On-chip debugger program is for 8-bit MCUs what has a OCD1 and OCD2 block inside. This is a debugging software and support ABOV's M8051 series MCUs.
In order to use this software, OCD1/2 interface H/W is required. OCD2 uses two channel to download user's code, reads and modifies the internal memory and SFR(Special Function Register). So it can work even the MCU is attached on the target system. Besides, it can be run at MCU's maximum speed in OCD mode.
