Acorn BBC Master 128

The BBC Micro finished properly. 128K, the 65SC12 processor, a numeric keypad, the 1770 controller, and the ROM software — View, Viewsheet, ADFS, Terminal — built in rather than bought as chips. It is the machine the Model B should have been by 1986, and the one that stayed in British schools until the Archimedes replaced it. Watch the battery: leaking CMOS cells have destroyed a great many Master boards.