The standard binary output format generated by the linker for the Apple ][ target is a machine language program with a 4 byte DOS 3.3 header. The standard load address is $800.
The DOS header is in its own segment named EXEHDR
. If you don't want the
header for some reason, you can change
HEADER: start = $0000, size = $4, file = %O;
to
HEADER: start = $0000, size = $4, file = "";
in the linker configuration to have the linker remove it.