Delete me: Raspberry Pi 4 port status (Rev #40)

Overview

Work on porting RISC OS to the Raspberry Pi 4 is still ongoing. Some components are not available, so this build is not yet suitable for new users.

For users that wish to assist in the testing, a development ROM image is available from the Downloads page – be sure to choose the one marked “Beta RPi ROM”.

Current status

Components that work

Major components needing attention

How to get RISC OS running on the Pi 4

See Software information: Raspberry Pi: Firmware for the firmware required for the Raspberry Pi 4, along with details of the changes needed to config.txt.

The non-availability of the USB ports is a limiting factor. To use RISC OS on the Raspberry Pi 4, you have three options:

• Option 1: Back-power the Pi 4 with a hub connected to the USB-C port.
  • If you have board revision 1.2 of the Pi 4, a USB hub with Power Delivery may work.
  • If you have board revision 1.1, Power Delivery will not work. Note that relatively few hubs will back-power in the absence of Power Delivery – check the forum for suggestions.
• Option 2: Supply power to the GPIO pins, e.g. by means of a “power input” HAT. This allows an “ordinary” USB hub to be connected to the USB-C port.
• Option 3: Connect using VNC (either via the Ethernet port or by means of the WiFi HAT for the Raspberry Pi) – as no USB devices are needed, a standard power supply can be connected to the USB-C port. You will have to set up the VNC software on another Raspberry Pi before transferring the SD card to the 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.