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Plasma Fri May 29 2026 at 2:37 pm
Is the additional memory EMS?
Or is it just mapped to the UMA?
EMS would be out of scope to due code space constraints. It might be possible to add an upper memory area test, but it wouldn't actually be testing the entire 1MB because some of that address space is mapped to the video card, BIOS, and possibly other ROMs like XT-IDE.
If you are using a CGA or mono video card, you can increase MAX_MEMORY (uncomment line 57 or 58, then build the BIOS), which will slightly expand your conventional memory and test up to the new limit.
If you just want it to display 1024K after the conventional memory test has completed, that would be fairly easy.
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