I had the Acorn BCPL cassette as well for my beeb circa 1984. To be honest I never really did much with it preferring instead to learn 6502 assembler (I wrote a

I had the Acorn BCPL cassette as well for my beeb circa 1984. To be honest I never really did much with it preferring instead to learn 6502 assembler (I wrote a modem controller sideways ROM for use with my home made BBS app).