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拆分读写访问地址线，以优化时序

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This commit is contained in:
Ruige Lee
2025-05-21 10:28:36 +08:00
parent d90ea07f5e
commit 8779d92790
4 changed files with 137 additions and 120 deletions
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215
src/main/scala/backBoard/shin/Interface.scala
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@@ -375,7 +375,8 @@ abstract class InterfaceBase extends Module{
//spi信号
val addrSel = Wire(UInt(16.W))
val addrr = Wire(UInt(16.W))
val addrw = Wire(UInt(16.W))
val dataw = Wire( UInt(8.W) )
val datar = Wire( UInt(8.W) )
val isEnW = Wire(Bool())
@@ -398,10 +399,16 @@ trait InterfaceMCUop{ this: InterfaceBase =>
( cReg.spiSel === 2.U ) -> oQSpi.io.isEnW,
))
addrSel := Mux1H(Seq(
( cReg.spiSel === 0.U ) -> iQSpi.io.addrSel,
( cReg.spiSel === 1.U ) -> oSpi.io.addrSel,
( cReg.spiSel === 2.U ) -> oQSpi.io.addrSel,
addrr := Mux1H(Seq(
( cReg.spiSel === 0.U ) -> iQSpi.io.addrr,
( cReg.spiSel === 1.U ) -> oSpi.io.addrr,
( cReg.spiSel === 2.U ) -> oQSpi.io.addrr,
))
addrw := Mux1H(Seq(
( cReg.spiSel === 0.U ) -> iQSpi.io.addrw,
( cReg.spiSel === 1.U ) -> oSpi.io.addrw,
( cReg.spiSel === 2.U ) -> oQSpi.io.addrw,
))
dataw := Mux1H(Seq(
@@ -417,15 +424,15 @@ trait InterfaceMCUop{ this: InterfaceBase =>
))
datar := MuxCase( 0.U, Array(
((addrSel & "hFF00".U) === "h0000".U) -> AcquireReg(addr = addrSel),
((addrSel & "hFF00".U) === "h0800".U) -> io.sram_r(0).datar,
((addrSel & "hFF00".U) === "h1000".U) -> 0.U,
((addrSel & "hFF00".U) === "h1800".U) -> io.sram_r(1).datar,
((addrSel & "hFF00".U) === "h2000".U) -> 0.U,
((addrSel & "hFF00".U) === "h2800".U) -> io.sram_r(2).datar,
((addrSel & "hFF00".U) === "h3000".U) -> 0.U,
((addrSel & "hFF00".U) === "h3800".U) -> io.sram_r(3).datar,
((addrSel & "hFF00".U) === "h4000".U) -> 0.U,
((addrr & "hFF00".U) === "h0000".U) -> AcquireReg(addr = addrr),
((addrr & "hFF00".U) === "h0800".U) -> io.sram_r(0).datar,
((addrr & "hFF00".U) === "h1000".U) -> 0.U,
((addrr & "hFF00".U) === "h1800".U) -> io.sram_r(1).datar,
((addrr & "hFF00".U) === "h2000".U) -> 0.U,
((addrr & "hFF00".U) === "h2800".U) -> io.sram_r(2).datar,
((addrr & "hFF00".U) === "h3000".U) -> 0.U,
((addrr & "hFF00".U) === "h3800".U) -> io.sram_r(3).datar,
((addrr & "hFF00".U) === "h4000".U) -> 0.U,
))
iQSpi.io.datar := Mux(cReg.spiSel === 0.U, datar, 0.U)
@@ -433,42 +440,42 @@ trait InterfaceMCUop{ this: InterfaceBase =>
oQSpi.io.datar := Mux(cReg.spiSel === 2.U, datar, 0.U)
when( isEnW ){
printf(s"SPI/QSPI Write 0x%x, @0x%x\n", dataw, addrSel)
printf(s"SPI/QSPI Write 0x%x, @0x%x\n", dataw, addrw)
}
when( isEnR ){
printf(s"SPI/QSPI Readout 0x%x, @0x%x\n", datar, addrSel)
printf(s"SPI/QSPI Readout 0x%x, @0x%x\n", datar, addrr)
