Ohio Scientific Challenger 1P

Ohio Scientific, based in Ohio, USA, were the makers of the Superboard II. The Challenger 1P and Challenger IIP-MF were essentially cased versions of this single board system with integrated keyboard, a single 5Volt power supply and the first 6502 version of Microsoft BASIC interpreter. An optional floppy disk controller and a extra 24K of ram for this unit was available using a 610 expansion board. The C1P-MF was an upgraded version of the C1P having 20 KB of RAM and one 90 KB floppy disc drive. Memory could be upgraded up to 32 KB. The Superboard and its derivatives had good user support and many programs were available.