Has anyone used these uM-FPUs?

[Konrad]

I've recently been looking through FPUs and found the Micromega site (http://micromegacorp.com/pbp.html), they offer the uM-FPU V3.x (http://micromegacorp.com/umfpu-v3.html), the simpler uM-FPU V2.x (http://micromegacorp.com/umfpu-v2.html), and the "new" uM-PWM1 Servo Coprocessor (http://micromegacorp.com/umpwm1.html).

The FPUs interest me because my projects make heavy use of precision position/movement vectors where slow FPU number crunching always hurts. I've never used features like NMEA parsing (possibly a new toy to tinker with). The uM-PWM1 is entirely unappealing to me; better parts that cost less are available.

These all look like coded (and presumably codelocked) dsPIC devices ... to me they seem a little overpriced but they do advertise a few fairly impressive specs.

Has anyone ever used these?

Has anyone tried to program their own FPU part?

Any thoughts on whether using these parts (instead of programming your own FPU routines) would actually increase computing performance? I currently code FPU libary functions (slow) or use dedicated uP-FPU parts (expensive).

[Neodymium]

Don't listen to the spambot, Konrad...:P I'm no expert, but am sure there are others who will respond....LOL

[Stonerboy779]

Neo the bot necroed the thread i am sure the OP has there answer by now.

[Neodymium]

Neo the bot necroed the thread i am sure the OP has there answer by now.

You have a keen eye my friend, I should be paying more attention...:D

[Konrad]

I think the lack of response is answer enough for my ancient questions, lol.

[crenn]

Never used them, looked at them but it would sometimes just be faster to use the Software Floating Point Calculations than offloading them to an external processor.

Now a days, I'd just suggest a STM32F4 or another brand of the Cortex-M4s.

I remember I looked at this thread, I could have sworn I replied.

[Konrad]

I just use better/faster micros now ... they're helluva lot cheaper than they were two years ago when I posted this topic. These Micromega parts seem entirely obsolete, perhaps good for hobbyists because of their simplicity (but then again, not good because they're not reprogrammable or open source). I imagine that not a lot of them were ever sold anyhow, dead-end technology.