DEC: the Mistakes That Led to Its Downfall
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Spacewarduino
1 SPACEWARDUINO Kaivan Wadia (Department of EECS) – Massachusetts Institute of Technology Advisor: Prof. Philip Tan ABSTRACT Spacewar! was one of the first ever computer games developed in the early 1960s. Steve Russell, Martin Graetz and Wayne Witaenem of the fictitious "Hingham Institute" conceived of the game in 1961, with the intent of implementing it on a DEC PDP-1 computer at MIT. Alan Kotok obtained some sine and cosine routines from DEC following which Steve Russell started coding and the first version was produced by February 1962. Spacewar! was the first computer game written at MIT. In the duration of this project we hope to implement the same game on an Arduino Microcontroller with a Gameduino shield while examining the original assembly code and staying as true to the original version of the game as possible. 2 TABLE OF CONTENTS 1. INTRODUCTION 3 2. UNDERSTANDING THE SOURCE CODE 4 3. VECTOR GRAPHICS AND SPACESHIPS 7 4. SPACEWAR! NIGHT SKY 9 5. THE ARDUINO/GAMEDUINO IMPLEMENTATION 11 6. CONCLUSION 13 7. REFERENCES 14 3 1. INTRODUCTION The major aim of this project is to replicate the first computer game written at MIT, Spacewar!. In the process we aim to learn a lot about the way video games were written for the machines in the pioneering days of computing. Spacewar! is game of space combat created for the DEC PDP-1 by hackers at MIT, including Steve Russell, Martin Graetz, Wayne Witaenem, Alan Kotok, Dan Edwards, and Peter Samson. The game can be played on a Java emulator at http://spacewar.oversigma.com/. -
MIPS Architecture
Introduction to the MIPS Architecture January 14–16, 2013 1 / 24 Unofficial textbook MIPS Assembly Language Programming by Robert Britton A beta version of this book (2003) is available free online 2 / 24 Exercise 1 clarification This is a question about converting between bases • bit – base-2 (states: 0 and 1) • flash cell – base-4 (states: 0–3) • hex digit – base-16 (states: 0–9, A–F) • Each hex digit represents 4 bits of information: 0xE ) 1110 • It takes two hex digits to represent one byte: 1010 0111 ) 0xA7 3 / 24 Outline Overview of the MIPS architecture What is a computer architecture? Fetch-decode-execute cycle Datapath and control unit Components of the MIPS architecture Memory Other components of the datapath Control unit 4 / 24 What is a computer architecture? One view: The machine language the CPU implements Instruction set architecture (ISA) • Built in data types (integers, floating point numbers) • Fixed set of instructions • Fixed set of on-processor variables (registers) • Interface for reading/writing memory • Mechanisms to do input/output 5 / 24 What is a computer architecture? Another view: How the ISA is implemented Microarchitecture 6 / 24 How a computer executes a program Fetch-decode-execute cycle (FDX) 1. fetch the next instruction from memory 2. decode the instruction 3. execute the instruction Decode determines: • operation to execute • arguments to use • where the result will be stored Execute: • performs the operation • determines next instruction to fetch (by default, next one) 7 / 24 Datapath and control unit -
Windows XP History and Versions
Lecture 23: Windows XP History and Versions n Mid-80ies Microsoft and IBM cooperated to develop OS/2 n Windows XP is produced by Microsoft Co. n 1988 - Microsoft started to develop its own new technology (NT) OS n XP is multi-user, multi-process, preemptive multitasking OS, 30M lines of source code capable of running OS/2, Windows and Unix apps. Hired Dave Cutler - architect of DEC VAX/VMS to head the design n It is developed to support multiple platforms and targeted towards enterprise workstations and server market as well as n NT v. 3.1 first released commercially July 1993 desktops n NT v 4.0 adopted Windows 95 user interface, graphics code moved into kernel to improve