User:Jnc

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Although I have a wide interest in older computers, I worked with PDP-11's very 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 on the Computer History Wiki, 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

Table Prototype
Headers
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xxx might refer to:

{disambiguation}}

Useful links

Pages I have added

Architecture - Program - Programmer - Protocol

Binary - Gray code - Floating point - Frequency Modulation‎ - Modified Frequency Modulation‎

Meta-stability - Synchronizer - Arbiter

Central Processing Unit - Instruction - Main memory - Secondary storage - Load-store architecture

Arithmetic-logic unit‎ - Register - Microcode - First-In First-Out buffer - Cache

Program Counter - Processor Status Word - Condition codes - Conditional branch - Base and bounds

Object code - Relocatable binary - Virtual address - Virtual memory - Single-level store

Stack - Stack Pointer - Loop - Subroutine - Control flow

Reduced Instruction Set Computer - Complex Instruction Set Computer - IBM-compatible PC

Mainframe - Minicomputer - Personal computer - Microprocessor

Bootstrap - Simulator - Emulator

Programming language - Source code - Macro - Assembly language - Compiler - Cross-compiler - Interpreter

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

Batch - Multitasking - Process - Virtual machine - Time-sharing - Real-time system

File - File system - Command processor - DOS

Interrupt - Direct Memory Access - Programmed I/O - Trap

Paper tape

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

Transistor - Transistor–transistor logic‎ - Metal Oxide Semiconductor - Integrated circuit

Core memory - Dynamic RAM

Serial line - Asynchronous serial line - Synchronous serial line - 20mA current loop serial line interface - EIA RS-232 serial line interface

Backplane - Wire-wrap - Printed circuit board

System Module - DEC card form factor - System unit - DEC alphabet

H960 rack - BA11 mounting boxes - BA11 mounting box - BA11-K mounting box - BA11-L mounting box

DECtape - LINC tape - DEC indicator panel

LINC - LINC-8 - PDP-9 - PDP-12 - PDP-15

PDP-6 - KA10 - KI10 - KL10 - KS10

PDP-11 Memory Management - UNIBUS map

PDP-11 Extended Instruction Set - FP11 floating point - FIS floating point

Bus grant line - Non-Processor Request - Upgrading QBUS backplanes

Small Peripheral Controller - Modified UNIBUS Device - Extended UNIBUS

CD interconnect - Private Memory Interconnect - MASSBUS

G727 grant continuity card - G7273 grant continuity card - UNIBUS H854 header pinout - DEC asynchronous serial line pinout

KA11 CPU - 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 - KD11-E CPU - KD11-EA CPU - KY11-LA Operator's Console - KY11-LB Programmer's Console

FP11-A Floating-Point Processor - FP11-B Floating-Point Processor - FP11-C Floating-Point Processor - MJ11 memory system - MK11 memory system

LSI-11 - F-11 chip set - KTF11-A memory management chip - KEF11-A floating point chip - KDF11 CPUs - KDF11-U CPU

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

UNIBUS memories - MM11-D core memory - MM11-L core memory - MM11-U core memory

QBUS memories - CMV-[25]xx - CMV-[14]000 - MK8022 - National Semiconductor NS23M - National Semiconductor NS23C - Q-RAM 11

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

QBUS boot ROMs - BDV11 Bus Terminator/ROM‎

RK11-C disk controller - RP11 disk controller - RL11 disk controller - RH11 MASSBUS controller - RH70 MASSBUS controller

RK02 disk drive - RP02 disk drive - RP03 disk drive - RP04 disk drive - RX0x floppy drive

TM11 magtape controller - TM02 magtape controller - TM03 magtape controller - TU16 - TE16

DR11 parallel interface - DR11-B parallel interface - DL11 asynchronous serial line interface - DH11 asynchronous serial line interface

IBM 709 - IBM 7090 - IBM 7094 -Honeywell 6000 series‎‎

Intel 8085 - Motorola M68000 Family - Motorola MC68000 - MIPS

IBM PC‎ - IBM-compatible PC

Ersatz-11 - Bochs

Compatible Time-Sharing System - TOPS-10 - TENEX

2.10BSD - 2.11BSD - UNIX file system - BSD Fast File System

Installing UNIX Sixth Edition - Installing UNIX Sixth Edition on Ersatz-11 - Running an LSI-11 from Unix V6 - Installing UNIX Seventh Edition

ALGOL - BCPL

Request for Comments - Bitsavers - Vonada's Engineering Maxims

Pages I have substantially upgraded

Operating system

Ethernet

Digital Equipment Corporation - International Business Machines

FLIP CHIP

PDP-10

PDP-11 architecture - UNIBUS - QBUS

PDP-11/04 - PDP-11/10 - PDP-11/24 - PDP-11/34 - PDP-11/45 - PDP-11/70

KDF11-A CPU - KDF11-B CPU - KDJ11-A CPU - J-11 chip set

RK11 disk controller - RK05 disk drive - RL01 disk drive - RL02 disk drive - RP06 disk drive

TU10

M7821

Multics - Incompatible Timesharing System - UNIX Sixth Edition

FORTRAN