By Dr.-Ing. Thomas Flik, Prof. Dr.-Ing. Hans Liebig (auth.)
In the previous couple of years, loads of books on microprocessors have seemed out there. so much of them originated within the context of the 4-bit and the 8-bit microprocessors and their relatively basic constitution. notwithstanding, the techno-logical improvement from 8-bit to 16-bit microprossors ended in processor parts with a considerably extra complicated constitution and with an multiplied performance and in addition to a rise within the process architecture's complexity. This books takes this development into consideration. It examines 16-bit micro-processor platforms and descrihes their constitution, their habit and their programming. the rules of computing device or ganization are handled on the part point. this is often performed via an in depth exam of the attribute functionali ty of microprocessors. moreover the interactions among and software program, which are common of microprocessor expertise, are brought. Interfacing suggestions are one of many focal issues of those concerns. This puplication is prepared as a textbook and is meant as a self-teaching path on 16-bit microprocessors for college students of laptop technological know-how and communications, layout engineers and clients in a wide selection of technical and clinical fields. simple wisdom of boolean algebra is thought. the alternative of fabric is predicated at the 16-bit microprocessors which are at the moment in the marketplace; nonetheless, the presentation isn't really sure to a person of those microprocessors.
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Extra resources for 16-Bit-Microprocessor Systems: Structure, Behavior, and Programming
17 shows the final machine code together with the memory addresses of the single machine code words, where the binary number representation of the memory addresses was reduced from 16 to 5 bits. The program code uses cells 0 through 22 and the data area cells 23 through 25. Both operands ZERO and ONE are coded as binary numbers; the content of the memory word TIMEC is not yet defined before t~e execution of the program, which is indicated by the broken line. The mnemonic or the processor external address symbol is given for each instruction word as an orientation aid.
Only the modification of the source address is indicated, while the destination address is always R1. The addressing modes could be used the same way for destination addresses. The direct operand addressing is the exception, since direct operands can only be data sources. When addressing words and double words, it is important for the effective address to be an even number. ]n the illustrations, single arrows indicate the operand transfer, and arrows with a dot indicate data addressing. 1. Register addressing (R): The effective address is in the REG field; the operand is in the register file.
In addition to instructions, our program example also includes the definition of operands which are assigned to memory cells. These operands can even be given a value before the beginning of the execution. For these or similar situations, the assembly language contains pseudoops (pseudo instructions) that can be inserted in the symbolic program as program statements. Contrary to machine instructions, pseudo-ops do not always generate binary code; they are used to control the translation process and to produce constants.
16-Bit-Microprocessor Systems: Structure, Behavior, and Programming by Dr.-Ing. Thomas Flik, Prof. Dr.-Ing. Hans Liebig (auth.)