performance n In today’s lecture n 2000 – improved networking and laptop support, support for plug-and- u XP’s predecessors, the history of XP design, XP versions play devices, support for more processors (up to 8) and memory, u design principles becomes true multi-user through terminal server u components n XP (released Oct 2001) – update for 2000 replacement for 95/98 F hardware abstraction layer u simplifies user interface, improved reliability, performance F executive improvements, partial 64-bit support F environmental subsystems n versions F file system u desktop: XP personal – 95/98 replacement, professional – advanced features like POSIX support, some network features 1 u server: .NET – support for web/print service, clusters, large memory2 and multiple processors Design goals Components n XP is microkernel-based, modular n security – NT was C-2 certified (US -
MIPS IV Instruction Set
MIPS IV Instruction Set Revision 3.2 September, 1995 Charles Price MIPS Technologies, Inc. All Right Reserved RESTRICTED RIGHTS LEGEND Use, duplication, or disclosure of the technical data contained in this document by the Government is subject to restrictions as set forth in subdivision (c) (1) (ii) of the Rights in Technical Data and Computer Software clause at DFARS 52.227-7013 and / or in similar or successor clauses in the FAR, or in the DOD or NASA FAR Supplement. Unpublished rights reserved under the Copyright Laws of the United States. Contractor / manufacturer is MIPS Technologies, Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311. R2000, R3000, R6000, R4000, R4400, R4200, R8000, R4300 and R10000 are trademarks of MIPS Technologies, Inc. MIPS and R3000 are registered trademarks of MIPS Technologies, Inc. The information in this document is preliminary and subject to change without notice. MIPS Technologies, Inc. (MTI) reserves the right to change any portion of the product described herein to improve function or design. MTI does not assume liability arising out of the application or use of any product or circuit described herein. Information on MIPS products is available electronically: (a) Through the World Wide Web. Point your WWW client to: http://www.mips.com (b) Through ftp from the internet site “sgigate.sgi.com”. Login as “ftp” or “anonymous” and then cd to the directory “pub/doc”. (c) Through an automated FAX service: Inside the USA toll free: (800) 446-6477 (800-IGO-MIPS) Outside the USA: (415) 688-4321 (call from a FAX machine) MIPS Technologies, Inc. -
(12) United States Patent (10) Patent No.: US 7,590,772 B2 Marriott Et Al
US00759.0772B2 (12) United States Patent (10) Patent No.: US 7,590,772 B2 Marriott et al. (45) Date of Patent: Sep. 15, 2009 (54) AUDIO STATUS INFORMATION FOR A 5,596.260 A 1/1997 Moravec et al. PORTABLE ELECTRONIC DEVICE 5,608,698 A 3, 1997 Yamanoi et al. 5,616,876 A 4, 1997 ClutS (75) Inventors: Greg Marriott, Palo Alto, CA (US); 3.65 A 2. ls. Sr. etal Andrew Bert Hodge, Menlo Park, CA 5,684.513.w W A 1 1/1997 Deckerappels, Sr. et al. 5,710,922 A 1/1998 Alley et al. 5,712,949 A 1/1998 Kato et al. (73) Assignee: Apple Inc., Cupertino, CA (US) 5,721,949 A 2f1998 Smith et al. c 5,726,672 A 3, 1998 Hernandez et al. (*) Notice: Subject to any disclaimer, the term of this 5,739,451 A 4/1998 Winksy et al. patent is extended or adjusted under 35 5,740,143 A 4/1998 Suetomi U.S.C. 154(b) by 344 days. 5,815,225. A 9/1998 Nelson (21) Appl. No.: 11/209,367 (Continued) (22) Filed: Aug.e 22,a? a 9 2005 FOREIGN PATENT DOCUMENTS DE 43 34 773 A1 4f1994 (65) Prior Publication Data US 2007/0079027 A1 Apr. 5, 2007 (Continued) (51) Int. Cl OTHER PUBLICATIONS nt. C. G06F 3/00 (2006.01) U.S. Appl. No. 1 1/144,541, filed Jun. 3, 2005 and titled “Techniques G06F I/00 (2006.01) for Presenting Sound Effects on a Portable Media Player.” (52) U.S. -
Mi!!Lxlosalamos SCIENTIFIC LABORATORY
