chisel3.util包里有一个单例对象Log2,它的一个apply方法接收一个Bits类型的参数,计算并返回该参数值以2为底的幂次。返回类型是UInt类型,并且是向下截断的。另一个apply的重载版本可以接受第二个Int类型的参数,用于指定返回结果的位宽。例如:Log2(8.U) // 等于3.ULog2(13.U) // 等于3.U(向下截断)Log2...
io.deq.bits := Mux(RdPtr(0)===0.U(1.W), entry0, entry1) }.otherwise{ //readmode==0 =>std io.deq.bits := RegNext(Mux(RdPtr(0)===0.U(1.W), entry0, entry1)) } /* generate if (READ_MODE == "fwft") begin assign dout = (rd_ptr[0] == 1'b0) ? entry0: entry...
As of Chisel v3.4.3 (1 July 2020), the width of the values is always inferred. To work around this, you can add an extraValuethat forces the width that is desired. This is shown in the example below, where we add a fielduknto force the width to be 3 bits wide: 从Chisel v3.4....
val nSets = p(NSets) val bBytes = p(CacheBlockBytes) val nastiExternal = p(NastiKey) val nastiXDataBits = nastiExternal.dataBits val nastiWStrobeBits = nastiXDataBits / 8 val nastiXAddrBits = nastiExternal.addrBits val nastiWIdBits = nastiExternal.idBits val nastiRIdBits = nastiExte...
UnknownWidth became a case object in this Chisel PR: chipsalliance/chisel#4242 The connectFromBits method was removed in this Chisel PR: chipsalliance/chisel#4168 The connectFromBits API was replac...
Make it legal to extract zero bits from a zero-width UInt (backport#4445) (by@mergify[bot] in#4447) Fix Arg.name and earlyLocalName for probes (backport#4359) (by@mergify[bot] in#4360) Fix Boring.rwTap on instance ports (backport#4451) (by@mergify[bot] in#4452) ...
子字赋值的可行办法是先调用Bits类型的toBools方法。该方法根据调用对象的0、1排列返回一个相应的Seq[Bool]类型的结果,并且低位在序列里的下标更小,比如第0位的下标就是0、第n位的下标就是n。然后用这个Seq[Bool]对象配合VecInit构成一个向量,此时就可以给单个比特赋值。注意,必须都是Bool类型,要注意赋值前是否...
首先输入部分,我们有io_{and,or,xor}Sw三个输入,每个输入 2 bits,我们将它们 绑定到板子上的 6 个开关上。 打开DE-10 Lite 开发板的User Manual 翻到关于Push-button、Switches、LEDs一节,找到对应的名称。 接着我们在最上方选择到Pin Planner,分配对应的引脚。
// output [7:0] io_out_bits // connection-operators.md:21:14 // ); // // wire _c_io_a_ready; // connection-operators.md:26:17 // wire _p_io_b_valid; // connection-operators.md:25:17 // wire [7:0] _p_io_b_bits; // connection-operators.md:25:17 ...
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