How to Design, Build & Program your Own Advanced Working Computer System

Description

Cover Introduction 1 Review Of The Microprocessor Field: Advanced Systems Concepts Microcomputer Trends Magnetic Disk The Importance of Hard Copy Other Major Developments Components Hardware Support Software Publishing The Build-or-Buy Decision Basic Concepts for The Advanced System Overall Approach to System Expansion Review of Original Design Boards 2 New Fast Memory Cards: Improved Construction Techniques High Capacity Board Techniques Cheap Video The TRS-80 Video System A Multiprocessor Video Technique Preliminary Design of New Memory Boards Circuit Design for the 2K Board Circuit Design for the 8K Board Board Construction Layout Soldering Etch Resist Checking the Finished Boards Bench Checks Operating Checks 3 A NIBL-Based Operating System Data Flow Routing Hardware Control Requirements OS Programs NIBL Capabilities in the Direct Execution NIBL as an Operating System Extending NIBL OS Capability NIBL and Peripheral Control Typical OS Program Features Relocating NIBL Modifying NIBL 4 ROM Cards, NIBL in ROM and NIBL Extension Circuit Design NIBL in ROM A NIBL, NIBL MOD, and EPROM Design Alternate Circuit Selection Extending Memory Address Space Using Specialized Preprogrammed ROM Building Your Library of ROM ZIBL-A NIBL Derivative NSC Tiny Basic Nonportability Problems 5 Hard-Copy Devices for I/O Hardware Character Extension Software Character Extension The Internal Computer Character Set Code Conversion Headers and Leaders Eliminating Other Baudot Machine Disadvantages Eliminating the Odor Cutting Down on Noise Pondering Size Paper Tape for Input and Slow Memory 11 Standard Output Formats Alternate Teleprinter Connections Conversion to RS-232 Signals Use of Eight-Level Teleprinters Adding Machine Printers Note on Record Permanence 1 6 A Tape Cartridge Data System and Its Controls Cartridge Tape System Decisions The Basic Record-Reproduce-Circuit Basic Control Circuits Board Construction Interconnect Cabling Tape Deck Preparation Head and Other Adjustments Tape Formatting the Tape Records Programming for Tape Operations Maintenance Alternatives to Cartridge Recording Mounting the Tape Decks 1 7 PROM Programming Review of PROM Characteristics The 2708 The 2716 Review of Programmer Design EPROM Burner Circuit Design Board Construction Modification to Computer Control Panel Board Check The PROM-Burner Program Programming the EPROM EPROM Erasing Alternate Designs Notes on OS Programming: Structured Programming 8 An Auxiliary Processor Panel and Its Programs Alternatives to Computer Math Units Basic Characteristics of Calculator Chips Computer Arithmetic Chips Obtaining Chips and Data Design of a Universal Calculator-Processor-Board 186 Circuit Design Board Construction Calculator Panel Precheck The Calculator Subpanel Subpanel Construction, Test and Installation Final Checkout Software for the Computer Panel Special Number Processor Designs 9 Using Other Microprocessors The INS-8073 Architecture The INS-8073 Instruction Set The Z80 Architecture The Z80 Instruction Set Comparison of Addressing Modes Bus Assignments and Characteristics Timing Signal Board Use of Signals Bus Assignment for Three CPU Board Designs Board Design for the 8073 A Z80 CPU Board Design Alternatives—Purchased Designs 10 Multitasking, Multiprogramming and Multiprocessing Time-Shared Systems Nomenclature and Time-Sharing System Multiprogramming and the Home Computer Multiprocessing and the Home Computer Loose Coupling Tight Coupling Shared-Resource Multiprocessing Summing Up Multiprocessing Multitask Operation and the Small Computer Interrupts Bus Control Why a Home System? Appendix SC/MP Bootstrap Loader SC/MP Subroutine Supervisor Block Transfer Hexadecimal Memory Dump Reverse Polish Tape Loader Punch Complemented Binary PROM Tape Quad Square Root Double Unsigned Multiply Fifteen-Bit Square Root SC/MP Editor PLOT SC/MP Disassembler Word Game References Index