LA=8902-MS C3b ClC-l 4 REPORT COLLECTION REPRODUCTION COPY VAXNMS Benchmarking 1-’ > .— u) 9 g .— mi!!lxLOS ALAMOS SCIENTIFIC LABORATORY Post Office Box 1663 Los Alamos. New Mexico 87545 — wAifiimative Action/Equal Opportunity Employer b . l)lS(”L,\l\ll K “Thisreport wm prcpmd J, an xcttunt ,,1”wurk ,pmwrd by an dgmcy d the tlnitwl SIdtcs (kvcm. mm:. Ncit her t hc llniml SIJIL.. ( Lwcrnmcm nor any .gcncy tlhmd. nor my 08”Ihcif cmployccs. makci my wur,nly. mprcss w mphd. or JwImL.s m> lcg.d Iululity ur rcspmuhdily ltw Ilw w.cur- acy. .vmplctcncs. w uscftthtc>. ttt”any ml’ormdt ml. dpprdl us. prudu.i. w proccw didowd. or rep. resent%Ihd IIS us wuukl not mfrm$e priwtcly mvnd rqdtts. Itcl”crmcti herein 10 my sp.xi!l tom. mrcial ptotlucr. prtxcm. or S.rvskc hy tdc mmw. Irdcnmrl.. nmu(a.lurm. or dwrwi~.. does nut mmwsuily mnstitutc or reply its mdursmwnt. rccummcnddton. or favorin: by the llniwd States (“mvcmment ormy qxncy thctcd. rhc V!C$VSmd opinmm d .mthor% qmxd herein do nut net’. UMrily r;~lt or died lhow. ol”the llnttcd SIJIL.S( ;ovwnnwnt or my ugcncy lhure of. UNITED STATES .. DEPARTMENT OF ENERGY CONTRACT W-7405 -ENG. 36 . ... LA-8902-MS UC-32 Issued: July 1981 G- . VAX/VMS Benchmarking Larry Creel —. I . .._- -- ----- ,. .- .-. .: .- ,.. .. ., ..,..: , .. .., . ... ..... - .-, ..:. .. *._–: - . VAX/VMS BENCHMARKING by Larry Creel ABSTRACT Primary emphasis in this report is on the perform- ance of three Digital Equipment Corporation VAX-11/780 computers at the Los Alamos National Laboratory. Programs used in the study are part of the Laboratory’s set of benchmark programs. -
VAX 4000 V96-2.3—10 Feb 1997
TM VAX 4000 V96-2.3—10 Feb 1997 DIGITAL Systems and Options Catalog Product Description VAX 4000 systems provide commercial systems performance, high availability, and a compact footprint. They support a wide range of applications and options, including FDDI networks and Q-bus peripherals. System enclosure supports internal storage and Q-bus expansion through a B400X expansion cabinet. VAX 4000 systems come in three packages: Desktop Model 106A, Desktop/Deskside Model 108, and Pedestal/Deskside Model 505A/705A DSSI and Ethernet adapter chips—each driven by a 10-MIP on-chip RISC processor—are tightly integrated on the CPU module with direct access to memory. Digital's DSSI to SCSI HSD10 storage solutions replace DSSI RF36 disk technology in all VAX 4000 systems. Digital’s HSD10 DSSI-to-SCSI controller. mounted internally in system cabinet, supports standard RZxx SCSI storage on VAX 4000 systems while still supporting DSSI clustering. External StorageWorks HSD10 controllers are supported. VAX 4000 Model 106A offers performance of 10-ns NVAX chip. Systems achieve 215 transactions per second (TPS). With internal support for the HSD10, DSSI-to-SCSI controller, VAX 4000 customers can take advantage of low-cost, more flexible and open StorageWorks solutions. VAX 4000 Model 108 offers identical performance, is compatible with Model 106A, but is housed in a new Desktop/Deskside minitower enclosure. In addition, these systems offer enchancements in the memory and storage capacity, supporting up to 512 MB of standard SIMM memory and six storage devices in the system enclosure. VAX 4000 Model 505A and 705A offer 12 ns and 9 ns performance, respectively in a Q-bus Pedestal package. -
I Txso C~T Dc~ 5 SPD / LETTER FC~R
i DIGITAL Digital Equipm~t3t Corporation SOFTW~►,RE Digital Drive SILL OF MATERIALS Westminster, Massachusetts 01473-0471 Option Number Option Title Date Page ~ QA-10 OAA-W55.6 ~rAX FORTF~? V5.6 UPD TK5 0 28-Feb-91 1 of 1 ~TY PICK LOCATION PART NLJL~ER PART DESCRIPTION .~_ -.. 1 *FS* 36-28231-07 TRE~I~ZA~L S~~RCODE LABEL 1 *FS* 99-08545-02 BOOKT~IRAP 1 t UR) AQ-FP 8 6N-BN ~irAX FORTP~AN V5.6 BIN TK5 0 1 ~ DP ~ AV-PF4FA-TK SUP REPLACEMENT LETTER 1 EN-01044-07 SFT'WR PERFOF~!~ANCE REPORT FORM 1 ***** NS ~~~ QA-10 OAA-WZ 5.6 ~irAX FORTF~AN V5.6 UPD DOC 1 *FS* 36-28231-0? THEF~!zA,L P.