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The fid instruction (Floating-Point Identify) puts the FPU model and revision into the Status Register. Since those values shouldn't be 0, store values there which a PCX-L2 (for 32-bit) or a PCX-W2 (for 64-bit) would return. Noticed while trying to install MPE/iX. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>