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> configure(npc)

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ysyx_22040000 李心杨
 Linux calcite 6.6.19 #1-NixOS SMP PREEMPT_DYNAMIC Fri Mar  1 12:35:11 UTC 2024 x86_64 GNU/Linux
  09:29:14  up   0:19,  2 users,  load average: 1.32, 1.09, 0.72
This commit is contained in:
tracer-ysyx 2024-03-09 09:29:14 +08:00 committed by xinyangli
parent 3fde1fbac5
commit 1e10f8a249
2 changed files with 47 additions and 21 deletions
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33
npc/core/src/main/scala/Main.scala
View file

@ -3,9 +3,12 @@ package npc
import chisel3._ import chisel3._
import chisel3.util.{MuxLookup, Fill, Decoupled, Counter, Queue, Reverse} import chisel3.util.{MuxLookup, Fill, Decoupled, Counter, Queue, Reverse}
import chisel3.util.{SRAM} import chisel3.util.{SRAM}
import chisel3.util.experimental.decode.{decoder, TruthTable, QMCMinimizer}
import chisel3.stage.ChiselOption import chisel3.stage.ChiselOption
import npc.util.{ KeyboardSegController, RegisterFile } import npc.util.{ KeyboardSegController }
import flowpc.components.{ProgramCounter, ProgramCounterSel} import flowpc.components.RegisterFile
import chisel3.util.log2Ceil
import chisel3.util.BitPat
class Switch extends Module { class Switch extends Module {
val io = IO(new Bundle { val io = IO(new Bundle {
@ -33,12 +36,32 @@ class Keyboard extends Module {
io.segs := seg_handler.io.segs io.segs := seg_handler.io.segs
} }
object Opcode extends ChiselEnum { object RV32Inst extends ChiselEnum {
val addi = Value("b0010011".U) val addi = Value("b0010011".U)
val inv = Value("b0000000".U)
} }
class Control extends Bundle { object InstType extends ChiselEnum {
val R, I, S, B, U, J = Value
}
class RegControl(width: Int) extends Bundle {
object RegWriteDataSel extends ChiselEnum {
val ALUOut = Value
}
val T = RegWriteDataSel
val writeEnable = Output(Bool())
val writeSelect = Output(this.T())
}
class Control(width: Int) extends Bundle {
val inst = IO(Input(UInt(width.W)))
val out = decoder(QMCMinimizer, inst, TruthTable(
Map(
BitPat(Opcode.addi.asUInt) -> BitPat("b00001")
), BitPat("b?????")))
val regControl = new RegControl(width)
} }
class Flowpc extends Module { class Flowpc extends Module {

35
npc/core/src/main/scala/RegisterFile.scala
View file

@ -1,25 +1,28 @@
package npc.util package flowpc.components
import chisel3._ import chisel3._
import chisel3.util.log2Ceil
import chisel3.util.UIntToOH
class RegisterFile(readPorts: Int) extends Module { class RegisterFile(width: Int, numRegisters: Int, numReadPorts: Int) extends Module {
require(readPorts >= 0) require(numReadPorts >= 0)
val io = IO(new Bundle { val writePort = IO(new Bundle {
val writeEnable = Input(Bool()) val enable = Input(Bool())
val writeAddr = Input(UInt(5.W)) val addr = Input(UInt(log2Ceil(width).W))
val writeData = Input(UInt(32.W)) val data = Input(UInt(width.W))
val readAddr = Input(Vec(readPorts, UInt(5.W)))
val readData = Output(Vec(readPorts, UInt(32.W)))
}) })
val readPorts = IO(Vec(numReadPorts, new Bundle {
val addr = Input(UInt(log2Ceil(width).W))
val data = Output(UInt(width.W))
}))
val regFile = RegInit(VecInit(Seq.fill(32)(0.U(32.W)))) val regFile = RegInit(VecInit(Seq.fill(numRegisters)(0.U(32.W))))
for (i <- 1 until 32) { val writeAddrOH = UIntToOH(writePort.addr)
regFile(i) := regFile(i) for ((reg, i) <- regFile.zipWithIndex) {
reg := Mux(writeAddrOH(i) && writePort.enable, writePort.data, reg)
} }
regFile(io.writeAddr) := Mux(io.writeEnable, io.writeData, regFile(io.writeAddr))
regFile(0) := 0.U
for (i <- 0 until readPorts) { for (readPort <- readPorts) {
io.readData(i) := regFile(io.readAddr(i)) readPort.data := regFile(readPort.addr)
} }
} }