taglinefilesource code
HDB1175arch/m68k/atari/atafb.cpar->HDB = gstart - hdb_off/prescale;
HDB1177arch/m68k/atari/atafb.cif (par->HDB < 0) par->HDB += par->HHT + 2 + 0x200;
HDB1182arch/m68k/atari/atafb.cif (par->HDB & 0x200  &&  par->HDB & ~0x200 - par->HDE <= 5) {