http://www.secuobs.com Observatoire de la securite Internet fr webmaster@secuobs.com 2016-01-22 11:07:26 - pagetable.com : There are many MOS 6502 cross-assemblers available Here s a new one Or actually a very old one Macross , a very powerful 6502 macro assembler, was developed between 1984 and 1987 at Lucasfilm Ltd and is now Open Source MIT license https githubcom Museum-of-Art-and-Digital-Entertainment macross Some History Starting in 1984, a team at Lucasfilm Ltd was developing one of http://www.secuobs.com/revue/news/596216.shtmlhttp://www.secuobs.com/revue/news/596216.shtml Secuobs.com : 2015-06-10 07:35:56 - pagetable.com - The Hypervisorframework user mode virtualization API introduced in Mac OS X 1010 Yosemite cannot only be used for toy projects like the hvdos DOS Emulator, but is full-featured enough to support a full virtualization solution that can for example run Linux xhyve is a lightweight virtualization solution for OS X that is capable of running http://www.secuobs.com/revue/news/573527.shtmlhttp://www.secuobs.com/revue/news/573527.shtml Secuobs.com : 2015-04-14 17:29:31 - pagetable.com - Microsoft BASIC for 6502 exists digitally in source form the older version of the Intel 8080 CPU only exists on paper though as a printout in the archives of Harvard University Some snippets of the code are public though Ian Griffiths held the printout in his hands and took notes He copied down several lines http://www.secuobs.com/revue/news/567298.shtmlhttp://www.secuobs.com/revue/news/567298.shtml Secuobs.com : 2015-03-10 16:32:56 - pagetable.com - Here s the challenge Take code that you wrote some 20 years ago in an obsolete programming language for an obsolete platform, make it run on a modern system without emulation and actually make it useful In 1995, I started developing a 6502 Cross Assembler for MS-DOS, in my then favorite languages PowerBASIC for the bulk http://www.secuobs.com/revue/news/562844.shtmlhttp://www.secuobs.com/revue/news/562844.shtml Secuobs.com : 2015-03-03 17:08:25 - pagetable.com - Emulating older computers on modern, much faster systems, is very common nowadays but how about emulating the Intel 8080 1974 on a MOS 6502 system like the KIM-1 1975 The 8080 Simulator for the 6502 by Dann McCreary from 1978 does exactly that Why imitate one microprocessor with another You probably purchased this 8080 http://www.secuobs.com/revue/news/561953.shtmlhttp://www.secuobs.com/revue/news/561953.shtml Secuobs.com : 2015-02-24 17:11:14 - pagetable.com - If you have developed applications for the Commodore 64 in the 80s or 90s, chances are you still have your old floppy disk with the original assembly sources If you have used the VisAss or F8 AssBlaster assemblers, you can use the command line tool vis2ascii to convert the encoded binary files into ASCII, so http://www.secuobs.com/revue/news/560935.shtmlhttp://www.secuobs.com/revue/news/560935.shtml Secuobs.com : 2015-02-17 16:56:51 - pagetable.com - The Final Cartridge III was one of the major multi-function extension cartridges for the Commodore 64 It contained BASIC extensions, floppy and tape speeders, centronics printer support, screen editor extensions including F-key shortcuts, a monitor, a freezer and a GEOS-like windowing system called Desktop In all this, the FC3 integrated seamlessly with the look-and-feel http://www.secuobs.com/revue/news/559904.shtmlhttp://www.secuobs.com/revue/news/559904.shtml Secuobs.com : 2015-02-10 18:27:28 - pagetable.com - The Wave is a Web Browser for GEOS with the Wheels extension on C64 C128 machines with a SuperCPU and a RAM extension A while ago, Maurice Randall, the author, published the source of the V10 version as a WR3 archive that contained the assembly source in GeoWrite format and some developer documentation I converted the http://www.secuobs.com/revue/news/558904.shtmlhttp://www.secuobs.com/revue/news/558904.shtml Secuobs.com : 2015-02-03 18:58:39 - pagetable.com - geowrite2rtf is a tool that converts Commodore 64 128 GEOS GeoWrite documents into RTF format Most formatting will be preserved, but some formatting and graphics will be discarded The C64 C128 GEOS GeoWrite file format is a rich text format, which is, like most GEOS file formats, not a sequential file, but a VLIR file, a collection http://www.secuobs.com/revue/news/557852.shtmlhttp://www.secuobs.com/revue/news/557852.shtml Secuobs.com : 2015-01-27 16:47:42 - pagetable.com - The Commodore 64 ROM has been subject to immense reverse engineering Many commented disassemblies were published over the decades, scattered over different media such as books, magazines, disks, and later, the internet and there are even some commentaries that apply to the C64 ROM, but were written with other systems in mind that shared http://www.secuobs.com/revue/news/556774.shtmlhttp://www.secuobs.com/revue/news/556774.shtml Secuobs.com : 2015-01-20 21:25:35 - pagetable.com - On my quest of collecting as many commentaries on the Commodore 64 ROM at pagetablecom c64rom, we have gathered Lee Davison s excellent commentary, the German de facto standard by Data Becker, and an adaptation of Bob Sander-Cederlof s Apple II ROM commentary, all in the same cross-referenced HTML format Now that Microsoft s original source of MOS 6502 http://www.secuobs.com/revue/news/555566.shtmlhttp://www.secuobs.com/revue/news/555566.shtml Secuobs.com : 2015-01-13 21:08:41 - pagetable.com - This is the original 1978 source code of Microsoft BASIC for 6502 with all original comments, documentation and easter eggs bah M6502MAC 1978-07-27, 6955 lines, 161,685 bytes This is currently