.code16.text   jmp LABEL_START   nopBS_OEMNAME:      .ascii "Kongxw  "BPB_BytsPerSec:  .2byte  512BPB_SecPerCluster: .byte 1BPB_ResvdSecCnt:  .2byte 1BPB_NumFATS:     .byte   2BPB_RootEntCnt:  .2byte  224BPB_TotSec16:    .2byte  2880BPB_Media:       .byte   0xf0BPB_FATSz16:     .2byte  9BPB_SecPerTrk:   .2byte  18BPB_NumHeads:    .2byte  2BPB_HiddSec :    .4byte  0BPB_TotSec32:    .4byte  0BS_DrvNum:       .byte   0BS_Reserved1:    .byte   0BS_BootSig:      .byte   0x29BS_VolID:        .4byte  0BS_VolLab:       .ascii "Kongxw-flpa"BS_FileSysType:  .ascii "FAT12   "LABEL_START:   mov %cs,%ax   mov %ax,%ds   mov %ax,%es   call DispStr   jmp .DispStr:    mov     $0x0600,%ax   /* %ah=6, %al=0 */    mov     $0x0700,%bx   /* Black white */    mov     $0,%cx        /* Top left: (0,0) */    mov     $0x184f,%dx   /* Bottom right: (80,50) */    int     $0x10    mov $BootMessage, %ax   mov %ax,%bp   mov $24,%cx   mov $0x1301,%ax   mov $0x00c, %bx   mov $0,%dl   int $0x10   retBootMessage: .ascii "Hello,Kongxw's OS world!"   .org 510   .word 0xaa55