This is an emulator for the Oberon RISC machine. For more information, see: http://www.inf.ethz.ch/personal/wirth/ and http://projectoberon.com/.

Requirements: a C99 compiler (e.g. GCC, clang) and SDL2.

A suitable disk image can be downloaded from http://projectoberon.com/ (in S3RISCinstall.zip).

Usage: risc [options] disk-image.img

• --fullscreen Start the emulator in fullscreen mode.
• --size <width>x<height> Use a non-standard window size. This requires modified Display and Input modules, see the Oberon directory.
• --serial-fd <fd> Send serial I/O to file descriptor fd (input) and fd+1 (output). (You probably won't need this.)

The Oberon system assumes you have a US keyboard and a three button mouse. You can use the left alt key to emulate a middle click.

The following keys are available:

• Alt-F4 Quit the emulator.
• F11 or Shift-Command-F Toggle fullscreen mode.
• F12 Soft-reset the Oberon machine.

First start the PCLink1 task by middle-clicking on the PCLink1.Run command. Transfer files using the pcreceive.sh and pcsend.sh scripts.

Transfer and compile the Clipboard.Mod driver. This makes these commands available:

• Clipboard.Paste
• Clipboard.CopySelection
• Clipboard.CopyViewer

• The wireless network interface is not emulated.
• Proper documentation is needed.

Copyright © 2014 Peter De Wachter

Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.