B717: Routine at B717
| B717 | LD B,A | 
| B718 | LD IX,$9C08 | 
| B71C | PUSH BC | 
| B71D | LD L,(IX+$01) | 
| B720 | LD H,(IX+$00) | 
| B723 | LD C,(IX+$03) | 
| B726 | LD B,(IX+$02) | 
| B729 | CALL $9CF4 | 
| B72C | LD BC,$0004 | 
| B72F | ADD IX,BC | 
| B731 | POP BC | 
| B732 | DJNZ $B71C | 
| B734 | XOR A | 
| B735 | LD ($9C24),A | 
| B738 | LD HL,$9C08 | 
| B73B | LD ($B2DA),HL | 
| B73E | RET | 
| B73F | NOP | 
| B740 | LD A,$C9 | 
| B742 | LD ($B73F),A | 
| B745 | LD HL,($9789) | 
| B748 | LD B,$B4 | 
| B74A | LD A,(HL) | 
| B74B | AND $90 | 
| B74D | JR Z,$B754 | 
| B74F | INC HL | 
| B750 | DJNZ $B74A | 
| B752 | JR $B764 | 
| B754 | LD IY,($B793) | 
| B758 | PUSH IX | 
| B75A | LD IX,$C0B8 | 
| B75E | CALL Sounds_Brick_Metal | 
| B761 | DI | 
| B762 | POP IX | 
| B764 | RET |