FPUVERSION4(8) System Manager's Manual FPUVERSION4(8)
fpuversion4 - print the Sun-4 FPU version
Sun-4 systems only.
fpuversion4 reads the %fsr register to determine the FPU version
installed on a Sun-4. The printed version field contains a value in
the range 0-7; by SPARC convention 7 indicates that no FPU is
installed, so floating-point instructions are always emulated in the
6 October 1988 FPUVERSION4(8)