Delete me: Raspberry Pi 4 port status (Rev #46, changes)
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category: RaspberryPi
Overview
Work on porting RISC OS to the Raspberry Pi 4 is still ongoing. While most components are available, there are still some items outstanding.
For users that wish to assist in the testing, a development ROM image – the Beta RPi ROM – is available from the Downloads page.
Current status
Components that work
| Date | Details |
|---|---|
| 03 Sep 2019 | UART0 fixed: access to the command line via the serial port now works. |
| 13 Sep 2019 | Add GICv2 interrupt controller support. |
| 16 Feb 2020 | Audio output now works. |
| 18 Feb 2020 | USB devices now visible via USB-C (power input) port. |
| 03 May 2020 | Ethernet port now works. |
| 29 Jul 2020 | Firmware for VL805 USB controller loaded on 8GB models |
| 12 Sep 2020 | All USB ports operational: USB1.1 and USB2 devices can be used. |
Major components needing attention
| Item | Comments |
|---|---|
| USB3 ports | The Pi 4 has a USB3 controller, which RISC OS does not yet support. |
Other restrictions
- The second HDMI port cannot be used at present.
- For the model fitted with 8GB RAM, only 4GB is available to RISC OS.
- RISC OS (more generally) does not support USB3 yet, so the USB ports operate in USB1.1 or USB2 mode as applicable.
How to get RISC OS running on the Pi 4
Software information: Raspberry Pi: Firmware has details of the firmware required for the Raspberry Pi 4, along with details of the changes needed to config.txt.
If you are starting from scratch, one way of constructing a boot SD is given at Installing RISC OS on the Raspberry Pi 4?.
Further information
- ROOL announcement (02 July 2019)
- Discussion thread in the General forum
- Discussion thread in the Porting RISC OS forum
For more general information, see Using RISC OS on the Raspberry Pi.
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Buy RISC OS Open merchandise here, including SD cards for Raspberry Pi and more.