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nes: Expose and document all joypad keys

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This commit is contained in:
Lauri Kasanen 2015-10-05 17:19:36 +03:00
parent 04be8020b6
commit 7f409c3edb
2 changed files with 17 additions and 0 deletions
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8
doc/nes.sgml
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@ -123,6 +123,14 @@ No extended memory drivers are currently available for the NES.
</descrip><p>
The generic interface doesn't export the start and select buttons. To
test for those, use the defines in nes.h instead of the generic masks.
Example:
<tscreen><verb>
if (joy_read(0) & KEY_A)
</verb></tscreen>
<sect1>Mouse drivers<p>

9
include/nes.h
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@ -90,6 +90,15 @@
/* No support for dynamically loadable drivers */
#define DYN_DRV 0
/* The joystick keys - all keys are supported */
#define KEY_UP 0x10
#define KEY_DOWN 0x20
#define KEY_LEFT 0x40
#define KEY_RIGHT 0x80
#define KEY_A 0x1
#define KEY_B 0x2
#define KEY_SELECT 0x4
#define KEY_START 0x8
/* The addresses of the static drivers */