Answered: How many bits is the OPCODE and what is…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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How many bits is the OPCODE and what is the assembly language mneumonic for each of the following Pep/9 instruction specifiers (which are given in hexadecimal)?

(use numbers only for the bits and UPPERCASE letters for the mneumonics - do not include the addressing mode for example ADDA and not ADDA 0xFFFF,d)

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Answer:

Hexadecimal	Bits	Mnemonics	Explanation
02	000 0010	STX	Start of text
08	000 1000	BS	Backspace
1E	001 1110	RS	Record separator
61	110 0001	a	character
FF	-	-	-

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