> configure(npc)
ysyx_22040000 李心杨 Linux calcite 6.1.69 #1-NixOS SMP PREEMPT_DYNAMIC Wed Dec 20 16:00:29 UTC 2023 x86_64 GNU/Linux 20:30:51 up 1 day 19:31, 2 users, load average: 0.75, 0.84, 0.73
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tracer-ysyx
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21 changed files with 290 additions and 780 deletions
64
npc/core/src/test/scala/Keyboard.scala
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64
npc/core/src/test/scala/Keyboard.scala
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@ -0,0 +1,64 @@
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package npc.keyboard
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import chisel3._
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import chiseltest._
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import org.scalatest.freespec.AnyFreeSpec
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import chiseltest.simulator.WriteVcdAnnotation
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class KeyboardControllerSpec extends AnyFreeSpec with ChiselScalatestTester {
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def transfer(keycode: Int, clock: Clock, ps2: PS2Port) : Unit = {
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require(keycode >= 0 && keycode < 0xFF)
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var cycle = 0
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var keycode_remain = keycode << 1 // Shift 1 to do nothing at cycle 0
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var keycode_collect = 0
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ps2.data.poke(1)
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ps2.clk.poke(true)
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clock.step(1)
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for (cycle <- 0 until 9) {
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val last_digit = keycode_remain & 1
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ps2.clk.poke(true)
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ps2.data.poke(last_digit)
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clock.step(32)
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keycode_collect = keycode_collect | (last_digit << cycle)
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keycode_remain = keycode_remain >> 1
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ps2.clk.poke(false)
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clock.step(32)
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}
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for (_ <- 9 until 11) {
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ps2.clk.poke(true)
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clock.step(32)
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ps2.clk.poke(false)
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clock.step(32)
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}
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assert(keycode_collect >> 1 == keycode)
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clock.step(32)
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}
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"Simple test" in {
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test(new KeyboardController).withAnnotations(Seq(WriteVcdAnnotation)) { c =>
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val data = Array(0xE4, 0xD4, 0xC4, 0xA9)
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data.foreach(d => {
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transfer(d, c.clock, c.io.ps2)
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c.io.out.valid.expect(1.U)
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c.io.out.bits.expect(d)
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c.io.out.ready.poke(1)
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c.clock.step(1)
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c.io.out.ready.poke(0)
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})
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data.foreach(d => {
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transfer(d, c.clock, c.io.ps2)
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})
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data.foreach(d => {
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c.io.out.valid.expect(1.U)
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c.io.out.bits.expect(d)
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c.io.out.ready.poke(1)
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c.clock.step(1)
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c.io.out.ready.poke(0)
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})
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}
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}
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"Keyboard Simulation" in {
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test(new Keyboard) { c =>
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}
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}
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}
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@ -3,6 +3,7 @@ package npc
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import chisel3._
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import chiseltest._
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import org.scalatest.freespec.AnyFreeSpec
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import chiseltest.simulator.WriteVcdAnnotation
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class RegisterFileSpec extends AnyFreeSpec with ChiselScalatestTester {
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"RegisterFile should work" - {
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@ -41,97 +42,62 @@ class RegisterFileSpec extends AnyFreeSpec with ChiselScalatestTester {
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class ALUGeneratorSpec extends AnyFreeSpec with ChiselScalatestTester {
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"With 32 width, " - {
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val neg = (x: BigInt) => BigInt("FFFFFFFF", 16) - x + 1
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val not = (x: BigInt) => x ^ BigInt("FFFFFFFF", 16)
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val mask = BigInt("FFFFFFFF", 16)
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val oprands: List[(BigInt, BigInt)] = List(
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(5, 3), (101010, 101010), (0xFFFFFFFCL, 0xFFFFFFFFL), (4264115, 2)
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)
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val operations: Map[Int, (BigInt, BigInt) => BigInt] = Map(
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0 -> ((a: BigInt, b: BigInt) => (a + b) & mask),
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1 -> ((a: BigInt, b: BigInt) => (a + neg(b)) & mask),
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2 -> ((a, _) => not(a)),
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3 -> (_ & _),
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4 -> (_ | _),
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5 -> (_ ^ _),
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6 -> ((a, b) => if (a < b) 1 else 0),
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7 -> ((a, b) => if (a == b) 1 else 0),
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)
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val validate = (c: ALUGenerator,op: Int, oprands: List[(BigInt, BigInt)]) => {
