2 * $Source: /cvs/cvsroot/d2x/arch/dos_init.c,v $
5 * $Date: 2001-01-29 13:35:08 $
9 * $Log: not supported by cvs2svn $
19 #define _BORLAND_DOS_REGS 1
37 //added on 9/15/98 by Victor Rachels to add cd controls
39 //end this section addition - Victor Rachels
42 void install_int3_handler(void);
45 int __far descent_critical_error_handler( unsigned deverr, unsigned errcode, unsigned far * devhdr );
54 heap_status = _heapset( 0xFF );
58 mprintf((1, "ERROR - heap is damaged\n"));
62 mprintf((1, "ERROR - bad node in heap\n" ));
73 int is_3dbios_installed()
76 memset(&rregs,0,sizeof(dpmi_real_regs));
79 dpmi_real_int386x( 0x10, &rregs );
80 if ( (rregs.edx & 0xFFFF) != 0x3344 )
87 // Returns 1 if ok, 0 if failed...
92 memset(®s,0,sizeof(regs));
95 int386( 0x15, ®s, ®s );
96 if ( ( regs.x.eax & 0xFFFF ) == 0x4753 /*'SG'*/ )
102 void check_dos_version()
107 memset(®s,0,sizeof(regs));
108 regs.x.eax = 0x3000; // Get MS-DOS Version Number
109 int386( 0x21, ®s, ®s );
115 printf( "Using MS-DOS version %d.%d\nThis is not compatable with Descent.", major, minor);
118 //printf( "\nUsing MS-DOS %d.%d...\n", major, minor );
121 void dos_check_file_handles(int num_required)
126 if ( num_required > 16 )
130 for (i=0; i<16; i++ )
132 for (i=0; i<16; i++ ) {
133 fp[i] = fopen( "nul", "wb" );
137 for (i=0; i<16; i++ ) {
141 if ( n < num_required ) {
142 printf( "\n%s\n", TXT_NOT_ENOUGH_HANDLES );
143 printf( "------------------------\n" );
144 printf( "%d/%d %s\n", n, num_required, TXT_HANDLES_1 );
145 printf( "%s\n", TXT_HANDLES_2);
146 printf( "%s\n", TXT_HANDLES_3);
151 #define NEEDED_DOS_MEMORY ( 300*1024) // 300 K
152 #define NEEDED_LINEAR_MEMORY (7680*1024) // 7.5 MB
153 #define LOW_PHYSICAL_MEMORY_CUTOFF (5*1024*1024) // 5.0 MB
154 #define NEEDED_PHYSICAL_MEMORY (2000*1024) // 2000 KB
156 extern int piggy_low_memory;
158 void mem_int_to_string( int number, char *dest )
163 sprintf( buffer, "%d", number );
167 // Don't bother with less than 3 digits
168 sprintf( dest, "%d", number );
174 for (i=0; i<l; i++ ) {
189 printf( "\n%s\n", TXT_AVAILABLE_MEMORY);
190 printf( "----------------\n" );
191 mem_int_to_string( dpmi_dos_memory/1024, text );
192 printf( "Conventional: %7s KB\n", text );
193 mem_int_to_string( dpmi_physical_memory/1024, text );
194 printf( "Extended: %7s KB\n", text );
195 if ( dpmi_available_memory > dpmi_physical_memory ) {
196 mem_int_to_string( (dpmi_available_memory-dpmi_physical_memory)/1024, text );
198 mem_int_to_string( 0, text );
200 printf( "Virtual: %7s KB\n", text );
203 if ( dpmi_dos_memory < NEEDED_DOS_MEMORY ) {
204 printf( "%d %s\n", NEEDED_DOS_MEMORY - dpmi_dos_memory, TXT_MEMORY_CONFIG );
208 if ( dpmi_available_memory < NEEDED_LINEAR_MEMORY ) {
209 if ( dpmi_virtual_memory ) {
210 printf( "%d %s\n", NEEDED_LINEAR_MEMORY - dpmi_available_memory, TXT_RECONFIGURE_VMM );
212 printf( "%d %s\n", NEEDED_LINEAR_MEMORY - dpmi_available_memory, TXT_MORE_MEMORY );
213 printf( "%s\n", TXT_MORE_MEMORY_2);
218 if ( dpmi_physical_memory < NEEDED_PHYSICAL_MEMORY ) {
219 printf( "%d %s\n", NEEDED_PHYSICAL_MEMORY - dpmi_physical_memory, TXT_PHYSICAL_MEMORY );
220 if ( dpmi_virtual_memory ) {
221 printf( "%s\n", TXT_PHYSICAL_MEMORY_2);
226 if ( dpmi_physical_memory < LOW_PHYSICAL_MEMORY_CUTOFF ) {
227 piggy_low_memory = 1;
231 //NO_STACK_SIZE_CHECK uint * stack, *stack_ptr;
232 //NO_STACK_SIZE_CHECK int stack_size, unused_stack_space;
233 //NO_STACK_SIZE_CHECK int sil;
234 //NO_STACK_SIZE_CHECK
235 //NO_STACK_SIZE_CHECK int main(int argc,char **argv)
236 //NO_STACK_SIZE_CHECK {
237 //NO_STACK_SIZE_CHECK uint ret_value;
238 //NO_STACK_SIZE_CHECK
239 //NO_STACK_SIZE_CHECK unused_stack_space = 0;
