DOS ain't dead

User exception handler in C (Developers)

posted by Guti , 27.07.2020, 08:22

> Hi, is it possible/how to install user exception handler in user program in
> DJGPP (DOS) and MinGW (Windows) to catch CPU exception before OS/program
> will crash? Does DJGPP have it's own hander or is it catched by DPMI server
> or other memory manager in v86 mode like JEMM? Is it possible to resume
> from exception and continue normally? Eg. in case of RDMSR of nonexisting
> MSR exception is generated and it leads to crash or BSOD in Windows. There
> was some discussion about CPU-Z in Win9x that from VXD the exception cannot
> be catched and Windows will BSOD...

You can use com0com0 to map a real Windows port to a virtual DOS one. Indeed I use it for debugging my DOS Watcom applications under Windows 10.

https://www.javiergutierrezchamorro.com/depurar-aplicaciones-dos-con-watcom-c-y-openwatcom-c/

---
Visit my personal blog at https://www.javiergutierrezchamorro.com

Complete thread:

• User exception handler in C - RayeR, 24.07.2020, 13:15 (Developers)
  • User exception handler in C - Japheth, 24.07.2020, 18:07
  • User exception handler in C - Rugxulo, 24.07.2020, 18:39
  • User exception handler in C - tkchia, 24.07.2020, 20:47
    • User exception handler in C - RayeR, 30.07.2020, 13:18
      • User exception handler in C - tom, 30.07.2020, 23:54
        • User exception handler in C - RayeR, 01.08.2020, 02:13
          • User exception handler in C - Laaca, 16.08.2020, 21:27
            • User exception handler in C - Laaca, 16.08.2020, 22:38
              • User exception handler in C - Rugxulo, 17.08.2020, 22:35
                • User exception handler in C - marcov, 18.08.2020, 12:23
                  • User exception handler in C - Laaca, 18.08.2020, 20:15
                    • User exception handler in C - Rugxulo, 19.08.2020, 19:44
                      • User exception handler in C - Laaca, 19.08.2020, 21:50
                        • User exception handler in C - Rugxulo, 23.08.2020, 17:32
                          • User exception handler in C - Japheth, 23.08.2020, 20:36
            • User exception handler in C - Rugxulo, 17.08.2020, 22:26
            • User exception handler in C - tkchia, 19.08.2020, 18:52
              • User exception handler in C - marcov, 20.08.2020, 00:00
                • User exception handler in C - Laaca, 20.08.2020, 15:31
      • User exception handler in C - tkchia, 31.07.2020, 19:36
        • User exception handler in C - RayeR, 01.08.2020, 02:16
  • User exception handler in C - Guti, 27.07.2020, 08:22