User:Jnc

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Although I have a wide interest in older computers, I worked with PDP-11's extremely extensively 'back in the day', and consider them perhaps the most elegant architecture ever devised (the power and flexibility they obtained with only 16-bit wide instructions were a revelation when they first appeared), so I have focused on them.

For more about me, see my home page.

Also, I'm an admin here on the CHWiki, so if there are any admin-type tasks you need doing (e.g. deleting a page with a typo in the name; merging edit histories; etc) just drop me a line.

Prototypes

"μ"

xxx might refer to:

{disambiguation}}

Useful links

Pages I have added

Fundamentals

Architecture - Syntax - Namespace - Mapping - State machine‎ - Hierarchy - Backward compatibility‎ - Program compatible

Type - Normalization - Variable - Operand - Operator - Expression - Argument

Port - Interface - Network - Address - Address space

Magnetic field - Magnet - Electron - Electrostatic - Current - Ampere - Voltage

Conductor - Insulator - Resistor - Capacitor - Inductor - Ground - Contact - Relay

Direct current - Alternating current - Frequency - Impedance - Transformer

Circuit - Signal - Signal return - Ground return - Propagation delay‎

Noise - Interference - Crosstalk - Transmission line‎ - Terminator‎ - Single-ended signalling‎ - Differential pair - Fiber optic‎‎

Recursive acronym

Components

Semiconductor - Electronic - Vacuum tube - Diode - Transistor - Bipolar - Metal Oxide Semiconductor - Integrated circuit

Mounting box - Backplane - Connector‎ - Harness - Power harness - Bus bar‎

Power supply‎ - VI conversion - Voltage regulator‎ - Linear power supply - Switching power supply - Buck converter‎ - Amplifier

Analog - Digital - Hardware - Gate - Logic - Gate array

Gray code - Negative logic - Serial - Parallel

Encoding - Frequency Modulation‎ - Modified Frequency Modulation‎ - Non Return to Zero - Non Return to Zero Inverted - Run-length limited coding

Real-time - Synchronous - Asynchronous - Meta-stability - Synchronizer - Arbiter - Clock

Logic family - Resistor-transistor logic‎ - Diode-transistor logic‎ - Transistor-transistor logic‎ - Open collector - Emitter-coupled logic - Tri-state - 74 series

Jumper - Wire-wrap - Printed circuit board - Etch - Trace - Chip socket‎ - Surface mount - Berg connector - Flat cable - Flexprint cable‎‎ - Over the back‎

Hardware

Analog computer

Data path - Hardware port - Address bus - Data bus

Flip-flop - Register - Shift register - First-In First-Out buffer - Adder - Arithmetic logic unit‎

Central Processing Unit - Front panel‎ - Switch register‎

Instruction - Fetch - Execute - Single-step - Instruction set

Serial computer - Microcode - Firmware

Index register - General register - Pointer - Stack - Array - Random access

Program Counter - Processor Status Word - Stack Pointer - Condition codes

Pipeline - Superscalar‎ - Out-of-order execution‎‎ - Register renaming‎

Co-processor‎‎ - Floating point processor - Multi-processor - Channel - Front end

Interrupt - Interrupt vector - Trap

Memory - Main memory - Access time - Cycle time - Interleaving - Cache - Multi-port memory

Repairing un-documented MOS memory boards

Architecture

Segment - Memory management‎ - Base and bounds - Protection key‎ - Bank switching‎ - Swapping

Virtual address - Virtual memory - Page table‎ - Page fault - Single-level store

Jump - Conditional branch - Control flow - Loop - Subroutine - No-op - Halt

Object code - Absolute address - Relocatable binary

Load-store architecture - Reduced Instruction Set Computer - Complex Instruction Set Computer - Extended Arithmetic Element - Commercial Instruction Set

Bootstrap - Diagnostic - Device driver - Program compatible - Simulator - Emulator

Input/output - Peripheral - Device controller - Programmed I/O - Direct Memory Access - Bus grant - Bus grant line

Supercomputer - Mainframe - Minicomputer - Personal computer - Workstation - Microprocessor - Embedded system‎ - Motherboard‎‎

