DOS ain't dead - Bug in JEMM

Bug in JEMM (Developers)

posted by Japheth , Germany (South), 11.02.2023, 03:37

> > Here it is:
> > > > @DbgOutS <"launching Int 19h",10>,?RBTDBG > > mov ds:[bptable.pInt06], offset fastboot_1 > > mov eax,19h > > call Exec_Int > > fastboot_1: > >
> > It should be like this:
> > > > ... > > mov ds:[bptable.pInt19], offset fastboot_1 > > ...
> >
> > FASTBOOT did not work because of this.

How did you come to your conclusion? Does the modification work for you? At first glance the suggestion sounds plausible, but actually isn't correct - the current code does what it is supposed to do. I checked this with the debugger. Changing the value of bptable.pInt19 instead of bptable.pInt06 results in an exception 06 when Ctrl-Alt-Del is pressed ( see the comment in restorevecs; the _first_ bp has to be modified, and the first bp is bptable.pInt06 ).

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MS-DOS forever!

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Complete thread:

Bug in JEMM - CandyMan, 10.02.2023, 10:04
- Bug in JEMM - Japheth, 10.02.2023, 13:10
  - Bug in JEMM - Japheth, 11.02.2023, 03:37
    - Bug in JEMM - CandyMan, 15.02.2023, 17:38
      - Bug in JEMM - Japheth, 16.02.2023, 05:21
        Bug in JEMM - CandyMan, 16.02.2023, 12:07
        Bug in JEMM - CandyMan, 23.02.2023, 16:47
        Bug in JEMM - Japheth, 23.02.2023, 17:30