That would be any CPU with word-addressing only. Which, granted, is very exotic today, but they do still exist: https://www.analog.com/en/products/adsp1802.html

That would be any CPU with word-addressing only. Which, granted, is very exotic today, but they do still exist: https://www.analog.com/en/products/adsp1802.html https://www.analog.com/en/products/adsp1802.html