the oldest publicly available piece of source written by Bill Gates Language Like the 8080 version, the 6502 version was developed on a PDP-10, using http://www.secuobs.com/revue/news/554406.shtmlhttp://www.secuobs.com/revue/news/554406.shtml Secuobs.com : 2015-01-05 00:11:49 - pagetable.com - Since Version 1010 Yosemite , OS X contains Hypervisorframework, which provides a thin user mode abstraction of the Intel VT features It enables apps to use virtualization without the need of a kernel extension KEXT which makes them compatible with the OS X App Store guidelines The idea is that the OS takes care of http://www.secuobs.com/revue/news/553004.shtmlhttp://www.secuobs.com/revue/news/553004.shtml Secuobs.com : 2014-12-29 20:58:47 - pagetable.com - In our series about C64 ROM commentaries English version by Lee Davison, German version by Data Becker , I m now presenting a most unusual C64 ROM commentary based on a commented disassembly of the Apple II ROM S-C DocuMentor for Applesoft is a commented disassembly of the BASIC ROM of the Apple II computer Like http://www.secuobs.com/revue/news/552259.shtmlhttp://www.secuobs.com/revue/news/552259.shtml Secuobs.com : 2014-12-21 05:53:38 - pagetable.com - After last week s German C64 ROM disassembly from the 64 intern book, I have now also converted Lee Davison s commented disassembly into the same format The cross-referenced HTML version is available here at pagetablecom c64rom The raw txt files of both the German and the English commented disassemblies are maintained at githubcom mist64 c64rom The two files seem http://www.secuobs.com/revue/news/551303.shtmlhttp://www.secuobs.com/revue/news/551303.shtml Secuobs.com : 2014-12-16 06:54:03 - pagetable.com - Whenever I need to look up some code in the ROM of the Commodore 64, I have the choice of the commented disassembly by Marko Mäkelä or the one by Ninja The Dreams, neither of which is very complete or I can just use my paper copy of Das neue Commodore-64-intern-Buch , an excellent line-by-line commentary http://www.secuobs.com/revue/news/550329.shtmlhttp://www.secuobs.com/revue/news/550329.shtml Secuobs.com : 2014-12-09 17:42:40 - pagetable.com - Xbox hacking has made it to the silver screen, and Felix Domke and me Michael Steil are movie stars and so are at least 14 of my presentation slides This a picture from the Julian Assange and Wikileaks movie The Fifth Estate 2013 , starring Benedict Cumberbatch and Daniel Brühl, directed by Bill Condon Linux is http://www.secuobs.com/revue/news/549234.shtmlhttp://www.secuobs.com/revue/news/549234.shtml Secuobs.com : 2014-12-02 02:31:55 - pagetable.com - Feiler, JesseRhapsody Developer s GuideBoston AP Professional, 1997ISBN 0-12-251334-7 528 pages, 133 MB PDF Rhapsody Developer s Guide provides a road map to Rhapsody technology and the ways it can be used Based on a modern microkernel, Rhapsody runs on PowerPC and Intel processors, and supports traditional Mac OS applications in the Blue Box as well as modern applications http://www.secuobs.com/revue/news/547936.shtmlhttp://www.secuobs.com/revue/news/547936.shtml Secuobs.com : 2013-03-29 04:34:11 - pagetable.com - by James Abbatiello My first computer was a Texas Instruments TI-99 4A Longtime readers may remember a previous article where we implemented TI-99 4A BASIC as a Scripting Language for modern computers Recently I got nostalgic for the actual hardware so I got my 99 out of the closet where it had been for a decade or http://www.secuobs.com/revue/news/436560.shtmlhttp://www.secuobs.com/revue/news/436560.shtml Secuobs.com : 2012-02-07 02:49:01 - pagetable.com - by Sven Oliver SvOlli Moll the original German language version has been simultaneously posted on his blog This is an article about the 6502 processor about the topic how to waste a number of clock cycles stated in a register, in this case the X register The principle is simple you have a number of http://www.secuobs.com/revue/news/356305.shtmlhttp://www.secuobs.com/revue/news/356305.shtml Secuobs.com : 2011-10-14 00:15:45 - pagetable.com - by Julien Oster, reprinted with permission While it has become far less relevant for non-system developers to write assembly than it was a few decades ago, by now CPUs have nevertheless made it much more comfortable to do so Today we are used to a lot of things fancy indirect addressing modes with scale, a http://www.secuobs.com/revue/news/334680.shtmlhttp://www.secuobs.com/revue/news/334680.shtml Secuobs.com : 2011-07-18 11:08:01 - pagetable.com - by Mike Pall, published with permission This is a follow-up to Thomas Tempelmann's Story of FCopy for the C-64 Ok, I have to make a confession more than 25 years late I ve reverse-engineered Thomas Tempelmann s code, added various improvements and spread them around I guess I m at least partially responsible for the slew of http://www.secuobs.com/revue/news/317528.shtmlhttp://www.secuobs.com/revue/news/317528.shtml Secuobs.com : 2011-07-16 01:14:41 - pagetable.com - by Thomas Tempelmann, reprinted with permission Back in the 80s, the Commodore C-64 had an intelligent floppy drive, the 1541, ie an external unit that had its own CPU and everything The C-64 would send commands to the drive which in turn would then execute them on its own, reading files, and such, then send http://www.secuobs.com/revue/news/317327.shtmlhttp://www.secuobs.com/revue/news/317327.shtml Secuobs.com : 2011-07-05 11:51:26 - pagetable.com - This article is about a German-language podcast episode on the C64 Im Februar hat mich Tim Pritlove auf der Durchreise in Frankfurt abgefangen, wo ich mit einem Koffer