[1] https://github.com/lowRISC/ibex

[2] https://ibex-core.readthedocs.io/en/latest/03_reference/instruction_fetch.html

[3] https://github.com/pulp-platform/apb_uart_sv

[4] https://github.com/pulp-platform/apb_spi_master

[5] https://github.com/lowRISC/ibex/tree/master/examples/simple_system

[6] https://github.com/arduino-libraries/LiquidCrystal