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Searching for RAM2 I found another thread where you mentioned "Any calls to malloc or new will go to RAM2...". I initialized some of my large arrays using new and I now have large amounts of dynamic memory available. Thanks so much for your help and quick answer. Cheers!

Hi, I have a project for my Teensy 4 that I initially wrote using Arduino 1.8.10 and Teensyduino 1.48. When I compile it I still have plenty of dynamic memory available: Sketch uses 125744 bytes (6%) of program storage space. Maximum is 2031616 bytes. Global variables use 497200 bytes (47%) of...

I knew your name was familiar! :rolleyes: Did you try reversing the cable around so the side with the bend is attached to the breakout board instead of the teensy4. Wish I could be more help. And thanks so much for SdFat! =)

Are you using the SD socket on the breakout board or the audio shield? I could be wrong but my understanding is the ribbon cable connects to the SD socket on the breakout board. This SD socket is not wired correctly for SPI (maybe why 4 pins appear disconnected) and since SDIO is not working...

Ok. Don't include iostream. I had it included in all my files but I commended out all function calls to it. That's not good enough. So far things are ok when I don't include iostream. My guess is the teensy has no concept of stdin and stdout. Sorry for the mistake.

Hi. I've just started experimenting with my new teensy 3.6. While trying to use some of my existing c++ code I found I could not compile anything using c++ libraries. Even the most simple program that includes a c++ library will fail to link. My current system: Mac OS 10.14 Arduino 1.8.7...