Tobias let me know that he’s released hisÂ IDLEHLT16Â driver for these early OS/2 versions. Â If anyone has run them in an emulator, you’ll know they’ll easily soak up 100% of the CPU they are given. Â This process will call the HLT opcode found in later (well compared to the 80286!) processors allowing them to ‘sleep’.
Needless to say, for fans of the beleaguered 16-bit OS, this is a great thing to have!
If anyone wants to know why there isn’t one for OS/2 2.0 and above, it doesn’t need one, it can sleep fine on it’s own.