}
cReg.mstOrSlv := RegEnable( dataw(1,0), 0.U, isEnW & addrSel === "h0".U & cReg.mstOrSlv === 0.U )
cReg.hwVersion := RegEnable( dataw , 0.U, isEnW & addrSel === "h1".U & cReg.mstOrSlv === 0.U )
cReg.mstOrSlv := RegEnable( dataw(1,0), 0.U, isEnW & addrw === "h0".U & cReg.mstOrSlv === 0.U )
cReg.hwVersion := RegEnable( dataw , 0.U, isEnW & addrw === "h1".U & cReg.mstOrSlv === 0.U )
cReg.hwSerial :=
Cat(
(0 until 6).map{ i =>
RegEnable( dataw, 0.U, isEnW & addrSel === ("h2".U + i.U) & cReg.mstOrSlv === 0.U )
RegEnable( dataw, 0.U, isEnW & addrw === ("h2".U + i.U) & cReg.mstOrSlv === 0.U )
}.reverse
)
cReg.busRate := RegEnable( dataw, 0.U, isEnW & addrSel === "h8".U & cReg.mstOrSlv === 0.U )
cReg.spiSel := RegEnable( dataw(1,0), 0.U, isEnW & addrSel === "h9".U & cReg.mstOrSlv === 0.U )
cReg.busRate := RegEnable( dataw, 0.U, isEnW & addrw === "h8".U & cReg.mstOrSlv === 0.U )
cReg.spiSel := RegEnable( dataw(1,0), 0.U, isEnW & addrw === "h9".U & cReg.mstOrSlv === 0.U )
cReg.encryptKey :=
Cat(
(0 until 16).map{ i =>
RegEnable( dataw, 0.U, isEnW & addrSel === ("h50".U + i.U) & cReg.mstOrSlv === 0.U )
RegEnable( dataw, 0.U, isEnW & addrw === ("h50".U + i.U) & cReg.mstOrSlv === 0.U )
}.reverse
)
mReg.txSM := RegEnable( dataw(2,1), 0.U, isEnW & addrSel === "h20".U )
mReg.rxSM := RegEnable( dataw(4,3), 0.U, isEnW & addrSel === "h20".U )
// mReg.txLength := Cat( RegEnable( dataw, 0.U, isEnW & addrSel === "h22".U ), RegEnable( dataw, 0.U, isEnW & addrSel === "h21".U ) )
mReg.txSM := RegEnable( dataw(2,1), 0.U, isEnW & addrw === "h20".U )
mReg.rxSM := RegEnable( dataw(4,3), 0.U, isEnW & addrw === "h20".U )
// mReg.txLength := Cat( RegEnable( dataw, 0.U, isEnW & addrw === "h22".U ), RegEnable( dataw, 0.U, isEnW & addrw === "h21".U ) )
( 0 until 128 ).map{ i =>
cReg.custom(i) := RegEnable( dataw, 0.U, isEnW & (addrSel === ("h180".U + i.U)) )
cReg.custom(i) := RegEnable( dataw, 0.U, isEnW & (addrw === ("h180".U + i.U)) )
}
@@ -476,60 +483,60 @@ trait InterfaceMCUop{ this: InterfaceBase =>
mReg.rplTimeStampTx :=
Cat(
RegEnable( dataw, 0.U, isEnW & addrSel === "h25".U ),
RegEnable( dataw, 0.U, isEnW & addrSel === "h24".U )
RegEnable( dataw, 0.U, isEnW & addrw === "h25".U ),
RegEnable( dataw, 0.U, isEnW & addrw === "h24".U )
)
when( isEnW & isSlvMode ){
when( addrSel === "h120".U ){
when( addrw === "h120".U ){
syncCfg := dataw
}
for( i <- 0 until 4 ){
when( io.lvds.addrSel === ("h122".U + (2*i).U)){
when( io.lvds.addrw === ("h122".U + (2*i).U)){
syncWidth(i) := Cat( syncWidth(i)(15,8), io.lvds.dataw )
} .elsewhen( io.lvds.addrSel === ("h123".U + (2*i).U) ){
} .elsewhen( io.lvds.addrw === ("h123".U + (2*i).U) ){
syncWidth(i) := Cat( io.lvds.dataw, syncWidth(i)(7,0) )
}
}
when( addrSel === "h130".U ){
when( addrw === "h130".U ){
