从摩托罗拉HC08的转换到Microchip的汇编：快速参考

Whenmigratingassemblylanguageprogramsfrom

onefamilyofmicrocontrollerstoanother,thefirstques-

tionisalmostalways:“What’stheequivalentopcode?”

Someoperations,likeadditionandsubtraction,are

self-evidentandpracticallyuniversal.Otherinstruc-

tionsmayhavesomesubtlechangesinsyntaxorspell-

ingthatmakedirectconversionsabittrickier.

Occasionally,someinstructionssimplydon’thavea

directequivalentinthetargetset,oranequivalent

existsbutisexplainedindifferentterms.TB071ConvertingfromMotorolaHC08toMicrochipAssembler:AQuickReferenceAuthor:RodgerRichey2.BothMotorolaandMicrochipuseadatamem-orythatis8bitswide.Withtheircorearchitec-MicrochipTechnologyInc.ture,MotorolaHC08devicesarealsolimitedtoWhenmigratingassemblylanguageprogramsfrom8-bitwideprogrammemoriesaswell.Microchiponefamilyofmicrocontrollerstoanother,thefirstques-PICmicrodevices,ontheotherhand,havepro-tion