Structured Computer Organization
Preserving the same popular structure found in the previous four editions of this best-selling book, Andrew Tanenbaum teaches that a computer can be structured as a hierarchy of levels. In this book he covers them all, including the digital logic level, the microarchitecture level, the instruction set architecture level, the operating system machine level and the assembly language level.
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THE ASSEMBLY LANGUAGE LEVEL
THE DIGITAL LOGIC LEVEL
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address space ALU output arithmetic assembly language asserted Boolean buffer buses byte called cell character circuit clock contains control store conventional machine level CP/M cycle data path decoding deﬁned disk encoding EPROM example execution fetch ﬁeld ﬁle ﬁnished ﬁrst ﬁve ﬂip-ﬂops four function gates goto Hamming code hardware high-order I/O devices implement input lines instruction set integer interpreter interrupt jump latch loaded logical record low-order lshift tir main memory memory address memory word metabits Mic-l microcomputer microinstruction microprocessor microprogram NAND needed nsec number of bits opcode operand operating system output lines parameters parity bit PDP-ll pins procedure processor program counter PUSH scratchpad sector segment sequence shift shifter shown in Fig signals speciﬁed stack pointer storage subcycle tion track transmission transmitted truth table Unibus variables virtual memory write