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Practical Microcomputer Programming:The Z80
"This third volume of the Practical Microcomputer Program mings series is concerned with detailed assembly language program ming procedures for the 280 microcomputer manufactured by Zi log, Inc. of Cupertino, California. Its purpose is to provide the read et with the necessary information and software tools to make effec tive use of the 280. The software, an assembler and debugging mom tor, is given in full source form in appendices, and the purchaser of this book will be granted license to make copies for his personal or academic, but not commercial, use when the coupon at the back of the book is fully filled out and returned. To save the tedium of re transcribing the programs, paper tape object copies of both assem. bler and debugging monitor will be sent to the purchaser at no fur ther cost upon receipt of the filled out coupon.
From one viewpoint or another every computer design contains flaws or features which might be viewed as awkward. The 280 is no exception to this. Its weak points notwithstanding, a detached ob server must conclude that, from a programming point of view, the 280 is the most powerful eight bit microcomputer yet to appear. De signed as a superset of its popular predecessor the 8080, it offers en- hancements over the 8080 which remove almost all of the objections to the programming characteristics of the earlier machine. It has a flexible, powerful instruction set which allows it, in skilled hands, to perform tasks of any significant size and complexity in substan- tially less memory than competitive microcomputers. With a single minor exception, its binary instruction set is a superset of the 8080's, which allows software developed for the 8080 to run unchanged on the Z80, an important consideration when contemplating a ma- chine upgrade."
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