Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!brutus.cs.uiuc.edu!apple!bionet!ames!pacbell!att!cbnewsd!bird From: bird@cbnewsd.ATT.COM (j.l.walters) Newsgroups: comp.sys.apple Subject: Re: WDM mnemonic Message-ID: <12998@cbnewsd.ATT.COM> Date: 1 Feb 90 13:53:59 GMT References: <5424@hydra.gatech.EDU> Organization: AT&T Bell Laboratories Lines: 14 From article <5424@hydra.gatech.EDU>, by ccastbs@prism.gatech.EDU (Shannon Bell): > Could someone please tell me what WDM is supposed to do? It's > opcode 42,... It stands for William D. Mensch, the designer of the 65816. As I remember, it is reserved as an expansion instruction of some sort. (Math coprocessor?) The true answer is in the Lichty & Eyes book on programming the 65816. -- Joe Walters att!ihlpf!bird IH 2A-227 (708) 979-9527