From: utzoo!decvax!ucbvax!C70:info-cpm Newsgroups: fa.info-cpm Title: DDT bug Article-I.D.: ucb.1257 Posted: Thu Jun 3 03:55:13 1982 Received: Fri Jun 4 04:30:25 1982 >From ucivax!csuf!bruce@Ucb-C70 Thu Jun 3 03:54:58 1982 In my several years of programming experience, I think I know how the Z flag works on the Z-80. I also think I know which way a JNZ instruction is supposed to jump. Anyhow, if no one else can find the bug, I guess I have to assy that I have a garbled copy of DDT AND DCON. How they both got to be garbled in the same manner is beyond me... It seems more likely that something in my system is causing DDT to malfunction - something in the BIOS, or possibly a bad memory chip. Bruce