Raspberry Pi 400

Rather obligingly the Mac’s DiskImageMounter app allows the FAT partition of ROOL’s RISC OS Pi img file to be edited, so the ROM and firmware in can be easily updated to produce an img that will run on the RPi400.

Are ROOL going to be pragmatic and do an updated 5.28 stable release ASAP that also works on the Pi400?

It would be much easier to do a 5.30 because of the Pi400.

It would be very strange to issue another 5.28 which is different to a previous 5.28 – version numbers are there to distinguish different things after all.

We’ve been there before with 5.24 vs. 5.26.

Are ROOL going to be pragmatic and do an updated 5.28 stable release ASAP that also works on the Pi400?

It would be much easier to do a 5.30 because of the Pi400.

I would go for pragmatic expediency. It is only the Pi ROM and is only three files in HAL_BCM2835.

I would go for pragmatic expediency. It is only the Pi ROM and is only three files in HAL_BCM2835.

So once it’s in the current development ROM, just use that – and test it at the same time!

You don’t need to keep upgrading if you’re happy!

You don’t need to keep upgrading if you’re happy

I think the question was more about how often the “upgrade to 5.29 beta” would need explaining to new users before the next stable ROM was issued.

how often the “upgrade to 5.29 beta” would need explaining to new users before the next stable ROM was issued.

I’m waiting for the revised BCM2835 ROM to appear on the Downloads page: once that happens I’ll be modifying the wiki pages to suit. While the Downloads page won’t mention the process, there will at least be something in the wiki.

I’ll be modifying the wiki pages to suit. While the Downloads page won’t mention the process, there will at least be something in the wiki

Good idea.

Just a thought – perhaps modifying the download info link to point to the correct procedure would be useful, until a compliant download on stable is available?

perhaps modifying the download info link to point to the correct procedure would be useful

Yes, that’s already on my to-do list. So far I’ve identified 7 wiki pages that need “Pi 400” updates.

Yes, that’s already on my to-do list. So far I’ve identified 7 wiki pages that need “Pi 400” updates.

“See you” next week, or two…

Hmm, search criteria?

Hmm, search criteria?

To begin with I’m concentrating on the wiki pages I wrote. The number of pages needing amendments – albeit minor – now stands at 9.

An OS5.29 ROM build for all Pi’s is here, it has Ben’s updates.

After booting RISC OS via USB and inserting an SD card always gives ‘this disc drive is empty’ . Also doesn’t show up in ‘*sdiodevices’. Maybe the SD card detection has changed.

Any experiences with the Compute Module 4 module and development board. I want to buy one because of the PCIe port

After booting RISC OS via USB and inserting an SD card always gives ‘this disc drive is empty’

I see that too. Would you be so kind as to try my earlier, 05Nov20, build.

Start with only the the FAT boot pen inserted then no SDIODevices are shown. Insert an SD card, get to the Desktop, click on the SD icon, the filer opens and an SDIODevice is reported.

Any experiences with the Compute Module 4 module and development board. I want to buy one because of the PCIe port

I don’t think it’s started shipping yet. Most UK sites say early November for the ‘lite’ version and mid November for the non-lite version.

I see that too. Would you be so kind as to try my earlier, 05Nov20, build.

That worked. SD card access is back to normal. I’m booting off a USB connected SSD.

Running stable so far at 2.35GHz.

Still running stable at 2.35GHz.

If anyone wants to try it, just add the following to config.txt. Highest temperature seen so far is about 48C.
As always use at your own risk.

[pi4]
enable_gic=1
arm_freq=2350
over_voltage=8

As an added bonus holding down fn-f10 for 10seconds powers off the 400 under RISC OS. Pressing again immediately powers on.

That worked.

Thanks for that. My download now has the 05Nov20 ROM.

An OS5.29 ROM build for all Pi’s is here, it has Ben’s updates

Given the above 7th Nov ROM had Ben’s updates in and caused an issue that is not seen in the 5th Nov one then does that need to be feedback to the 497 Bugs ticket?

If the 5Nov rom is the one I uploaded, then it works on the Pi 400 but not the Pi4. I simply made it recognise a Pi 400 as a Pi 4 and the Pi 4 as unknown rather than vice versa. Just as a horrible quick fudge by changing a single character in the source (17 to 19) – I also corrected the Help2 moduledb item, which latter is now merged.

If the 5Nov rom is the one I uploaded, then it works on the Pi 400 but not the Pi4. I simply made it recognise a Pi 400 as a Pi 4 and the Pi 4 as unknown rather than vice versa.

We must not muddle up the various builds. The 05Nov20 build on my site is my build and is good for both the RPi4 and RPi400, but not the CM4.

Given the above 7th Nov ROM had Ben’s updates in and caused an issue that is not seen in the 5th Nov one then does that need to be feedback to the 497 Bugs ticket?

I have been trying to find the substantive difference between my source and the merge request but so far to no avail. I may dig further, but will add to the ticket. It would be more helpful to post a resolution, but ….

Can someone please give a comment about the keyboard quality of the Pi400 (feeling for typing)?
Is the keyboard ok, or is it as bad as the one from PiTop?

Is the keyboard ok, or is it as bad as the one from PiTop?

Comments from owners here will be forthcoming but the first post on this thread links to a YouTube video of"teardown" in which the guy checks the “feel” of the keyboard.

So, a combination of RO users and a guy who spends part of his time pulling kit apart and doing critical reviews.

Can someone please give a comment about the keyboard quality of the Pi400 (feeling for typing)?

It’s the kind of keyboard you’d expect to see on a laptop. More key travel than on a 2017 MacBook¹ but won’t be your first choice if you want to do a lot of typing.

¹ Pretty much every mechanical keyboard ever made has more key travel than a 2017 MacBook…

Can someone please give a comment about the keyboard quality of the Pi400 (feeling for typing)?

I find the keyboard to be really rather pleasant. it’s certainly not ‘rubbish’.