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c.io.op.poke(op.U)
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oprands.foreach({ case (a, b) =>
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c.io.a.poke(a.U)
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c.io.b.poke(b.U)
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c.io.out.expect(operations(op)(a, b))
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})
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}
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"add should work" in {
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test(new ALUGenerator(32)) { c =>
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c.io.op.poke(0.U)
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c.io.a.poke(5.U)
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c.io.b.poke(3.U)
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c.io.out.expect(8.U)
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}
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test(new ALUGenerator(32)) { c => validate(c, 0, oprands) }
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}
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"sub should work" - {
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"with positive result" in {
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test(new ALUGenerator(32)) { c =>
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c.io.op.poke(1.U)
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c.io.a.poke(5.U)
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c.io.b.poke(3.U)
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c.io.out.expect(2)
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validate(c, 1, oprands.filter({case (a, b) => a >= b}))
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}
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}
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"with negative result" in {
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test(new ALUGenerator(32)) { c =>
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c.io.op.poke(1.U)
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c.io.a.poke(3.U)
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c.io.b.poke(5.U)
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c.io.out.expect(BigInt("FFFFFFFF", 16) - 1)
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validate(c, 1, oprands.filter({case (a, b) => a < b}))
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}
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}
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}
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"not should work" in {
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test(new ALUGenerator(32)) { c =>
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c.io.op.poke(2.U)
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c.io.a.poke(5.U)
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c.io.b.poke(3.U)
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c.io.out.expect(BigInt("FFFFFFFA", 16))
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}
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test(new ALUGenerator(32)) { c => validate(c, 2, oprands) }
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}
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"and should work" in {
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test(new ALUGenerator(32)) { c =>
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c.io.op.poke(3.U)
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c.io.a.poke(5.U)
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c.io.b.poke(3.U)
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c.io.out.expect(1.U)
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}
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test(new ALUGenerator(32)) { c => validate(c, 3, oprands) }
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}
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"or should work" in {
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test(new ALUGenerator(32)) { c =>
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c.io.op.poke(4.U)
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c.io.a.poke(5.U)
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c.io.b.poke(3.U)
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c.io.out.expect(7.U)
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}
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test(new ALUGenerator(32)) { c => validate(c, 4, oprands) }
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}
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"xor should work" in {
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test(new ALUGenerator(32)) { c =>
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c.io.op.poke(5.U)
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c.io.a.poke(5.U)
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c.io.b.poke(3.U)
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c.io.out.expect(6.U)
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}
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test(new ALUGenerator(32)) { c => validate(c, 5, oprands) }
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}
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"compare should work" in {
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test(new ALUGenerator(32)) { c =>
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c.io.op.poke(6)
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c.io.a.poke(62.U)
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c.io.b.poke(3.U)
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c.io.out.expect(0.U)
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c.io.a.poke(2.U)
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c.io.b.poke(103.U)
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c.io.out.expect(1.U)
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c.io.a.poke(16.U)
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c.io.b.poke(16.U)
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c.io.out.expect(0.U)
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}
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test(new ALUGenerator(32)) { c => validate(c, 6, oprands) }
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}
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"equal should work" in {
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test(new ALUGenerator(32)) { c =>
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c.io.op.poke(7)
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c.io.a.poke(62.U)
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c.io.b.poke(3.U)
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c.io.out.expect(0.U)
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c.io.a.poke(2.U)
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c.io.b.poke(103.U)
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c.io.out.expect(0.U)
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c.io.a.poke(16.U)
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c.io.b.poke(16.U)
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c.io.out.expect(1.U)
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}
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test(new ALUGenerator(32)) { c => validate(c, 7, oprands) }
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}
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}
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}
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