syncPoint := Cat( syncPoint(63,8), dataw )
} .elsewhen( addrSel === "h131".U ){
} .elsewhen( addrw === "h131".U ){
syncPoint := Cat( syncPoint(63,16), dataw, syncPoint(7,0) )
} .elsewhen( addrSel === "h132".U ){
} .elsewhen( addrw === "h132".U ){
syncPoint := Cat( syncPoint(63,24), dataw, syncPoint(15,0) )
} .elsewhen( addrSel === "h133".U ){
} .elsewhen( addrw === "h133".U ){
syncPoint := Cat( syncPoint(63,32), dataw, syncPoint(23,0) )
} .elsewhen( addrSel === "h134".U ){
} .elsewhen( addrw === "h134".U ){
syncPoint := Cat( syncPoint(63,40), dataw, syncPoint(31,0) )
} .elsewhen( addrSel === "h135".U ){
} .elsewhen( addrw === "h135".U ){
syncPoint := Cat( syncPoint(63,48), dataw, syncPoint(39,0) )
} .elsewhen( addrSel === "h136".U ){
} .elsewhen( addrw === "h136".U ){
syncPoint := Cat( syncPoint(63,56), dataw, syncPoint(47,0) )
} .elsewhen( addrSel === "h137".U ){
} .elsewhen( addrw === "h137".U ){
syncPoint := Cat( dataw, syncPoint(55,0) )
}
.elsewhen( addrSel === "h138".U ){
.elsewhen( addrw === "h138".U ){
syncPeroid := Cat( syncPeroid(31,8), dataw )
} .elsewhen( addrSel === "h139".U ){
} .elsewhen( addrw === "h139".U ){
syncPeroid := Cat( syncPeroid(31,16), dataw, syncPeroid(7,0) )
} .elsewhen( addrSel === "h13a".U ){
} .elsewhen( addrw === "h13a".U ){
syncPeroid := Cat( syncPeroid(31,24), dataw, syncPeroid(15,0) )
} .elsewhen( addrSel === "h13b".U ){
} .elsewhen( addrw === "h13b".U ){
syncPeroid := Cat( dataw, syncPeroid(23,0) )
}
for( i <- 1 until 4 ){
when( addrSel === ("h13c".U + (4*(i-1)).U) ){
when( addrw === ("h13c".U + (4*(i-1)).U) ){
syncOffset(i) := Cat( syncOffset(i)(31,8), dataw )
} .elsewhen( addrSel === ("h13d".U + (4*(i-1)).U) ){
} .elsewhen( addrw === ("h13d".U + (4*(i-1)).U) ){
syncOffset(i) := Cat( syncOffset(i)(31,16), dataw, syncOffset(i)(7,0) )
} .elsewhen( addrSel === ("h13e".U + (4*(i-1)).U) ){
} .elsewhen( addrw === ("h13e".U + (4*(i-1)).U) ){
syncOffset(i) := Cat( syncOffset(i)(31,24), dataw, syncOffset(i)(15,0) )
} .elsewhen( addrSel === ("h13f".U + (4*(i-1)).U) ){
} .elsewhen( addrw === ("h13f".U + (4*(i-1)).U) ){
syncOffset(i) := Cat( dataw, syncOffset(i)(23,0) )
}
}
@@ -541,116 +548,110 @@ trait InterfaceMCUop{ this: InterfaceBase =>
trait InterfaceCheckSM{ this: InterfaceBase =>
val isEnW: Bool
val addrSel: UInt
val addrw: UInt
val dataw: UInt
val isEnR: Bool
for( i <- 0 until 8 ){
cReg.smTrigLen(i) :=
Cat(
RegEnable( dataw, 0.U, isEnW & addrSel === ("h303".U + (i*4).U) ),
RegEnable( dataw, 0.U, isEnW & addrSel === ("h302".U + (i*4).U) ),
RegEnable( dataw, 0.U, isEnW & addrw === ("h303".U + (i*4).U) ),
RegEnable( dataw, 0.U, isEnW & addrw === ("h302".U + (i*4).U) ),
)
}
io.sram_r(0).addrr := addrSel
io.sram_r(1).addrr := addrSel
io.sram_r(2).addrr := addrSel
io.sram_r(3).addrr := addrSel
