SPARC condition-code question

[Mouse <mouse%Rodents-Montreal.ORG@localhost>]

I'm working on a SPARC emulator, and have run into a question:

Is it true the only way to have condition code bits N and Z set
simultaneously involves help from privileged code (specifically,
wrpsr)?  I have found short (<= 3 instruction) simple sequences to
generate all 12 of the other combinations, but it looks to me as though
getting N and Z set together requires wrpsr.

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