This is a disc image of Acorn's UNIX, RISC iX 1.2.1c. Prepared with the assistance of The Centre for Computing History.
With this it should be possible to install on various Archimedes and restore some of the R140/R260 machines that have corrupted installs or failed discs.
For more information read the Acorn Application Note 252 on the RISC iX 1.2 upgrade.
 A3xx/A3000 (maybe), A4xx, A4xx/1, A540, R140, R225, R260. Not A5000, A4, A4000, A3010, A3020, or Risc PC or later)
 This was the size the disc was imaged from, theoretically RISC iX 1.2.1c would fit in 100MB, but this installation method will no t fit in less than 270MB.
 Discs known to work; Quantum Prodrive 270S, Quantum Prodrive 700S, Seagate ST1980N.
dd if=/path/to/imagefile of=/dev/<scsidisc> bs=1M
Install the SCSI podule and disc into the Archimedes. The podule should go in the top right podule slot (when viewed from the rear of the machine).
Boot into RISC OS and issue the following commands.
*configure scsifsdiscs 1 *configure scsifsdrive 4
Reboot if necessary to get the RiscIx drive on the iconbar. Run !RiscIx, this makes sure the RiscIxFS module is loaded, which is needed for the following configuration.
*configure device sd0 *configure partition 0 *configure unit 0
You may need to reboot here also (or rmreinit the riscixfs module to pickup the changes to the config).
You should now be able to click on the RiscIx icon on the iconbar and have it boot into RISC iX.
Move loading RISCiXFS to the !Boot system.
If you have a boot sequence make sure loading of the RISCiXFS module (In !RISCiX.RISCIxFS) is loaded at the start of your boot sequence. E.g. with the universal boot, place it in !Boot.Choices.Boot.Predesk.
|Acorn R140 Operations Guide||7.4 MB PDF|
|Acorn R140 RISC iX User Guide||17.4 MB PDF|
|Acorn R140 RISC iX X.desktop Guide
NOTE: RISC iX 1.2 does not use IXI's X.desktop but instead has Motif (mwm) and twm.
|5.6 MB PDF|
|R260 R225 A540 Installation Guide||6.6 MB PDF|