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@ -20,57 +20,40 @@ class rocketProc(implicit conf: RocketConfiguration) extends Component
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val ctrl = new Control
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val ctrl = new Control
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val dpath = new Datapath
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val dpath = new Datapath
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val dtlb = new rocketTLB(DTLB_ENTRIES);
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val ptw = Vec(0) { new IOTLBPTW }
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val ptw = new rocketPTW(if (HAVE_VEC) 3 else 2)
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val arb = new HellaCacheArbiter(DCACHE_PORTS)
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val arb = new HellaCacheArbiter(DCACHE_PORTS)
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var vu: vu = null
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var vu: vu = null
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if (HAVE_VEC)
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if (HAVE_VEC)
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{
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{
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vu = new vu()
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vu = new vu()
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// cpu, vector prefetch, and vector use the DTLB
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val dtlbarb = new RRArbiter(DTLB_PORTS)({new ioDTLB_CPU_req_bundle()})
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val dtlbchosen = Reg(resetVal=Bits(DTLB_CPU,log2Up(DTLB_PORTS)))
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when( dtlb.io.cpu_req.ready && dtlbarb.io.out.valid ) { dtlbchosen := dtlbarb.io.chosen }
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// tlb respones come out a cycle later
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val vdtlb = new rocketTLB(8)
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val chosen_vec = dtlbchosen === Bits(DTLB_VEC)
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vdtlb.io.invalidate := dpath.io.ptbr_wen
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val chosen_pf = dtlbchosen === Bits(DTLB_VPF)
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vdtlb.io.status := dpath.io.ctrl.status
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val chosen_cpu = dtlbchosen === Bits(DTLB_CPU)
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ptw += vdtlb.io.ptw
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dtlbarb.io.in(DTLB_VEC) <> vu.io.vec_tlb_req
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vdtlb.io.cpu_req <> vu.io.vec_tlb_req
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vu.io.vec_tlb_resp := vdtlb.io.cpu_resp
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vu.io.vec_tlb_resp.xcpt_ld := chosen_vec && dtlb.io.cpu_resp.xcpt_ld
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vu.io.vec_tlb_resp.xcpt_st := chosen_vec && dtlb.io.cpu_resp.xcpt_st
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vu.io.vec_tlb_resp.xcpt_pf := Bool(false)
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vu.io.vec_tlb_resp.xcpt_pf := Bool(false)
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vu.io.vec_tlb_resp.miss := chosen_vec && dtlb.io.cpu_resp.miss
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vu.io.vec_tlb_resp.ppn := dtlb.io.cpu_resp.ppn
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dtlbarb.io.in(DTLB_VPF) <> vu.io.vec_pftlb_req
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val pftlb = new rocketTLB(2)
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pftlb.io.invalidate := dpath.io.ptbr_wen
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pftlb.io.status := dpath.io.ctrl.status
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pftlb.io.cpu_req <> vu.io.vec_pftlb_req
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ptw += pftlb.io.ptw
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vu.io.vec_pftlb_resp := pftlb.io.cpu_resp
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vu.io.vec_pftlb_resp.xcpt_ld := Bool(false)
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vu.io.vec_pftlb_resp.xcpt_ld := Bool(false)
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vu.io.vec_pftlb_resp.xcpt_st := Bool(false)
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vu.io.vec_pftlb_resp.xcpt_st := Bool(false)
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vu.io.vec_pftlb_resp.xcpt_pf := chosen_pf && dtlb.io.cpu_resp.xcpt_pf
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vu.io.vec_pftlb_resp.miss := chosen_pf && dtlb.io.cpu_resp.miss
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vu.io.vec_pftlb_resp.ppn := dtlb.io.cpu_resp.ppn
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// connect DTLB to ctrl+dpath
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dtlbarb.io.in(DTLB_CPU).valid := ctrl.io.dtlb_val
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dtlbarb.io.in(DTLB_CPU).bits.kill := ctrl.io.dtlb_kill
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dtlbarb.io.in(DTLB_CPU).bits.cmd := ctrl.io.dmem.req.bits.cmd
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dtlbarb.io.in(DTLB_CPU).bits.asid := UFix(0)
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dtlbarb.io.in(DTLB_CPU).bits.vpn := dpath.io.dtlb.vpn
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ctrl.io.dtlb_rdy := dtlbarb.io.in(DTLB_CPU).ready
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ctrl.io.xcpt_dtlb_ld := chosen_cpu && dtlb.io.cpu_resp.xcpt_ld
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ctrl.io.xcpt_dtlb_st := chosen_cpu && dtlb.io.cpu_resp.xcpt_st
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ctrl.io.dtlb_miss := chosen_cpu && dtlb.io.cpu_resp.miss
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dtlb.io.cpu_req <> dtlbarb.io.out
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}
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}
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else
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{
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// connect DTLB to ctrl+dpath
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// connect DTLB to ctrl+dpath
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val dtlb = new rocketTLB(DTLB_ENTRIES)
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dtlb.io.invalidate := dpath.io.ptbr_wen
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dtlb.io.status := dpath.io.ctrl.status
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ptw += dtlb.io.ptw
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dtlb.io.cpu_req.valid := ctrl.io.dtlb_val
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dtlb.io.cpu_req.valid := ctrl.io.dtlb_val
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dtlb.io.cpu_req.bits.kill := ctrl.io.dtlb_kill
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dtlb.io.cpu_req.bits.kill := ctrl.io.dtlb_kill
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dtlb.io.cpu_req.bits.cmd := ctrl.io.dmem.req.bits.cmd
