Hi Bob, Dennis, Good point on these hardware EMS cards, it is indeed a way of providing additional memory irrespectively of the CPU model. I never had one of these, but I did hear about them. I stand corrected on that one! :)
cheers, Mateusz On 02/09/2015 18:12, dmccunney wrote: > On Wed, Sep 2, 2015 at 1:37 AM, Mateusz Viste <mate...@viste.fr> wrote: >> On 02/09/2015 04:43, Ralf Quint wrote: >>> You are making a totally wrong assumptionn that 16bit software means you >>> are limited to 640KB of memory. >> >> Absolutely not - my assumption is that running on 8086/80186 means I am >> limited to 640KB (or let's say < 1M). Hence for software with higher >> memory requirements there is little or no advantage of being 16bit. > > And getting around the 640K limit was the reason for HIMEM,SYS, EMS, > XMS, and playing games with the A20 address line. I routinely used > the capability when I *was* running on an 8086. My old XT clone had > an expansion card with a MB of additional RAM, split between a > ramdisk, disk cache, and EMS memory for apps that could use it. This > all started back *before* the 286 and later 386 CPUs became common. > > If you wish to restrict yourself to 640K, feel free, but it's a > choice, not a requirement. > >> Mateusz > ______ > Dennis > https://plus.google.com/u/0/105128793974319004519 > ------------------------------------------------------------------------------ Monitor Your Dynamic Infrastructure at Any Scale With Datadog! Get real-time metrics from all of your servers, apps and tools in one place. SourceForge users - Click here to start your Free Trial of Datadog now! http://pubads.g.doubleclick.net/gampad/clk?id=241902991&iu=/4140 _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
