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Old 10 August 2014, 23:11   #32

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Join Date: Nov 2009
Location: Herford / Germany
Posts: 1,067
Concerning P5_M68K_IPL:
These three bits are read-only and reflect the current IPL state on the mainboard. When an interrupt occurs, the PPC can read these bits to know which interrupt level it was.
P5_PPC_IPL is for masking interrupt levels on the PPC.
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