b6a8b8ff # fixup.dat commit id 47bd0f0f46bc053d8e21655e3a69c4a73ae19b41 # start.elf commit id 47bd0f0f46bc053d8e21655e3a69c4a73ae19b41 fake_vsync_isr=1 framebuffer_swap=0 gpu_mem=48 ...

svrsig

The cpu speed appears to be stuck at 700MHz on RC14, even with Nov 2015 firmware and a 30-Dec-2015 RISC OS ROM image. What changes do I need to make please to config.txt to force the correct 1000MHz speed for the cpu please? Speed switching (SYS "Portable_Speed") is not implemented in the ...

svrsig

The new version of Risc OS for the Raspberry Pi is finally available on the download site for Risc OS

And on the Rapsberry Pi Foundation 'downloads' tab as of today. Changes are described here: http://www.svrsig.org/WhatsNew.htm

svrsig

some of the software included in the commercial NutPi bundle refuses to work on the Raspberry Pi 2.

I understand that this is being worked upon...

svrsig

That's very nice, but how about a version compatible with BerryBoot? Could it be done? What is different in Berryboot when compared to NOOBS (which will feature RISC OS for the model 2 quite soon)? The RISC OS Open download page still features the old RC12a image as per 23rd February 2015. RC14 is ...

svrsig

It's just not been packaged in a single place yet. Once it is NOOBS will, no doubt, follow. The RISC OS Raspberry Pi SD card image has been updated to RC14 see here: https://www.riscosopen.org/news/ which runs on all models (that is models A, A+, B, B+ and the model 2) and is available pre-flashed ...

svrsig

There's a RISC OS computer show on Saturday 21st February. Hopefully a new release, Pi 2 compatible, will be available then. The previous SD card image (called RC12a) which is a RISC OS only image can be made to work on the model 2 by downloading the latest Pi firmware from github and the latest dai...

svrsig

You are probably better posting on the ROOL forum as the question is principally about a dead Iyonix. The drive on the Iyonix is PATA, most adaptors are now SATA (and there my knowledge ends).

svrsig

Hi Thanks for the reply. How do you access the hard drive with riscos? Is it possible to send a app to the hard disk? If you have a Raspberry Pi with the RISC OS RC12a SD card image on the SD card then you will see that application directories (those that begin with a '!') are included inside the d...

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