With a PC of that vintage I would suggest installing the Standalone Native Oberon as an initial experiment.
http://www.oberon.ethz.ch/downloads/indexThe install.txt file says:
The system runs on the bare PC in 32-bit mode, and does not use the 16-bit drivers in the PC BIOS, or drivers from other operating
systems.
The *minimum* hardware requirements are:
Processor: 80386, Pentium or compatible
Bus: ISA, EISA or PCI
Memory: 4Mb
Disk space: 3Mb
Disk controller: IDE, EIDE (ATA), ESDI, Adaptec AIC 7xxx (beta),
Adaptec 1520 or NCR 810 SCSI
Display controller: VGA (SVGA recommended)
Diskette: Drive supporting 720k/1.44Mb media
Mouse: PS/2 or serial mouse (3-button recommended)
Keyboard: US, UK, Swiss German, German, Canadian, Norwegian,
Turkish, Polish, French or Dvorak
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* Martin Reiser's books are a good introduction to programming the Oberon system in Oberon. You can download a copy of one of them: 'The Oberon System' from:
http://www-old.oberon.ethz.ch/books.html----
* If you have got another system with Windows XP or later on it, check out our system, 'Astrobe':
http://www.astrobe.comIt is an Oberon-07 cross compiler and Integrated Development Environment for NXP LPC2000-based ARM7 microcontrollers.