Hi all,

I think 80C31 has only 128 bytes ram. But Philips 80C31 do have dual data pointers, so I try setting this option in compiler
single(standard 80C51)/dual data pointer (Philips MODP2), it still won't work in either option.
I'm not sure how to set limits to pass on printf, but in the memmory model
it was set to " large : variable in XDATA" ( we always use this option )

My bigest question is why one series of the chip work and the other doesn't.
Is it possible that we got a defected chips??? Has any one experience with
this before???

Best regard,