Quantity   Component name
1 × Mercury FPGA board https://www.micro-nova.com/mercury
1 × Mercury baseboard (has 3.5mm audio in/out jacks) https://www.micro-nova.com/mercury-baseboard
1 × Any old cassette recoder / player http://www.mainbyte.com/ti99/hardware/cassette/recorder.html
2 × Stereo cables (but only mono is used)
1 × USB to UART PMOD adapter https://store.digilentinc.com/pmod-usbuart-usb-to-uart-interface/
1 × Hexagonal pencil To rewind the tape manually if need be :-)
1 × FPGA programming utility (via USB) https://www.micro-nova.com/mercury-programmer
1 × Xilinx ISE development suite V14.7 https://forums.xilinx.com/t5/Installation-and-Licensing/How-do-I-download-ISE-Webpack-14-7-for-Windows-10/m-p/1094063#M28951