io.sram_r(0).addrr := addrr
io.sram_r(1).addrr := addrr
io.sram_r(2).addrr := addrr
io.sram_r(3).addrr := addrr
io.sram_r(0).enr := isEnR & (( addrSel & "hF800".U ) === "h0800".U)
io.sram_r(1).enr := isEnR & (( addrSel & "hF800".U ) === "h1800".U)
io.sram_r(2).enr := isEnR & (( addrSel & "hF800".U ) === "h2800".U)
io.sram_r(3).enr := isEnR & (( addrSel & "hF800".U ) === "h3800".U)
io.sram_r(0).enr := isEnR & (( addrr & "hF800".U ) === "h0800".U)
io.sram_r(1).enr := isEnR & (( addrr & "hF800".U ) === "h1800".U)
io.sram_r(2).enr := isEnR & (( addrr & "hF800".U ) === "h2800".U)
io.sram_r(3).enr := isEnR & (( addrr & "hF800".U ) === "h3800".U)
io.sram_w(0).addrw := addrSel
io.sram_w(1).addrw := addrSel
io.sram_w(2).addrw := addrSel
io.sram_w(3).addrw := addrSel
io.sram_w(0).addrw := addrw
io.sram_w(1).addrw := addrw
io.sram_w(2).addrw := addrw
io.sram_w(3).addrw := addrw
io.sram_w(0).dataw := dataw
io.sram_w(1).dataw := dataw
io.sram_w(2).dataw := dataw
io.sram_w(3).dataw := dataw
io.sram_w(0).enw := isEnW & (( addrSel & "hF800".U ) === "h1000".U)
io.sram_w(1).enw := isEnW & (( addrSel & "hF800".U ) === "h2000".U)
io.sram_w(2).enw := isEnW & (( addrSel & "hF800".U ) === "h3000".U)
io.sram_w(3).enw := isEnW & (( addrSel & "hF800".U ) === "h4000".U)
io.sram_w(0).enw := isEnW & (( addrw & "hF800".U ) === "h1000".U)
io.sram_w(1).enw := isEnW & (( addrw & "hF800".U ) === "h2000".U)
io.sram_w(2).enw := isEnW & (( addrw & "hF800".U ) === "h3000".U)
io.sram_w(3).enw := isEnW & (( addrw & "hF800".U ) === "h4000".U)
io.dSMdeq(0) := isEnR & (( addrSel & "hF800".U ) === "h0800".U) & (addrSel(10,0) === cReg.smTrigLen(0) - 1.U)
io.dSMdeq(1) := isEnR & (( addrSel & "hF800".U ) === "h0800".U) & (addrSel(10,0) === cReg.smTrigLen(2) - 1.U)
io.dSMdeq(2) := isEnR & (( addrSel & "hF800".U ) === "h0800".U) & (addrSel(10,0) === cReg.smTrigLen(4) - 1.U)
io.dSMdeq(3) := isEnR & (( addrSel & "hF800".U ) === "h0800".U) & (addrSel(10,0) === cReg.smTrigLen(6) - 1.U)
io.dSMdeq(0) := isEnR & (( addrr & "hF800".U ) === "h0800".U) & (addrr(10,0) === cReg.smTrigLen(0) - 1.U)
io.dSMdeq(1) := isEnR & (( addrr & "hF800".U ) === "h0800".U) & (addrr(10,0) === cReg.smTrigLen(2) - 1.U)
io.dSMdeq(2) := isEnR & (( addrr & "hF800".U ) === "h0800".U) & (addrr(10,0) === cReg.smTrigLen(4) - 1.U)
io.dSMdeq(3) := isEnR & (( addrr & "hF800".U ) === "h0800".U) & (addrr(10,0) === cReg.smTrigLen(6) - 1.U)
io.uSMenq(0) := isEnW & (( addrSel & "hF800".U ) === "h1000".U) & (addrSel(10,0) === cReg.smTrigLen(1) - 1.U)
io.uSMenq(1) := isEnW & (( addrSel & "hF800".U ) === "h2000".U) & (addrSel(10,0) === cReg.smTrigLen(3) - 1.U)
io.uSMenq(2) := isEnW & (( addrSel & "hF800".U ) === "h3000".U) & (addrSel(10,0) === cReg.smTrigLen(5) - 1.U)
io.uSMenq(3) := isEnW & (( addrSel & "hF800".U ) === "h4000".U) & (addrSel(10,0) === cReg.smTrigLen(7) - 1.U)
