For the 2013 edition of "Project Oberon" book, Niklaus Wirth rewrote the Oberon system for the custom RISC CPU, which he designed in Verilog language. It seems

For the 2013 edition of "Project Oberon" book, Niklaus Wirth rewrote the Oberon system for the custom RISC CPU, which he designed in Verilog language. It seems like he wasn't a fan of it, so he created Lola-2 in 2014 and wrote a transpiler to Verilog: "Now textual descriptions of hardware are common place, the preferred languages being Verilog and VHDL. With the view of a teacher, I have the same grave objections against them as for the wide-spread programming languages: they are by far too complex. Thereby they make it difficult and pitfall-prone for beginners, apart from causing headaches for teachers. I felt that Lola could play the same role for HDLs as Oberon for PLs, easing learning for beginners and relieving teachers from headaches."