1 /*****************************************************************************/
5 /* TGI kernel interface */
9 /* (C) 2002-2009, Ullrich von Bassewitz */
10 /* Roemerstrasse 52 */
11 /* D-70794 Filderstadt */
12 /* EMail: uz@cc65.org */
15 /* This software is provided 'as-is', without any expressed or implied */
16 /* warranty. In no event will the authors be held liable for any damages */
17 /* arising from the use of this software. */
19 /* Permission is granted to anyone to use this software for any purpose, */
20 /* including commercial applications, and to alter it and redistribute it */
21 /* freely, subject to the following restrictions: */
23 /* 1. The origin of this software must not be misrepresented; you must not */
24 /* claim that you wrote the original software. If you use this software */
25 /* in a product, an acknowledgment in the product documentation would be */
26 /* appreciated but is not required. */
27 /* 2. Altered source versions must be plainly marked as such, and must not */
28 /* be misrepresented as being the original software. */
29 /* 3. This notice may not be removed or altered from any source */
32 /*****************************************************************************/
41 /*****************************************************************************/
43 /*****************************************************************************/
47 /* TGI kernel variables */
48 extern void* tgi_drv; /* Pointer to driver */
49 extern unsigned char tgi_error; /* Last error code */
50 extern unsigned char tgi_gmode; /* Flag: Graphics mode active */
51 extern int tgi_curx; /* Current drawing cursor X */
52 extern int tgi_cury; /* Current drawing cursor Y */
53 extern unsigned char tgi_color; /* Current drawing color */
54 extern unsigned tgi_xres; /* X resolution of the current mode */
55 extern unsigned tgi_yres; /* Y resolution of the current mode */
56 extern unsigned char tgi_colorcount; /* Number of available colors */
57 extern unsigned char tgi_pagecount; /* Number of available screens */
58 extern unsigned tgi_aspectratio;/* Aspect ratio as fixed point 8.8 */
62 /*****************************************************************************/
64 /*****************************************************************************/
68 int __fastcall__ tgi_imulround (int rhs, int lhs);
69 /* Helper function for functions using sine/cosine: Multiply two values, one
70 * being an 8.8 fixed point one, and return the rounded and scaled result.
75 /* End of tgi-kernel.h */