voll mit zwölf Commodore 64 Motherboards in einem Hotelzimmer saß, und mit mir eine 2 Stunden und 42 Minuten lange Episode für Chaosradio Express aufgenommen Chaosradio Express http://www.secuobs.com/revue/news/315172.shtmlhttp://www.secuobs.com/revue/news/315172.shtml Secuobs.com : 2011-06-28 11:24:53 - pagetable.com - Richard Immers and Gerald G Neufeld Inside Commodore DOS the complete guide to the 1541 disk operating systemNorthridge, Calif Datamost, 1985ISBN 0-8359-3091-2 512 pages, 74 MB PDF In my quest to preserve retrocomputing documents, here is the invaluable book Inside Commodore DOS , which describes most of the internals of the Commodore 1541 disk drive The http://www.secuobs.com/revue/news/313934.shtmlhttp://www.secuobs.com/revue/news/313934.shtml Secuobs.com : 2011-06-21 11:18:54 - pagetable.com - Sometimes, freezeframe fun does not provide fun, but sadness In the Pixar movie Monsters Inc, you can see the following file of a child at 12 min 40 sec Monsters scare children at night, and this is how they keep track of them The file comes with a blueprint of the room, a list of http://www.secuobs.com/revue/news/312555.shtmlhttp://www.secuobs.com/revue/news/312555.shtml Secuobs.com : 2011-06-14 11:14:24 - pagetable.com - http://www.secuobs.com/revue/news/311010.shtmlhttp://www.secuobs.com/revue/news/311010.shtml Secuobs.com : 2011-06-07 11:10:54 - pagetable.com - Commodore Business MachinesCommodore 128 Programmer s Reference GuideNew York, NY Bantam Books, 1986ISBN 0-553-34378-5 756 pages, 246 MB PDF This book is an indispensable reference guide and sourcebook for anyone using the new and powerful Commodore 128 computer This machine has many new and exciting built-in features, such as the advanced BASIC programming language Version 70, superior http://www.secuobs.com/revue/news/309576.shtmlhttp://www.secuobs.com/revue/news/309576.shtml Secuobs.com : 2011-05-30 14:28:53 - pagetable.com - Ron Gilbert posted this as a comment on The Mansion Technical Aspects, I am re-posting it here as an article SCUMM script was a little odd When I first started designing the language, I was going to base it on Lisp I was use to using it to customize emacs that we used to http://www.secuobs.com/revue/news/307953.shtmlhttp://www.secuobs.com/revue/news/307953.shtml Secuobs.com : 2011-05-24 05:46:18 - pagetable.com - by enthusi This is a reprint from Vandalism News issue 52 Maniac Mansion is a true classic in many ways It s a classic example of smart game play versus photorealistic graphics that is lacking in so many modern productions and it s the first LucasArts Adventure that made use of the point and click verb http://www.secuobs.com/revue/news/306715.shtmlhttp://www.secuobs.com/revue/news/306715.shtml Secuobs.com : 2011-05-18 11:44:35 - pagetable.com - It seems that a lot of readers of pagetablecom are fans of SCUMM games like Maniac Mansion and at least one is their creator Here is a puzzle for you credits go to Bernhard Bauer In Zak McKracken, how can you get into the situation pictured below Note that you need the CashCard in order http://www.secuobs.com/revue/news/305548.shtmlhttp://www.secuobs.com/revue/news/305548.shtml Secuobs.com : 2011-05-11 07:23:36 - pagetable.com - In any version of Maniac Mansion, if one kid is in the hallway with Green Tentacle, any other kid even Syd and Razor will refuse to go up the stairs to that hallway I m not going up there that monster s got my friend Why is that C64 Nintendo Entertainment System MS-DOS Enhanced http://www.secuobs.com/revue/news/304004.shtmlhttp://www.secuobs.com/revue/news/304004.shtml Secuobs.com : 2011-04-15 21:43:52 - pagetable.com - http://www.secuobs.com/revue/news/298762.shtmlhttp://www.secuobs.com/revue/news/298762.shtml Secuobs.com : 2011-03-15 18:03:48 - pagetable.com - In a discussion, when pointing out inconsistencies in your opponent s opinion by giving two examples that you disagree with, remember that it can be made into a point against you, just by inverting the two examples plus minus some rhetorical decoration Here is an easy one, taken from a discussion on Facebook Liberals make no http://www.secuobs.com/revue/news/291763.shtmlhttp://www.secuobs.com/revue/news/291763.shtml Secuobs.com : 2011-03-08 07:28:45 - pagetable.com - If you read about operating system security, it seems to be all about how many holes are discovered and how quickly they are fixed If you look inside an OS vendor, you see lots of code auditing taking place This assumes all security holes can be found and fixed, and that they can be eliminated http://www.secuobs.com/revue/news/290058.shtmlhttp://www.secuobs.com/revue/news/290058.shtml Secuobs.com : 2011-02-08 11:28:23 - pagetable.com - Platforms like the Commodore 64 are still a lot of fun to work with, not only because the limitations make certain tasks a real challenge, but also because it is possible to use many interesting tricks on a bit- and cycle-level after all, the system is well-understood and practically all setups were identical This http://www.secuobs.com/revue/news/283622.shtmlhttp://www.secuobs.com/revue/news/283622.shtml Secuobs.com : 2011-02-01 11:45:25 - pagetable.com - Nobody doubts that the C64 was the greatest selling single computer model of all time, it even made it into the Guinness Book of World Records, but nobody quite knows how many it really was Most sources say 17 million, others say 22 or even 30 million With a high degree of confidence, I can http://www.secuobs.com/revue/news/282080.shtmlhttp://www.secuobs.com/revue/news/282080.shtml Secuobs.com : 2011-01-25 11:19:41 - pagetable.com - The