A tool for uploading programs to embedded devices
Upad is a programmer (aka "chipflasher") and low level debugger for micro-controllers which feature a background debug mode (BDM) interface. BDM is an electronic interface enabling debugging of embedded systems. Specifically, it provides in-circuit debugging in a non-intrusive manner. The interface appears in many Freescale and NXP products, such as the S12Z, HCS08, and 68HC12.
Upad may be used to upload programs to such products and to debug those programs. Its software is exclusively free software. It requires a dedicated hardware device, but this is inexpensive and can be easily constructed by a moderately skilled technician.
released on 29 June 2018