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RiscLua download page
RiscLua version history
Notes on the sources
Lua evolved from a data-entry language devised for PETROBRAS, the Brazilian oil company in the early 1990s. Its keynote has been simplicity. The term Lua refers to a C library and to a programming language which the library implements. Both aspects have been designed for portability, extendibility and embeddability

RiscLua is a dialect of Lua for RISC OS, which can be downloaded from this site. The sources can also be downloaded.

It differs from standard Lua in its treatment of arithmetic, and has built-in libraries giving access to software interrupts. In consequence it can be used for writing wimp programs.