I got a main board out of a mini grand - dead as a post - and it’s got a CPU chip on it labelled RWA828 (see picture). The chip has got clock running but nothing else - no address or data traffic between it and any RAM and ROM.
Can’t find anything about it - would like to get my hands on a data sheet
Anyone on his forum know what it is of has details about it? I would like to have a closer look why it is not running and what needs to be done for a reset - but I need data sheet for that