commodorejohn
Joined: 06 May 2010
Posts: 13
Location: Minnesota, USA
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 Posted:
Tue Aug 10, 2010 8:25 pm |
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I recently rescued an AT Rambank II memory expander card from the local recycling center. It's filled to capacity with 2MB of RAM, and I see from this guide that it can be configured as either 2MB of EMS, or 2MB of XMS. I have a 286, so XMS is an option, but I'm trying to figure out whether it's the best choice for normal use, since DOS doesn't use protected mode and can't directly access high memory.
From Wikipedia's description, it sounds like real-mode XMS managers work by copying memory by hand into the conventional memory area. Is this correct? It sounds too awkward to be true, but you never know. EMS at least has hardware bank-switching, so it's bound to be faster than manual copying (if that is the case.) Any words of wisdom on the subject? |
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Packard-Bell 286 (DOS 3.3, 32MB HD, 2.6MB RAM, HGC/EGA)
Tandy 1000TX (DOS 3.2, 640KB RAM, TGA) |
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