Ok, two possibilities:
1) the exe is fully pc relative, so you do not need to relocate it.
Simply strip the header (at start and end of the binary).
Then assemble:
Code:
bb:
dc.b 'DOS',0
dc.l checksum
dc.l $370
start: incbin "your.exe"
If you want to launch system you need a little stub at end.
2) relocate the exe at some fixed location.
Then:
Code:
bb:
dc.b 'DOS',0
dc.l checksum
dc.l $370
start: copy bin to right location
bin: incbin "your.exe"
But an real example sure is better
