The Propeller's built-in font was designed to run in this mode, but for a long time it wasn't looking possible. I think this driver would be great for these self-hosting languages that are being discussed. Note the 3D bevel characters and easy-to-read 64x24 text. There's also some graphics in this example just to show that it can be done. This demo was thrown together, but it exercises the tile driver thoroughly. It shows the two built-in mouse cursors, plus a custom one.

The driver itself is 271 longs w/12 VARs. It requires 6KB of RAM for the tile array.

Ray's Note:  Personally, I think this is the best VGA mode for the Propeller and this driver works very well.  Don't know why it isn't in the Object Exchange Library!

Viewport from myDancebot.com

Viewport is a program that let's you view and change variables in your Propeller application in real time. Viewport shows you the current state and graphs archived data for later analysis. A one line change to your Propeller program enables Viewport to access your variables and give you a user friendly interface to change variables as the program runs- all with no performance impact since it's running entirely in its own cog. The Viewport Conduit object is coded entirely in assembly to provide a record 2mbps transmit and receive connection- which you can use any way you want. If you're interested in observing quick events you can sample a byte variable 200,000 times per second- continuously. Or you can include every variable in your program for detailed analysis. Viewport also supports a turbo mode to sample the INA register at up to 80Mhz with an optional trigger. Viewport is modeled after a digital oscilloscope and lets you manipulate the data as you want. Graphed data can be copied as an image to the clipboard from where they can be shared in email or office applications. Data can also be saved in standard WAV files. Viewport was developed to build affordable balancing robots "mydancebot", available later this year. Viewport is free for hobbyist using it for personal projects, other licenses will follow shortly. Check out what others are doing with Viewport!

Download Here!

 

DScope by Paul Baker (Parallax)

This is a program which turns the Propeller into a Digital Storage Scope (Logic Analyser). It is capable of displaying the output to a VGA monitor or TV. Follow the instructions in dscope.spin to compile the TV version. There are two modes of aquisition: the fast version which has a sample rate of 150ns when the Propeller is running at 80MHz, and the slow version which has a sample rate of 225ns or greater.

FemtoBasic by Mike Green (see object exchange)

SD Card FAT16 interface by Tomas Rokicki (see Object exchange)

POD Debugger by Thomas, aka Kaio

PropTerminal by  Andy, aka Ariba

Ray:  This is an interesting program for debugging that shows the vga/video output on your PC screen and lets you use your computer's mouse and keyboard as input to the Propeller. 

PE Kit Lab Applications – EEPROM Datalogging and I2C  by Andy Lindsay (Parallax)

One interesting and particularly useful application of the Propeller Eeprom object’s VarBackup method is that values that were copied from the main RAM’s variable memory to EEPROM are automatically restored to variable memory on reboot.  (Thanks and kudos to Jeff Martin for suggesting this approach!)  The VarRestore method can also be used to programmatically restore variable memory to an earlier state that was copied to EEPROM by VarRestore.

Ray:  This ability to easily save program variables to EEPROM could be very useful!

Useless (?) note on WaitPXX assembly instructions and the flags

Jeff Martin (Parallax):  Here is how the Z flag is affected by WAITPEQ and WAITPNE (with a WZ effect) according to lots of testing I've done. We haven't confirmed this via the schematics yet, but we're pretty certain enough to tell you.

WAITPEQ: Z = 1 if State + Mask = 0. WAITPNE: Z = 1 if State + Mask + 1 = 0.

Now, I don't think we really intended for Z to be of any particular use with these two instructions, but rather let it be whatever it naturally ended up; just like with C.

That being said, I will be revising the docs to indicate that Z is undefined, just like C is, for those two commands.