Some Largos information
Saturday, June 6th, 2009I’ve posted a brief feature list of Largos on its own page - you can find it under “Pages” on the left navigation bar.
:-)
Microcontrollers Explored
I’ve posted a brief feature list of Largos on its own page - you can find it under “Pages” on the left navigation bar.
:-)
I’m working on Largos, my LMM operating system for the Propeller.
I am trying to get a decent “technolgy preview” ready for UPEW 2009 - and today I’ve been able to start writing code that accesses the kernel via my message passing object.
The message passing object is currently written in Spin, however the kernel is still able to process almost 2300 null messages (messages that don’t do anything except acknowledge that they executed) per second on an 80MHz Propeller!
The messaging overhead is quite acceptable for something written in Spin: 0.47ms
As time progresses, I will be replacing the Spin components with LMM code - I then expect the messaging overhead for LMM programs to be on the order of 5us-10us for null messages, or a speed increase of approximately 50x-100x.
Availability: mid-June, 2009
Ever since I managed to scrounge some old 6.25MHz crystals, I’ve loved the idea of running my Propellers at 100MHz. The idea of accurately controlling timing down to 10ns was EXTREMELY attractive.
Unfortunately no one currently manufactured 6.25MHz crystals, and getting one-off special order crystals, or even tunable oscillators at 6.25MHz is cost prohibitive compared to the nice, standard, and cheap 5.0MHz crystals.
To make a long story short, I decided to have them manufactured for me
My web store is not yet set up, I am working on it but the other products I intend to launch at UPEW 2009 are currently taking precedence; however I will soon be able to fill orders anywhere from one crystal, to tens of thousands - at prices only slightly higher than what Parallax sells 5.0MHz crystals for.
I can’t wait to run all my props at 100MHz!!!!!
Think of the advantages:
I can’t wait to get the first shipment; its due pretty soon