Apologies, the board I referred to was called the Hummingboard, not the Mockingboard. To confuse things, the name Hummingboard is used today by an ARM SBC manuf

Apologies, the board I referred to was called the Hummingboard, not the Mockingboard. To confuse things, the name Hummingboard is used today by an ARM SBC manufacturer. There were multiple Trump Cards too; one was apparently an Amiga peripheral board.