1 /*****************************************************************************/
5 /* Loader module for serial drivers */
9 /* (C) 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 /*****************************************************************************/
43 /*****************************************************************************/
45 /*****************************************************************************/
49 /* Pointer to serial driver, exported from ser-kernel.s */
54 /*****************************************************************************/
56 /*****************************************************************************/
60 unsigned char __fastcall__ ser_load_driver (const char* name)
61 /* Load a serial driver and return an error code */
63 static struct mod_ctrl ctrl = {
64 read /* Read from disk */
68 /* Check if we do already have a driver loaded. If so, remove it. */
73 /* Now open the file */
74 ctrl.callerdata = open (name, O_RDONLY);
75 if (ctrl.callerdata >= 0) {
78 Res = mod_load (&ctrl);
80 /* Close the input file */
81 close (ctrl.callerdata);
83 /* Check the return code */
84 if (Res == MLOAD_OK) {
86 /* Check the driver signature, install the driver */
87 return ser_install (ctrl.module);
92 /* Error loading the driver */
93 return SER_ERR_CANNOT_LOAD;