Commodore Plus 4, the C16 and the C116 from 1984 were members of the 6502-based TED series, named after the 7360 TED Text Editing Device video controller The TED systems were basically the low-cost cousins of the C64 The overall system architecture and the video chip are very similar to the C64 s, but they lack http://www.secuobs.com/revue/news/280587.shtmlhttp://www.secuobs.com/revue/news/280587.shtml Secuobs.com : 2011-01-18 05:35:18 - pagetable.com - Hint White t-shirt get sued Black t-shirt do not get sued Oh, and Sony also fails, among other things, at the Spanish naming system In case you haven t watched the video yet, you should do so now Console Hacking 2010 I have a short cameo, repeating my age-old point that systems should be open, otherwise http://www.secuobs.com/revue/news/278856.shtmlhttp://www.secuobs.com/revue/news/278856.shtml Secuobs.com : 2011-01-14 20:50:51 - pagetable.com - The Final Cartridge III has been among the most popular Commodore 64 extensions, providing a floppy speeder, BASIC extensions, a machine language monior, a freezer and even a rarely used graphical desktop The major advantage compared to other C64 cartridges is the consistent way in which the Final Cartridge III extends the C64 experience As http://www.secuobs.com/revue/news/278329.shtmlhttp://www.secuobs.com/revue/news/278329.shtml Secuobs.com : 2011-01-04 20:47:38 - pagetable.com - Here is the video recording of my presentation Reverse Engineering the MOS 6502 CPU given at 27C3, on the low cost CPU that arguably launched the home computer revolution http://www.secuobs.com/revue/news/275763.shtmlhttp://www.secuobs.com/revue/news/275763.shtml Secuobs.com : 2010-12-26 21:04:31 - pagetable.com - 3510 transistors in 60 minutes http://www.secuobs.com/revue/news/274253.shtmlhttp://www.secuobs.com/revue/news/274253.shtml Secuobs.com : 2010-12-03 08:46:16 - pagetable.com - In my previous blog post, I was comparing how internet video providers like Hulu, Netflix, iTunes, Amazon and Zune handle interlaced material by comparing an episode of Futurama This time, let s see how rips from the BitTorrent network compare to these I managed to acquire nine different files I own several licenses for this episode, http://www.secuobs.com/revue/news/269114.shtmlhttp://www.secuobs.com/revue/news/269114.shtml Secuobs.com : 2010-11-30 07:48:35 - pagetable.com - In the days of CRT monitors, TV shows used to be broadcast in interlaced mode, which is unsupported by modern flat-panel displays All online streaming services and video stores provide progressive video, so they must deinterlace the data first This article compares the deinterlacing strategies of Apple iTunes, Netflix, Microsoft Zune, Amazon VoD and Hulu http://www.secuobs.com/revue/news/268225.shtmlhttp://www.secuobs.com/revue/news/268225.shtml Secuobs.com : 2010-11-23 11:27:06 - pagetable.com - Slashdot had a story recently on how in 1942, the allies were able to estimate the number of German taks produced based on the serial numbers of the tanks In 2010, a German hacker is doing the exact same thing with Xboxes This article describes the generic approach, shows some results, and provides previously unreleased http://www.secuobs.com/revue/news/266859.shtmlhttp://www.secuobs.com/revue/news/266859.shtml Secuobs.com : 2010-11-18 23:10:39 - pagetable.com - I m sure all users will immediately associate a Sony 35 Floppy Disk with save It s not like the stock icon library also had an OK button http://www.secuobs.com/revue/news/265902.shtmlhttp://www.secuobs.com/revue/news/265902.shtml Secuobs.com : 2010-11-16 12:03:48 - pagetable.com - 25 years after the introduction of the 32 bit Intel i386 CPU, all Intel compatibles still start up and wake up in 16 bit stone-age mode, and they have to be switched into 32 64 bit mode to be usable Wouldn t it be nice if a modern i386 x86_64 CPU started at least in 32 bit protected http://www.secuobs.com/revue/news/265125.shtmlhttp://www.secuobs.com/revue/news/265125.shtml Secuobs.com : 2010-11-14 14:00:32 - pagetable.com - by Stefan Tramm There are a lot of web-based computer emulators out there for ancient machines the Commodore 64 and MSX home computers or the more exotic Space Invaders arcade machines Such emulators are nice to play with but they are incomplete they lack an Input Output subsystem Emu8080 is the first known Javascript-based http://www.secuobs.com/revue/news/264733.shtmlhttp://www.secuobs.com/revue/news/264733.shtml Secuobs.com : 2010-11-01 21:09:56 - pagetable.com - Modern filesystems are highly optimized database systems that are a core function of modern operating systems They allow concurrent access by many CPUs, they keep locality up and fragementation down, and they can recover from crashes guaranteeing consistent data structures If you want to learn about the internals of modern filesystems, you can either read http://www.secuobs.com/revue/news/261561.shtmlhttp://www.secuobs.com/revue/news/261561.shtml Secuobs.com : 2010-10-28 09:18:24 - pagetable.com - If you try to set the clock in Lisa OS 31 to 2010, you re out of luck You can only enter years from 1981 to 1995 That s a span of 15 years why And what happens if the clock runs past the end of 1995 Well, it wraps around to 1 Jan 1980 But http://www.secuobs.com/revue/news/260538.shtmlhttp://www.secuobs.com/revue/news/260538.shtml Secuobs.com : 2010-10-27 01:53:45 - pagetable.com - http://www.secuobs.com/revue/news/260107.shtmlhttp://www.secuobs.com/revue/news/260107.shtml Secuobs.com : 2010-10-18 08:12:55 - pagetable.com - You might remember the hassle about the Commodore 64 