ofs 00h - Date display format (1 - DD/MM/YY, 2 - DD/Month/YYYY)
ofs 01h - Time display format (1 - 24hrs, 2 - 12hrs)
ofs 06h - Font size      : 0 - Big, 1 - Small
ofs 14h - Open to answer : 1-on,0-off
ofs 22h - PowerUp tone   : 1-on,0-off
ofs 23h - Startup logo   : 1-on,0-off
ofs 24h - PowerDown tone : 1-on,0-off
ofs 19Ch dd LifetimeCounter