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Fails with scala.NotImplementedError: an implementation is missing #456

@RossComputerGuy

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@RossComputerGuy
[info] **********************************************************************************************
[info] [Warning] Elaboration failed (0 error).
[info]           Spinal will restart with scala trace to help you to find the problem.
[info] **********************************************************************************************
[info] [Progress] at 0.592 : Elaborate components
[info] [Warning] This VexRiscv configuration is set without software ebreak instruction support. Some software may rely on it (ex: Rust). (This isn't related to JTAG ebreak)
[info] [Warning] This VexRiscv configuration is set without illegal instruction catch support. Some software may rely on it (ex: Rust)
[error] Exception in thread "main" scala.NotImplementedError: an implementation is missing
[error] 	at scala.Predef$.$qmark$qmark$qmark(Predef.scala:288)
[error] 	at spinal.lib.com.spi.ddr.SpiXdrMasterCtrl$XipBus.fromPipelinedMemoryBus(SpiXdrMasterCtrl.scala:411)
[error] 	at vexriscv.demo.Murax$$anon$4$$anon$5.<init>(Murax.scala:319)
[error] 	at vexriscv.demo.Murax$$anon$4.$anonfun$xip$2(Murax.scala:310)
[error] 	at spinal.core.ifGen$.apply(Misc.scala:533)
[error] 	at vexriscv.demo.Murax$$anon$4.<init>(Murax.scala:310)
[error] 	at vexriscv.demo.Murax.<init>(Murax.scala:222)
[error] 	at vexriscv.demo.Murax_iCE40_hx8k_breakout_board_xip$Murax_iCE40_hx8k_breakout_board_xip.<init>(Murax.scala:446)
[error] 	at vexriscv.demo.Murax_iCE40_hx8k_breakout_board_xip$.$anonfun$main$5(Murax.scala:498)
[error] 	at spinal.core.internals.PhaseCreateComponent.$anonfun$impl$319(Phase.scala:2883)
[error] 	at spinal.core.fiber.Engine$.$anonfun$create$1(AsyncCtrl.scala:173)
[error] 	at spinal.core.fiber.AsyncThread.$anonfun$jvmThread$1(AsyncThread.scala:60)
[error] 	at spinal.core.fiber.EngineContext.$anonfun$newJvmThread$1(AsyncCtrl.scala:39)
[error] 	at spinal.sim.JvmThread.run(SimManager.scala:51)
[error] nonzero exit code returned from runner: 1
[error] (Compile / runMain) nonzero exit code returned from runner: 1
[error] Total time: 1 s, completed 2025/10/19 14:33:43
make: *** [Makefile:9: ../../../Murax_iCE40_hx8k_breakout_board_xip.v] エラー 1

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