According to the Fabacom page, Fabacom supports Floating point numbers, Laser BASIC and TURBO BASIC don't. Also according to that page the only thing which won't work on a 464 is FILL and MASK commands.
According to the Fabacom page, Fabacom supports Floating point numbers, Laser BASIC and TURBO BASIC don't. Also according to that page the only thing which won't work on a 464 is FILL and MASK commands.