BBC BASIC for Windows

BBC BASIC for Windows is an implementation of BBC BASIC for 32-bit Windows, created by Richard T. Russell. It has a number of enhancements compared with earlier implementations of BBC BASIC, including:

data structures
PRIVATE variables
long (65535 character) strings
NUL-terminated strings
event interrupts
an 'address of' operator
byte (unsigned 8-bit) variables
a line-continuation character
indirect procedure and function calls
improved numeric accuracy (64-bit floats)

Details can be found at the official web site.