Read the README.

aside from being able to use multiple configuration files, the next version of dosbox has support for restarting dosbox and thus using new settings that were not changable before.

collector : that was a little insightful ... saw a some more parameters to play with but not anything that would do anything for this...

qbix : that sound interesting...

when i was checking z:\ for the internal command i thought config was the solution. but i atm it only writes conf files.

Im was hoping for it to be sort of like config -read (or somthing) name.conf and dosbox could restart itself with that conf instead of the default.
or maybe that IS what you´re getting at.

then i looked at loadfix but that only for the convetional mem.

else i hope that say i booted with 64 meg and loadfix could eat up 32 then wheneve the 64 was needed it could uneat those 32.
whould be a workaround but it whould make it "dynamic".

just change what you need in the dosbox.conf file