emulator in the iPhone App Store about a year ago First it was approved, but then pulled again, because it allowed access to the C64 s BASIC general-purpose interpreters were not allowed After Apple relaxed this restriction, BASIC was added again So now it fills me http://www.secuobs.com/revue/news/257767.shtmlhttp://www.secuobs.com/revue/news/257767.shtml Secuobs.com : 2010-09-30 03:02:06 - pagetable.com - After 35 years of measuring the behaviour of the MOS 6502 CPU to better understand what is going on, the Visual6502 simulator finally allows us insight into the chip, so we can understand what the CPU does internally One interesting thing here is the question how the 6502 handles BRK, IRQ, NMI and RESET The http://www.secuobs.com/revue/news/252963.shtmlhttp://www.secuobs.com/revue/news/252963.shtml Secuobs.com : 2010-09-28 13:01:11 - pagetable.com - The MOS 6502 CPU was introduced in September of 1975, and while the documentation described the three shift rotate instructions ASL, LSR and ROL, the ROR instruction was missing the documentation said that ROR would be available in chips starting in June 1976 In fact, the reason for this omission was that the instruction, while http://www.secuobs.com/revue/news/252352.shtmlhttp://www.secuobs.com/revue/news/252352.shtml Secuobs.com : 2010-09-27 08:25:59 - pagetable.com - Everything can be expressed in bits It takes 4 kilobits to decompress ZIP data, 25 kilobits to kill a human, 43 megabits for a working Mac OS X kernel, and 10 120 bits to describe our universe What is the entropy complexity of the 6502 CPU, you might wonder You have probably already seen Visual 6502, a http://www.secuobs.com/revue/news/251900.shtmlhttp://www.secuobs.com/revue/news/251900.shtml Secuobs.com : 2010-09-17 01:44:16 - pagetable.com - In the talk Why Silicon Security is still that hard by Felix Domke at the 24th Chaos Communication Congress in 2007 in which he described how he hacked the Xbox 360, and bushing had a cameo at the end explaining how they hacked the Wii , I had a little part, in which I argued that http://www.secuobs.com/revue/news/247611.shtmlhttp://www.secuobs.com/revue/news/247611.shtml Secuobs.com : 2010-09-17 01:44:16 - pagetable.com - A while ago, an engineer from a respectable company for low-level solutions no names without necessity claimed that a certain company s new 4-way SMP system had broken CPUs or at least broken firmware that didn t set up some CPU features correctly While on the older 2-way system, all CPUs returned the same features using CPUID , http://www.secuobs.com/revue/news/247610.shtmlhttp://www.secuobs.com/revue/news/247610.shtml Secuobs.com : 2010-07-03 09:11:01 - pagetable.com - If you want to enable protected mode or paging on the i386 x86_64 architecture, you use CR0, which is short for control register 0 Makes sense These are important system settings But if you want to switch the pagetable format, you have to change a bit in CR4 CR1 does not exist and CR2 and CR3 http://www.secuobs.com/revue/news/237378.shtmlhttp://www.secuobs.com/revue/news/237378.shtml Secuobs.com : 2010-06-29 09:51:19 - pagetable.com - The MOS KIM-1 is a quite rare collector s item today So if you hold one in your hands, you better take some high resolution pictures of the board Here they are Note that this is the original revision of the board pre-Rev A , and the 6502 CPU is from week 51 of the year 1975 http://www.secuobs.com/revue/news/235992.shtmlhttp://www.secuobs.com/revue/news/235992.shtml Secuobs.com : 2010-06-24 07:14:28 - pagetable.com - There is only one way to find out all you need is a giant pile of money and a vending machine that sells soda for 125 If you put in a dollar note and press the return change button, you will get the dollar note back directly If you put in two dollar notes http://www.secuobs.com/revue/news/234470.shtmlhttp://www.secuobs.com/revue/news/234470.shtml Secuobs.com : 2010-05-25 02:06:47 - pagetable.com - I understand that there might be a good reason for Intel to add virtualization extensions to their CPU architecture Instead of fixing the x86 architecture to optionally make it Popek-Goldberg compliant and have all critial instructions trap if not run in Ring 0, they added non-root mode, a very big hammer that allows me to http://www.secuobs.com/revue/news/225202.shtmlhttp://www.secuobs.com/revue/news/225202.shtml Secuobs.com : 2010-05-05 08:06:02 - pagetable.com - Google is always right Exercise for the reader Change it http://www.secuobs.com/revue/news/218948.shtmlhttp://www.secuobs.com/revue/news/218948.shtml Secuobs.com : 2010-04-23 05:52:28 - pagetable.com - Here is a fun game for long car rides One person names a respected standard implemented by dozens of IT companies, and the other person names Microsoft s competing technology Example MPEG Audio MP3 AAC Windows Media Audio When you have run out of examples, you can try this game with other major players in the IT http://www.secuobs.com/revue/news/215203.shtmlhttp://www.secuobs.com/revue/news/215203.shtml Secuobs.com : 2010-04-20 23:14:48 - pagetable.com - In 1837, Charles Babbage designed a general purpose computer, the Analytical Engine, but never built it Between 1934 and 1937, Church, Turing et al defined the general purpose computer, but didn t design one In 1941, Konrad Zuse built the first general purpose computer, the Z3, but didn t know it was general purpose and didn t use it that http://www.secuobs.com/revue/news/214292.shtmlhttp://www.secuobs.com/revue/news/214292.shtml Secuobs.com : 2010-04-10 04:18:45 - pagetable.com - I am sitting here, working with my PC My