Devices

Delay line - Williams tube - Core memory - Dynamic RAM - Refresh

Secondary storage - Mass storage - Drive

Magnetic storage - Head - Drum - Disk - Fixed-head disk‎

Magnetic tape - Magnetic tape drive - Magnetic tape controller

Punched card - Paper tape - Printer - Laser printer

Terminal - Keyboard - Printing terminal - Distribution panel - Teletype - Joystick - Mouse

Data communication‎‎ - Communication link‎ - Baud rate - Modem - Half-duplex - Full-duplex

Serial line - Asynchronous serial line - Synchronous serial line - Sync character‎‎ - Universal Asynchronous Receiver/Transmitter

20mA current loop serial line interface - EIA RS-232 serial line interface - EIA RS-422 serial line interface

Display - Cathode ray tube - Raster - Video terminal - Video display - Graphics terminal

Light pen - Cursor - Graphics - Character generator - Vector graphics - Display program‎ - Bit-mapped display - Pixel

Parallel interface - SCSI - Line time clock‎ - Real-time clock‎

Software

Bit - Byte - Word - Character

Binary - One's complement‎ - Two's complement‎ - Binary-coded decimal - Bi-quinary‎ - ‎Multiple precision - Floating point

SIXBIT - ASCII - Extended Binary Coded Decimal Interchange Code - Multi-media - Font

Gray code - Parity - Checksum - Cyclic redundancy check‎ - Error-correcting code

Software - Program - Self-modifying code‎ - Pure code - Programmer - Debug

Stack frame - Call stack - Local variable - Exception - Condition handler - Unwind - Structure

Programming language - Source code - Assembly language - Macro - Scope

Debugger - Compiler - Cross-compiler - Interpreter

Subroutine package - Library - Run-time system - Run-time library‎

Parser - Garbage collection - Object-oriented‎‎

Job - Process - Thread - Task - Scheduler

Batch - Disk operating system - Single-tasking - Multi-tasking - Time-sharing - Real-time system - Virtual machine

Kernel - Microkernel - Hypervisor‎

Buffer - File - File system - Hard link - Byte stream‎ - Pipe - Flow control

User interface - Graphical user interface - Window - Command processor

Application - Editor - Text editor - Screen editor - Image editor‎ - Database

Portable - Software port - Open source

DEC hardware

DEC engineering drawing numbers - DEC part numbers

H960 rack - BA11 mounting boxes - DEC indicator panel

BA11-A mounting box - BA11-C Mounting Box - BA11-D Mounting Box - BA11-E Mounting Box - BA11-F Mounting Box - BA11-K mounting box - BA11-L mounting box

BA11-M mounting box - BA11-N mounting box - BA11-S mounting box

Remote Switching Control Bus‎ - 861 Power Controller

DEC standard power wire colour coding - DEC power distribution connectors

H720 Power Supply - H742 Power Supply - H765 Power System - H777 Power Supply‎ - DEC Power Line Monitor

DEC standard modular regulators‎ - H744 +5V Regulator - H745 -15V Regulator - H754 +20V, -5V Regulator

System Module - FLIP CHIP details - DEC card form factor - System unit - DEC edge connector contact identification - DEC alphabet

DEC asynchronous serial line pinout - VT05 Alphanumeric Display Terminal

DEC machines

List of Programmed Data Processors - PDP-4 - PDP-9 - PDP-1-X - PDP-X

Three cycle data break - MASSBUS

UNIBUS map - BC11A UNIBUS cable‎ - DB11-A Bus Repeater

DECtape - LINC tape

TU16 magtape drive - TE16 magtape drive - TS03 magtape drive

RS08 disk drive - RS64 disk drive - RS03/04 disk drive - RK02/03 disk drive - RP01 disk drive - RP02 disk drive - RP03 disk drive - RP04 disk drive - RX01/02 floppy drive

PC04/PC05 High-Speed Paper-Tape Reader/Punch

LINC - LINC-8 - PDP-8/S - PDP-8/L - PDP-8/A - PDP-12

OMNIBUS - ‎PDP-8 Memory Extension units - FPP8/A Floating Point Processor - MM8-E Memory System

RF08 disk controller - DF32 disk controller - RL8-A disk controller

PDP-6 - KA10 - KI10 - KL10 - KS10

PDP-10 memories‎‎ - MA20 core memory - MB20 core memory - MF20 MOS memory - MG20 MOS memory

