Hello, I've comipled a project with KEIL in order to generate an Hex code (that is stored in ROM on a chip). 2 days passed, I recomipled the exact same code, and the results of the Hex code are different, and I can see that the compiler changed the address of the internal variables etc. I need to restore the old results, somehow!! I have all the object files of the old compilation. Is there any way to load them? Anyone knows why the compilation has changed (though the C files have not changed)? I know that the order of the files written in the left window of the KEIL changes the compilation, but this order has not changed as well. Please help...... Best Regards, Noam -----------
We certainly have a number of people (me included) who take work away at the end of the day and continue with it at home so do we, and those that do work with a docked laptop
Erik
"so do we, and those that do work with a docked laptop"
But it's so much easier to carry around a copy of the complete project on USB stick than carrying even the lightest laptop.
Their loss.
A good laptop has a hard time competing with a good stationary machine.
Even with a docking station, you don't get the same options for dual or tripple displays, use of native RS-485 instead of USB-to-RS485 or RS-232 to RS-485, ...
And it's harder to play doom :-) :-) :-)
Even with a docking station, you don't get the same options for dual or tripple displays
PS one 'p' in triple
I'll have to give the other p an early evening then :)
I didn't say you can't get three displays with a laoptop. I say that you don't get the same options.
With a stationary PC, I can use a dual-headed board. Or a quad-headed. Or two dual-headed. Or one ligthning fast and a slow. Or two lightning-fast and one or two slow. If I need RAID, I'm free to select which solution. Multiple NIC? 2 gbit NIC is normally the standard now.
A laptop can do very much, but everything it does is a compromise. Even the portability is a compromise since you want it large enough to be useful with a big and well-lit display, but small enough to be easy to carry and with long battery life. It is perfect when you need to fix something out-of-office, but I still think it'll take maybe two or three years for the laptops to close the gap. And probably not by own power, but by the stagnation of the stationary offerings.
I didn't say you can't get three displays with a laoptop. I say that you don't get the same options with everything going USB that will soon be different.
No. At least not until we get the next generation of FW or USB. 480Mbit USB is way too little for a gbit NIC. You can run a PowerPoint presentation with a USB-connected graphics card, but a number of applications suffers. And it is way slower than eSATA. And how fun is it with several external devices that requires individual power adapters?
Most laptops have an optical drive. Many can write DVD disks. But how many have DVD-RAM? How many can read BluRay? How fast are they at searching, if you boot a Live-CD?
Many laptops have a memory card slot. But how many have the four slots needed to handle SD, CF, MMC and MemoryStick?
Good laptops have a 7200rpm HDD. What options are there for 10k or 15k drives? Or running more than one? Yes, you may put a second drive in the docking station or an external cabinet. But you can't have a mirrored system drive, since the mirror would fail the same moment you unplug the laptop from the docking station.
Having to bring extra devices on a trip means extra weight and shorter battery time.
A laptop really is a jack-of-all-trades. It can do most things, but often not as good.
I use a laptop as rarely as at all poissible.
I agree, to some extent, with your argument, but for program development you do not need the fancy stuff you mention. Of course uf you play a fast game off a blue ray disk, things are different, but my viewpoint is program development and a bit of e-mail, documents and interenet nothing else
Now, we are even further from the original topic ;)
I do most work on a stationary machine, but regularly need/like a laptop.
No, no comment was based on use for gaming. That is a separate issue.
A DVD-RAM is a wonderful way of backing up files, if you are not connected to a large server with tape backup or similar. It is way quicker than writing multi-session disks when you want a copy of a project tree. Memory cards will get there, but are currently a bit too expensive or too slow. Right now, a DVD-RAM is probably the best replacement for a floppy drive.
A BluRay writer is quite powerful to backup full partitions, since you can write 25GB / disk. 50GB with dual-layer disks. Not as much data/disk as a better tape drive, but really fast and simple. And big tape drives are very expensive. And you may get into trouble finding someone else with a similar tape drive if your own fail and you need to get access to the data.
Some debuggers are a bit stupid - they base their display refresh speed on number of changes to watched variables/registers, and not to the time since the last change. I have seen more than one tool where the screen refresh is a major factor for number of instructions simulated/second. A good tool should obviously use a timer and not refresh more than 10 times/second or whatever seems reasonable. But if you look outside the embedded world, some developers do develop multimedia products. It may require a gaming-compatible machine (possibly the next generation still not available for mainstream use) to test the programs.
Having a mirrored system disk can be quite nice. A HDD fails quite seldom. Maybe one drive in 100 every year. But when a drive fail, it tends to fail at a bad time. With a mirror you can continue. Just pick up a new drive and connect and let it synchronize the next night if the tools doesn't support low-speed synchronization while you continue to use the machine.
People working with distributed applications may need very high network transfer speeds, to simulate a huge number of concurrent clients.
Working with database projects may require RAID-5, RAID-6, RAID-10, ... for additional seek speed and transfer bandwidth.
The requirements varies quite a lot, depending on what the machine is intended for. A laptop is still only king when portability is required. For most other special needs, it will loose. Possibly by quite a lot.
But since he requirements varies so much, it is quite often advantageous to have more than one computer. And then you want a license that allows more than one installation, as long as it is for a single user.
People don't find it strange if you have more than one pencil, or more than one notepad, or more than one screw driver. Why should there be any difference with computers? They are tools, and I want to be able to select my tools - how many and what type - based on my own requirements. If the software for each computer costs five times as much as the computer, I don't really have that ability to choose anymore.
To keep down the number of computers and energy costs, virtual machines may sometimes be used. But quite a lot of application licenses forbids installation in a virtual machine, or requires one license for each virtual machine. It can often be quite hard to be lawful :(
as often before: different perspective
if you are not connected to a large server with tape backup or similar. we are
may need very high network transfer speeds we have that
But since he requirements varies so much, it is quite often advantageous to have more than one computer. And then you want a license that allows more than one installation, as long as it is for a single user. how very true and, if the software came with fingerprint ID, that would be possible :) . Unfortunately Joe TheThief have no problem signing on as Paul Honest, so the vendors have no option.
It can often be quite hard to be lawful :( as long as you stick to "the intent of the law" I doubt anyone will hunt you down.
Absolutely. I don't think any of the people in our organisation could operate with the new licensing structure. We've already stopped renewing the maintenance on C51 as we don't intend to upgrade beyond V7, shortly we'll be buying a raft of ARM licenses and I'm sad to say they won't be Keil for that very reason. At a rough estimate that's 1.2 million USD loss up front plus whatever the annual maintenance comes to.