14 #define _BORLAND_DOS_REGS 1
32 //added on 9/15/98 by Victor Rachels to add cd controls
34 //end this section addition - Victor Rachels
37 void install_int3_handler(void);
40 int __far descent_critical_error_handler( unsigned deverr, unsigned errcode, unsigned far * devhdr );
49 heap_status = _heapset( 0xFF );
53 mprintf((1, "ERROR - heap is damaged\n"));
57 mprintf((1, "ERROR - bad node in heap\n" ));
68 int is_3dbios_installed()
71 memset(&rregs,0,sizeof(dpmi_real_regs));
74 dpmi_real_int386x( 0x10, &rregs );
75 if ( (rregs.edx & 0xFFFF) != 0x3344 )
82 // Returns 1 if ok, 0 if failed...
87 memset(®s,0,sizeof(regs));
90 int386( 0x15, ®s, ®s );
91 if ( ( regs.x.eax & 0xFFFF ) == 0x4753 /*'SG'*/ )
97 void check_dos_version()
102 memset(®s,0,sizeof(regs));
103 regs.x.eax = 0x3000; // Get MS-DOS Version Number
104 int386( 0x21, ®s, ®s );
110 printf( "Using MS-DOS version %d.%d\nThis is not compatable with Descent.", major, minor);
113 //printf( "\nUsing MS-DOS %d.%d...\n", major, minor );
116 void dos_check_file_handles(int num_required)
121 if ( num_required > 16 )
125 for (i=0; i<16; i++ )
127 for (i=0; i<16; i++ ) {
128 fp[i] = fopen( "nul", "wb" );
132 for (i=0; i<16; i++ ) {
136 if ( n < num_required ) {
137 printf( "\n%s\n", TXT_NOT_ENOUGH_HANDLES );
138 printf( "------------------------\n" );
139 printf( "%d/%d %s\n", n, num_required, TXT_HANDLES_1 );
140 printf( "%s\n", TXT_HANDLES_2);
141 printf( "%s\n", TXT_HANDLES_3);
146 #define NEEDED_DOS_MEMORY ( 300*1024) // 300 K
147 #define NEEDED_LINEAR_MEMORY (7680*1024) // 7.5 MB
148 #define LOW_PHYSICAL_MEMORY_CUTOFF (5*1024*1024) // 5.0 MB
149 #define NEEDED_PHYSICAL_MEMORY (2000*1024) // 2000 KB
151 extern int piggy_low_memory;
153 void mem_int_to_string( int number, char *dest )
158 sprintf( buffer, "%d", number );
162 // Don't bother with less than 3 digits
163 sprintf( dest, "%d", number );
169 for (i=0; i<l; i++ ) {
184 printf( "\n%s\n", TXT_AVAILABLE_MEMORY);
185 printf( "----------------\n" );
186 mem_int_to_string( dpmi_dos_memory/1024, text );
187 printf( "Conventional: %7s KB\n", text );
188 mem_int_to_string( dpmi_physical_memory/1024, text );
189 printf( "Extended: %7s KB\n", text );
190 if ( dpmi_available_memory > dpmi_physical_memory ) {
191 mem_int_to_string( (dpmi_available_memory-dpmi_physical_memory)/1024, text );
193 mem_int_to_string( 0, text );
195 printf( "Virtual: %7s KB\n", text );
198 if ( dpmi_dos_memory < NEEDED_DOS_MEMORY ) {
199 printf( "%d %s\n", NEEDED_DOS_MEMORY - dpmi_dos_memory, TXT_MEMORY_CONFIG );
203 if ( dpmi_available_memory < NEEDED_LINEAR_MEMORY ) {
204 if ( dpmi_virtual_memory ) {
205 printf( "%d %s\n", NEEDED_LINEAR_MEMORY - dpmi_available_memory, TXT_RECONFIGURE_VMM );
207 printf( "%d %s\n", NEEDED_LINEAR_MEMORY - dpmi_available_memory, TXT_MORE_MEMORY );
208 printf( "%s\n", TXT_MORE_MEMORY_2);
213 if ( dpmi_physical_memory < NEEDED_PHYSICAL_MEMORY ) {
214 printf( "%d %s\n", NEEDED_PHYSICAL_MEMORY - dpmi_physical_memory, TXT_PHYSICAL_MEMORY );
215 if ( dpmi_virtual_memory ) {
216 printf( "%s\n", TXT_PHYSICAL_MEMORY_2);
221 if ( dpmi_physical_memory < LOW_PHYSICAL_MEMORY_CUTOFF ) {
222 piggy_low_memory = 1;
226 //NO_STACK_SIZE_CHECK uint * stack, *stack_ptr;
227 //NO_STACK_SIZE_CHECK int stack_size, unused_stack_space;
228 //NO_STACK_SIZE_CHECK int sil;
229 //NO_STACK_SIZE_CHECK
230 //NO_STACK_SIZE_CHECK int main(int argc,char **argv)
231 //NO_STACK_SIZE_CHECK {
232 //NO_STACK_SIZE_CHECK uint ret_value;
233 //NO_STACK_SIZE_CHECK
234 //NO_STACK_SIZE_CHECK unused_stack_space = 0;
235 //NO_STACK_SIZE_CHECK stack = &ret_value;
236 //NO_STACK_SIZE_CHECK stack_size = stackavail()/4;
237 //NO_STACK_SIZE_CHECK
238 //NO_STACK_SIZE_CHECK for ( sil=0; sil<stack_size; sil++ ) {
239 //NO_STACK_SIZE_CHECK stack--;
240 //NO_STACK_SIZE_CHECK *stack = 0xface0123;
241 //NO_STACK_SIZE_CHECK }
242 //NO_STACK_SIZE_CHECK
243 //NO_STACK_SIZE_CHECK ret_value = descent_main( argc, argv ); // Rename main to be descent_main
244 //NO_STACK_SIZE_CHECK
