At 21:41 2001-05-22, you wrote: >I found lots of documentation on the B_CALL stuff, like ChkFindSym >GetVar etc but is there any documentation that describes (in English >preferably) commands like LDIR, EX, EI, DI, and other "opcodes", I >guess they're called. Thanks in advance! >-Tom Lutz >caffeine43@netzero.net on 05/22/2001 There are plenty in http://www.ticalc.org/pub/text/z80/ ///Olle