Hi Maciej, > The C790 is a follow-up to the R5900. The R5900 has an FPU that is not > compliant to the IEEE 754 standard for floating-point arithmetic. It > doesn't implement exceptions, infinities, NaNs or denormals. It doesn't > implement the the double format either, but that is really tangential, > because the same was the case with the IDT R4650, which had a standard > IEEE 754 FPU, but no double format either. Finally it has some anomalies > in the FP instruction set; not all opcode encodings are standard.
Do you know where one might find a list of the nonstandard FP instructions? The command % grep 'FP_.*EE' binutils/opcodes/mips-opc.c gives a list of candidates, I suppose? Fredrik
