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@ -190,13 +190,13 @@ will corrupt any Vera operations that were going on in the main program. The rou
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Commander X16 specific IRQ handling
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===================================
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Instead of using the routines in `sys` as mentioned above (that are more or less portable
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Instead of using the routines in ``sys`` as mentioned above (that are more or less portable
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across the C64,C128 and cx16), you can also use the special routines made for the Commander X16,
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in `cx16`. The idea is to let Prog8 do the irq dispatching and housekeeping for you, and that
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in ``cx16``. The idea is to let Prog8 do the irq dispatching and housekeeping for you, and that
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your program only has to register the specific handlers for the specific IRQ sources that you want to handle.
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Look at the examples/cx16/multi-irq-new.p8 example to see how these routines can be used.
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Here they are, all available in `cx16`:
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Here they are, all available in ``cx16``:
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``disable_irqs ()``
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Disables all Vera IRQ sources. Note that the CPU irq disable flag is not changed by this routine.
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@ -205,6 +205,8 @@ Here they are, all available in `cx16`:
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``enable_irq_handlers (bool disable_all_irq_sources)``
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Install the "master IRQ handler" that will dispatch IRQs to the registered handler for each type.
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Only Vera IRQs supported for now.
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Pass true to initially disable all Vera interrupt sources (they will be enabled individually again
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by setting the various handlers), or pass false to not touch this.
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The handlers don't need to clear its ISR bit, but have to return 0 or 1 in A,
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where 1 means: continue with the system IRQ handler, 0 means: don't call that.
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