io.uSMenq(0) := isEnW & (( addrw & "hF800".U ) === "h1000".U) & (addrw(10,0) === cReg.smTrigLen(1) - 1.U)
io.uSMenq(1) := isEnW & (( addrw & "hF800".U ) === "h2000".U) & (addrw(10,0) === cReg.smTrigLen(3) - 1.U)
io.uSMenq(2) := isEnW & (( addrw & "hF800".U ) === "h3000".U) & (addrw(10,0) === cReg.smTrigLen(5) - 1.U)
io.uSMenq(3) := isEnW & (( addrw & "hF800".U ) === "h4000".U) & (addrw(10,0) === cReg.smTrigLen(7) - 1.U)
}
trait InterfaceLVDSop{ this: InterfaceBase =>
// io.lvds.addrSel = Output(UInt(16.W))
// io.lvds.dataw = Output( UInt(8.W) )
// io.lvds.datar = Input( UInt(8.W) )
// io.lvds.isEnW = Output(Bool())
// io.lvds.isEnR = Output(Bool())
io.lvds.datar := AcquireReg(addr = io.lvds.addrSel)
io.lvds.datar := AcquireReg(addr = io.lvds.addrr)
when( io.lvds.isEnW & isSlvMode ){
when( io.lvds.addrSel === "h120".U ){
when( io.lvds.addrw === "h120".U ){
syncCfg := io.lvds.dataw
}
for( i <- 0 until 4 ){
when( io.lvds.addrSel === ("h122".U + (2*i).U)){
when( io.lvds.addrw === ("h122".U + (2*i).U)){
syncWidth(i) := Cat( syncWidth(i)(15,8), io.lvds.dataw )
} .elsewhen( io.lvds.addrSel === ("h123".U + (2*i).U) ){
} .elsewhen( io.lvds.addrw === ("h123".U + (2*i).U) ){
syncWidth(i) := Cat( io.lvds.dataw, syncWidth(i)(7,0) )
}
}
.elsewhen( io.lvds.addrSel === "h130".U ){
.elsewhen( io.lvds.addrw === "h130".U ){
syncPoint := Cat( syncPoint(63,8), io.lvds.dataw )
} .elsewhen( io.lvds.addrSel === "h131".U ){
} .elsewhen( io.lvds.addrw === "h131".U ){
syncPoint := Cat( syncPoint(63,16), io.lvds.dataw, syncPoint(7,0) )
} .elsewhen( io.lvds.addrSel === "h132".U ){
} .elsewhen( io.lvds.addrw === "h132".U ){
syncPoint := Cat( syncPoint(63,24), io.lvds.dataw, syncPoint(15,0) )
} .elsewhen( io.lvds.addrSel === "h133".U ){
} .elsewhen( io.lvds.addrw === "h133".U ){
syncPoint := Cat( syncPoint(63,32), io.lvds.dataw, syncPoint(23,0) )
} .elsewhen( io.lvds.addrSel === "h134".U ){
} .elsewhen( io.lvds.addrw === "h134".U ){
syncPoint := Cat( syncPoint(63,40), io.lvds.dataw, syncPoint(31,0) )
} .elsewhen( io.lvds.addrSel === "h135".U ){
} .elsewhen( io.lvds.addrw === "h135".U ){
syncPoint := Cat( syncPoint(63,48), io.lvds.dataw, syncPoint(39,0) )
} .elsewhen( io.lvds.addrSel === "h136".U ){
} .elsewhen( io.lvds.addrw === "h136".U ){
syncPoint := Cat( syncPoint(63,56), io.lvds.dataw, syncPoint(47,0) )
} .elsewhen( io.lvds.addrSel === "h137".U ){
} .elsewhen( io.lvds.addrw === "h137".U ){
syncPoint := Cat( io.lvds.dataw, syncPoint(55,0) )
}
.elsewhen( io.lvds.addrSel === "h138".U ){
.elsewhen( io.lvds.addrw === "h138".U ){
syncPeroid := Cat( syncPeroid(31,8), io.lvds.dataw )
} .elsewhen( io.lvds.addrSel === "h139".U ){
} .elsewhen( io.lvds.addrw === "h139".U ){
syncPeroid := Cat( syncPeroid(31,16), io.lvds.dataw, syncPeroid(7,0) )
