Hi, On Wed, 17 Aug 2022 at 18:21, Bret Johnson <bretj...@juno.com> wrote:
> The first thing I think to note is that DOSShell was MUCH more than just a > program launcher. It include the same basic implementation and > functionality that were in early versions of Windows (3.x) to perform > task-switching. With DOSShell, you could literally have several DOS > applications running at the same time and switch between them with a few > keystrokes. This was similar to other task-switching programs from the > same era, like DesqView and Software Carousel. It sounds like that level > of functionality is not required here. I always found DOSShell to be > "clunky" and even though I experimented with it a little I never really > liked it for what I was trying to do. I personally never tried any of the > other task-switching programs besides DOSShell (and, of course, Windows). > Under DOS-Shell, there was the DOSSWAP to do the task switching. But quite a different approach from multitasking, specially the preemptive way that appeared with Win386 (the VMM). Unfortunately, for the simplest (and useful) easier uses, I do not know of a free DOSSWAP replacement. I assume that such software would make copies of DOS and BIOS global variables (such as the list of lists) and swap them upon a task switch. Aitor
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