MA10 core memory - MB10 core memory - MD10 core memory - ME10 core memory - MF10 core memory - MG10 core memory - MH10 core memory

DMA20 Memory Bus Adapter‎ - DIA20 IBus Adapter‎ - DTE20 Ten-Eleven Interface‎ - DA10 Twelve- and Eighteen-Bit Computer Interface

DF10 Data Channel‎ - RP10 disk controller - RH10 MASSBUS controller‎

PDP-15 - UNICHANNEL 15 System - MX15-B Memory Multiplexer

PDP-11's

PDP-11 Extended Instruction Set - FP11 floating point - FIS floating point - PDP-11 Commercial Instruction Set - PDP-11 Memory Management - PDP-11 stacks - PDP-11 family differences appendix

KA11 CPU - KY11-A Programmer's Console‎‎ - KT11-B Paging Option - KA11 changes for the KT11-B - KT11-B Technical Manual - KT11-B Major State circuitry

PDP-11/05 - PDP-11/34A - PDP-11/74

KB11-A CPU - KB11-B CPU - KB11-C CPU - KB11-D CPU - KD11-A CPU - KD11-B CPU - KD11-D CPU - KD11-E CPU - KD11-EA CPU - KD11-K CPU‎ - KD11-Z CPU

KY11 consoles - KY11-LA Operator's Console - KY11-LB Programmer's Console - KM11-A Maintenance Set - KD11-E/EA microcode

KE11-E Extended Instruction Set - KT11-C Memory Management Unit - KT11-D Memory Management Unit - KJ11-A Stack Limit Register

KE11-F Floating Instruction Set - FP11-A Floating-Point Processor - FP11-B Floating-Point Processor - FP11-C Floating-Point Processor - FP11-E Floating Point Processor - FP11-F Floating-Point Processor

KE11-A Extended Arithmetic Element - KE11-B Extended Arithmetic Element

KK11-A Cache Memory - MS11 Semiconductor Memory System - MJ11 memory system - MK11 memory system - MS11-K MOS memory

LSI-11 chip set‎‎ - LSI-11 CPUs - LSI-11 - LSI-11/2 - KEV11-B Extended Instruction Set‎ - KEV11-C Commercial Instruction Set‎ - KUV11 Writeable Control Store‎

T-11 chip

F-11 chip set - KDF11 CPUs - KDF11-U CPU - KTF11-A memory management chip - KEF11-A floating point chip - KEF11-B‎ CIS chip - FPF11 floating point processor‎ - KT24 UNIBUS map option

FPJ11 floating point accelerator - KDJ11 CPUs - KDJ11-B CPU - KDJ11-E CPU - KTJ11-B UNIBUS adapter - PDP-11/83

QBUS CPU ODT‎‎

RH70 MASSBUS controller - ‎ML11 MOS Memory System

Able ENABLE - Able UNIVERTER

PDP-11 Bootstrap Loader - PDP-11 Absolute Loader

DEC bootstrap device codes

UNIBUS

Non-Processor Request and Grant - UNIBUS parity‎ - UNIBUS Device Addresses - Floating device address space - ‎Floating device vectors

UNIBUS backplanes - DD11 backplanes - DD11-B backplane - DD11-C backplane‎ - DD11-D backplane‎ - DD11-P backplane‎

Small Peripheral Controller - Modified UNIBUS Device - Extended UNIBUS

G727 grant continuity card - G7273 grant continuity card - M105 Address Selector - UNIBUS H854 header pinout

UNIBUS memories - MM11-B core memory - MM11-C core memory - MM11-D core memory - MM11-E and MM1-F core memories - MM11-K core memory - MM11-L core memory - MM11-U core memory - MM11-W core memory - MM11-Y core memory

MS11 32KB MOS memory - MS11-L MOS memory‎‎ - MS11-M MOS memory‎‎ - MS11-P MOS memory - Extended UNIBUS memories

UNIBUS boot ROMs - BM792 ROM - BM873 ROM - M9301 ROM - M9312 ROM

RH11 MASSBUS controller

RC11 disk controller - RK11-C disk controller - RP11 disk controller - RL11 disk controller - RX11 floppy disk controller - RX211 floppy disk controller‎

