VOGONS


First post, by kingcake

User metadata
Rank Newbie
Rank
Newbie

I know DOS 3 doesn't come with HIMEM.SYS. Do I gain anything by using a third party memory manager like HIMEMX from FREEDOS? Or does DOS 3 just not support anything but base memory regardless?

Thanks.

Reply 1 of 5, by Kippesoep

User metadata
Rank Oldbie
Rank
Oldbie

DOS 3 (or even DOS 4) itself doesn't support something like that, however, there were things like Quarterdeck's QEMM and QRAM, Helix's Netroom, and Qualitas's 386Max that were capable of moving all kinds of stuff around. In many cases, they would work with DOS 3.3 or even 3.2.

Official support for was introduced with DOS 5's own HIMEM.SYS. This also made it much more convenient to load device drivers high, as it simply had the "devicehigh" command in config.sys

My site: Ramblings on mostly tech stuff.

Reply 2 of 5, by Zup

User metadata
Rank Oldbie
Rank
Oldbie

Or you can try using Compaq DOS 3.31a. Compaq shipped their Desktop 386 with a version of MS-DOS that supported FAT16B (=2Gb FAT support) and some memory management utilities (an EMM386 ancestor was included).

I don't know if that will work on every computer, but it's worth giving a try.

I have traveled across the universe and through the years to find Her.
Sometimes going all the way is just a start...

I'm selling some stuff!

Reply 3 of 5, by Jo22

User metadata
Rank l33t++
Rank
l33t++

MS-/PC-DOS 3.x does not know about HMA or UMBs, but you can still load Himem.sys on these OSes.
Programs using XMS will continue to work just fine.

"Time, it seems, doesn't flow. For some it's fast, for some it's slow.
In what to one race is no time at all, another race can rise and fall..." - The Minstrel

//My video channel//

Reply 4 of 5, by kingcake

User metadata
Rank Newbie
Rank
Newbie
Jo22 wrote on 2021-01-16, 08:42:

MS-/PC-DOS 3.x does not know about HMA or UMBs, but you can still load Himem.sys on these OSes.
Programs using XMS will continue to work just fine.

This is exactly what I wanted to know. Thank you!

Reply 5 of 5, by Jo22

User metadata
Rank l33t++
Rank
l33t++

You're welcome. :)

"Time, it seems, doesn't flow. For some it's fast, for some it's slow.
In what to one race is no time at all, another race can rise and fall..." - The Minstrel

//My video channel//