DOS ain't dead

NetShow Player 2.0 for Windows 3.1 - there's multithreading? (Developers)

posted by segin  , Springfield, MO, USA, 12.08.2023, 09:55

Or at least, this appears to be the purpose of NSTHRD16.DLL.

There's a number of exported functions related to threading, like CREATHETHREAD(), GETCURRENTTHREAD() and GETCURRENTTHREADID() (which are identical to each other, opcodes and all), etc.

There's also exported versions of various Windows API functions that are implemented elsewhere, like CREATEFILE(), READFILE(), WRITEFILE(), etc. Most of these reimplementations are simple wrappers around the DOS interrupt vector API.

I'm trying to reverse engineer the threading code to determine how it performs it's magic, but while I'm doing that... does anyone here have any clue as to how it works? Or even how it might work? AFAIK, VMM only multitasks VMs, not individual Windows programs (which all share the root VM.)

Complete thread:

• NetShow Player 2.0 for Windows 3.1 - there's multithreading? - segin, 12.08.2023, 09:55
  • NetShow Player 2.0 for Windows 3.1 - there's multithreading? - bocke, 20.08.2023, 00:33