Spinning Heads and Busting Spooks
Q: When is a disk drive not a disk drive? A: When it becomes your next memory chip.
We’ve seen how flash memory chips are steadily replacing hard disk drives in MP3 players, laptop computers, and all sorts of embedded systems. Now, in a weird reversal of technology fortunes, disk-drive technology is moving into nonvolatile memory chips.
ARM's Race Escalates with Cortex-A9
In military parlance, an Osprey is a propeller-driven airplane that takes off and lands vertically, like a helicopter. The Osprey tilts its wings 90 degrees, the props pull it straight up, and the wings flip back again for conventional flight. Clever engineering, but a bit ungainly to look at.
Over in the less dangerous but equally contentious microprocessor world, ARM has also hatched its own Osprey, this one officially named the ARM Cortex-A9. The new A9 will be capable of 2-GHz clock rates, an unheard-of speed for an ARM core. The previous-generation A8 was barely able to make 1 GHz (see Embedded Technology Journal, July 28, 2009, “Better, Stronger, Faster), and even that required some silicon sleight of hand from Intrinsity. At 2 GHz, the new A9 becomes the most potent weapon from the ARM’s dealer.