DS80C320 chip has no on-board programmable code memory so no programmer device is applicable directly for this part.

Since the DS80C320 is largely similar to other 8031/8032 type parts you should be able to take any of the plethora of 8031/32 type schematics that are around and adapt it to the Dallas part. Just read the data sheet for the part and you can learn how to adapt the pins that have additional functionality such as the 2nd UART. Of course you are going to have to provide external code memory and optionally external data memory if the onboard 256 byte is not enough for your usage.

Another thing: Have you combed through the Dallas web site extensively? There are various App Notes that can give you some ideas too.

Michael Karas