This afternoon I picked up a complete OSI Challenger 4P (model C4PMF) with 5.25" disk driveand a stack of manuals. It's in decent shape and I've been going over it and cleaning it up (with a little wood polish for the sides :)). Power supplies seem to be working nominally so I've fired it up, and it appears to be working correctly. It came with half a dozen floppies, but they're in pretty sorry shape and only one of them actually boots (well, almost boots - it errors out after a little while into the boot process). I've of course cleaned the drive's heads beforehand :). The C4PMF does not have a cassette interface (alas) so I can't load cassette software on this thing. And no BASIC in ROM, so if I want to bootstrap this thing over a serial port I'll be entering in machine code to do it :). So I have two immediate questions: 1) Is there an archive anywhere of disk images for this machine? I've done a fair amount of searching and I haven't found much outside of a few OS images included with emulators. 2) Anyone have any experience getting software onto the machine from a "modern" PC? Can floppies for the C4P be written on a PC (using ImageDisk or the like)? Thanks for any advice. This looks like a really cool machine, and I can't wait to get it running. - Josh