CBE/examples/asm-demo.cpu/program.cpp

// C++ demo for TinyCPU
// Prints numbers 0-9 to GPU
extern "C" void write_gpu(char c);

int main() {
    for (int i = 0; i < 10; i++) {
        write_gpu('0' + i);
        write_gpu('\n');
    }
    return 0;
}