📌 Introduction

  • Device: Intel/Altera Cyclone IV (EP4CE22F17C6, 22K LEs)
  • Board: Terasic DE0-Nano
  • IDE: Quartus Prime Lite Edition 21.1

JTAG SCAN

jtagconfig

> 1) USB-Blaster [USB-0]
> 020F30DD   10CL025(Y|Z)/EP3C25/EP4CE22

USB driver OK JTAG chain OK 020F30DD: IDCODE

JTAG (IEEE 1149.1) make all compatible IC have a 32-bit IDCODE register.

To identify: Manufacturer, Device Part Number, Version.

EP4CE22: Cyclone IV E EP3C25: Cyclone III 10CL025(Y|Z): Cyclone 10 LP

SignalTap

SignalTap is an on-chip logic analyzer in Intel Quartus that lets you capture and view internal FPGA signals in real time through JTAG, without external probes. Unlike ModelSim, which shows simulated waveforms before hardware runs, SignalTap reveals the actual behavior inside the FPGA after configuration — perfect for debugging real hardware issues that simulation might miss.

Setup

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Data

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