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Multi Button Mapping

Newsdee edited this page Oct 29, 2019 · 3 revisions

When overriding gamepad settings inside a core it is possible to define button combinations (e.g. A+B) if you have enough physical buttons.

To allow for this, MiSTer will ask if you want to setup "alternate mappings" after defining a gamepad.

Alternate mappings are active in parallel and allow two kinds of abilities: map two physical button to the same core button (e.g. alternate button for Start), or map one physical button to two-button combo in the core (e.g. map physical X to thr core's A+B).

Bind core button to two physical buttons

The simplest is to map an extra physical button. Only this additional button needs to be defined in the alternate map, as follows:

map d-pad A B
main define Btn 1 Btn 2
alt skip skip Btn 3

The result of using this setup ia that you will have physical buttons 2 and 3 mapped to the core button B.

This also works with gamepad directions. For example, for games that use Up as a jump button, it is possible to map a physical third button to jump.

Bind physical button to core button combo

A more advanced setup is to use both mappings in parallel to make one physical button push two core buttons at the same time.

See the table below:

map d-pad A B
main define Btn 1 Btn 3
alt skip Btn 3 Btn 2

The result of this is that Button 1 will be A, Button 2 will be B, and Button 3 will be A+B.

This is particularly useful for the Neogeo core where some fighting games use A+B and C+D as "strong hit".

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