Results 1 to 2 of 2

Thread: Memory Problems with DOS VM

  1. #1

    Default Memory Problems with DOS VM


    In standard DOS the area above 604k was reserved for video memory, boot rom/bios and adapters requiring I/O.

    Now that I have DOS fullly loaded, I am trying to optimize the memory for best results.

    The problem is that Parallels is taking up all the memory between 640K and 1M. Typically Video memory was 8-32K, but parallels maps 128K of memory for video.

    Is there any way to change this?

    Second it takes up another 128K for ADAPTER Space above that and the the Bios & Boot ROM take up the rest.

    This means there is no way to enable EMS memory because there is no room for a page frame of 64K.

    Any ideas... Anyone at Parallels even read the forum????

    MacBook 2GHZ, 2GB, 120MB

  2. #2


    I'm having the same problem, too, except that I want to use QEMM (one of my favs from the DOS era) rather than HIMEM/EMM386.

    Has anyone come up with a solution and not posted it? Its pretty frustrating.
    Rich Cini
    Collector of Classic Computers
    Build Master and lead engineer, Altair32 Emulator

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts