Hello, Frank !
The 68881/68882 are always optional (they are separate FPUs).
Ok.
68881/68881 can only be used together with the 68020/68030.
Ok.
The 68000 can't use the 68881 like the 68020/68030 (must be adresses like a separate I/O device).
Sorry, but I probably miss something... I'm a newbie with FPU. I was thinking that FPU calls were always F-instructions...Are the FPU instructions different between 68000+68881, 68030+68881 and 68RC040 ?
What do you mean by special addressing for the 68000 ? -- Vincent Rivière