This manual continues the set of materials started by the guidelines "Study of the architecture and command system of Intel-compatible microprocessors". These materials are used in a laboratory workshop, the purpose of which is to study the general architecture and the most important programming issues of the widespread universal microprocessors of Intel. It is assumed to work first with a specially developed training model of the microprocessor (in order to develop preliminary skills), and then with a real microprocessor (as part of a personal computer) In the first and second parts of the manual, the microprocessor commands used in the proposed cycle of laboratory work are considered. In the third part of the manual, examples of solving problems for programming are considered, provided with detailed comments