User:Jnc
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 (jnc at mit dot edu).
Prototypes
"μ" - "·" - "•"
Technical Instruction Reference - Maintenance Installation Manual
Illustrated Parts Breakdown - Engineering Drawings - Field Maintenance Print Set
'''xxx''' might refer to:
{{disambiguation}}
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Useful links
- Purge cache (edit as appropriate)
- Category list
- New users
- Computer History Wiki:News
- MediaWiki:Sidebar
- Granting and revoking user rights
- Stub articles
- Semi-stubs
- Disambiguation pages
- Pages with broken file links
- Wikipedia content
- My pages
- ToCat
- Infobox templates:
- 16-bit register templates:
- 32-bit register templates
- 36-bit register templates
Pages I have added
Fundamentals
Architecture - Syntax - Semantics - Identifier - Namespace - Hierarchy
Type - Normalization - Variable - Operand - Operator - Expression - Argument - Tree
Arbitration - Port - Interface - Address - Address space - Mapping - Network
Electric field - Magnetic field - Magnet - Electron - Electrostatic - Current - Ampere - Voltage - Volt
Conductor - Insulator - Resistor - Capacitor - Inductor - Ground - Contact - Relay - Fuse
Direct current - Alternating current - Frequency - Impedance - Transformer
Circuit - Signal - Signal return - Ground return - Propagation delay
Noise - Interference - Crosstalk - Coaxial cable - Transmission line - Terminator - Single-ended signalling - Differential pair - Fiber optic
State machine - Recursive acronym
Components
Crystal - 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 - Field-programmable gate array
Gray code - Negative logic - Wired-OR - Serial - Parallel - Transceiver
Encoding - Frequency Modulation - Modified Frequency Modulation - Non Return to Zero - Non Return to Zero Inverted - Bit stuffing - 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 - DIP switch - Surface mount - Berg connector - Flat cable - Flexprint cable - Over the back
Hardware
Analog computer - Serial computer
Data path - Hardware port - Address bus - Data bus - Front panel - Switch register
Inverter - Flip-flop - Register - Shift register - Register file - Buffer - First-In First-Out buffer - Ring buffer
Adder - Arithmetic logic unit - Central Processing Unit - Bus Address Register
Instruction - Fetch - Execute - Single-step - Instruction set - Instruction set architecture
Program Counter - Instruction Register - Processor Status Word - Condition codes
Index register - General register - Pointer - Stack - Stack Pointer - Array - Random access
Pipeline - Superscalar - Out-of-order execution - Register renaming
Co-processor - Floating point processor - Floating point accelerator - Multi-processor - Channel - Front end
Interrupt - Interrupt vector - Trap
Memory - Main memory - Access time - Cycle time - Interleaving - Cache - Multi-port memory - Shared memory
Plug compatible - Backward compatibility - Program compatible
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 - Symbol table
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 - Workstation
Microprocessor - Motherboard - Daughter-board
Embedded system - Personal computer - Smart-phone
Devices
Delay line - Williams tube - Core memory - Static RAM - Dynamic RAM - Memory 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
Synchronous Data Link Control - High-Level Data Link Control
Display - Cathode ray tube - Raster - Display refresh - 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 - Octet - Character
Binary - One's complement - Two's complement - Binary-coded decimal - Bi-quinary - Multiple precision - Floating point
SIXBIT - RADIX-50 - ASCII - Extended Binary Coded Decimal Interchange Code - ASCIZ
Gray code - Parity - Checksum - Cyclic redundancy check - Error-correcting code
Software - Program - Self-modifying code - Pure code - Programmer - Debug - Backup
Stack frame - Call stack - Local variable - Exception - Condition handler - Unwind
Programming language - Source code - Assembly language - Macro - Scope
Debugger - Compiler - Cross-compiler - Interpreter
Subroutine package - Library - Run-time system - Run-time library - Overlay
Parser - Garbage collection - Object-oriented
Job - Process - Thread - Task - System call - Scheduler