keyboard and my mouse are connected wirelessly via Bluetooth and my monitor is hooked up through DVI The graphics card is sitting in a PCI slot, main memory is DDR-SDRAM, and my optical drive can do CDs and DVDs While my internal hard disk speaks the http://www.secuobs.com/revue/news/210700.shtmlhttp://www.secuobs.com/revue/news/210700.shtml Secuobs.com : 2010-04-02 01:34:41 - pagetable.com - http://www.secuobs.com/revue/news/208198.shtmlhttp://www.secuobs.com/revue/news/208198.shtml Secuobs.com : 2009-12-29 21:34:50 - pagetable.com - I just did a Lightning Talk at the 26th Chaos Communication Congress 26C3 about our new project libcpu , and it has already been picked up by Golemde and redditcom, so I might as well announce it here libcpu is an open source library that emulates several CPU architectures, allowing itself to be used as the CPU http://www.secuobs.com/revue/news/176499.shtmlhttp://www.secuobs.com/revue/news/176499.shtml Secuobs.com : 2009-11-23 07:25:05 - pagetable.com - Branch Delay Slots are one of the awkward features of RISC architectures RISC CPUs are pipelined by definition, so while the current instruction is in execution, the following instruction s will be in the pipeline already If there is for example a conditional branch in the instruction stream, the CPU cannot know whether the next instruction http://www.secuobs.com/revue/news/164019.shtmlhttp://www.secuobs.com/revue/news/164019.shtml Secuobs.com : 2009-10-31 21:32:19 - pagetable.com - Here is a new pagetable entry I like Intel I told you before how Intel messed up the x86 register nomenclature by extending A to AX A extended and then to EAX extended A extended Then AMD came and extended the register once more, giving it a more sane name RAX I also told you before how http://www.secuobs.com/revue/news/155988.shtmlhttp://www.secuobs.com/revue/news/155988.shtml Secuobs.com : 2009-09-08 12:04:09 - pagetable.com - A while ago, I complained about operating systems with overly complicated startup code that spends too much time in assembly and does hot have printf or framebuffer access until very late This second post is about printf Many systems use POST codes on i386 x86_64, ie writes to port 0 80 or debug LED for debugging, or have http://www.secuobs.com/revue/news/138676.shtmlhttp://www.secuobs.com/revue/news/138676.shtml Secuobs.com : 2009-09-01 10:48:42 - pagetable.com - The Apple Lisa is a quite rare collector s item today So if you hold one in your hands, you better take some high resolution pictures of the boards Here they are CPU Board I O Board Memory Board http://www.secuobs.com/revue/news/136469.shtmlhttp://www.secuobs.com/revue/news/136469.shtml Secuobs.com : 2009-08-25 07:25:51 - pagetable.com - It is a good time for statically recompiled versions of BASIC from old computers First there was Apple I BASIC Then came Commodore BASIC Now, due to overwhelming demand, we re proud to release TI-99 4A BASIC For those unfamiliar the TI-99 4A was a home computer by Texas Instruments released in 1981 Unusually for the http://www.secuobs.com/revue/news/134039.shtmlhttp://www.secuobs.com/revue/news/134039.shtml Secuobs.com : 2009-08-18 13:18:24 - pagetable.com - German Die Qualität dieses Scans ist furchtbar, aber wenigstens ist die PDF durchsuchbar Dittrich, S, Gelfand, R, Schemmel, J 1988 Amiga intern Düsseldorf Data Becker PDF, 718 S, 11 MB DAS STEHT DRIN In der dritten überarbeiteten Auflage finden Sie alles von der Hardware über den Betriebssystemkern EXEC bis zum DOS, alle entscheidenden Informationen zum Amiga Und http://www.secuobs.com/revue/news/131898.shtmlhttp://www.secuobs.com/revue/news/131898.shtml Secuobs.com : 2009-08-11 23:32:02 - pagetable.com - On Tuesday, Microsoft has released an Xbox 360 software update that overwrites the first stage bootloader of the system Although there have been numerous software updates for Microsoft s gaming console in the past, this is the first one to overwrite the vital boot block Any failure while updating this will break the Xbox 360 beyond http://www.secuobs.com/revue/news/130008.shtmlhttp://www.secuobs.com/revue/news/130008.shtml Secuobs.com : 2009-08-11 13:02:59 - pagetable.com - In many operating systems, I have seen overly complicated startup code Too much is done in assembly, and printf and framebuffer access is only available very late In the next three blog posts, I will show how this can be avoided In this post, I am showing how little assembly code is needed for startup Minimizing http://www.secuobs.com/revue/news/129827.shtmlhttp://www.secuobs.com/revue/news/129827.shtml Secuobs.com : 2009-08-04 12:57:52 - pagetable.com - In some i386 x86_64 assembly code my coworker was working on, there was a macro like this define ENDFUNC leave ret Having forgotten about the exact implementation of the macro, he then wrote a function that ended like this http://www.secuobs.com/revue/news/127797.shtmlhttp://www.secuobs.com/revue/news/127797.shtml Secuobs.com : 2009-07-28 11:36:05 - pagetable.com - Commodore computers up to BASIC 20 like the Commodore 64, the VIC-20 and the PET 2001 only had a very basic understanding of mass storage There were physical device numbers that were mapped to the different busses, and the KERNAL library had open , read , write and close functions that worked on these devices There were http://www.secuobs.com/revue/news/125713.shtmlhttp://www.secuobs.com/revue/news/125713.shtml Secuobs.com : 2009-07-21 09:01:00 - pagetable.com - Today s puzzle is about some code behaving horribly wrong Recently, I was working on some operating system project and hacking on the