Getting a Desktop
The picture is in 2:4 resolution because it can afford the standard 50Hz refresh rate. It is
possible to have a much-nicer 2:2 resolution, but it needs to be interlaced in order to appear
properly (25Hz, erk!).
The display is set up with the mode definition files as expected, so it should be simple to load a new mode file in your startup - I'm just not too sure how the daughterboard video hardware would cope with SVGA in 16 million colours at the fastest refresh rate the ARM7500FE can spit out. :-)
The display is only 256 colours because, well, that is all I had space for on the Zip disc!
It is a screenshot rather than a video grab so you can see it better. Actually, the real excuse is I couldn't be bothered to faff around with the video cables and getting the digitiser going, 'cos it was enough swapping the Zip drive leads around all the time...
Okay, the picture, clockwise...
Wanna do this?
You'll need an Iomega Zip drive (the 100Mb parallel port type) and the Argo drivers. If you cannot lay your hands on these, give up now.
Next, you'll need a machine running RISC OS 3.6 or later. If you are advanced, you can download a copy of the RISC OS 3.7 ROMs (no, I'm not saying where from!) and pull the modules out by hand.
Next, some patience. What we are going to do is to softload the bits and pieces that RISC OS is missing to boot the desktop proper.
You'll need some sort of utility to 'fake' the mouse pointer. I knocked up something appalling, but later discovered 'keyrat' on Chris Sawer's site; I think the URL is http://www.sawer.uklinux.net/. The KeyRat module is much nicer.
What we need to do is rip the stuff we want from out donor machine (preferably RISC OS 3.7), and set it onto the zip disc to be softloaded prior to invoking the Desktop. Confused yet? :-)
*Filer_OpenDir Resources:$.Resourcesand then return to the Desktop (if you left it).
Wimpdirectory across too -
Toolsat the very least.
You now want to create an Obey file called "
Auto" which contains
| Set the resource paths Set Filer$Path IZipFS:$.Resources.Filer. Set ResFiler$Path IZipFS:$.Resources.ResFiler. Set DisplayManager$Path IZipFS:$.Resources.Display. Set Pinboard$Path IZipFS:$.Resources.Pinboard. Set Switcher$Path IZipFS:$.Resources.Switcher. Set TaskWinRes$Path IZipFS:$.Resources.TaskWindow. | Load the modules RMLoad IZipFS:$.Modules.FilerSWIs RMLoad IZipFS:$.Modules.Filer RMLoad IZipFS:$.Modules.ResourceFi RMLoad IZipFS:$.Modules.DragASpr RMLoad IZipFS:$.Modules.DisplayMan RMLoad IZipFS:$.Modules.TaskMan RMLoad IZipFS:$.Modules.Pinboard RMLoad IZipFS:$.Modules.TaskWindow | If you don't have KeyRat, comment out the next line RMLoad IZipFS:$.Modules.KeyRat | Load the usual WIMPy icons IconSprites IZipFS:$.Resources.Wimp.Sprites ToolSprites IZipFS:$.Resources.Wimp.Tools | Drop into the desktop Desktop -file IZipFS:$._DeskStart
Now create a Desktop (type &FEA) file called "
contains something like:
WimpMode 15 %Set Edit$Options f9 b8 l2 m2 h12 w12 Filer_Boot IZipFS:$.Apps.!Paint Filer_Boot IZipFS:$.Apps.!Draw Filer_Run IZipFS:$.Apps.!Edit Filer_Run IZipFS:$.Apps.!CloseUp Filer_Run IZipFS:$.Resources.!FreeMem Backdrop -tile IZipFS:$.willow21 Filer_OpenDir IZipFS:$
That is pretty much it. Try it out on your IBX-100.
There is a hell of a lot of room for experimentation. For a start, you'll be wanting some
applications to use. Create yourself an
Apps directory and put some stuff in it. I
would suggest Edit, Paint, and Draw.
Can't find them in ROM? Don't worry, just find yourself the RISC OS 3.5 versions. You might already have them - try looking in !Boot.RO350Hook.Apps.
Want a nicer set of templates for DisplayManager?
Try looking in !Boot.RO370Hook.Res.
There is, by standard, no sound in the IBX-100 so you can't load up the ARM7500 MP3 player and play MP3s off of the Zip disc. Sorry about that!
Once you've done this, you might be left with the distinct idea that using the thing as a serious desktop machine simply ain't gonna happen. Well, for a start you ain't a hacker if that's how you look at it. And secondly, any which way you cut it, you got yourself a box that runs RISC OS and you paid what for it? Twenty quid? Fifteen?