40 Best Machine Code Routines for the ZX Spectrum AuthorsPeter JenningsPublicationLISTing NewsletterPub DetailsLISTing Newsletter July 1985DateJuly 1985Pages8Read the articleSee all articles from LISTing Newsletter July 1985 TagsLISTing Newsletter Book review Machine language programming TS 2068 ZX Spectrum PeoplePeter Jennings