DOS ain't dead

A problem using raw mode switch from R86M to PM in dosemu (Developers)

posted by Japheth , Germany (South), 20.05.2020, 23:19

> Basically, the raw mode switch
> from Real 86 Mode to Protected Mode crashes in dosemu2.

Tool DPMI.EXE has cmdline option -r, which measures mode switching times, including raw mode switches (protected-mode -> real-mode -> protected-mode). It runs with DOSEMU2, no crash - although a bit slow.

However, some of my test cases written for HDPMI won't run with DOSEMU2. Generally, DOSEMU2 has problems if raw-mode switches are combined with real-mode callbacks.

---
MS-DOS forever!

Complete thread:

• A problem using raw mode switch from R86M to PM in dosemu - ecm, 20.05.2020, 20:08
  • A problem using raw mode switch from R86M to PM in dosemu - ecm, 20.05.2020, 21:08
  • A problem using raw mode switch from R86M to PM in dosemu - Japheth, 20.05.2020, 23:19
    • A problem using raw mode switch from R86M to PM in dosemu - ecm, 20.05.2020, 23:38