Istype 'reg_D'
D Flip-flop Clocked Memory Element

Syntax

signal_name [,signal_name] [PIN|NODE] ISTYPE 'reg_d' ;

Use

Signal attribute 'reg_d' indicates that the associated signal has a D-type flip-flop as its memory element. When 'reg_D' is specified, equations generated from an ABEL-HDL state diagram will assume a D-type register. If this attribute is specified; however, you will need to specify the 'invert' or 'buffer' attribute to ensure consistent operation in different architectures. To eliminate the need for the 'invert' or 'buffer' attributes, use the 'reg' attribute instead of 'reg_D'.