How to design, build & program your own working computer system

Cover
Contents
Introduction
1 A Home-Built Computer—The Basic Approach
	Central Processor Selection
	The Structure of the SC/MP
		The Program Counter
		The Register Stak
		Instruction Register: Decoding
		The Accumulator
		Operator Controllable Registers
	The External Buses of the SC/MP
		The Address Bus
		The Data Bus
		The Control Bus
		The Power Bus
		Bus Drive Capabillity
	The Complete SC/MP Block Diagram
	Memory
	Addressing & Memory Organization
	Timing Signals in the SC/MP
	The SC/MP Instruction Set
	Notes on the Instruction Set
	Learning to Program
	Elements of Machine Language Programming
	Mnemonic Programming
	Some Programming Hints
	Notes on Data Form
2 Main-Frame Construction: Peripherals & Input/Output Programming
	Console Construction
	Connector Mounting
	Power Supply
		The 5-Volt Supplies
		The 5-Volt Supply
	The Small Computer I/O Problem
	Elementary Human Oriented I/O Devices
	Control Panel Design
	Alternate Lights & Switches
	Printers & Keyboards
	Typewriters as I/O Devices
	Elements of Teleprinter Operation
	Interfacing the Teletype & Computer
	Paper Tape for the Computer
	Optical Readers
	Magnetic Tape Records
		Cassette Recording
		Cartridge Recording
		Practical Notes on Tape Recorders
	Optical Readout - The TVT
	Light Pens
	Other I/O Devices
	I/O Control & Operation
		Relative Speed
		Polls, Interrupts & Flag Pulsing
	Microprogramming for the I/O Device
	I/O Programming for SC/MP
3 The Central Processor: Address Programming
	The SC/MP Chip
	Circuit Design
	Alternate Data & Address Bus Buffering
	System Bus Structure
	Alternate Bus Structure
	Keeping Track of Bus Data
	Construction Hints
	Securing Alignment of the Board Foil
	Wire-Wrap Construction
	CPU Board Layout & Construction
		Bench Checkout
		In Case of Trouble
	Programming Techniques:
		Addressing
		Creation of a Loop Counter
		Subroutine Call & Return
		Stack Programming
4 The Control Panel & First System Test: The Operating System
	Indicator Functions
	Input Provisions
	Panel Layout
	Control Panel Circuits
		Data Input Circuits
		The Latch-Decode Circuit
		The Single-Step Circuits
	Construction
	Preliminary Test
	First System Checkout
	A Testing Hint
	Program Training
	The Operating System
	Major Elements of an Operating System
	Operating System Elements
5 The Read/Write Memory Board: Building Your Operating System
	Memory Needs
	Addressing Memory
	Ram Selection Considerations
	Design Considerations
	Board Construction
	Preinstallation Check
	Final Checkout & Program Training
	Contiol Panel Modification of Memory I/O 1
	Typical Operating System Programs
	Your Small Computer Operating System
6 A Serial I/O Board: Building the Operating System
	CPU to Teleprinter Converter
	Teleprinter to CPU Converter
	Signal Generation for the Tape Recorder
	Frequency-Shift Keyer Generator
	Frequency-Shift Keying Demodulator
	Teleprinter & Tape Recorder Connections
	Board Layout & Construction
	Board Checkout
	System Checkout
	Programming I/O Operations
	Formats for Teleprinter Signals
	RF Interference
	Programming Note
	Programming Practice
	Building the Operating System
	Startup-Bootstrap Loaders
	Debugging the Operating System
	System Control Programming
	Building the Library
	The Advanced System
	Further Extension
	The SC/MP Users Group
7 Read-Only Memory Cards: Elements of Assemblers
	ROM, PROM, CROM & EPROM
	Elements of a Diode Crom
	Layout & Construction
	Components for the ROM Board
	Board Checkout
	Programming the CROM
	Elements of a Bootstrap Loader
	Other Uses of the CROM
	Boards for PROM/EPROM
	Elements of the Assembler
	Establishing Conventions
	The Forward Reference Problem
	The Symbol & Operation Tables
	Interpreter or Compiler
	Assembler Expansion
	Obtaining an Assembler
8 Expanding Your Computer
	Fast Memory Expansion
	Slow Memory Expansion
	An Interrupt Priority Board
	A Parallel To Serial Data Converter
	Parallel Operation of Teleprinter
	A Numerical Calculation Board
	A Time & Interval Board
	A Pseudorandom Generator
	Remote Communication & Interconnection
	Computer Controlled Systems
	Concluding Remarks Regarding Expansion
	Higher Level Languages: BASIC
		Tiny BASIC
		Programming With BASIC
		Notes on Tiny BASIC Translation
		Extending Tiny BASIC
How To Use The Reference and Additional Reading Sections
References
Additional Reading
Index