0hmX/am3352

scripts/experiment-ddr-e2-via-relocation.ts

/** Bounded E2/C1 co-design experiment against the accepted ordered-DM board. */
import{readFileSync,writeFileSync,mkdirSync}from'node:fs'
import{resolve}from'node:path'
import{objectHash}from'./improve-ddr-a9-power-launches'
import{verifyDdrSystemCopper}from'./check-ddr-system-copper'
import{sharedViaApproaches}from'./plan-ddr-ram-power-via-reuse'
const dir=resolve(process.argv[2]??'dist/ddr-dm0-ordered-host'),out=resolve('dist/ddr-e2-relocation-experiment'),read=(n:string)=>JSON.parse(readFileSync(`${dir}/${n}`,'utf8')),parent=read('candidate.circuit.json'),audit=read('ram-power-launch-audit.json'),report=read('report.json'),attempts:any[]=[],hits:any[]=[],witnesses:any[]=[],started=Date.now()
if(audit.launchQualified!==56)throw Error('Expected actual56power parent')
for(const byte of[0,1]){
 const row=(term:string)=>audit.rows.find((r:any)=>r.byte===byte&&r.terminal===term),trace=(r:any)=>parent.find((e:any)=>e.type==='pcb_trace'&&e.pcb_trace_id===r.pcbTraceId),e2=trace(row('VDDQ_E2')),c1=trace(row('VDDQ_C1')),d1=trace(row('VSSQ_D1')),target=row('VSS_F2').connectionVia,old=e2.route[2],rendered=parent.filter((e:any)=>e.type==='pcb_via'&&e.pcb_trace_id===e2.pcb_trace_id),pad=parent.find((e:any)=>e.type==='pcb_smtpad'&&e.pcb_smtpad_id===row('VDDQ_E2').padId),users=audit.rows.filter((r:any)=>r.connectionVia&&Math.hypot(r.connectionVia.x-old.x,r.connectionVia.y-old.y)<1e-7)
 if(rendered.length!==1||users.length!==2||!users.some((r:any)=>r.terminal==='VDDQ_C1'))throw Error('Expected exactE2/C1sharedbarrel')
 witnesses.push({byte,e2,c1,d1,rendered:rendered[0],beforeHashes:{e2:objectHash(e2),c1:objectHash(c1),d1:objectHash(d1),rendered:objectHash(rendered[0])},retainedVrefPad:parent.find((e:any)=>e.type==='pcb_smtpad'&&e.pcb_smtpad_id===(byte?'pcb_smtpad_570':'pcb_smtpad_492'))})
 position:for(const dx of[-.1,-.15,-.2,-.25,-.3,-.35,-.4])for(const dy of[-.3,-.2,-.1,0,.1,.2,.3]){
  if(Date.now()-started>55000)break position
  const v={x:old.x+dx,y:old.y+dy},padHoleGap=Math.hypot(v.x-pad.x,v.y-pad.y)-.127-pad.radius
  if(padHoleGap<.1016-1e-8){attempts.push({byte,dx,dy,status:'own-pad-drill-gap',padHoleGap});continue}
  const viaGap=Math.min(...parent.filter((e:any)=>e.type==='pcb_via'&&!rendered.includes(e)).map((e:any)=>Math.hypot(v.x-e.x,v.y-e.y)-.2286-e.outer_diameter/2))
  if(viaGap<.1016-1e-8){attempts.push({byte,dx,dy,status:'other-barrel-gap',viaGap});continue}
  const e2Routes=sharedViaApproaches(e2.route[0],v),c1Routes=sharedViaApproaches(c1.route[0],v)
  if(!c1Routes.length){attempts.push({byte,dx,dy,status:'C1-exceeds1.524mm'});continue}
  for(const er of e2Routes)for(const cr of c1Routes){
   const moved={...e2,route:[...er,{...old,...v}]},shared={...c1,route:cr},newRendered={...rendered[0],...v},fixed=[...parent.filter((e:any)=>e.type!=='pcb_copper_pour'&&e!==e2&&e!==c1&&e!==d1&&!rendered.includes(e)),moved,shared,newRendered],r=verifyDdrSystemCopper(fixed,[moved,shared],[],{},0)
   if(r.errors.length||r.violations.length||!r.angles.valid||r.joinedBends.length){attempts.push({byte,dx,dy,status:'relocation-copper-blocked',padHoleGap,viaGap,errors:r.errors,blockers:r.violations.map((w:any)=>({layer:w.layer,gapMm:w.gapMm,a:w.aShape.traceId??w.aShape.join,b:w.bShape.traceId??w.bShape.join})),joined:r.joinedBends});continue}
   const a=d1.route[0],ex=target.x-a.x,ey=target.y-a.y,vertical=ey-Math.abs(ex)
   for(let k=0;k<=20;k++){
    const lead=vertical*k/20,points=[a,{x:a.x,y:a.y+lead},{x:target.x,y:a.y+lead+Math.abs(ex)},target],route:any[]=[a]
    for(const p of points.slice(1))if(Math.hypot(p.x-route.at(-1).x,p.y-route.at(-1).y)>1e-8)route.push({route_type:'wire',x:p.x,y:p.y,width:.12,layer:'top'})
    const added={...d1,route},check=verifyDdrSystemCopper(fixed,[moved,shared,added],[],{},0),pass=!check.errors.length&&!check.violations.length&&check.angles.valid&&!check.joinedBends.length
    attempts.push({byte,dx,dy,lead,status:pass?'conductor-clear-pending-planes':'D1-approach-blocked',padHoleGap,viaGap,minClearanceMm:check.minClearanceMm,blockers:check.violations.map((w:any)=>({layer:w.layer,gapMm:w.gapMm,a:w.aShape.traceId??w.aShape.join,b:w.bShape.traceId??w.bShape.join})),joined:check.joinedBends})
    if(pass){hits.push({byte,afterE2:moved,afterC1:shared,afterRendered:newRendered,afterD1:added,conductorReport:check});break position}
   }
  }
 }
}
mkdirSync(out,{recursive:true});writeFileSync(`${out}/report.json`,JSON.stringify({captureHash:report.captureHash,parentDirectory:dir,parentCircuitSha256:objectHash(parent),elapsedMs:Date.now()-started,witnesses,attempts,hits,scope:'Read-only E2opposite-rail barrel relocation plus both existing E2/C1launch replacements, retainingVREFDQpad. All conductor layers checked; any hit requires newplanes/contact/topology audit before acceptance. No canonical changes.'},null,2));console.log(JSON.stringify({elapsedMs:Date.now()-started,attempts:attempts.length,hits:hits.map(h=>({byte:h.byte,via:h.afterRendered}))}))