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upd7810: treat NMI like other interrupts

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This commit is contained in:
Ramiro Polla 2014-11-02 23:14:49 +01:00
parent 2ce38beb19
commit 10e4408757
1 changed files with 9 additions and 12 deletions
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21
src/emu/cpu/upd7810/upd7810.c
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@ -709,6 +709,14 @@ void upd7810_device::upd7810_take_irq()
return;
/* check the interrupts in priority sequence */
if (IRR & INTNMI)
{
/* Nonmaskable interrupt */
irqline = INPUT_LINE_NMI;
vector = 0x0004;
IRR &= ~INTNMI;
}
else
if ((IRR & INTFT0) && 0 == (MKL & 0x02))
{
vector = 0x0008;
@ -1968,18 +1976,7 @@ void upd7810_device::execute_set_input(int irqline, int state)
{
/* no nested NMIs ? */
// if (0 == (IRR & INTNMI))
{
IRR |= INTNMI;
SP--;
WM( SP, PSW );
SP--;
WM( SP, PCH );
SP--;
WM( SP, PCL );
IFF = 0;
PSW &= ~(SK|L0|L1);
PC = 0x0004;
}
IRR |= INTNMI;
}
else
if (irqline == UPD7810_INTF1)