Is the length reported correct? It should be the exact (rounded) duration in seconds

PWM only uses 60 cpu cycles every pwm cycle (128 kHz) so you can still use 124 MHz.

And very glad to see that somebody has allready updated Hackspire:

That somebody was me, some days ago

Let's go on: we still have a little more than 20 pins to identify!

The long pins are GND, now we only have 19 more (3 of them SPI, 8(?, don't remember exactly) GPIOs)
They shouldn't be a problem with diags and SLED tests

WARNING: Two people destroyed their touchpads by accidentially shorting some pins, so be VERY careful!
Read the thread here

Some days ago I found out (with diags) there are some GPIOs connected to the dock connector.
We also have one relatively fast timer we could use for pwm and one for loading new data from the buffer, so here ya go:



Dock connector (connected to pins 5 + 6):



There are still a few bugs/improvements that need to be done:
-Only 10 kHz sampling rate, more is possible
-Crashes on exit
-Loads file twice
-Max file size 2000000 Bytes (2MB)
-Only works on CX
-Only loads "/documents/ndless/monsta.raw.tns" for now
-Haven't got a name, any suggestions?

I'll publish the source code after it works completely.

Possible features:
-WAV loading
-Volume control
-Stereo :-)

BTW: Don't plug your speaker in before "Playing!" or you'll short 3,6 V (While playing, you only short ~1,8V)! Unplug them before exiting, the GPIO becomes high on reset! Don't use your amplifier, you may blow it!

Edit: Updated video

Newest version: here

Maybe you can get a Y-cable (used for external HDDs which need more than 0.5 A current) and use it with your calc and pc,
but I think I'll be easier to just use such a powered hub with power supply.

/dev/sdh contains a file system with errors, check forced.

It should be r/w mountable by now.

You can try to
mount --bind /dev /mnt/dev
mount --bind /sys /mnt/sys
mount --bind /proc /mnt/proc
mount -t devpts none /mnt/dev/pts
chroot /mnt
startx