2019-03-15 13:06:56 +01:00
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# Internals: Interface Layers
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Nga provides a virtual processor and an extensible way of adding
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I/O devices, but does not provide any I/O itself. Adding I/O is
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the responsability of the *interface layer*.
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An interface layer will wrap Nga, providing at least one I/O
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device (a generic output target), and a means of interacting
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with the *retro image*.
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It's expected that this layer will be host specific, adding any
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system interactions that are needed via the I/O instructions.
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The image will typically be extended with words to use these.
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