1 /*****************************************************************************/
5 /* Loader module for TGI drivers */
9 /* (C) 2002-2003 Ullrich von Bassewitz */
10 /* Römerstrasse 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 #include <tgi/tgi-kernel.h>
45 void __fastcall__ tgi_load (unsigned char mode)
46 /* Install the matching driver for the given mode. Will just load the driver
47 * and check if loading was successul. Will not switch to gaphics mode.
50 const char* name = tgi_map_mode (mode);
52 /* No driver for this mode */
53 tgi_error = TGI_ERR_NO_DRIVER;
56 tgi_load_driver (name);
62 void __fastcall__ tgi_load_driver (const char* name)
63 /* Install the given driver. This function is identical to tgi_load with the
64 * only difference that the name of the driver is specified explicitly. You
65 * should NOT use this function in most cases, use tgi_load() instead.
68 static struct mod_ctrl ctrl = {
69 read /* Read from disk */
73 /* Check if we do already have a driver loaded. If so, remove it. */
78 /* Now open the file */
79 ctrl.callerdata = open (name, O_RDONLY);
80 if (ctrl.callerdata >= 0) {
83 Res = mod_load (&ctrl);
85 /* Close the input file */
86 close (ctrl.callerdata);
88 /* Check the return code */
89 if (Res == MLOAD_OK) {
91 /* Check the driver signature, install the driver */
92 tgi_install (ctrl.module);
98 /* Error loading the driver */
99 tgi_error = TGI_ERR_CANNOT_LOAD;