“Introduction to Macro Assembler Programming” (written by Toshinori Yoshikawa, published by Gijutsu Hyoronsha, April 20, 1989) is a practical and systematic introductory book on macro assemblers, compatible with the PC-9801 series and MASM 6.0 (Microsoft Macro Assembler). The target CPUs are x86 processors such as 8086, 80286, 80386, and 80486, and the book is structured to teach assembly language programming in MS-DOS and OS/2 environments. ◎ Book Structure and Content - Chapter 1: Overview of Microprocessors: Introduction to the basic structure and instruction set of the x86 architecture. - Chapter 2: Macro Assembler Description: MASM syntax, directives, and macro definition methods. - Chapter 3: Program Creation: Writing actual assembly code, compilation, and linking procedures. - Chapter 4: Processing in OS/2: Operation and precautions for assembler programs in the OS/2 environment. - Chapter 5: Utilizing System Functions: How to use BIOS and DOS interrupts, and system calls. - Chapter 6: Program Examples: Cultivating practical skills through practical code examples. ◎ Features and Technical Points - MASM 6.0 Compatible: Specializes in the description methods using Microsoft's macro assembler. - PC-9801 Series Compatible: Optimized for the NEC PC environment, which was widely used in Japan. - OS/2 Compatible: Also covers the use of assembly in the advanced multitasking OS of the time. - Utilization of Macro Functions: Carefully explains how to use macro instructions, which are convenient for repetitive processing and templating. ◎ Recommended for: - Technicians and students interested in the x86 architecture - Those who want to learn low-level programming in legacy DOS/OS/2 environments - Those aiming to master practical assembly language using MASM - Collectors and researchers interested in software development and analysis for retro PCs and PC-9801