section DOSENTRY class=DOSENTRY ..start: call far label mov ax, 4C00h int 21h section SYSINITSEG class=SYSINIT align=16 times 256 int3 section SYSINITTRAIL class=SYSINIT group SYSINITGROUP SYSINITSEG SYSINITTRAIL times 256 int3 label: retf times 256 int3 section MZEXESTACK stack class=STACK align=16 resb 512