> On Sun, 2004-02-22 at 13:52, Kevin D. Kissell wrote: > > > Other than the responses you've already gotten, likely you'll need to > > > compile with -march=r3900(or -mcpu=r3900 if it's an old toolchain) since > > > the 3900 is missing a couple of r3000 instructions iirc. > > > > The 3900 family should run MIPS I code compiled for the R3000. > > IIRC there were some standard MIPS I instructions that were not on the > tx39. I think you may be confusing MIPS I and MIPS II. I'm pretty darn certain that the TX39 inplemented all of MIPS I, most of MIPS II, plus a MADD extension. I'm not going to go instruction counting this morning, but the TX39 spec declares up-front that it's a superset of the R3000A.
