Please read this page from the main YASEP interface
version 2014-02-13

CMPE : CoMPare for Equality

This alias of CMPU means that this opcode is used only because it modifies the Equal flag, but the carry flag will not be used later.

When the two operands are equal, Eq is set to 1 (otherwise it is reset to 0) and you can use the EQ (EQual) or NEQ (Not EQual) conditions to enable the following instruction(s).