Of course, IBM wouldn't release any API specs for the operating system, so you basically limited to porting Unix apps.
That isn't true. I have the IBM OS/2 Programmer's Library on CD and paper. It has all the API documentation that you could want. Just because IBM didn't give it away for free doesn't mean that it doesn't exist.
Whatever Lou Gerstner did to bring them round was miraculous, but have they really learnt from past mistakes? Not if they are still supporting a dead dog like OS/2.
One of the reasons that I like IBM is that they support customers running old and "obsolete" hardware and software. Unlike Microsoft and many other companies, that tell you to get fscked if you aren't running the latest version of the product or if the product has been discontinued.
NASA uses OS/2 in some of its telemetry processing systems, data acquisition/reduction systems and embedded control systems. When these systems were developed, OS/2 was the best operating system for the task. It was a "real" 32-bit operating system that had a GUI and ran on PC hardware. Windows NT and Linux are currently more popular for new systems development on PCs.
In industrial and military/government computer systems, you don't throw away working hardware and software without a good technical or financial justification. It doesn't matter if the system can't run the latest games and Microsoft bloatware, these aren't general purpose desktop computers running word processors and spreadsheets.
It means that the device specific software is in the application instead of the kernel. This is OK for things like industrial control and data acquisition, where the programmer writes a custom application for a specific task. It is useless if you want a standard device driver for a sound card, video card etc. The operating system and its applications assume that each class of device driver, such as sound or tape, provides a standard set of features specific to that class. The driver provided with this software does not provide those features. Every application that uses the device driver must include device specific code for the hardware that it supports. It is similar to games on MS-DOS where the sound and video drivers were part of the game, not the operating system.
This looks like a Linux version of some software that is available for NT. It isn't a kit to write universal device drivers, it's a Linux device driver that is an agent for user-mode applications, allowing them access to kernel-mode memory addresses and I/O ports. This lets you access I/O boards from an application without having to write a driver.
Increasing the diameter of the disk makes it more difficult for the head positioning servo-mechanisms to keep the head over the track. You would have to reduce the track density and/or the spindle speed.
There is still a need for large capacity, non-volatile memory devices that do not have moving parts. Disk drives are too sensitive to shock, temperature extremes and low air pressure. I've read that mountaintop astronomical observatories (higher than 10,000 feet) have problems with disk drive reliability.
There's actually a name (which I can't remember just now) for this effect, and it's in at least 2 or 3 of my electronics texts and references that're all packed up somewhere, so I'll let someone else come up with it and get the mod points.
Someone once said that the original series was Wagon Train in space. It wasn't great science fiction, but it was a masterpiece in comparison to My Mother the Car.
The U.S. military has been doing this for years. All that you need is a CDMA spread spectrum system with a high chip rate driven by a cryptographically secure PN sequence generator. Cesium beam atomic clocks are used to synchronize the transmitter and receiver.
E. The EU mandates the use of strong encryption on all communication links that terminate in EU member countries. Other countries follow the EU's example. After several years, Echelon is shut down due to its ineffectiveness.
Constitution of the United States of America
Article I, Section 9
No Tax or Duty shall be laid on Articles exported from any State.
That should be the end of the discussion, at least concerning the imposition of state sales taxes on out-of-state vendors. A State is free to tax or not tax sales of goods within their borders. They do not have the power to impose their taxes on the citizens of other states.
Why not deport the SOB to a country more in tune with his thought processes, say, North Korea.
On a more realistic note, Parliament should reform the libel law to be more like the U.S. law. The plaintiff should have to show that the defendant knew, or should have known, the statement to be false. Statements of opinion, such as "Laurence Godfrey is a litigious twit", should not be actionable.
Actually I thought the descision to drop Alpha/NT was Microsoft's? I could be wrong tho'.
Compaq decided to stop paying for the Alpha version of NT and Microsoft dropped the product since they weren't willing to pay for it out of their own pocket. Microsoft dropped the MIPS and PPC versions of NT under similar circumstances. Supposedly, Microsoft still uses Alpha systems for Win64 work due to the lack of iA64 hardware.
