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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
113 lines
4.5 KiB
C
113 lines
4.5 KiB
C
/*****************************************************************************/
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/* */
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/* pet.h */
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/* */
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/* PET system specific definitions */
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/* */
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/* */
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/* */
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/* (C) 1998-2005 Ullrich von Bassewitz */
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/* Roemerstrasse 52 */
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/* D-70794 Filderstadt */
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/* EMail: uz@cc65.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 _PET_H
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#define _PET_H
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/* Check for errors */
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#if !defined(__PET__)
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# error This module may only be used when compiling for the CBM PET!
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#endif
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* Color defines */
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#define COLOR_BLACK 0x00
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#define COLOR_WHITE 0x01
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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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/* Define hardware */
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#include <_pia.h>
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#define PIA1 (*(struct __pia*)0xE810)
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#define PIA2 (*(struct __pia*)0xE820)
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#include <_6522.h>
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#define VIA (*(struct __6522*)0xE840)
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/* All models from 40xx and above */
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#include <_6545.h>
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#define CRTC (*(struct __6545)0xE880)
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/* SuperPET only */
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#include <_6551.h>
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#define ACIA (*(struct __6551*)0xEFF0)
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/*****************************************************************************/
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/* Variables */
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/*****************************************************************************/
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/* The addresses of the static drivers */
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extern void pet_ptvjoy_joy[];
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extern void pet_stdjoy_joy[]; /* Referred to by joy_static_stddrv[] */
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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/* The following #defines will cause the matching functions calls in conio.h
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** to be overlaid by macros with the same names, saving the function call
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** overhead.
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*/
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#define _textcolor(color) COLOR_WHITE
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#define _bgcolor(color) COLOR_BLACK
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#define _bordercolor(color) COLOR_BLACK
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/* End of pet.h */
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#endif
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