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What is DOS Protected Mode? / DOS Extenders [Byte Size] | Nostalgia Nerd

DOS Extenders! Most of us are familiar with seeing DOS/4GW upon starting our favourite DOS games, but many of us didn't stop to think what this little "Dos Extender" did, or how it opened up a wealth of games for our protected mode systems. Of course many of us did, myself included, and like other Protected Mode Interfaces, DOS/4GW operated under the DPMI specification designed to allow the new 286 and 386 machines to make use of memory over 1MB. Before that Real Mode DOS applications could only make use of memory in the PC up to 1,024KB. This video explores the makeup of a PC memory, conventional memory, extended memory and the reasons behind the DOS Protected Mode Interface. ☟Sharing☟ If you wish to share this video in forums, social media, on your website, *please do so*! It helps tremendously with the channel! ☟Subcribe☟ https://www.youtube.com/user/nostalgi... ✊Support Me! ✊ *Please consider supporting the channel on Patreon*: https://www.patreon.com/nostalgianerd... Visit my eBay Shop: http://ebay.to/1QQpYyy Buy From Amazon (Amazon give a small commission to my affiliate account): http://amzn.to/2iGA3Yq ★Join me on Social Media★ Twitter:   / nostalnerd   Face:   / nostalnerd   Instagram:   / nostalgianerd   Web: http://www.nostalgianerd.com ★Equipment★ Lumix G6 with Vario 14-42mm Lens Nikon D3200 with 40mm Macro Corel Video Studio Ultimate X9 Corel Paint Shop Pro X6 Blue Snowball Microphone ♜Resources♜ BG Music is Royalty Free: Digital Solitude Close My Mouth (available from the Youtube audio library) If you believe I have forgotten to attribute anything in this video, please let me know, so I can add the source in. It takes time to make these videos and therefore it can be easy to forget things or make a mistake.