A dry circuit is not connected to the central office switching equipment. That means that you will not see the usual -48 VDC battery power on the pair.
These type of lines used to be cheap and plentiful when they were primarily used to connect burglar alarm monitoring companies to their customers.
When people discovered that they were great for cheap high-speed data links, Ma Bell pulled the tariff and stopped renting dry pairs. She didn't want competition for her grossly overpriced ISDN and T1 circuits.
Bell Titanic is going to be the first against the wall when the revolution comes.
Automatic weapons have been outlawed in almost every circumstance in America for quite a long time.
No, automatic weapons are not illegal, at least not under federal law, your state's laws may differ.
With the appropriate BATF paperwork you can legally purchase an automatic weapon. It is expensive and the paperwork is a major pain in the ass, including fingerprints, a criminal background investigation and the signature of your local law enforcement official.
There has been only one legally purchased automatic weapon used in a crime, and that crime was committed by a police officer.
Re:Old Motorola chips used to exhibit this behavio
on
Your CPU Will Explode
·
· Score: 2
It was the Motorola 6800. The HCF instruction did not destroy the CPU, it caused it to go into a state where it continually incremented the contents of the memory address register. This was actually useful for debugging external address decoding logic. A hardware reset would restore normal operation.
I think it is possible. Years ago, I plugged a ribbon cable in backwards and was rewarded with a loud bang. Disassembly of the equipment revealed a plastic DIP IC package with a small crater where the silicon die used to be. The reversed cable had resulted in +15V and GND being swapped on the chip power pins.
Firewire supports isochronous data transfers, see this page for more info. Unlike Ethernet, Firewire can offer guarantees on delay, throughput and jitter. Firewire is ideal for multimedia and real-time applications. Ethernet provides best effort delivery with no guarantees.
As for America's involvement, it managed to get half the ships sunk on the east coast because the US government was too big headed to acknowledge intelligence from Bletchley about a fleet of u-boats heading across the Atlanic.
It was more complicated than that. Adm. King was slow to institute a convoy system and he didn't like the Brits. The Royal Navy also had to relearn the lessons of World War I u-boat warfare the hard way. There have been several good books written on Operation Drumbeat/Paukenschlag that cover this in detail.
Real-Time is about predictability and timing guarantees, not high speed. Features that improve speed, such as cache and virtual memory, are drawbacks in a real-time system. They introduce uncertainty into the analysis of the system's timing.
Slashdot Mirror
That isn't true. I have the IBM OS/2 Programmer's Library on CD and paper. It has all the API documentation that you could want. Just because IBM didn't give it away for free doesn't mean that it doesn't exist.
One of the reasons that I like IBM is that they support customers running old and "obsolete" hardware and software. Unlike Microsoft and many other companies, that tell you to get fscked if you aren't running the latest version of the product or if the product has been discontinued.
In industrial and military/government computer systems, you don't throw away working hardware and software without a good technical or financial justification. It doesn't matter if the system can't run the latest games and Microsoft bloatware, these aren't general purpose desktop computers running word processors and spreadsheets.
It means that the device specific software is in the application instead of the kernel. This is OK for things like industrial control and data acquisition, where the programmer writes a custom application for a specific task. It is useless if you want a standard device driver for a sound card, video card etc. The operating system and its applications assume that each class of device driver, such as sound or tape, provides a standard set of features specific to that class. The driver provided with this software does not provide those features. Every application that uses the device driver must include device specific code for the hardware that it supports. It is similar to games on MS-DOS where the sound and video drivers were part of the game, not the operating system.
This looks like a Linux version of some software that is available for NT. It isn't a kit to write universal device drivers, it's a Linux device driver that is an agent for user-mode applications, allowing them access to kernel-mode memory addresses and I/O ports. This lets you access I/O boards from an application without having to write a driver.
