[jsd1982]

Wouldn't this make it somewhat more challenging for assemblers/compilers to emit branch instructions with target PC offsets?

For instance, the offset of an instruction two instructions away would be calculated as `lfsr(lfsr(pc))` (off-by-one bugs notwithstanding), right?

[anthk]

If the PC offsets are non-repeating, you would just create a table from a known start. Kinda like Ouruborus, or the Humming distance between vertexes in a cube without repeating.