1 /****************************************************************************
3 * SciTech Nucleus Graphics Architecture
5 * Copyright (C) 1991-1998 SciTech Software, Inc.
8 * ======================================================================
9 * |REMOVAL OR MODIFICATION OF THIS HEADER IS STRICTLY PROHIBITED BY LAW|
11 * |This copyrighted computer code contains proprietary technology |
12 * |owned by SciTech Software, Inc., located at 505 Wall Street, |
13 * |Chico, CA 95928 USA (http://www.scitechsoft.com). |
15 * |The contents of this file are subject to the SciTech Nucleus |
16 * |License; you may *not* use this file or related software except in |
17 * |compliance with the License. You may obtain a copy of the License |
18 * |at http://www.scitechsoft.com/nucleus-license.txt |
20 * |Software distributed under the License is distributed on an |
21 * |"AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or |
22 * |implied. See the License for the specific language governing |
23 * |rights and limitations under the License. |
25 * |REMOVAL OR MODIFICATION OF THIS HEADER IS STRICTLY PROHIBITED BY LAW|
26 * ======================================================================
31 * Description: OS specific Nucleus Graphics Architecture services for
32 * the MSDOS operating system.
34 ****************************************************************************/
42 /*-------------------------- Implementation -------------------------------*/
44 /****************************************************************************
46 path - Local path to the Nucleus driver files.
49 This function is used by the application program to override the location
50 of the Nucleus driver files that are loaded. Normally the loader code
51 will look in the system Nucleus directories first, then in the 'drivers'
52 directory relative to the current working directory, and finally relative
53 to the MGL_ROOT environment variable.
54 ****************************************************************************/
55 void NAPI GA_setLocalPath(
58 PM_setLocalBPDPath(path);
61 /****************************************************************************
63 Pointer to the system wide PM library imports, or the internal version if none
66 Nothing to do here for DOS. Basically since DOS has no system wide shared
67 library mechanism we are essentially screwed if the binary API changes.
68 By default for 32-bit DOS apps the local Nucleus drivers should always be
69 used in preference to the system wide Nucleus drivers.
70 ****************************************************************************/
71 PM_imports * NAPI GA_getSystemPMImports(void)
76 /****************************************************************************
78 Nothing special for this OS.
79 ****************************************************************************/
80 ibool NAPI GA_getSharedExports(
89 #if !defined(TEST_HARNESS) && !defined(VBETEST)
90 /****************************************************************************
92 Nothing special for this OS
93 ****************************************************************************/
94 ibool NAPI GA_queryFunctions(
99 return __GA_exports.GA_queryFunctions(dc,id,funcs);
102 /****************************************************************************
104 Nothing special for this OS
105 ****************************************************************************/
106 ibool NAPI REF2D_queryFunctions(
111 return __GA_exports.REF2D_queryFunctions(ref2d,id,funcs);
115 /****************************************************************************
117 This function initialises the high precision timing functions for the DOS
118 Nucleus loader library.
119 ****************************************************************************/
120 ibool NAPI GA_TimerInit(void)
122 if (_GA_haveCPUID() && (_GA_getCPUIDFeatures() & CPU_HaveRDTSC) != 0)
127 /****************************************************************************
129 This function reads the high resolution timer.
130 ****************************************************************************/
131 void NAPI GA_TimerRead(
132 GA_largeInteger *value)
134 _GA_readTimeStamp(value);