~ARCODE LABEL 1 *FS* 99-08545-02 BOOKT~IRAP 1 (UR} AE-JF8?L-TE ~irAX FORTP►AN V5.6 SPD 2 5.16.3 6 1 - t~~ AE-LT36H-TE ~irAX FORTP;AN SSA 2 5.16.3 6 -A 1 SDP ) AE -1~tA,5 OA- TK SOFTWARE W TY ADDENDUM 1 tUR~ AV-N672V-TE V'AX FORTP►AN V5.6 PAD FIRS T 1 EN-02512-05 C~3LANGE OF ADDRESS CARD ilk.~ r~~i~li~ilpirfi~~ra~~reis~-~-~~~------~----~~~~ t~ii~~l~+~r~~~-~~~--~--~.r~.~ i Txso c~t Dc~ 5 SPD / LETTER FC~R : AV-PF4FA- TK October, 1990 d 9 Dear Service Customer, Enclosed is a software product update/maintenance release supplied as part of your software maintenance agreement. As part of its planned License Management Zbols program, Digital has initiated replacement of all Service Update PAKs (SUPs) for licensed software product with License Product Authorization Keys (PAKs). -
ILLUSTRATIONS Figure 1.1 Eadweard Muybridge, Descending
APPENDIX: ILLUSTRATIONS Figure 1.1 Eadweard Muybridge, Descending Stairs and Turning Around, photographs from series Animal Locomotion, 1884-1885. 236 237 Figure 1.2 Marcel Duchamp, Nude Descending a Staircase, No. 2 oil on canvas, 1912. Philadelphia Museum of Art. 238 Figure 1.3 Giacomo Balla, Dynamism of a Dog on a Leash, oil on canvas, 1912. Albright-Knox Art Gallery, Buffalo, New York. 239 Figure 1.4 A. Michael Noll, Gaussian Quadratic, computer-generated image, 1963. 240 Figure 1.5 Stephen Rusell with Peter Samson, Martin Graetz,Wayne Witanen, Alan Kotok, and Dan Edwards, Spacewar!, computer game, designed at MIT on DEC PDP-1 assembler, 1962. Above: view of screen. Below: console. 241 Figure 1.6 Andy Warhol, Self-Portrait, photograph of image created on Commodore Amiga 1000 computer using Graphicraft software, 1986. 242 Figure 1.7 Nam June Paik, Magnet TV, black and white television with magnet, 1965. 243 Figure 1.8 Nam June Paik, Zen for TV, black and white television, 1963-1975. 244 Figure 1.9 Vito Acconci, Centers, performance on video, 20 minutes, 1971. 245 Figure 1.10 Joan Jonas, Left Side, Right Side, performance on video, 1972. Pat Hearn Gallery, New York. 246 Figure 1.11 Dan Graham, Present Continuous Past, installation view, 1974. 247 Figure 1.12 Gary Hill, Hole in the Wall, installation at the Woodstock Artists Association, Woodstock, NY, 1974. 248 Figure 1.13 Nam June Paik, TV Buddha, mixed-media video sculpture, installed at Stedelijk Museum, Amsterdam, 1974. 249 Figure 2.1 jodi (Joan Heemskerk and Dirk Paesmans), wwwwwwwww.jodi.org, screenshot. -
Unifying the User and Kernel Environments
Unifying the User and Kernel Environments Richard P. Draves Scott M. Cutshall March 12, 1997 Technical Report MSR-TR-97-10 Microsoft Research Microsoft Corporation One Microsoft Way Redmond, WA 98052 Unifying the User and Kernel Environments Richard P. Draves and Scott M. Cutshall Microsoft Research One Microsoft Way Redmond, WA 98052 http://www.research.microsoft.com Abstract Vendors of commercial operating systems today invest resources in two very different environments—one for user- level (application or server) programming and one for kernel-level (device driver or subsystem) programming. The kernel environment is typically more restrictive, with completely different interfaces and programming conventions. Based on our experience developing and deploying an operating system for an interactive TV system, we believe that it is desirable to unify the user and kernel environments. We structured our operating system to provide common programming and run-time environments for user-level code and kernel-level code. For example, modules loaded into the kernel did not have any restrictions on their use of shared libraries or stack space. We found that unifying the user and kernel environments with common interfaces and run-time requirements, common documentation, and a common debugger produced significant software-engineering benefits. In addition, we could transparently collocate trusted server code in the kernel to reduce memory usage and improve performance. 1. Introduction We advocate structuring operating systems to unify the user and kernel environments. The operating system should present a single environment, with common interfaces or APIs, common run-time characteristics for scheduling, paging, stack usage, and shared libraries, common debugger and development tools, etc. -
