From: utzoo!decvax!harpo!npois!ucbvax!C70:info-cpm Newsgroups: fa.info-cpm Title: Alleged DDT bug... Article-I.D.: ucb.1306 Posted: Wed Jun 9 00:27:26 1982 Received: Wed Jun 9 05:23:02 1982 >From POURNE@Mit-Mc Wed Jun 9 00:26:53 1982 For some months we had a gremlin here; sometimes, not too often, when accessing files longer than 16K on CP/M, the system would simply get lost and wander back to the monitor. Larry Niven and I have identical systems. Tony Pietsch simply swapped Z-80 chips between my machine and Larry's. Both have worked perfectly ever since, a matter of about 3.5 years since we opened the cabinets last. Thus I believe that your problem went away when you swapped chips...