245 //NO_STACK_SIZE_CHECK for ( sil=0; sil<stack_size; sil++ ) {
246 //NO_STACK_SIZE_CHECK if ( *stack == 0xface0123 )
247 //NO_STACK_SIZE_CHECK unused_stack_space++;
248 //NO_STACK_SIZE_CHECK stack++;
249 //NO_STACK_SIZE_CHECK }
250 //NO_STACK_SIZE_CHECK
251 //NO_STACK_SIZE_CHECK mprintf(( 0, "Program used %d/%d stack space\n", (stack_size - unused_stack_space)*4, stack_size*4 ));
252 //NO_STACK_SIZE_CHECK key_getch();
253 //NO_STACK_SIZE_CHECK
254 //NO_STACK_SIZE_CHECK return ret_value;
255 //NO_STACK_SIZE_CHECK }
257 extern int digi_timer_rate;
260 #pragma off (check_stack)
261 int __far descent_critical_error_handler(unsigned deverror, unsigned errcode, unsigned __far * devhdr )
264 descent_critical_error++;
265 descent_critical_deverror = deverror;
266 descent_critical_errcode = errcode;
267 return _HARDERR_FAIL;
269 void chandler_end (void) // dummy functions
272 #pragma on (check_stack)
275 void arch_init_start() {
276 // Initialize DPMI before anything else!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
277 // (To check memory size and availbabitliy and allocate some low DOS memory)
278 // adb: no TXT_... loaded yet
279 //if (Inferno_verbose) printf( "%s... ", TXT_INITIALIZING_DPMI);
280 con_printf(CON_VERBOSE, "Initializing DPMI services... ");
281 dpmi_init(1); // Before anything
282 con_printf(CON_VERBOSE, "\n" );
285 con_printf(CON_VERBOSE, "\n%s...", TXT_INITIALIZING_CRIT);
286 if (!dpmi_lock_region((void near *)descent_critical_error_handler,(char *)chandler_end - (char near *)descent_critical_error_handler)) {
287 Error( "Unable to lock critial error handler" );
289 if (!dpmi_lock_region(&descent_critical_error,sizeof(int))) {
290 Error( "Unable to lock critial error handler" );
292 if (!dpmi_lock_region(&descent_critical_deverror,sizeof(unsigned))) {
293 Error( "Unable to lock critial error handler" );
295 if (!dpmi_lock_region(&descent_critical_errcode,sizeof(unsigned))) {
296 Error( "Unable to lock critial error handler" );
298 _harderr((void *) descent_critical_error_handler );
299 //Above line modified by KRB, added (void *) cast
305 if ( !FindArg( "-nodoscheck" ))
308 if ( !FindArg( "-nofilecheck" ))
309 dos_check_file_handles(5);
311 if ( !FindArg( "-nomemcheck" ))
316 mopen( 0, 9, 1, 78, 15, "Debug Spew");
317 mopen( 1, 2, 1, 78, 5, "Errors & Serious Warnings");
320 /* if (!WVIDEO_running)
321 mprintf((0,"WVIDEO_running = %d\n",WVIDEO_running));*/
323 //if (!WVIDEO_running) install_int3_handler();
326 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_2);
328 timer_set_rate( digi_timer_rate ); // Tell our timer how fast to go (120 Hz)
329 joy_set_timer_rate( digi_timer_rate ); // Tell joystick how fast timer is going
331 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_3);
333 if (!FindArg( "-nomouse" )) {
334 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_4);
336 con_printf(CON_NORMAL, "\nError initializing mouse.\n");
338 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_5);
340 if (!FindArg( "-nojoystick" )) {
341 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_6);
343 if ( FindArg( "-joyslow" )) {
344 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_7);
345 joy_set_slow_reading(JOY_SLOW_READINGS);
347 if ( FindArg( "-joypolled" )) {
348 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_8);
349 joy_set_slow_reading(JOY_POLLED_READINGS);
351 if ( FindArg( "-joybios" )) {
352 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_9);
353 joy_set_slow_reading(JOY_BIOS_READINGS);
355 if ( FindArg( "-joynice" )) {
356 con_printf(CON_VERBOSE, "\n%s", "Using nice joystick poller..." );
357 joy_set_slow_reading(JOY_FRIENDLY_READINGS);
359 if ( FindArg( "-gameport" )) {
360 if ( init_gameport() ) {
361 joy_set_slow_reading(JOY_BIOS_READINGS);
363 Error( "\nCouldn't initialize the Notebook Gameport.\nMake sure the NG driver is loaded.\n" );
367 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_10);
370 if (Inferno_verbose) printf( "\n%s", TXT_VERBOSE_11);