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Hi everyone, can anyone tell me to which extent are there incompatibilities of code compiled for 68020+68881 to be run on a 68040? I heard there were 7 instructions for the 68020+68881 that are not compatible on the 68040, and 5 of them were related to FPU operations. Is it really like this? The question is, how can I assure that code compiled for a 68020+68881 platform will run without any problems on a 68040 platform? Must I avoid the use of trigonometric functions only, or is it more than that? Thanks in advance! Best regards. --Vitor Santos ---------------------------------------------------------- Vitor M. F. Santos | Universidade de Aveiro | Tel: +351 34 370828 Dep. de Engenharia Mecanica | Fax: +351 34 370953 Campus Universitario | E-mail: vitor@ua.pt 3810 Aveiro * PORTUGAL | -----------------------------------------------------------