code to switch between privileged and non-privileged mode I could switch modes successfully and intercept traps when in non-privileged mode Then I wanted to check whether I could handle timer interrupts correctly, so I added http://www.secuobs.com/revue/news/122992.shtmlhttp://www.secuobs.com/revue/news/122992.shtml Secuobs.com : 2009-07-14 12:35:39 - pagetable.com - If you look at a hexdump of any version of the Logitech mouse driver for MS-DOS, you will see the following This is Copyright 1983 Microsoft 000007c0 http://www.secuobs.com/revue/news/120361.shtmlhttp://www.secuobs.com/revue/news/120361.shtml Secuobs.com : 2009-07-08 10:58:43 - pagetable.com - Corporate security thought it wasn’t the best idea: 1:06 min, 176 KBhttp://www.secuobs.com/revue/news/117965.shtmlhttp://www.secuobs.com/revue/news/117965.shtml Secuobs.com : 2009-07-01 10:00:15 - pagetable.com - The Copland project was Apple’s ill-fated attempt in the mid 1990s toreplace the aging classic Mac OS with a more modern operating systemthat had a microkernel, virtual memory and preemptive multitaskingInformation on Copland is scarce, therefore I have compiled 20 hard tofind Copland reference documents, as well as the 359 page http://www.secuobs.com/revue/news/115743.shtmlhttp://www.secuobs.com/revue/news/115743.shtml Secuobs.com : 2009-06-23 13:18:44 - pagetable.com - Bitfields are very common in low level C programming You can use themfor efficient storage of a data structure with lots of flags, or topass a set of flags between functions Let us look at the differentways of doing this The straightforward way to deal with bitfields isto do the Boolean logic http://www.secuobs.com/revue/news/112647.shtmlhttp://www.secuobs.com/revue/news/112647.shtml Secuobs.com : 2009-06-16 12:43:20 - pagetable.com - I happened to drive through Cupertino, CA, USA last Wednesday and endedup in this situation: Oh-oh, they got me But they were not after me,they escorted two vans onto some company’s campus Five police cars,two police motorcycles, and lots of people with suits and sunglassesFor some reason, this outfit doesn’t have the same http://www.secuobs.com/revue/news/110175.shtmlhttp://www.secuobs.com/revue/news/110175.shtml Secuobs.com : 2009-06-09 12:37:20 - pagetable.com - It makes sense for a stamp vending machine to have some limits and notprint any amount of stamps or stamps of any value The vendingmachines from the Deutsche Post are a little weird though: You canonly buy stamps worth 100 EUR at a time Makes sense The maximum facevalue for a stamp is http://www.secuobs.com/revue/news/107327.shtmlhttp://www.secuobs.com/revue/news/107327.shtml Secuobs.com : 2009-06-02 10:49:19 - pagetable.com - Sometimes it makes sense to label a surveillance camera But it rarelymakes sense to label the cables that lead to a surveillance camera ina public area of Parking Garage A at the San Francisco airport Thisjust invites you to do the “Splice and Dice” attack:http://www.secuobs.com/revue/news/104714.shtmlhttp://www.secuobs.com/revue/news/104714.shtml Secuobs.com : 2009-05-31 17:15:45 - pagetable.com - Update: Video recording available I am going to present The UltimateCommodore 64 Talk Everything about the C64 in 64 Minutes at the 25thChaos Communication Congress 2008 25C3 in Berlin on 29 Dec 2008 Thefollowing article, which will be printed in the Congress Proceedings,is supposed to give you an overview of what I http://www.secuobs.com/revue/news/103891.shtmlhttp://www.secuobs.com/revue/news/103891.shtml Secuobs.com : 2009-05-31 17:15:45 - pagetable.com - Link: Thanks to FXMBR for providing the flash video Additionally, hereare a few links to the video recording of the talk: Bittorrent OGG,Mirror 1 OGG, Mirror 1 WMV, Mirror 2 OGG, Mirror 2 WMV, Mirror3 OGG, Mirror 3 WMV, Mirror 4 OGG, Mirror 4 WMV, Mirror 5OGG The OGG version seems to be in http://www.secuobs.com/revue/news/103890.shtmlhttp://www.secuobs.com/revue/news/103890.shtml Secuobs.com : 2009-05-31 17:15:45 - pagetable.com - Download the Apple Keynote 08 presentationhttp://www.secuobs.com/revue/news/103889.shtmlhttp://www.secuobs.com/revue/news/103889.shtml Secuobs.com : 2009-05-31 17:15:45 - pagetable.com - This article is in German, since it is about the German TV show“Supergrips” and how the scoreboard was implemented Supergrips wareine Spielshow des Bayerischen Rundfunks in Zusammenarbeit mit demMitteldeutschen Rundfunks, die von 1988 bis 1995 ausgestrahlt wurdeWas besonders interessant war: Die Spielwand wurde auf einem Amigagemacht, in einer Kombination aus Basic und http://www.secuobs.com/revue/news/103888.shtmlhttp://www.secuobs.com/revue/news/103888.shtml Secuobs.com : 2009-05-31 17:15:45 - pagetable.com - Van Someren, Alex, and Nic Van SomerenArchimedes Operating System ADabhand guidePrestwich: Dabs Press, 1991ISBN 1-870336-48-8320pages, 75 MB PDF For Archimedes users who take their computingseriously, this guide to the Operating System gives you a real insightinto the micro’s inner workings The book is applicable to any modelof Archimedes whether running the http://www.secuobs.com/revue/news/103887.shtmlhttp://www.secuobs.com/revue/news/103887.shtml Secuobs.com : 2009-05-31 17:15:45 - pagetable.com - The Z3 by Konrad Zuse was the world’s first working digitalTuring-complete computer It did floating point arithmetic, had tworegisters accessible to the programmer, was microcoded, and clocked atabout 5 Hz The original Z3 was destroyed in the second world war TheDeutsches Museum in Munich has the only working replica, built by Zusehttp://www.secuobs.com/revue/news/103886.shtmlhttp://www.secuobs.com/revue/news/103886.shtml