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Special Mask Mode for i8259 PIC (Sebastian Reichelt). 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4894 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
balrog 2008-07-19 09:18:48 +00:00
parent 315bc7aa0e
commit 846787113a
1 changed files with 2 additions and 0 deletions
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2
hw/i8259.c
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@ -123,6 +123,8 @@ static int pic_get_irq(PicState *s)
master, the IRQ coming from the slave is not taken into account
for the priority computation. */
mask = s->isr;
if (s->special_mask)
mask &= ~s->imr;
if (s->special_fully_nested_mode && s == &s->pics_state->pics[0])
mask &= ~(1 << 2);
cur_priority = get_priority(s, mask);