The "walking one" test, that i am familiar with, rotates a single "high bit" thru each bit position within a word and sequentially performs this operation for each memory word. It originated with "core memory" that used "write after read" cycles.

A second test we called a "Barber Pole" test would set one bit high all other low and test the entire memory array to detect tranciever and addressing (decode) "ghosting".

regards,
p