New experimental feature in MicroWAVer 0.85:

loading COM files on MSX with only 64K of RAM, without loading MSX-DOS.
This means - no need in memory mapper, and now you can execute COMs even on MSX1 (with 64K of RAM at least)

Of course, neither MSX-DOS nor DISK.ROM present in memory, but there is a big number of COMs that don't access disk and don't require MSX-DOS calls.

I found a number of such COMs in my software collection - mostly COM versions of games ported from ZX Spectrum (Batman, Knight Tyme, etc.)

Your feedback and suggestions are welcome.

New release of MicroWAVer 0.9 adds the following:

1) files of any size can be loaded into RAM disk (big files are splitted into parts before loading and merged back into single file during loading)
2) in RAM disk loading mode, all files are pre-packed and then unpacked after loading, which results in significantly better loading time
3) creating self-extracting (packed) .com files
4) easier frontend GUI and command-line options usage
5) bugfix: files that can't be packed, now can be loaded without problems

As you see, MicroWAVer also can be used as an advanced format conversion tool.
It can do the following conversions:

a) ROM -> self-unpacking BIN (creates up to 24K BIN after ROM packing)
b) BAS -> self-unpacking BIN (applied to BAS files up to 24K before packing)
c) COM -> self-unpacking COM (packs COMs up to 43K before packing)