seek	=$0a28
curtrk_smc	=$0a28
phase_smc	=$0a33
driveon	=$0aa4
wait_1s	=$0ab3
driveoff	=$0a24
switch_drive1	=$08af
switch_drive2	=$08be
load_new	=$0abe
load_address	=$0ad7
load_track=load_address+1
load_sector=load_address+2
load_length=load_address+3