DOS ain't dead

DOS and 4 GB of memory (Users)

posted by Zyzzle, 31.07.2008, 00:35

I realize the whole 4 GB address space cannot be directly used in DOS in 32-bit systems because of virtual mapping, etc. The most I've been able to get HIMEM.SYS ver. 3.0 to see is 3328 MB. This is with an old 128-MB ATI Radeon 9200 card. Am I correct in assuming that reducing the total video memory will augment the total available DOS RAM? So using an old 4 MB or 8 MB card would give me more addressable memory?

I'm surprised the HIMEM.SYS even sees above 2 GB, and I was able to use HX DOS-extender to run Win32 apps like PIFAST 4.3, and utilize above & beyond 3 GB of memory.

What is the closes anyone on this board has gotten to utilizing the full 4 GB on their DOS systems?

Can 16-bit apps be tweaked to see > 2 GB. Specifically, I'm wanting to create a RAMDISK over 2 GB in FAT16, utilizing 64-kb clustersize.

What about PAE -extensions in DOS to utilize > 4 GB memory on a 64-bit CPU?

All thoughts & comments on this much appreciated!

Complete thread:

• DOS and 4 GB of memory - Zyzzle, 31.07.2008, 00:35 (Users)
  • DOS and 4 GB of memory - marcov, 31.07.2008, 10:56
    • DOS and 4 GB of memory - ecm, 31.07.2008, 16:32
    • DOS and 4 GB of memory - RayeR, 31.07.2008, 23:23
      • DOS and 4 GB of memory - marcov, 01.08.2008, 12:39
        • DOS and 4 GB of memory - Zyzzle, 01.08.2008, 23:37
          • DOS and 4 GB of memory - Rugxulo, 02.08.2008, 08:12
            • DOS and 4 GB of memory - RayeR, 03.08.2008, 00:59
              • DOS and 4 GB of memory - Japheth, 03.08.2008, 06:15
                • DOS and 4 GB of memory - Rugxulo, 06.08.2008, 01:11
                  • DOS and 4 GB of memory - Japheth, 06.08.2008, 07:15
                    • DOS and 4 GB of memory - Rugxulo, 07.08.2008, 05:37
                      • DOS and 4 GB of memory - Japheth, 07.08.2008, 10:08
                  • DOS and 4 GB of memory - RayeR, 06.08.2008, 15:09
  • DOS and 4 GB of memory - Steve, 31.07.2008, 13:00
  • DOS and 4 GB of memory - Rugxulo, 31.07.2008, 20:00
    • DOS and 4 GB of memory (CWSDPMI) - Rugxulo, 01.08.2008, 05:01
      • DOS and 4 GB of memory (CWSDPMI) - RayeR, 11.08.2008, 17:28
        • DOS and 4 GB of memory (CWSDPMI) - Rugxulo, 12.08.2008, 07:20
          • DOS and 4 GB of memory (CWSDPMI) - RayeR, 12.08.2008, 11:43
            • DOS and 4 GB of memory (CWSDPMI) - Rugxulo, 14.08.2008, 04:28
    • DOS and 4 GB of memory - Zyzzle, 04.08.2008, 00:13
      • DOS and 4 GB of memory - rr, 04.08.2008, 09:26
        • DOS and 4 GB of memory - Rugxulo, 04.08.2008, 23:19