nexuSys V1.0 — POWERED BY THE Nigamana Engine

Eliminating the Verification Bottleneck through Deterministic Intelligence.

nexuSys by PurpleCode AI Systems is the next-generation EDA framework for RTL debugging and formal verification. Shorten your design cycle with AI agents that reason through hardware logic — deterministically.

RISC-V | ARM | custom ASIC|Verilator | Yosys | OpenRoad | CocoTb
AI agents online·Zero-retention deployment ready
TTM Reduction
Up to 40%
spec-to-sign-off loops compressed
Coverage Lift
+18 pts
directed stimulus from protocol intent
Formal Convergence
2-4x
faster proof closure in pilot flows
Flow Compatibility
Scalable stack
Verilator | Yosys | OpenRoad | CocoTb ...
01 / Problem vs Solution

Verification remains the most expensive hidden cost in silicon.

One missed protocol assumption, one unstable corner case, or one late coverage hole can cascade into a respin, a schedule slip, and millions of dollars in tape-out risk.

  • Protocol drift between specs, RTL, and implementation teams
  • Coverage holes that only surface after simulation at scale
  • CDC/RDC, power intent, and formal evidence split across tools
Verification & debug68%
Design & integration32%
The solution

nexuSys turns architecture intent into a deterministic verification loop.

nexuSys reads specs and RTL side by side, generates protocol checks and formal properties, prioritizes coverage holes, and keeps sign-off evidence auditable across Synopsys, Cadence, Siemens EDA, Verilator, and Yosys flows.

  • Spec-to-RTL alignment with cycle-accurate traces
  • Protocol verification for AXI5, CHI, PCIe, CXL, and UCIe
  • Deployment inside on-premises, air-gapped, or private VPC boundaries
02 / Platform

nexuSys — enterprise modules for the silicon design and verification lifecycle.

Drop-in orchestration across Verilator, Yosys, OpenRoad and Cocotb. Built for open and proprietary architectures across RISC-V, ARM, and custom ASICs.

spec → checks

Spec-to-RTL & Protocol Verification

Translate architecture intent into assertions, directed tests, and protocol checks across AXI5, CHI, PCIe, CXL, and UCIe.

AXI5CHIPCIeCXLUCIe
rtl → root cause

Autonomous RTL Debugging

Pinpoint latches, X-prop, CDC/RDC, and corner-case failures with cycle-accurate traces and repair candidates.

VCSXceliumQuestaVerilator
stimulus → coverage

Coverage Maximization

Synthesize directed stimulus from coverage gaps, replay evidence, and close functional, toggle, and FSM holes faster.

UVMcoveragewaveformsFSM
risk → sign-off

Pre-Tape-Out Risk Assessment

Score sign-off risk across formal, timing, power, and reset domains before foundry handoff.

UPFCPFSDCCDC/RDC
03 / Sign-Off Orchestration

Multi-agent orchestration, one deterministic verdict.

Watch Protocol Verifier, Formal BMC Agent, CDC/RDC Analyzer, Coverage Stimulus Planner, and Power-Intent Sign-Off coordinate across one design without leaving your boundary.

orchestrator: running·repairs applied: 0·passed: 0/5·open: 5
  • agent.protocolProtocol Verification
    QUEUED

    awaiting orchestrator handoff…

    24 checks
  • agent.cdcCDC/RDC Analyzer
    QUEUED

    awaiting orchestrator handoff…

    1,284 / 1,284
  • agent.formalFormal BMC Agent
    QUEUED

    awaiting orchestrator handoff…

    412 proofs ✓
  • agent.covCoverage Stimulus Planner
    QUEUED

    awaiting orchestrator handoff…

    +4.2 pts
  • agent.powerPower-Intent Sign-Off
    QUEUED

    awaiting orchestrator handoff…

    Slack met
Pre-Tape-Out Sign-Off Report
nexuSys-PENDING
SoC · RISC-V / ARM / custom ASIC
VERIFYING...
Protocol Checks
24 / 24
Formal Proofs
412 / 412
CDC/RDC Crossings
1,284 ✓
Coverage Lift
+18.4 pts
Timing Slack
+0.04 ns
Power Budget
92% used

▸ Verdict: All five nexuSys agents converged with deterministic traces. 5 findings surfaced and auto-repaired in-loop — 0 escalated to engineer. Coverage targets met, formal proofs closed, no CDC violations, timing slack positive. SoC is cleared for RTL→GDS synthesis.

signed | PurpleCode AI Systems | Nigamana Engine | purplecode.ai○ pending
04 / Engine Core

The Nigamana Engine — deterministic symbolic reasoning for silicon.

The Nigamana Engine is the proprietary reasoning core powering every nexuSys agent. It models RTL, protocol intent, and sign-off rules as first-class formal artifacts, enabling cycle-accurate inference, automated counterexample synthesis, and auditable traceability between specification and implementation.

Symbolic reasoning at cycle granularity
Bounded model checking and proof search replace statistical heuristics.
Protocol-aware counterexample analysis
Every assertion failure ships with a minimal trace and localized evidence.
Spec drift detection
Micro-architecture docs, assertions, and RTL stay aligned.
Auditable conclusions
No opaque generation. Every answer can be traced and reviewed.
Built for open and proprietary architectures

Supports RISC-V, ARM, and custom ASIC blocks inside customer-controlled on-premises, air-gapped, or private VPC workflows.

NigamanaENGINE · SYMBOLIC · SIGN-OFF
05 / Security & Deployment

Your IP. Your boundary.

No customer RTL is used for model training. No cross-tenant embeddings, no shared memory, and no public-model leakage. nexuSys is engineered for foundry and fabless security reviews from day one.

Zero-retention data flow
Customer RTL Vaultsource of truth
Isolated Workspaceon-prem | air-gap | vpc
Nigamana Enginezero-retention reasoning
Signed Reportback to your team

On-Premises Deployment

Run nexuSys inside your firewall with customer-managed keys, internal artifact storage, and direct access to RTL, waveforms, and logs.

Air-Gapped Appliance

For export-controlled and high-sensitivity programs, operate with no public internet path. Only signed reports and approved deltas cross the boundary.

Secure Private VPC

Run in a dedicated cloud tenancy or private cloud with private endpoints, tenant-isolated compute, and zero-retention policy for customer IP.

Zero-retention runtime | customer-managed keys | signed output onlyDeployment brief available under NDA

Ready to evaluate a silicon AI deployment?

Bring your architecture brief, sign-off checklist, and security requirements. We will map the path from spec to tape-out inside your preferred boundary.