Re: [cc65] Raster interrupts on Plus/4

From: Oliver Schmidt <ol.sc1web.de>
Date: 2015-03-13 14:50:17
Hi,

Wouldn't it be interesting to learn if set_irq() is used?

- If 'no' then the C-written IRQ handler likely trashes zero page stuff of
the main program.

- If 'yes' then the C-written IRQ handler is supposed to return to the
C-library stub and not jump to "somewhere" as then the zero page stuff of
the main program isn't restored by the C-library stub.

Or do I miss a point here?

Regards,
Oliver

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Received on Fri Mar 13 14:50:22 2015

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