TC11 DECtape controller - TM11 magtape controller - TM02 magtape controller - TM03 magtape controller

IMP11-A ARPANET interface‎‎ - ‎ANTS/ISI IMP Interface - ‎LH-DH/11 Local/Distant Host Controller - Stanford 1822 Interface - UNIBUS Experimental Ethernet interface‎ - Interlan NI1010A/NI2010A Ethernet interface

DR11 parallel interface - DR11-A General Device Interface - DR11-B parallel interface - DR11-C general device interface - DR11-K parallel interface - DR11-L general-purpose interface - DR11-M general-purpose interface

KL11 asynchronous serial line interface‎ - DL11 asynchronous serial line interface - DC11 asynchronous serial line interface - DH11 asynchronous serial line interface - DJ11 asynchronous serial line interface - DM11 asynchronous serial line interface - DHU11 asynchronous serial line interface

‎DM11-BA Modem Control Multiplexor - DM11-BB Modem Control Option - DM11 distribution panel - DF11 Communications Line Adapter

DP11-A synchronous serial line interface‎‎ - ‎DU11 synchronous serial line interface - DUP11 synchronous serial line interface - DQ11 NPR Synchronous Line Interface - ‎DV11 Communications Multiplexer

KW11-L Line Time Clock - ‎KW11-W Watchdog Timer - VT11 Graphic Display Processor - PC11 High-Speed Paper-Tape Reader/Punch Control - CR11 Controller

QBUS

QBUS backplanes - Upgrading QBUS backplanes - CD interconnect - Private Memory Interconnect

QBUS memories - PMI memories - MMV11-A - MSV11-L MOS Random-Access Memory - MSV11-P MOS Random-Access Memory - MSV11-M QBUS memory - MSV11-Q QBUS memory - MSV11-R memory module - CMV-[25]xx - CMV-[14]000 - MK8022 - National Semiconductor NS23M - National Semiconductor NS23C - Q-RAM 11

BDV11 Bus Terminator/ROM‎ - QBUS boot ROMs - DEC bootstrap device codes

DRV11 Parallel Line Unit - DRV11-B Direct Memory Access Interface - DRV11-J High-Density Parallel Interface - DRV11-WA General Purpose DMA Interface

DLV11 asynchronous serial line interface - DLV11-E asynchronous serial line interface - DLV11-F asynchronous serial line interface - DLV11-J asynchronous serial line interface - DZV11 asynchronous serial line interface - DZQ11 asynchronous serial line interface - DHV11 asynchronous serial line interface - DHQ11 asynchronous serial line interface

DMV11 Synchronous Controller - DPV11 synchronous serial line interface - DUV11 Line Interface

MLH-DH/LSI11 Multiple Channel Controller - ‎Digital ETHERNET Q-Bus Network Adapter - DIGITAL Ethernet Local-Area-Network to Q-bus Adapter

MXV11-A Multifunction Option Module - MXV11-B Multifunction Option Module

Non-DEC machines

Texas Instruments - Intel - MIPS

Systems Concepts - Able Computer - Advanced Computer Communications

Data General - Xerox - NeXT Computer, Inc

Whirlwind - UNIVAC I - Atlas - Burroughs B5000‎ - CDC 6600‎ - Honeywell 6000 series‎‎

IBM 604 - IBM 650 - IBM 700 series - IBM 7000 series - Standard Modular System‎

IBM 701 - IBM 704 - IBM 709 - IBM 7030 Stretch - IBM 7070 - IBM 7090 - IBM 7094

Data General Nova 3

Xerox Alto - Alto-1822 Interface - CADR - IBM PC‎ - IBM-compatible PC

Lear Siegler ADM-3A - Term-Mite ST Smart Terminal

Intel 8085 - Intel x86 - Intel 80486‎ - Intel Pentium

Real mode‎ - Protected mode‎ - Triple fault

Motorola M68000 Family - Motorola MC68000 - Motorola MC68030 - Motorola MC68040 - Motorola MC68060

National Semiconductor NS405 and NS455 Terminal Management Processor

Extended Industry Standard Architecture - Micro Channel architecture - Peripheral Component Interconnect