Batch operating system - Disk operating system - Single-tasking - Multi-tasking - Time-sharing - Real-time system - Virtual machine
Kernel - Microkernel - Hypervisor
Record - File - File system - Directory - Hard link - Byte stream - Pipe - Flow control
User interface - Graphical user interface - Window - Command processor
Application - Editor - Text editor - Screen editor - Image editor - Word processor - Database
Portable - Software port - Open source
DEC hardware
DEC engineering drawing numbers - DEC part numbers - DEC edge connector contact identification - DEC alphabet
System Module - FLIP CHIP details - DEC card form factor - System unit
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-P card cage
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 - H786 power supply - H7861 power supply - DEC Power Line Monitor
DEC standard modular regulators - H744 +5V Regulator - H745 -15V Regulator - H754 +20V, -5V Regulator
DEC peripherals
TU16 magtape drive - TE16 magtape drive - TS03 magtape drive - TS11 tape transport
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
DEC asynchronous serial line pinout
VT05 Alphanumeric Display Terminal - VT320
DEC machines
List of Programmed Data Processors - PDP-4 - PDP-9 - PDP-1-X - PDP-X
KLESI Low-End Storage Interconnect
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
TC01 DECtape Control - TC08 DECtape Controller - TD8-E Simple DECtape Control
PDP-6 - KA10 - KI10 - KL10 - KS10
PDP-10 Memory Bus - PDP-10 I/O Bus
DMA20 Memory Bus Adapter - DIA20 IBus Adapter - DTE20 Ten-Eleven Interface - DA10 Twelve- and Eighteen-Bit Computer Interface
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
DF10 Data Channel - RP10 disk controller - RH10 MASSBUS controller
CI20 Computer Interconnect - NIA20 Network Interconnect Adapter
PDP-15 - UNICHANNEL 15 System - MX15-A Memory Bus Multiplexer - 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-11/40E - 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-J Programmer's Console - KY11-LA Operator's Console - KY11-LB Programmer's Console - KY11-L to CPU interface - 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 - KK11-B 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
F-11 chip set - KDF11 CPUs - KDF11-U CPU - KDF11-U CPU pinout - 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-D CPU - KDJ11-E CPU - KTJ11-B UNIBUS adapter - PDP-11/83
RH70 MASSBUS controller - ML11 MOS Memory System
PDP-11 Bootstrap Loader - PDP-11 Absolute Loader
UNIBUS
UNIBUS and QBUS termination - Non-Processor Request and Grant - UNIBUS parity - UNIBUS Device Addresses - Floating device address space - Floating device vectors - UNIBUS priority plug
UNIBUS map - BC11A UNIBUS cable - UNIBUS H854 header pinout - DB11-A Bus Repeater
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 - M930 UNIBUS terminator - M9300 UNIBUS B Terminator - M9302 UNIBUS terminator - M105 Address Selector - M8264 No-SACK Timeout Module - UA11 Unibus Analyzer
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
- M7259 Parity Control Module - M7850 parity controller
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
DA11-B DMA UNIBUS Link - DA11-F UNIBUS Window - DW11 UNIBUS-to-LSI-11 Bus Converter - DX11-B System 360/370 Channel to PDP-11 Unibus Interface
KW11-L Line Time Clock - KW11-P Programmable Real-Time Clock - KW11-W Watchdog Timer
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
VT11 Graphic Display Processor - VS11 Graphic System - VS100
IMP11-A ARPANET interface - IMP11-B ARPANET Interface - ANTS/ISI IMP Interface - LH-DH/11 Local/Distant Host Controller - VDH/11 Very 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 - DR11-W Direct Memory Access Interface
KL11 asynchronous serial line interface - DL11-W serial line unit/real-time clock option - 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 - [[DS11 Multiple Line Synchronous Interface] - DU11 synchronous serial line interface - DUP11 synchronous serial line interface - DQ11 NPR Synchronous Line Interface - DV11 Communications Multiplexer
PC11 High-Speed Paper-Tape Reader/Punch Control - CD11 High-Speed Punched Card Reader Control Unit - CR11 Controller
QBUS
DMA Request and Grant - CD interconnect - Private Memory Interconnect
QBUS backplanes - QBUS peripherals - LSI-11 Bus interface chips - Upgrading QBUS backplanes
