Read e-book online 16-Bit-Microprocessor Systems: Structure, Behavior, and PDF

By Dr.-Ing. Thomas Flik, Prof. Dr.-Ing. Hans Liebig (auth.)

ISBN-10: 3540151648

ISBN-13: 9783540151647

ISBN-10: 3642932851

ISBN-13: 9783642932854

In the previous couple of years, loads of books on microprocessors have seemed out there. such a lot of them originated within the context of the 4-bit and the 8-bit microprocessors and their relatively easy constitution. even if, the techno-logical improvement from 8-bit to 16-bit microprossors resulted in processor elements with a considerably extra complicated constitution and with an increased performance and likewise to a rise within the procedure architecture's complexity. This books takes this development into consideration. It examines 16-bit micro-processor structures and descrihes their constitution, their habit and their programming. the foundations of laptop or­ ganization are taken care of on the part point. this can be performed by way of a close exam of the attribute functionali­ ty of microprocessors. in addition the interactions among and software program, which are regular of microprocessor expertise, are brought. Interfacing innovations 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 computing device technology and communications, layout engineers and clients in a large choice of technical and medical fields. easy wisdom of boolean algebra is thought. the alternative of fabric is predicated at the 16-bit microprocessors which are at present in the marketplace; nonetheless, the presentation isn't really guaranteed to an individual of those microprocessors.

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Extra info for 16-Bit-Microprocessor Systems: Structure, Behavior, and Programming

Example text

The rules for symbolic programming result from the definition of an assembly language. Programs, that are written in assembly language, are called assembler programs. Assembly Language. The assembly language determines the fonnat of a program statement A statement is divided into fields with specific functions. Depending on the assembly language, the field positions within a statement are either fixed or variable. 18 shows a fixed fonnat, in which each field begins in a fixed position. In the case of variable fon;1ats, the field position has to be indicated by a specific character, for instance a space.

In assembly languages. one symbolic instruction always corresponds to one machine code instruction (l-to-l translation), which is not the case in higher level programming languages. Thus, an assembly language program is closer to the processor hardware than a FORTRAN or ALGOL program. Pseudo-Ops. 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.

Ands d and s by subtracting them without ch'lIlging the operands. TAS compares a byte operand with zero. it then innucnces the condition bits and finally set~ the operand sign bit to 1. 2). In particular. 2). owing example illustrates the effect ofCMPB. 7) generate the logic and. or and exor with the corresponding bits of the two operands, NOT complemcnts the bits of an operand (creation of the one's complement, logic operation not), The following examples contain instructions ANDB 1md OR. 7. f S vv 00 EXOR EXORB d,s exclusive or d::d exor S v v 00 NOT NOTB d not d::not d vv 00 52 ANDB RO,#$OF MASKING OF A HALF BYTE IN RO 10 1 0 1 0 o0 0 0 1 0 11 RO 1 1Mask 10 0 0 0 0 1 0 11 RO OR RO,#$004A MERGING OF TWO BYTES INTO ONE WORD 11 0 1 0 1 0 1 0: 0 0 0 0 0 0 0 0 or I =$ 4A 0 0 GOO 0 0 0 0 1 0 0 1 0 1 0 -.

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16-Bit-Microprocessor Systems: Structure, Behavior, and Programming by Dr.-Ing. Thomas Flik, Prof. Dr.-Ing. Hans Liebig (auth.)

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