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a question about 2181 ICNTL register

Started by Baoliang Wang May 24, 2002
hi,
I am developadsp 2181 based motion control system. I use Visualdsp++2.0 and
218X EZ-ICE. I want set the dsp in nested interrupt mode. In my program I write 2 insteuction:
icntl=0x0017
nop
But in the register window, the data in icntl is 07.I try to change icntl directly, but the higher four bit
is still 0.
when the Visual dsp is in simulation mode, the icntl can change to 0x17.
why ?
 
best regards
 
Wang Baoliang