} .elsewhen( io.lvds.addrSel === "h13a".U ){
} .elsewhen( io.lvds.addrw === "h13a".U ){
syncPeroid := Cat( syncPeroid(31,24), io.lvds.dataw, syncPeroid(15,0) )
} .elsewhen( io.lvds.addrSel === "h13b".U ){
} .elsewhen( io.lvds.addrw === "h13b".U ){
syncPeroid := Cat( io.lvds.dataw, syncPeroid(23,0) )
}
for( i <- 1 until 4 ){
when( io.lvds.addrSel === ("h13c".U + (4*(i-1)).U) ){
when( io.lvds.addrw === ("h13c".U + (4*(i-1)).U) ){
syncOffset(i) := Cat( syncOffset(i)(31,8), io.lvds.dataw )
} .elsewhen( io.lvds.addrSel === ("h13d".U + (4*(i-1)).U) ){
} .elsewhen( io.lvds.addrw === ("h13d".U + (4*(i-1)).U) ){
syncOffset(i) := Cat( syncOffset(i)(31,16), io.lvds.dataw, syncOffset(i)(7,0) )
} .elsewhen( io.lvds.addrSel === ("h13e".U + (4*(i-1)).U) ){
} .elsewhen( io.lvds.addrw === ("h13e".U + (4*(i-1)).U) ){
syncOffset(i) := Cat( syncOffset(i)(31,24), io.lvds.dataw, syncOffset(i)(15,0) )
} .elsewhen( io.lvds.addrSel === ("h13f".U + (4*(i-1)).U) ){
} .elsewhen( io.lvds.addrw === ("h13f".U + (4*(i-1)).U) ){
syncOffset(i) := Cat( io.lvds.dataw, syncOffset(i)(23,0) )
}
}
@@ -662,10 +663,10 @@ trait InterfaceSync{ this: InterfaceBase =>
cReg.mstDeltaTime := io.mstDeltaTime
// Cat(
//RegEnable( dataw, 0.U, isEnW & addrSel === "h1d3".U ),
//RegEnable( dataw, 0.U, isEnW & addrSel === "h1d2".U ),
//RegEnable( dataw, 0.U, isEnW & addrSel === "h1d1".U ),
//RegEnable( dataw, 0.U, isEnW & addrSel === "h1d0".U ),
//RegEnable( dataw, 0.U, isEnW & addrw === "h1d3".U ),
//RegEnable( dataw, 0.U, isEnW & addrw === "h1d2".U ),
//RegEnable( dataw, 0.U, isEnW & addrw === "h1d1".U ),
//RegEnable( dataw, 0.U, isEnW & addrw === "h1d0".U ),
// )
// sReg.mstTimeStamp := io.mstTimeStamp
@@ -683,7 +684,7 @@ trait InterfaceSync{ this: InterfaceBase =>
syncPoint := syncPoint + cReg.syncPeroid
} .elsewhen( ~sReg.syncCfg(4+0) & syncResetCnt(0) === sReg.syncWidth(0) ){
syncSign(0) := false.B
} .elsewhen( sReg.syncCfg(4+0) & isEnW & addrSel === "h122".U ){
} .elsewhen( sReg.syncCfg(4+0) & isEnW & addrw === "h122".U ){
syncSign(0) := false.B
}
@@ -699,7 +700,7 @@ trait InterfaceSync{ this: InterfaceBase =>
syncSign(i) := true.B
} .elsewhen( ~sReg.syncCfg(4+i) & syncResetCnt(i) === sReg.syncWidth(i) ){
syncSign(i) := false.B
} .elsewhen( sReg.syncCfg(4+i) & isEnW & addrSel === ("h122".U + (2*i).U) ){
} .elsewhen( sReg.syncCfg(4+i) & isEnW & addrw === ("h122".U + (2*i).U) ){
syncSign(i) := false.B
}
@@ -737,7 +738,7 @@ with InterfaceSync
io.txReq.bits.txSM := mReg.txSM
io.txReq.bits.rxSM := mReg.rxSM
// io.txReq.bits.txLength := //mReg.txLength
io.txReq.valid := isEnW & addrSel === "h20".U & dataw.extract(0) === "b1".U //& mReg.txLength =/= 0.U
io.txReq.valid := isEnW & addrw === "h20".U & dataw.extract(0) === "b1".U //& mReg.txLength =/= 0.U