HP Openvms Cluster Software SPD 29.78.27
Software Product Description PRODUCT NAME: HP OpenVMS Cluster Software SPD 29.78.27 This Software Product Description describes Versions a mix of AlphaServer and VAX or AlphaServer and In- 6.2–1H3, 7.1–1H1, 7.1–1H2, 7.1–2, 7.2, 7.2–1, 7.2– tegrity server systems. In this SPD, this environment is 1H1, 7.2-2, 7.3, 7.3–1, 7.3–2, 8.2, 8.2–1 and 8.3 of the referred to as an OpenVMS Cluster system. following products: Systems in an OpenVMS Cluster system can share pro- • HP VMScluster Software for OpenVMS for Integrity cessing, mass storage (including system disks), and Servers other resources under a single OpenVMS security and management domain. Within this highly integrated en- • HP VMScluster Software for OpenVMS AlphaServers vironment, systems retain their independence because (through V8.3) they use local, memory-resident copies of the OpenVMS operating system. Thus, OpenVMS Cluster systems • HP VAXcluster Software for OpenVMS VAX (through can boot and shut down independently while benefiting V7.3) from common resources. • HP OpenVMS Cluster Client Software for Integrity Servers Applications running on one or more systems in an OpenVMS Cluster system can access shared resources • HP OpenVMS Cluster Client Software for Al- in a coordinated manner. OpenVMS Cluster soft- phaServers (part of NAS150) ware components synchronize access to shared re- sources, allowing multiple processes on any system in • HP OpenVMS Cluster Client Software for VAX the OpenVMS Cluster to perform coordinated, shared (through V7.3) (part of NAS150) data updates. Except where noted, the features described in this Because resources are shared, OpenVMS Cluster sys- SPD apply equally to Integrity server, AlphaServers and tems offer higher availability than standalone systems. -
Validated Processor List
NISTIR 4557 Programming Languages and Database Language SQL VALIDATED PROCESSOR UST Including GOSIP Conformance Testing Registers Judy B. Kailey Editor U.S. DEPARTMENT OF COMMERCE National Institute of Standards and Technology National Computer Systems Laboratory Software Standards Validation Group Gaithersburg, MD 20899 April 1991 (Supersedes January 1991 Issue) U.S. DEPARTMENT OF COMMERCE Robert A. Mosbacher, Secretary NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY John W. Lyons, Director NIST > NISTIR 4557 Programming Languages and Database Language SQL VALIDATED PROCESSOR LIST Including GOSIP Conformance Testing Registers Judy B. Kailey Editor U.S. DEPARTMENT OF COMMERCE National Institute of Standards and Technology National Computer Systems Laboratory Software Standards Validation Group Gaithersburg, MD 20899 April 1991 (Supersedes January 1991 Issue) U.S. DEPARTMENT OF COMMERCE Robert A. Mosbacher, Secretary NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY John W. Lyons, Director lib t TABLE OF CONTENTS 1. INTRODUCTION 1 1.1 Purpose 1 1.2 Document Organization 1 1.2.1 Language Processors 1 1.2.2 Contributors to the VPL 2 1.2.3 Other FIPS Conformance Testing Products 2 1.2.4 GOSIP Registers 2 1.3 FIPS Programming and Database Language Standards 3 1.4 Validation of Processors 3 1.4.1 Validation Requirements 3 1.4.2 Placement in the List 4 1.4.3 Removal from the List 4 1.4.4 Validation Procedures 4 1.5 Certificate of Validation 4 1.6 Registered Report 4 1.7 Processor Validation Suites 5 2. COBOL PROCESSORS 7 3. FORTRAN PROCESSORS 13 4. Ada PROCESSORS 21 5. Pascal PROCESSORS 35 6. SQL PROCESSORS 37 APPENDIX A CONTRIBUTORS TO THE LIST A-1 APPENDIX B OTHER FIPS CONFORMANCE TESTING B-1 APPENDIX C REGISTER OF GOSIP ABSTRACT TEST SUITES C-1 APPENDIX D REGISTER OF GOSIP MEANS OF TESTING D-1 APPENDIX E REGISTER OF GOSIP CONFORMANCE TESTING LABORATORIES E-1 .