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Review of Lloyd Dreger’s 248+ page commented TS2068 ROM disassembly with assembly language notes and cross-references to the Sinclair Spectrum. Reviewer notes addresses are in decimal with Z80 code in hexadecimal, and that the 9-page Spectrum/Timex cross-reference table provides both decimal and hex addresses. Serious students still need Dr. Logan’s Spectrum ROM Disassembly for program description material.