560 F9=A9+512 \ 6400H \ REM  ADDR OF FORMATTING ROUTINE
570 D9=A9+341 \ 6355H \REM  DRIVE NO. BYTE IN AUX ROUTINE
580 S1=A9+379 \ 637BH \REM  ADDR OF SECTOR PULSE COUNTING ROUTINE
590 S2=A9+414 \ 639EH \REM  ADDR OF SECTOR PULSE TIMING ROUTINE
600 B9=A9-512 \ 6000H \REM  ADDR OF BAD SPOT TABLE
610 B8=A9+188 \ 62BCH \REM  ROUTINE TO SET BAD SPOT
620 B7=A9+178 \ 62B2H \REM  ADDR OF BAD SPOT TESTING ROUTINE
630 B3=A9+300 \ 632CH \REM  ADDR OF BAD SPOT TABLE VERIFY ROUTINE
640 R2=A9+142 \ 628EH \REM  ADDR OF MULTIPLE SECTOR READ ROUTINE
650 W1=A9+136 \ 6288H \REM  ADDR OF MULTIPLE SECTOR WRITE ROUTINE
660 R=A9+34   \ 6222H \REM  ADDR OF ROUTINE TO READ 1 SECTOR 
667 R=A9      \ 6200H \REM  ROUTINE TO WRITE 1 SECTOR