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Detecting UMBs

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First post, by debs3759

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Does anyone know how memmaker detects free UMBs? Is there any way I can find out what UMB regions are free on various retro systems running MS-DOS 6.2? Trying to find a reliable and transferable way to maximise my free memory beyond what memmaker can do.

See my graphics card database at www.gpuzoo.com
Constantly being worked on. Feel free to message me with any corrections or details of cards you would like me to research and add.

Reply 1 of 2, by Jo22

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Hi, yes. You can manually explore which regions are free for UMB usage.
Programs like CheckIt! and MSD can display the memory spots between 640K and 1MB.
However, it is up to you to figure out if these are really free..
Some network cards and video adapters need free spaces at some locations.
Memaker can't foresee their needs, either. That's why the exclude switch of EMM386 exists.

"Time, it seems, doesn't flow. For some it's fast, for some it's slow.
In what to one race is no time at all, another race can rise and fall..." - The Minstrel

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Reply 2 of 2, by debs3759

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Thanks.

See my graphics card database at www.gpuzoo.com
Constantly being worked on. Feel free to message me with any corrections or details of cards you would like me to research and add.

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