 The only commercial 8-bit BASIC computers that were as fast as the BBC Micro was the Swedish ABC 80 and ABC 800.The improved BASIC 4 on the BBC Master executes the same benchmark in about seven seconds.One of the unique features of BBC BASIC was the inline assembler, allowing users to write assembly language programs for the 6502 and, later, the Zilog Z80, NS32016 and ARM.