Software systems

Ersatz-11 - Bochs - PDP11GUI

Compatible Time-Sharing System - OS/360 - TOPS-10 - TENEX

ELF operating system - MOS operating system

LSX - MINI-UNIX - CB-UNIX - PWB/UNIX - ‎USG UNIX - 2.10BSD - 2.11BSD - UNIX file system - BSD Fast File System

UNIX V6 internals - UNIX V6 memory layout - UNIX V6 dump analysis‎‎ - Installing UNIX Sixth Edition - Upgrading UNIX Sixth Edition - Running UNIX V6 on an -11/23 - Installing UNIX Sixth Edition on Ersatz-11

Running an LSI-11 from UNIX V6 - Installing Unix Seventh Edition - PDP-11 C stack operation

PLATO - XXDP diagnostic package - MACRO-11

ALGOL - BCPL - B programming language - DIBOL - Typesetter C - Java

Hypertext - Hypertext Markup Language‎‎

Video game - Terminal emulator

Hello, world - Vi editor

Networking

Communication network - Data network - Circuit-switching - Physical network - Network interface

Wide area network‎ - Local area network‎ - Carrier-Sense Multiple Access with Collision Detection‎‎

Switching node - Host - Client - Server

Routing architecture‎ - Path selection‎‎ - Routing table‎ - Routing loop - Link state - Routing protocol‎‎

Packet - Datagram - Packet switch - Internetwork - Router - Big-endian - Little-endian

Protocol - Protocol suite - Internetworking layer - Reliable byte stream‎ - End to end

Networking port - Connection - Sequence number‎ - Acknowledgement - Timeout - Retransmission

CYCLADES - International Network Working Group - Internet Engineering Task Force‎

1822 interface - Host-to-IMP Protocol‎ - ‎Terminal Interface Processor - Terminal Interface Unit - Port Expander

Digital Data Communications Message Protocol - Packet Radio Network - Address Resolution Protocol

Internet - Internet Protocol - User Datagram Protocol‎ - Transmission Control Protocol - Domain Name System

Interior gateway protocol‎ - Routing Information Protocol‎ - Open Shortest Path First‎‎ - Intermediate System to Intermediate System‎

Exterior gateway protocol‎‎ - Autonomous System‎ - Exterior Gateway Protocol‎‎ - Border Gateway Protocol‎‎

Telnet - File Transfer Protocol‎‎ - Email - Simple Mail Transfer Protocol‎ - Hypertext Transfer Protocol - World Wide Web - Browser

Request for Comments - Internet Experiment Note

Other

Computer operator - User - Multi-user - End-user

Original Equipment Manufacturer - Field service‎ - Engineering Change Order

Vonada's Engineering Maxims

Project MAC‎ - MIT Laboratory for Computer Science - MIT Artificial Intelligence Laboratory‎ - Stanford Artificial Intelligence Laboratory - SRI International

Charles Babbage Institute - Bitsavers

Pages I have substantially upgraded

Dual Inline Package - Random Access Memory

Operating system - Symbolic link

Digital Equipment Corporation - International Business Machines

FLIP CHIP

TU10 magtape drive

RK05 disk drive - RK06/07 disk drive - RL01/02 disk drive - RM02/03 disk drive - RP05 disk drive - RP06 disk drive

PDP-1

PDP-8 - PDP-8/I - PDP-8/E

PDP-10 - TM10 Magnetic Tape Control

PDP-11 architecture - UNIBUS - QBUS

PDP-11/04 - PDP-11/05 - PDP-11/10 - PDP-11/24 - PDP-11/34 - PDP-11/40 - PDP-11/44 - PDP-11/45 - PDP-11/70 - PDP-11/84

KEV11-A floating point - KDF11-A CPU - KDF11-B CPU - J-11 chip set - KDJ11-A CPU

MSV11-D MOS memory - MSV11-J memory module

RF11 disk controller - RK11 disk controller

PCL11 Communications System

DZ11 asynchronous serial line interface

CR11 Card Readers

M782 Interrupt Control

Multics - Incompatible Timesharing System - UNIX Sixth Edition

FORTRAN

Emacs editors‎‎ - QED (text editor) - What You See Is What You Get

Interface Message Processor - ANTS terminal system - Ethernet - CHAOSnet

TCP/IP - Network Control Program