I am working towards porting linux on sandpoint with mpc750 I face the problem of continious spurious interrupts on booting as per the base code SIOint is cascaded to EPIC in level triggered mode , problem vanishes when i change it to edge triggered mode also recall written in some intel document that external interrupts from 8259 or equivalent pic's should be cascaded to APIC in edge triggered mode only why this requirement for cascading the interrupts from 8259 or other pic's to APIC/EPIC any comment on this will help me much
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