Delete me: Software information: RaspberryPi: Bcm2835 Rc14 (Rev #1)

The download link provides the beta ROM image (a file ‘riscos’) that is provided in the Release Candidate 14 (RC14) SD card image for the Raspberry Pi computer to run RISC OS available now from ROOL on the RISCOSPi SD card.

RC14 (the SD card image) itself (download link to Raspberry Pi foundation web site) contains all the elements required to run RISC OS, including the firmware to initialise the Raspberry Pi as well as the HardDisc4 boot files, in an SD card image which can be written to a blank SD card.

Once written to the SD card all you have to do is turn on the Raspberry Pi and it will start up in RISC OS with a lot of preloaded software. The rom image is held inside $.!Boot.Loader where you will see the other firmware files as well:

Directory of SDFS::RISCOSpi.$.!Boot.Loader
.BOOTCODE/BIN     WR/     DOS       17:25:24 02-Feb-2015   17 kbytes
.CONFIG/TXT       WR/     Text      00:42:18 23-Feb-2015  96  bytes
.FIXUP/DAT        WR/     DOS       17:04:26 18-Feb-2015    6 kbytes
.LICENCE/BROADCOM WR/     DOS       13:47:06 10-May-2012 1447  bytes
.RISCOS/IMG       WR/     DOS       00:00:00 01-Jan-1980    5 Mbytes
.START/ELF        WR/     DOS       17:04:26 18-Feb-2015 2582 kbytes

The RISC OS ROM image will be written to each time you shut down (by the SDCMOS module, this makes sure any ‘CMOS’ settings are kept up to date) hence updating the datestamp of the ‘RISCOS/IMG’ file.

These files appear to the Raspberry Pi as the only files in the FAT partition on the SD card as it starts up.

Within RISC OS you will see a complete hard disc of files which means that you can start right away:

When it first starts up you will be shown the Welcome Guide which explains things such as how to download more RISC OS software using either the !Store or the !PackMan utility. Each of these shows you a list of RISC OS software, with a detailed explanation of what each bit of software does and lets you choose which items to download.