By Dr.-Ing. Thomas Flik, Prof. Dr.-Ing. Hans Liebig (auth.)
In the previous few years, a lot 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 basic constitution. despite the fact that, the techno-logical improvement from 8-bit to 16-bit microprossors resulted in processor parts with a considerably extra advanced constitution and with an elevated performance and likewise to a rise within the method 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 foundations of computing device or ganization are handled on the part point. this is often performed through a close exam of the attribute functionali ty of microprocessors. in addition the interactions among and software program, which are average of microprocessor know-how, are brought. Interfacing concepts are one of many focal issues of those issues. This puplication is geared up as a textbook and is meant as a self-teaching direction on 16-bit microprocessors for college students of computing device technological know-how and communications, layout engineers and clients in a wide selection of technical and clinical fields. simple wisdom of boolean algebra is believed. the alternative of fabric is predicated at the 16-bit microprocessors which are at present available to buy; however, the presentation isn't guaranteed to somebody of those microprocessors.
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Additional info for 16-Bit-Microprocessor Systems: Structure, Behavior, and Programming
Rl--,'r-O-C..... 3. a) Transfer the contents of the contiguous memory cells LOCI, LOC2 and LOC3 in a memory area. whose first clement is addressed by FIELD. b) Complete the program so that the contents of the area FIELD arc then moved in RI, R2 and R3. FIELD (RO)+,LOC1 (RO)+,LOC2 (RO) ,LOC3 MOVE MOYE MOVE R3, (RO) R2,-(RO) R1,-(RO) a b • 7. Indexed addressing (X): The effective address is formed by adding the I6-bit address, contained in the second or third instruction word. to the content of the index registers (general purpose registers).
PEA computes the effective address s and writes it on the stack; LEA loads the effective address s into a register or a memory cell. The address, for example, can be used for indirect register addressing of an operand. 2). In the folIowing example, the effective address is created by means of indexed addressing. 4. s AOOBIC) AOOOIC) add binary (with carry) C. s d:=d-sl-C) . 4) describe the four basic operations, ADD and SUB can be used on binary numbers (unsigned numbers) and on two's complement numbers (signed numbers).
System mode allows more processing capabilities when compared to the user mode, like for instance the execution of privileged instructions. • The Trace bit (T), with T= 1 (trace mode), causes a program interruption (trap) at the end of the instruction execution and branches into a trace program. The trace program can be used, for example, to indicate the processor status and then to resume the interrupted program, which will be interrupted again at the next instruction execution (program test).
16-Bit-Microprocessor Systems: Structure, Behavior, and Programming by Dr.-Ing. Thomas Flik, Prof. Dr.-Ing. Hans Liebig (auth.)