The downloading process including the following steps, each of which is displayed in the status bar:
First, a 256 byte bootstrap loader is loaded into the HC11's RAM at 1200 bps. On the HC11, control is now transferred to the loader.
Gdl and the HC11 both switch to 9600 bps, and gdl attempts to synchronize with the HC11.
If the bulk-erase option is set, Gdl has the HC11 erase its entire EEPROM.
The user's machine code program is entered into the HC11's EEPROM area.