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dtlb.io.cpu_req.bits.cmd := ctrl.io.dmem.req.bits.cmd
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@ -80,44 +63,17 @@ class rocketProc(implicit conf: RocketConfiguration) extends Component
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ctrl.io.xcpt_dtlb_st := dtlb.io.cpu_resp.xcpt_st
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ctrl.io.xcpt_dtlb_st := dtlb.io.cpu_resp.xcpt_st
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ctrl.io.dtlb_rdy := dtlb.io.cpu_req.ready
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ctrl.io.dtlb_rdy := dtlb.io.cpu_req.ready
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ctrl.io.dtlb_miss := dtlb.io.cpu_resp.miss
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ctrl.io.dtlb_miss := dtlb.io.cpu_resp.miss
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}
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dtlb.io.invalidate := dpath.io.ptbr_wen
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dtlb.io.status := dpath.io.ctrl.status
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arb.io.requestor(DCACHE_CPU).req.bits.ppn := dtlb.io.cpu_resp.ppn
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arb.io.requestor(DCACHE_CPU).req.bits.ppn := dtlb.io.cpu_resp.ppn
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ctrl.io.dmem.req.ready := dtlb.io.cpu_req.ready && arb.io.requestor(DCACHE_CPU).req.ready
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// connect page table walker to TLBs, page table base register (from PCR)
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ctrl.io.dpath <> dpath.io.ctrl
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// and D$ arbiter (selects between requests from pipeline and PTW, PTW has priority)
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dpath.io.host <> io.host
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ptw.io.requestor(0) <> io.imem.ptw
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ptw.io.requestor(1) <> dtlb.io.ptw
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ptw.io.ptbr := dpath.io.ptbr;
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arb.io.requestor(DCACHE_PTW) <> ptw.io.mem
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arb.io.mem <> io.dmem
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ctrl.io.dpath <> dpath.io.ctrl;
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dpath.io.host <> io.host;
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// FIXME: try to make this more compact
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// connect I$
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ctrl.io.imem <> io.imem
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ctrl.io.imem <> io.imem
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dpath.io.imem <> io.imem
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dpath.io.imem <> io.imem
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// connect arbiter to ctrl+dpath+DTLB
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ctrl.io.dmem <> arb.io.requestor(DCACHE_CPU)
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//TODO: views on nested bundles?
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dpath.io.dmem <> arb.io.requestor(DCACHE_CPU)
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arb.io.requestor(DCACHE_CPU).resp <> ctrl.io.dmem.resp
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arb.io.requestor(DCACHE_CPU).xcpt <> ctrl.io.dmem.xcpt
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arb.io.requestor(DCACHE_CPU).resp <> dpath.io.dmem.resp
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arb.io.requestor(DCACHE_CPU).req.valid := ctrl.io.dmem.req.valid
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ctrl.io.dmem.req.ready := arb.io.requestor(DCACHE_CPU).req.ready
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arb.io.requestor(DCACHE_CPU).req.bits.kill := ctrl.io.dmem.req.bits.kill
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arb.io.requestor(DCACHE_CPU).req.bits.cmd := ctrl.io.dmem.req.bits.cmd
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arb.io.requestor(DCACHE_CPU).req.bits.typ := ctrl.io.dmem.req.bits.typ
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arb.io.requestor(DCACHE_CPU).req.bits.idx := dpath.io.dmem.req.bits.idx
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arb.io.requestor(DCACHE_CPU).req.bits.tag := dpath.io.dmem.req.bits.tag
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arb.io.requestor(DCACHE_CPU).req.bits.data := dpath.io.dmem.req.bits.data
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var fpu: rocketFPU = null
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var fpu: rocketFPU = null
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if (HAVE_FPU)
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if (HAVE_FPU)
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@ -132,7 +88,7 @@ class rocketProc(implicit conf: RocketConfiguration) extends Component
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dpath.io.vec_ctrl <> ctrl.io.vec_dpath
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dpath.io.vec_ctrl <> ctrl.io.vec_dpath
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// hooking up vector I$
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// hooking up vector I$
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ptw.io.requestor(2) <> io.vimem.ptw
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ptw += io.vimem.ptw
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io.vimem.req.bits.status := dpath.io.ctrl.status
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io.vimem.req.bits.status := dpath.io.ctrl.status
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io.vimem.req.bits.pc := vu.io.imem_req.bits
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io.vimem.req.bits.pc := vu.io.imem_req.bits
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io.vimem.req.valid := vu.io.imem_req.valid
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io.vimem.req.valid := vu.io.imem_req.valid
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@ -232,4 +188,12 @@ class rocketProc(implicit conf: RocketConfiguration) extends Component
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fpu.io.dfma.valid := Bool(false)
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fpu.io.dfma.valid := Bool(false)
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}
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}
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}
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}
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ptw += io.imem.ptw
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val thePTW = new PTW(ptw.length)
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thePTW.io.requestor <> ptw
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thePTW.io.ptbr := dpath.io.ptbr;
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arb.io.requestor(DCACHE_PTW) <> thePTW.io.mem
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arb.io.mem <> io.dmem
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}
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}
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