TAP Controller

This project contains a VHDL-based JTAG TAP Master controller. This controller can be synthesized and implemented in an FPGA and generate the necessary signals to interrogate a Microcontroller or other FPGA via its JTAG signals.

The goal is to provide an AXI compatible interface that would allow easy integration with a host, for example in a Zynq-7000.

This project uses OSVVM as a verification framework.

Setup

Install ghdl >= 3.0.0:

$> sudo snap install ghdl

Install dependencies for OSVVM:

$> sudo apt install tcl tcllib rlwrap

Setup submodules

$> git submodule update --init

Run Test Benches

$> ./run_tests.tclsh

This should run to completion and generate several files in the root directory:

1. TAPController_RunTest.html - This is the main browser viewable report.
   1. There will also be an *.xml and *.yml variant.
2. reports - More test suite specific HTMl reports.
3. results - Simulation run logs.
4. logs - Build logs
5. VHDL_LIBS - directory where the GHDL compiled libraries are kept.

Synthesis

@TODO - Xilinx Demo Project

@TODO - Xilinx Synthesis Report & Resource Utilization.