attribute ASYNC_REG : string;
attribute ASYNC_REG of sync_regs : signal is "TRUE";
attribute ASYNC_REG : boolean;
attribute ASYNC_REG of sync_regs : signal is TRUE;
attribute ASYNC_REG : string;
attribute ASYNC_REG of sync_regs : signal is "TRUE";
attribute ASYNC_REG : boolean;
attribute ASYNC_REG of sync_regs : signal is TRUE;