On Sun, Mar 15, 2015 at 9:34 PM, Thomas Mueller <mueller6...@twc.com> wrote:
> I remember using IBM's Tiny Editor, 16-bit for DOS and OS/2, in DR-DOS 7.03, 
> not open source.
>
> Tiny Editor was useful on IBM OS/2 installation floppies because of tiny 
> size, could edit up to about 350 KB file or a little larger, more in OS/2 1.x.

I think you're referring to T, a freeware editor by Tim Baldwin at
IBM's UK labs: http://texteditors.org/cgi-bin/wiki.pl?T

I have it here.  Like various other DOS editors, it edits files up the
the limit of conventional memory.

> Using elvis 2.2, I was able to view and edit files in DR-DOS above 1.5 MB, 
> but scrolling through a file of 3 MB was prohibitively slow; no such problem 
> in Linux.
>
> Maybe that was because DOS is not really made for large RAM.

Editors I'm aware of that ran under DOS and edited really large files
used spill files, keeping what would fit in memory in RAM, and the
rest on disk, swapping to disk as required.  On DOS machines, that was
*slow*.

DOS wasn't made for large RAM.  The 8088 CPU machines on which it ran
had an address space of 1MB, and 640K of that was usable by DOS.  If
you had more RAM than that installed, you needed it seen as EMS or
XMS, and accessed by convoluted programming.

> Still, I prefer to switch to Linux, FreeBSD or NetBSD to edit anything 
> serious, using vi.
>
> Apparently DOS, including FreeDOS, works better on an older computer than on 
> a modern computer.

Yes.  It was designed for older machines.  It simply can't use most of
what newer ones offer.

> Tom
______
Dennis
https://plus.google.com/u/0/105128793974319004519

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