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[/] [neorv32/] [trunk/] [rtl/] [core/] [neorv32_xirq.vhd] - Diff between revs 64 and 65
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| Rev 64 |
Rev 65 |
| Line 210... |
Line 210... |
-- IRQ Arbiter --------------------------------------------------------------
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-- IRQ Arbiter --------------------------------------------------------------
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-- -----------------------------------------------------------------------------
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-- -----------------------------------------------------------------------------
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irq_arbiter: process(clk_i)
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irq_arbiter: process(clk_i)
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begin
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begin
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if rising_edge(clk_i) then
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if rising_edge(clk_i) then
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cpu_irq_o <= '0';
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if (irq_run = '0') then -- no active IRQ
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if (irq_run = '0') then -- no active IRQ
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if (irq_fire = '1') then
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if (irq_fire = '1') then
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cpu_irq_o <= '1';
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irq_run <= '1';
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irq_run <= '1';
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irq_src <= irq_src_nxt;
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irq_src <= irq_src_nxt;
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end if;
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end if;
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else -- active IRQ, wait for CPU to acknowledge
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else -- active IRQ, wait for CPU to acknowledge
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if (host_ack = '1') then
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if (host_ack = '1') then
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Line 223... |
end if;
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end if;
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end if;
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end if;
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end if;
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end if;
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end process irq_arbiter;
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end process irq_arbiter;
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-- interrupt request --
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cpu_irq_o <= irq_run;
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end neorv32_xirq_rtl;
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end neorv32_xirq_rtl;
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