[Milkymist-devel] PS/2
Takeshi MATSUYA
macchan at sfc.wide.ad.jp
Tue Nov 10 06:21:25 PST 2009
On 2009/11/10, at 23:04, Sébastien Bourdeauducq wrote:
> Now that I checked, it seems that LM32 is designed to use edge-
> triggered
> interrupts (despite its documentation stating the opposite) while
> all cores in
> Milkymist use level-triggered interrupts (in compliance with the
> LM32 doc).
>
> This configuration works (and UART interrupts are correctly acked in
> the demo
> firmware) but it makes interrupt handling uselessly complex and
> wastes a few
> FPGA LUTs.
>
> I will convert all cores to edge-triggered interrupts and then we
> will start
> debugging this interrupt issue on a more sane basis. And with edge-
> triggered
> interrupts, there will be no need for core-level interrupt acking.
>
> Sébastien
Thanks,
I will try it.
Takeshi
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