DOS ain't dead

keyboard problem in details (Announce)

posted by Japheth , Germany (South), 09.01.2008, 20:29

> Hmm, sounds to me like it's really a bug of any DOS TSR that relies on
> this rather precarious assumption, especially if it enables interrupts
> before calling the old handler. Either way, multiple accesses to ports
> that have "side-effects" like this is always asking for trouble.

You can define it as bugs in DOS TSRs, but these TSRs are unlikely to be adjusted. Also, it was and still IS stable to do such hooks in real machines. (Of course, enabling interrupts BEFORE calling the old handler would be a bug, but nobody was talking about that).

btw., it's not just TSRs which hook IRQ 1. MS Scandisk does as well, for example.

---
MS-DOS forever!

Complete thread:

• Qemu 0.9.1 is out ... - Japheth, 08.01.2008, 08:53 (Announce)
  • Qemu 0.9.1 is out ... :-( - DOS386, 09.01.2008, 01:12
    • Qemu 0.9.1 is out ... :-( - sol, 09.01.2008, 01:30
      • Qemu 0.9.1 is out ... :-( - DOS386, 09.01.2008, 01:51
        • Qemu 0.9.1 is out ... :-( - sol, 09.01.2008, 02:55
      • keyboard problem in details - Japheth, 09.01.2008, 09:38
        • keyboard problem in details - jaybur, 09.01.2008, 13:13
          • keyboard problem in details - Japheth, 09.01.2008, 20:29
        • keyboard problem in details - sol, 09.01.2008, 17:15
  • Qemu 0.9.1 (Win32 binary download) - Rugxulo, 15.01.2008, 23:29
  • Qemu 0.9.1 is out ... - rr, 20.01.2008, 22:50
    • Qemu 0.9.1 is out ... - Japheth, 21.01.2008, 02:29