Secuobs.com : 2009-05-31 17:15:45 - pagetable.com - My last blog post showed the Zuse Z3 1939-1941, the world’s firstworking digital Turing-complete computer Let’s go back two moresteps: The Zuse Z1 1936-1938 shared its design with the Z3: It readits program from punched film and used floating point as its internalrepresentation of numbers But since it was all mechanical, http://www.secuobs.com/revue/news/103885.shtmlhttp://www.secuobs.com/revue/news/103885.shtml Secuobs.com : 2009-05-31 17:15:45 - pagetable.com - Every touristy place has them: Souvenirs with given names on them If youhave an uncommon name, or a friend with an uncommon name, you mightlook through the whole collection - and notice that they have genericones like “#1 FRIEND” i case you really don’t find your friend’sname, and, sometimes, generic ones http://www.secuobs.com/revue/news/103884.shtmlhttp://www.secuobs.com/revue/news/103884.shtml Secuobs.com : 2009-05-31 17:15:45 - pagetable.com - I moved cbmbasic development to SourceForge and released version 10,which has the following added features: RDTIM/SETTIM support GeorgeTalbot LOAD”$” on Win32 Lorenzo RND is now random Wolfram SangThe C code now hooks into the cbmbasic plugin infrastructure Thislets developers add additional statements, functions etc Right now,you can turn this on with “SYS 1″ turn http://www.secuobs.com/revue/news/103883.shtmlhttp://www.secuobs.com/revue/news/103883.shtml Secuobs.com : 2009-05-31 17:15:45 - pagetable.com - The heritage of different operating systems has been discussed manytimes Mac OS X includes code from Mach and BSD, AmigaOS is based onTRIPOS, MS-DOS is a CP/M-86 clone and Windows NT is modeled after VMSBut what machines and operating systems were used forcross-compilation and bringup of these systems In order to http://www.secuobs.com/revue/news/103882.shtmlhttp://www.secuobs.com/revue/news/103882.shtml Secuobs.com : 2009-05-31 17:15:45 - pagetable.com - Many hotels at least in the USA equip their room TVs with a “LodgeNet”entertainment system The TV will show regular free televisionchannels, but also have an interactive channel controlled by theremote that features video on demand and video games The setupconsists of a regular TV, a set-top-box and a Nintendo 64 controllerIf http://www.secuobs.com/revue/news/103881.shtmlhttp://www.secuobs.com/revue/news/103881.shtml Secuobs.com : 2009-05-31 17:15:45 - pagetable.com - Try this in kernel mode: uint64_t null_idtr = 0; asm"xor %%eax, %%eax;lidt %0; int3" :: "m" null_idtr; This can be quite helpful whendoing operating system development on an i386/x86_64 system You canuse this for the regular restart case or when a kernel panic issupposed to restart immediately and you cannot make any assumptions onhttp://www.secuobs.com/revue/news/103880.shtmlhttp://www.secuobs.com/revue/news/103880.shtml Secuobs.com : 2009-05-31 17:15:45 - pagetable.com - Operating system vendors face this problem once or twice a decade: Theyneed to migrate their user base from their old operating system totheir very different new one, or they need to switch from one CPUarchitecture to another one, and they want to enable users to run oldapplications unmodified, and help developers http://www.secuobs.com/revue/news/103879.shtmlhttp://www.secuobs.com/revue/news/103879.shtml Secuobs.com : 2009-05-31 17:15:45 - pagetable.com - In the first Terminator movie, the audience sees the world from theT-800’s view several times It is well-known that in two instances,there is 6502 assembly code on the T-800’s HUD, and many sites haveanalyzed the contents: It’s Apple-II code taken from Nibble MagazineHere are HD versions of the shots, thanks to http://www.secuobs.com/revue/news/103878.shtmlhttp://www.secuobs.com/revue/news/103878.shtml Secuobs.com : 2009-05-31 17:15:45 - pagetable.com - The bootsector of DOS 10 is celebtaring its 28th birthday today itcontains the timestamp “7-May-81″, so let’s look at it more closelyHere it is: 00000000 eb 2f 14 00 00 00 60 00 20 37 2d 4d 61 79 2d 38| 7-May-8| 00000010 31 00 00 00 00 00 00 00 http://www.secuobs.com/revue/news/103877.shtmlhttp://www.secuobs.com/revue/news/103877.shtml Secuobs.com : 2009-05-31 17:15:45 - pagetable.com - My last post was about the internals of the DOS 10 bootsector Thistime, let’s look at the next stage of the DOS 10 boot process, thehardware abstraction library IBMBIOCOM CP/M and DOS History Let usfirst look at the historical background: CP/M was an 8 bit operatingsystem that existed for virtually every computer with http://www.secuobs.com/revue/news/103876.shtmlhttp://www.secuobs.com/revue/news/103876.shtml Secuobs.com : 2009-05-31 17:15:45 - pagetable.com - The core of the Amiga Operating systems consists of the three majorcomponents Exec scheduling, memory management, IPC, Intuition GUIlibrary and AmigaDOS process and file management AmigaDOS is basedon the Tripos operating system which Commodore bought becausedevelopment of their own DOS subsystem failed to meet deadlines Inthis article, I am presenting http://www.secuobs.com/revue/news/103875.shtmlhttp://www.secuobs.com/revue/news/103875.shtml Secuobs.com : 2009-05-31 17:15:45 - pagetable.com - The Apple Lisa from 1983 was the first consumer-class computer with agraphical user interface and significantly more advanced than the 1984Macintosh, which had a similar UI, but a comparatively primitiveunderlying OS Here, I present a searchable PDF of the rare “OperatingSystem Reference Manual for the Lisa” 1983, as well as a http://www.secuobs.com/revue/news/103874.shtmlhttp://www.secuobs.com/revue/news/103874.shtml