Find content
Not Telling
I learned the other day that there is an opcode in the instruction sets of several old processors named HCF. This stands for "Halt, Catch Fire".
It locks the processor from accepting any other instructions, and beginnings toggling the bus lines as rapidly as possible. In some configurations, it's been known to actually burn the lines out and/or set fire to the machine. The only way to stop it is a hard-reboot.
I have no idea why this would ever be included in an instruction set, but it was originally undocumented and later discovered. Thought you guys would find it interesting.
Topics I've Started
Nerf Sniper Rifle
15 April 2012 - 07:58 PM
In order to get ready for the humans vs zombies game I just returned from, my friend and I spend a week building this in our machine shop: a bolt action, shell ejecting, gas powered nerf sniper rifle. It's so long it needs to be carried in two parts.
The co2/HPA cannister is not attached here. The propellant passes through the low-pressure regulator (which takes it down to around 20-30 PSI), and into the expansion chamber. The shell is loaded into the breach and the bolt is locked forward using the handle. The smaller red handle near the back is the trigger. After the dart is fired, you rack the bolt to eject the shell through the bottom of the reciever.
It makes the most satisfying whump in the world when you fire it. And the shell makes a nice clack when you eject it.
The co2/HPA cannister is not attached here. The propellant passes through the low-pressure regulator (which takes it down to around 20-30 PSI), and into the expansion chamber. The shell is loaded into the breach and the bolt is locked forward using the handle. The smaller red handle near the back is the trigger. After the dart is fired, you rack the bolt to eject the shell through the bottom of the reciever.
It makes the most satisfying whump in the world when you fire it. And the shell makes a nice clack when you eject it.
