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84 lines
4.2 KiB
C
84 lines
4.2 KiB
C
/*****************************************************************************/
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/* */
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/* tgi-kernel.h */
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/* */
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/* TGI kernel interface */
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/* */
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/* */
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/* */
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/* (C) 2002-2009, 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 _TGI_KERNEL_H
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#define _TGI_KERNEL_H
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* TGI kernel variables */
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extern void* tgi_drv; /* Pointer to driver */
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extern unsigned char tgi_error; /* Last error code */
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extern unsigned char tgi_gmode; /* Flag: Graphics mode active */
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extern int tgi_curx; /* Current drawing cursor X */
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extern int tgi_cury; /* Current drawing cursor Y */
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extern unsigned char tgi_color; /* Current drawing color */
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extern unsigned tgi_xres; /* X resolution of the current mode */
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extern unsigned tgi_yres; /* Y resolution of the current mode */
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extern unsigned char tgi_colorcount; /* Number of available colors */
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extern unsigned char tgi_pagecount; /* Number of available screens */
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extern unsigned tgi_aspectratio;/* Aspect ratio as fixed point 8.8 */
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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const char* __fastcall__ tgi_map_mode (unsigned char mode);
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/* Map a tgi mode to a driver name. Returns NULL if no driver available. */
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int __fastcall__ tgi_imulround (int rhs, int lhs);
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/* Helper function for functions using sine/cosine: Multiply two values, one
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* being an 8.8 fixed point one, and return the rounded and scaled result.
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*/
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/* End of tgi-kernel.h */
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#endif
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