Radnor Help

Keyboard Commands

ALT-ENTER Toggle fullscreen mode
CTRL-F5 Save a screenshot
CTRL-F6 Start/stop recording sound output to a .wav file
CTRL-F7 Decrease frameskip
CTRL-F8 Increase frameskip
CTRL-F9 Kill DOSBox
CTRL-F10 Capture/release the mouse
CTRL-F11 Slow down emulation (decrease DOSBox cycles)
CTRL-F12 Speed up emulation (increase DOSBox cycles)

Radnor Frequently Asked Questions

What is Radnor?

Radnor is a Graphical User Interface (GUI) frontend for the open-source DOSBox Disk Operating System emulator.

How does Radnor work?

Radnor by itself is just a Cocoa interface for launching the DOSBox emulator. DOSBox is typically run from the command line with a variety of options. Radnor simplifies and facilitates launching DOSBox. As for the emulator itself, the DOSBox developers have generously provided a FAQ of their own.

How do I run my favorite old DOS game?

Once you have opened the Radnor application, you can either drag the DOS executable file on to the window or press the "Select" button to choose it via a navigation dialog. You should then be able to press the "Run" button to launch DOSBox and play your game. You can also add games to the list of presets by pressing the "+" button.

What do the options do?

The options should be fairly self-explanatory. Run mode can be set to either "Fullscreen" or "Windowed", depending on whether you want to run DOSBox in fullscreen mode or in a window, with the rest of the Mac OS X interface visible. As for machine type, the "auto" option should suffice for most users -- the others are for compatibility with games that require specific hardware emulation. There are some options that cannot be set by Radnor -- for these you have to use the keyboard commands listed at the top of this document.

Why Radnor and what's with the evil, sinister-looking guy?

Radnor was the Harkonnen Mentat in the classic real-time strategy game "Dune 2", an old DOS favorite of mine. He's the evil, sinister-looking guy. I borrowed the graphics without permission from Westwood.

My game runs very slowly

In my experience, DOSBox is an inefficient and slow emulator. According to the DOSBox developers, a high-end computer will run DOSBox at the speed of a low-end 486 compatible. Of course, this all depends on your definition of "high-end". I've been able to run most of my favorite DOS games quite comfortably on a 1.25Ghz PowerBook G4. You can always try to increase the clock speed and frame drops using the keyboard shortcuts listed above.

How do I support Radnor development?

Radnor is free, open-source software and is released under the terms and conditions of the GNU General Public License. That being said, if you find Radnor useful I ask you to please consider submitting a donation so that I can expend more time improving it and fixing bugs. Code submissions are also very welcome.

How do I update the DOSBox binary that Radnor launched?

I'll try to update Radnor with the latest DOSBox binary as often as possible, but my time and resources are limited. If you want to update the DOSBox binary yourself you'll need to download the latest version from the DOSBox Project Website and replace the Radnor.app/Contents/Resources/dosbox binary.

How do I get the Radnor source code?

Visit the Radnor website. The source code is freely available and is distributed under the terms and conditions of the GNU General Public License.