I think that I was previously mistaken when I observed that Fractint's "Video Disk Node" uses XMS on my system. I've since observed that Fractint's "Video Disk Mode" uses Expanded Memeory Services which according to you is EMS. How much EMS in my Fractint DOS box should I allow should I allow? Several Fractint "old-timers" have discouraged me from using EMS, on the grounds that XMS is faster but if the "Video Disk Mode" is calling for EMS, shouldn't I be loading EMS? Is there a way to configure Fractint.exe or Sstools.ini how to use memory?. I'd like to hear some opinions, how much I should allow for EMS? XMS, HMA, & DPMI in my FRactint "Dos Box"? All the best, Tony ----- Original Message ----- From: "David Jones" <gnome@hawaii.rr.com> To: <fractint@mailman.xmission.com> Sent: Sunday, November 03, 2002 5:55 PM Subject: Re: [Fractint] Re: clean boot and bat files
On 3 Nov 02, at 15:19, Tony Parker wrote:
BTW, I have noticed that Video Disk Mode accesses "Extended Memory Services". Is "Extended Memory Services" EMS or XMS?
XMS. EMS stands for Expanded Memory Services.
Think of extended memory as extending the usually memory out further, e.g, adding the memory beyond 1024K into the memory range linearly. An app using XMS can see and work with the entire range of XMS available to it.
Expanded memory doesn't extend the memory address range, it effectively sets up a vertical memory range of 64KB chunks that are made visible within a 64KB chunk of the real mode address space. An app using EMS has to figure out which 64K chunk of the EMS memory it needs, have that chunk mapped into the real mode memory slot set aside of EMS, then work with its data.
David gnome@hawaii.rr.com
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