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7f52a770d9
So far the joy_masks array allowed several joystick drivers for a single target to each have different joy_read return values. However this meant that every call to joy_read implied an additional joy_masks lookup to post-process the return value. Given that almost all targets only come with a single joystick driver this seems an inappropriate overhead. Therefore now the target header files contain constants matching the return value of the joy_read of the joystick driver(s) on that target. If there indeed are several joystick drivers for a single target they must agree on a common return value for joy_read. In some cases this was alredy the case as there's a "natural" return value for joy_read. However a few joystick drivers need to be adjusted. This may cause some overhead inside the driver. But that is for sure smaller than the overhead introduced by the joy_masks lookup before. !!! ToDo !!! The following three joystick drivers become broken with this commit and need to be adjusted: - atrmj8.s - c64-numpad.s - vic20-stdjoy.s
115 lines
4.8 KiB
C
115 lines
4.8 KiB
C
/*****************************************************************************/
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/* */
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/* atari5200.h */
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/* */
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/* Atari 5200 system specific definitions */
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/* */
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/* */
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/* */
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/* (C) 2014 Christian Groessler <chris@groessler.org> */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#ifndef _ATARI5200_H
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#define _ATARI5200_H
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/* Check for errors */
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#if !defined(__ATARI5200__)
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# error This module may only be used when compiling for the Atari 5200!
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#endif
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/* no support for dynamically loadable drivers */
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#define DYN_DRV 0
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/* the addresses of the static drivers */
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extern void atr5200std_joy[]; /* referred to by joy_static_stddrv[] */
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/* make GTIA color value */
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#define _gtia_mkcolor(hue,lum) (((hue) << 4) | ((lum) << 1))
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/* luminance values go from 0 (black) to 7 (white) */
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/* hue values */
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#define HUE_GREY 0
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#define HUE_GOLD 1
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#define HUE_GOLDORANGE 2
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#define HUE_REDORANGE 3
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#define HUE_ORANGE 4
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#define HUE_MAGENTA 5
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#define HUE_PURPLE 6
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#define HUE_BLUE 7
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#define HUE_BLUE2 8
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#define HUE_CYAN 9
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#define HUE_BLUEGREEN 10
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#define HUE_BLUEGREEN2 11
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#define HUE_GREEN 12
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#define HUE_YELLOWGREEN 13
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#define HUE_YELLOW 14
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#define HUE_YELLOWRED 15
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/* Color defines, similar to c64 colors (untested) */
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#define COLOR_BLACK _gtia_mkcolor(HUE_GREY,0)
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#define COLOR_WHITE _gtia_mkcolor(HUE_GREY,7)
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#define COLOR_RED _gtia_mkcolor(HUE_REDORANGE,1)
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#define COLOR_CYAN _gtia_mkcolor(HUE_CYAN,3)
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#define COLOR_VIOLET _gtia_mkcolor(HUE_PURPLE,4)
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#define COLOR_GREEN _gtia_mkcolor(HUE_GREEN,2)
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#define COLOR_BLUE _gtia_mkcolor(HUE_BLUE,2)
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#define COLOR_YELLOW _gtia_mkcolor(HUE_YELLOW,7)
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#define COLOR_ORANGE _gtia_mkcolor(HUE_ORANGE,5)
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#define COLOR_BROWN _gtia_mkcolor(HUE_YELLOW,2)
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#define COLOR_LIGHTRED _gtia_mkcolor(HUE_REDORANGE,6)
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#define COLOR_GRAY1 _gtia_mkcolor(HUE_GREY,2)
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#define COLOR_GRAY2 _gtia_mkcolor(HUE_GREY,3)
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#define COLOR_LIGHTGREEN _gtia_mkcolor(HUE_GREEN,6)
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#define COLOR_LIGHTBLUE _gtia_mkcolor(HUE_BLUE,6)
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#define COLOR_GRAY3 _gtia_mkcolor(HUE_GREY,5)
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/* Masks for joy_read */
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#define JOY_UP_MASK 0x01
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#define JOY_DOWN_MASK 0x02
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#define JOY_LEFT_MASK 0x04
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#define JOY_RIGHT_MASK 0x08
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#define JOY_BTN_1_MASK 0x10
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/* get_tv return values */
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#define AT_NTSC 0
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#define AT_PAL 1
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/* Define hardware */
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#include <_gtia.h>
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#define GTIA_READ (*(struct __gtia_read*)0xC000)
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#define GTIA_WRITE (*(struct __gtia_write*)0xC000)
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#include <_pokey.h>
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#define POKEY_READ (*(struct __pokey_read*)0xE800)
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#define POKEY_WRITE (*(struct __pokey_write*)0xE800)
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#include <_antic.h>
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#define ANTIC (*(struct __antic*)0xD400)
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/* End of atari5200.h */
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#endif
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