KO4BB's Microprocessor Pages
68HC05 Source Code samples and software
A keyer for the single lever paddle
The keyer uses the MC68HC705K1 but the code can be easily tailored to other 68HC05 devices or other Motorola microcontrollers.
Check the Source Code. Review and tailor to your application.
They have my call sign embedded, activated by a switch. Make sure you change that part before burning
your part.
A Programmer for the MC68HC805B6
This tool will load a Motorola S19 file into the program EEPROM of a MC68HC805B6 microcontroller.