H9273 backplane - H9276 backplane - M9047 grant continuity card - DEC bootstrap device codes
QBUS memories - PMI memories - MMV11-A - MSV11-A static MOS memory - MSV11-B MOS memory - MSV11-C MOS memory - 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
KDA50 disk controller VSV11 Graphic System
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
VAXen
Synchronous Backplane Interconnect - KA780 CPU - FP780 Floating-Point Accelerator - MS780 Memory System - MA780 Multiport Memory Option - DW780 Unibus Adapter - RH780 Massbus Adapter
CPU/Memory Interconnect - KA750 CPU
VAXserver 3100 series - VAXserver 4000 series - VAXserver 4000 Model 300
Hierarchical Storage Controller
Non-DEC machines
Texas Instruments - Intel - MIPS
Systems Concepts - Able Computer - Advanced Computer Communications
Remington Rand - Control Data Corporation - General Electric - Xerox - Data General - Symbolics - Compaq - NeXT Computer, Inc
Whirlwind - UNIVAC I - Atlas - Burroughs B5000 - CDC 6600
GE 600 series - GE-635 - GE-645 - 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
Xerox Alto - Alto-1822 Interface - CONS - CADR - SUN workstation - Sun-1
Apple IIc - Apple IIGS - 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
UNIX
UNIX Second Edition - UNIX Third Edition - UNIX Fourth Edition
UNIX file system - Repairing early UNIX file systems
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
LSX - MINI-UNIX - CB-UNIX - PWB/UNIX - USG UNIX - MERT operating system
2.10BSD - 2.11BSD - 4.4BSD - BSD Fast File System
PDP-11 C stack operation - UNIX a.out file - Typesetter C - Standard I/O library
Software systems
Compatible Time-Sharing System - OS/360 - CP operating system - TOPS-10 - TENEX
ELF operating system - MOS operating system - FAT file system
PLATO - XXDP diagnostic package - MACRO-11
Michigan Algorithm Decoder - ALGOL - BCPL - BLISS - B programming language - DIBOL - Java
Video game - Terminal emulator - X Window System - Stanford University Design System
Hello, world - lex - flex - Vi editor - Epsilon
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 - Gateway - 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 - Application protocol - Internetworking layer - Reliable byte stream - End to end
Networking port - Connection - Sequence number - Acknowledgement - Timeout - Retransmission
International Network Working Group - TCP and Internet Meetings - TCP and IP bake offs - Internet Engineering Task Force
1822 interface - Network Control Program (ARPANET) - Host-to-IMP Protocol - Terminal Interface Processor - Terminal Interface Unit - Port Expander - C Gateway
Digital Data Communications Message Protocol - Packet Radio Network - Media Access Control Address - 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 - Nimrod
Telnet - File Transfer Protocol - Email - Simple Mail Transfer Protocol - Hypertext Transfer Protocol - World Wide Web - Browser
Hypertext - Hypertext Markup Language
Request for Comments - Internet Experiment Note
Other
Computer operator - User - Multi-user - End-user
Original Equipment Manufacturer - Field service - Engineering Change Order
Defense Advanced Research Projects Administration
Project MAC - MIT Laboratory for Computer Science - MIT Artificial Intelligence Laboratory - MIT Computer Science and Artificial Intelligence Laboratory
Stanford University - Stanford Artificial Intelligence Laboratory - SRI International
Bell Laboratories - UNIX Support Group - Bell System Technical Journal
Charles Babbage Institute - Computer History Museum - Bitsavers - Living Computer Museum
C. Gordon Bell - Butler Lampson - Dennis Ritchie - Ken Thompson
Pages I have substantially upgraded
Dual Inline Package - Random Access Memory
Operating system - Symbolic link
Digital Equipment Corporation - International Business Machines
RK05 disk drive - RK06/07 disk drive - RL01/02 disk drive - RM02/03 disk drive - RP05 disk drive - RP06 disk drive
PDP-10 - TM10 Magnetic Tape Control
VAX-11/750 - MS750 Memory System
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
DZ11 asynchronous serial line interface
KWV11-C programmable real-time clock
Multics - Incompatible Timesharing System - UNIX Sixth Edition
Emacs editors - QED (text editor) - What You See Is What You Get
Interface Message Processor - ANTS terminal system - Ethernet - CHAOSnet
