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I'm not sure if this is the right place to ask, but I would like to request the folks at Parallax to post PDF versions of the schematics of the Activity Board.

Currently, as far as I can tell,...

Let's start a new thread about this: http://forums.parallax.com/showthread.php/148080

===Jac

(Starting a new thread about this instead of hijacking the other one)



A board.cfg editor would be a great feature. I don't really think much in terms of user interface but more in terms of...

I suspect that MPEG1 layer 1 or ADPCM would be within the realms of decoding realtime by the Prop1. They don't provide as much compression (think 4:1 instead of 10:1) but with 8 cogs at 80MHz... I'm...

I know I'm going off on a tangent here...

I don't know how difficult this would be, but I wonder if there should be a feature so that libraries CAN be board-related. For my own "Propeddle"...

I'm with Heater and SRLM on the issue of warnings: every warning is there for a reason. It's the compiler saying "There's that word again, I don't think it means what you think it means".

Perhaps...

You probably meant to type:
printf("n=%x\n",n);



This must also be a typo: I'm guessing it should be
printf("n=%d\r\n",n); but I don't know what tutorial you're working on.

The reason...

Jazzed, I'm not running the latest version of SimpleIDE so I don't know if this has been implemented now, but could you add a feature to monitor the files you have open? Whenever the program gets the...

Yes. And we should encourage them to use scaling and fractions instead of float/double, if you want my opinion. I've never encountered a situation where floating point (with all its pitfalls such as...

I don't know how well it was visible on the stream, but that rotating color square was very mesmerizing on the screen at OPC. Whoever made that, Kudos!

I was thinking a non-animated version of...

I'm thinking with the extra hub memory of the P2 it will be definitely be possible to do a version of my project (software defined 6502 computer) without external RAM, and with the extra speed it...

I'm reading this thread with great interest, and I agree with almost all viewpoints.

I'm seeing Martin Hodge (Propeller ASC) and Jeff Ledger (OldBitCollector -- Pocket Mini Computer) are following...

It's a little more subtle than that:

In C, a Boolean test such as
(a == b) will evaluate to 1 or 0. However, when you perform a Boolean test (e.g.
(a && b), the code only tests whether the...

This CORDIC stuff is the most exciting thing I've read in weeks! Asynchronous 64/32 bit multiplies and divides and square roots in Assembler... Simultaneous Sin/Cos... FFT's using a few quick...

I'm sorry I only had time to read 3 pages so far of this discussion, so as I understand it the general consensus is to have Ethernet and/or USB (with a wifi or bluetooth dongle on USB).

But I have...

I would say a union is a more structured way to solve problems like this. Yes, endianness is an issue but if you disregard that (i.e. if you can assume that the bytes are stored host-endian) it's...

The case where it matters is when assembling / compiling code for Cog mode, and it looks like my code is getting translated correctly all the way, including directives such as LONG.

My code...

Update/Bump:

As I understand, Eric made some improvements to the P2test branch to fix this. There now is a .pasm directive (to replace .cog_ram), and the @ operator was added. It appears that the...

SRLM, if all you want is a simple Download-and-Run solution to distribute Propeller image files so that people can simply upgrade the firmware to a Propeller based project without even knowing what a...

Not weird, but standard C. (Okay maybe a little weird :-) )

Arrays and pointers are interchangeable but not in all cases. When you do char str[ ], the characters are stored in memory, and str is...

Of course.

===Jac

I had a .cog_ram directive in my code that I used for demonstrating this problem, and it didn't fix the problem of not dividing address #foo by 4 in a mov bar, #foo. I'm pretty sure I was using the...

I know the 68000 will throw a bus exception when you access something that's not aligned on its own size, but unlike the TI DSP I mentioned, the 68000 bus is still byte-addressed. The TI DSP uses...

Would something like


hello byte "H","e","l","l","o"
' etc...
byte 0


also work?

Since instructions mostly work on cog addresses, I see the Propeller as 8 computers that each have 2KB of memory organized in longs, with a relatively slow access method to a larger byte-addressed...