The Bell 212A modem used differential PSK with four phases, encoding 2 bits per symbol at 600 baud and 1200 BPS.
At the risk of being pedantic, it's octets, not bytes. A byte is usually 8 bits, but it can be other sizes.
Increasing the diameter of the disk makes it more difficult for the head positioning servo-mechanisms to keep the head over the track. You would have to reduce the track density and/or the spindle speed.
There is still a need for large capacity, non-volatile memory devices that do not have moving parts. Disk drives are too sensitive to shock, temperature extremes and low air pressure. I've read that mountaintop astronomical observatories (higher than 10,000 feet) have problems with disk drive reliability.
Capture Effect
Someone once said that the original series was Wagon Train in space. It wasn't great science fiction, but it was a masterpiece in comparison to My Mother the Car.
The U.S. military has been doing this for years. All that you need is a CDMA spread spectrum system with a high chip rate driven by a cryptographically secure PN sequence generator. Cesium beam atomic clocks are used to synchronize the transmitter and receiver.
E. The EU mandates the use of strong encryption on all communication links that terminate in EU member countries. Other countries follow the EU's example. After several years, Echelon is shut down due to its ineffectiveness.
That should be the end of the discussion, at least concerning the imposition of state sales taxes on out-of-state vendors. A State is free to tax or not tax sales of goods within their borders. They do not have the power to impose their taxes on the citizens of other states.
On a more realistic note, Parliament should reform the libel law to be more like the U.S. law. The plaintiff should have to show that the defendant knew, or should have known, the statement to be false. Statements of opinion, such as "Laurence Godfrey is a litigious twit", should not be actionable.
Compaq decided to stop paying for the Alpha version of NT and Microsoft dropped the product since they weren't willing to pay for it out of their own pocket. Microsoft dropped the MIPS and PPC versions of NT under similar circumstances. Supposedly, Microsoft still uses Alpha systems for Win64 work due to the lack of iA64 hardware.
A dry circuit is not connected to the central office switching equipment. That means that you will not see the usual -48 VDC battery power on the pair.
When people discovered that they were great for cheap high-speed data links, Ma Bell pulled the tariff and stopped renting dry pairs. She didn't want competition for her grossly overpriced ISDN and T1 circuits.
Bell Titanic is going to be the first against the wall when the revolution comes.
Assault rifles are useful for killing fascists and thugs, state sponsored or not, seems like a legitimate purpose to me.
No, automatic weapons are not illegal, at least not under federal law, your state's laws may differ.
With the appropriate BATF paperwork you can legally purchase an automatic weapon. It is expensive and the paperwork is a major pain in the ass, including fingerprints, a criminal background investigation and the signature of your local law enforcement official.
There has been only one legally purchased automatic weapon used in a crime, and that crime was committed by a police officer.
It was the Motorola 6800. The HCF instruction did not destroy the CPU, it caused it to go into a state where it continually incremented the contents of the memory address register. This was actually useful for debugging external address decoding logic. A hardware reset would restore normal operation.
I think it is possible. Years ago, I plugged a ribbon cable in backwards and was rewarded with a loud bang. Disassembly of the equipment revealed a plastic DIP IC package with a small crater where the silicon die used to be. The reversed cable had resulted in +15V and GND being swapped on the chip power pins.
Firewire supports isochronous data transfers, see this page for more info. Unlike Ethernet, Firewire can offer guarantees on delay, throughput and jitter. Firewire is ideal for multimedia and real-time applications. Ethernet provides best effort delivery with no guarantees.
It was more complicated than that. Adm. King was slow to institute a convoy system and he didn't like the Brits. The Royal Navy also had to relearn the lessons of World War I u-boat warfare the hard way. There have been several good books written on Operation Drumbeat/Paukenschlag that cover this in detail.
Real-Time is about predictability and timing guarantees, not high speed. Features that improve speed, such as cache and virtual memory, are drawbacks in a real-time system. They introduce uncertainty into the analysis of the system's timing.