DOS ain't dead

DOSBox-X 0.84.2 / 2022.08.0 released! (Announce)

posted by ecm  , Düsseldorf, Germany, 10.01.2023, 22:03

> > This is 32-bit real mode and the only restriction is that you
> > cannot run any procedure above an address greater than 64K.
>
> If the address must be less than 64k it sounds like you're only using 16
> bits instead of 32?

Think they meant CS has its D bit clear and EIP is not used, only IP. The "procedure" refers to code segment contents. So the data segments have higher limits but the CS cannot be used to access a code section larger than 64 KiB.

Side note: It appears both dosemu2 and qemu will not check segment limits in their interpreter or JIT modes (that is, no native DPMI, no KVM, no V86M).

---
l

Complete thread:

• DOSBox-X 0.84.2 / 2022.08.0 released! - Wengier, 02.08.2022, 01:50 (Announce)
  • DOSBox-X 0.84.2 / 2022.08.0 released! - Japheth, 03.08.2022, 17:31
    • DOSBox-X 0.84.2 / 2022.08.0 released! - Wengier, 03.08.2022, 23:19
      • DOSBox-X 0.84.2 / 2022.08.0 released! - Japheth, 04.08.2022, 07:25
        • DOSBox-X 0.84.2 / 2022.08.0 released! - Wengier, 04.08.2022, 08:20
          • DOSBox-X 0.84.2 / 2022.08.0 released! - Japheth, 04.08.2022, 11:21
            • DOSBox-X 0.84.2 / 2022.08.0 released! - Wengier, 24.08.2022, 06:01
              • DOSBox-X 0.84.2 / 2022.08.0 released! - Japheth, 26.08.2022, 17:32
                • DOSBox-X 0.84.2 / 2022.08.0 released! - Wengier, 27.08.2022, 06:24
                  • DOSBox-X 0.84.2 / 2022.08.0 released! - Japheth, 27.08.2022, 06:48
                    • DOSBox-X 0.84.2 / 2022.08.0 released! - Wengier, 27.08.2022, 16:35
              • DOSBox-X 0.84.2 / 2022.08.0 released! - Japheth, 28.08.2022, 03:49
  • DOSBox-X 0.84.2 / 2022.08.0 released! - KormaX, 10.08.2022, 17:01
    • DOSBox-X 0.84.2 / 2022.08.0 released! - Wengier, 11.08.2022, 22:08
      • DOSBox-X 0.84.2 / 2022.08.0 released! - KormaX, 11.08.2022, 23:22
        • DOSBox-X 0.84.2 / 2022.08.0 released! - Wengier, 21.08.2022, 01:43
  • DOSBox-X 0.84.2 / 2022.08.0 released! - glennmcc, 30.12.2022, 07:01
    • DOSBox-X 0.84.2 / 2022.08.0 released! - glennmcc, 30.12.2022, 07:49
  • DOSBox-X 0.84.2 / 2022.08.0 released! - CandyMan, 09.01.2023, 13:00
    • DOSBox-X 0.84.2 / 2022.08.0 released! - Japheth, 09.01.2023, 16:38
      • DOSBox-X 0.84.2 / 2022.08.0 released! - CandyMan, 09.01.2023, 19:05
        • DOSBox-X 0.84.2 / 2022.08.0 released! - Japheth, 10.01.2023, 09:26
    • DOSBox-X 0.84.2 / 2022.08.0 released! - bretjohn, 10.01.2023, 18:09
      • DOSBox-X 0.84.2 / 2022.08.0 released! - ecm, 10.01.2023, 22:03
      • DOSBox-X 0.84.2 / 2022.08.0 released! - Japheth, 11.01.2023, 16:48
        • DOSBox-X 0.84.2 / 2022.08.0 released! - tkchia, 11.01.2023, 21:53
          • DOSBox-X 0.84.2 / 2022.08.0 released! - Japheth, 13.01.2023, 13:30
            • DOSBox-X 0.84.2 / 2022.08.0 released! - tom, 13.01.2023, 15:07
  • DOSBox-X 0.84.2 / 2022.08.0 released! - CandyMan, 24.02.2023, 12:50