On Fri, 9 Feb 2001, Kevin D. Kissell wrote: > The best method I know for post-R3000 CPUs is to > write and read back the CU1 bit of the Status register. > CPUs without an integrated FPU will not have a flip-flop > for the bit, and will read back a 0 even after writing a 1. > There was never any architectural requirement that > this be so, however, and this cannot be absolutely > guaranteed to work. If anyone has a counter-example, > however, I'd be interested in hearing about it. OK, then we may try to toggle CU1 and only if that succeeds check the FPU implementation id. Thanks for the point. -- + Maciej W. Rozycki, Technical University of Gdansk, Poland + +--------------------------------------------------------------+ + e-mail: macro@ds2.pg.gda.pl, PGP key available +
