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title: "Book Review: Introduction to 2068 Machine Code"
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excerpt: "Review of Lloyd Dreger's 213+ page self-study manual for Z80 assembly language on the TS2068. Covers computer number systems, Z80 code, internal machine code, and peripherals. Reviewer notes addresses are primarily in decimal rather than hexadecimal and considers this a good reference work. Highly recommended."
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---

# Book Review: Introduction to 2068 Machine Code

Review of [Lloyd Dreger’s](http://localhost/indiv/lloyd-dreger/) 213+ page self-study manual for Z80 assembly language on the TS2068. Covers computer number systems, Z80 code, internal machine code, and peripherals. Reviewer notes addresses are primarily in decimal rather than hexadecimal and considers this a good reference work. Highly recommended.