New answers tagged ms-dos
11
votes
In 16-bit MS-DOS, how do I get a file handle to the currently running .exe?
If definitive references is what you’re looking for, the usual one to consult is the RBIL:
Format of Program Segment Prefix (PSP):
Offset Size Description (Table 01378)
[…]
2Ch WORD ...
- 17.2k
15
votes
Accepted
In 16-bit MS-DOS, how do I get a file handle to the currently running .exe?
[Edit: Ooops, that question already been answered a few years ago on Stack Overflow]
I'd expect there to be some reference (either a file handle or an old-fashioned FCB) in the PSP, but there's ...
- 173k
4
votes
How did Windows 3.1 implement multitasking?
A "regular old MS-DOS program" can do absolutely anything. Modern operating systems run processes in sandboxes with limited privileges, where many things are either impossible or allowed ...
- 1,021
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