RPI had the usual variations to these gag opcode lists floating around too. I don't know where I put my hardcopy, but the ones that stick in my mind are: ECB Eject chad box EDI Eject disk immediate HCF Halt and Catch Fire (this was already posted here, but I liked the fact that the RPI list emphasized the fact that it requires privilege) I wish I knew where that printout was (IIRC the file was named ACM.:WORDS and was cobbled together from various scraps, probably mostly from the outside world), there was a lot of other nice stuff, of interest only to "power" nerds. John Wilson D Bit