Noting that Bernd's port of P4
Why did he port that? The original author already did that: Scott Franco (a.k.a. Scott Moore). Better use the source, the source and not some vague ports.
BTW: byte code is not in any way dated. It is a tool available to any modern compiler engineer.
Examples are opengl and family, Java, C# etc. It is just that Pascal happens to be one of the oldest.
Another good example is TRegExpr which is a full and fast byte code compiler for regular expressions.