storedBurst.py 文件源码

def _impl(self):
        self.DATA_WIDTH = int(self.DATA_WIDTH)
        vldAll = mask(self.DATA_WIDTH // 8)
        dout = self.dataOut
        DATA_LEN = len(self.DATA)

        wordIndex_w = int(math.log2(DATA_LEN) + 1)
        wordIndex = self._reg("wordIndex", Bits(wordIndex_w), defVal=0)

        Switch(wordIndex)\
        .addCases([(i, dout.data(d))
                    for i, d in enumerate(self.DATA)])\
        .Default(dout.data(None))

        dout.last(wordIndex._eq(DATA_LEN - 1))
        If(wordIndex < DATA_LEN,
            dout.strb(vldAll),
            dout.valid(1)
        ).Else(
            dout.strb(None),
            dout.valid(0)
        )

        If(self.dataRd(),
            self.nextWordIndexLogic(wordIndex)
        )