jcjeant;
Thanks, now I see!
Below is an image of the PFD in Normal Law.
In Normal Law there is a green symbol which resembles an equal sign ( = ) which indicates when the VMO (or equivalent MMO) warning will occur. The symbol is removed when not in Normal Law. The alternating red and black strip is the overspeed regime. An overspeed is the lower of:
• VMO or MMO
• VLE
• VFE
An audible, non-silenceable chime sounds continuously until the overspeed condition no longer exists.
The overspeed warning functions in Normal, Alternate and Direct Laws. There is no speed protection in Alternate and Direct Laws.