THE C CODE VALUES

Hello,
Your tutorial really helped me understand stepper motor better. But I'm confused as to how you took the values 0x0c etc for stepper variable in the C code. how to derive these values?
Since I'm trying to use another microcontroller understanding and making a c code would help me a long way.
Please let me know.
Thanks!

The code you refer to is to drive the circuit
shown in the accompanying diagram.

http://www.8051projects.net/wiki/Stepper_Motor_Tutorial
"Bipolar Stepper Motor connection"

Applying this bit pattern,to the L293D will turn the motor.

c 1100 ;shifting pattern
6 0110
3 0011
9 1001

The code will work on any micro,
just change it to drive 4 pins in the same order.