Some of the contemporary Propeller software already requires a 64 kbytes EEPROM. Having the Propeller on a socket to be available for breadboarding is a nice idea. Doing the same with the EEPROM would make sense and the EEPROM being the only part of the board that can wear out, having it socketed would make double sense. For the quartz, the capacitors and the I2C pullups, just include a set of them in a bag with your kit.

Having the quartz on the devboard removable would be nice too for swapping in other "speeds". Disabling the onboard quartz by jumpers and adding the other quartz on the breadboard would be equivalent.

Fixed onboard peripherals may come in your way. I prefer not to have switches and LEDs onboard. Adding LEDs and switches for playing with them on the breadboard probably is not too complicated for beginners.

And in contrast to the comments in the Parallax forum, I don't like micro USB. They are too fragile. Mini is better, fullsize may be overkill today. But the USB2 world seems to converge on micro USB and I will not be able to stop that.. :-(

Why not waste the space of 2 more pins to have exactly the Propeller footprint on the breadboard? That would make transition from this devboard to a "naked" P8X32A-D40 on a breadboard easier.

And why a 32k EEPROM? That's sooooo last millenium! ;-)

Hi Yeti

I did not put the 2 pins because they are the VCC and GND pins, you don't need those pins in the footprint on the breadboard.
About the epromm memory, the microcontroller need the epromm memory, this epromm is a 32k x 8, but I can use the AT24C512.

Your opinion is very important for me, I will consider all your opinions in a future review, so thank so much for your tips. :)
If you want more information, please contact me.