240 //NO_STACK_SIZE_CHECK stack = &ret_value;
241 //NO_STACK_SIZE_CHECK stack_size = stackavail()/4;
242 //NO_STACK_SIZE_CHECK
243 //NO_STACK_SIZE_CHECK for ( sil=0; sil<stack_size; sil++ ) {
244 //NO_STACK_SIZE_CHECK stack--;
245 //NO_STACK_SIZE_CHECK *stack = 0xface0123;
246 //NO_STACK_SIZE_CHECK }
247 //NO_STACK_SIZE_CHECK
248 //NO_STACK_SIZE_CHECK ret_value = descent_main( argc, argv ); // Rename main to be descent_main
249 //NO_STACK_SIZE_CHECK
250 //NO_STACK_SIZE_CHECK for ( sil=0; sil<stack_size; sil++ ) {
251 //NO_STACK_SIZE_CHECK if ( *stack == 0xface0123 )
252 //NO_STACK_SIZE_CHECK unused_stack_space++;
253 //NO_STACK_SIZE_CHECK stack++;
254 //NO_STACK_SIZE_CHECK }
255 //NO_STACK_SIZE_CHECK
256 //NO_STACK_SIZE_CHECK mprintf(( 0, "Program used %d/%d stack space\n", (stack_size - unused_stack_space)*4, stack_size*4 ));
257 //NO_STACK_SIZE_CHECK key_getch();
258 //NO_STACK_SIZE_CHECK
259 //NO_STACK_SIZE_CHECK return ret_value;
260 //NO_STACK_SIZE_CHECK }
262 extern int digi_timer_rate;
265 #pragma off (check_stack)
266 int __far descent_critical_error_handler(unsigned deverror, unsigned errcode, unsigned __far * devhdr )
269 descent_critical_error++;
270 descent_critical_deverror = deverror;
271 descent_critical_errcode = errcode;
272 return _HARDERR_FAIL;
274 void chandler_end (void) // dummy functions
277 #pragma on (check_stack)
280 void arch_init_start() {
281 // Initialize DPMI before anything else!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
282 // (To check memory size and availbabitliy and allocate some low DOS memory)
283 // adb: no TXT_... loaded yet
284 //if (Inferno_verbose) printf( "%s... ", TXT_INITIALIZING_DPMI);
285 con_printf(CON_VERBOSE, "Initializing DPMI services... ");
286 dpmi_init(1); // Before anything
287 con_printf(CON_VERBOSE, "\n" );
290 con_printf(CON_VERBOSE, "\n%s...", TXT_INITIALIZING_CRIT);
291 if (!dpmi_lock_region((void near *)descent_critical_error_handler,(char *)chandler_end - (char near *)descent_critical_error_handler)) {
292 Error( "Unable to lock critial error handler" );
294 if (!dpmi_lock_region(&descent_critical_error,sizeof(int))) {
295 Error( "Unable to lock critial error handler" );
297 if (!dpmi_lock_region(&descent_critical_deverror,sizeof(unsigned))) {
298 Error( "Unable to lock critial error handler" );
300 if (!dpmi_lock_region(&descent_critical_errcode,sizeof(unsigned))) {
301 Error( "Unable to lock critial error handler" );
303 _harderr((void *) descent_critical_error_handler );
304 //Above line modified by KRB, added (void *) cast
310 if ( !FindArg( "-nodoscheck" ))
313 if ( !FindArg( "-nofilecheck" ))
314 dos_check_file_handles(5);
316 if ( !FindArg( "-nomemcheck" ))
321 mopen( 0, 9, 1, 78, 15, "Debug Spew");
322 mopen( 1, 2, 1, 78, 5, "Errors & Serious Warnings");
325 /* if (!WVIDEO_running)
326 mprintf((0,"WVIDEO_running = %d\n",WVIDEO_running));*/
328 //if (!WVIDEO_running) install_int3_handler();
331 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_2);
333 timer_set_rate( digi_timer_rate ); // Tell our timer how fast to go (120 Hz)
334 joy_set_timer_rate( digi_timer_rate ); // Tell joystick how fast timer is going
336 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_3);
338 if (!FindArg( "-nomouse" )) {
339 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_4);
340 if (FindArg( "-nocyberman" ))
345 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_5);
347 if (!FindArg( "-nojoystick" )) {
348 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_6);
350 if ( FindArg( "-joyslow" )) {
351 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_7);
352 joy_set_slow_reading(JOY_SLOW_READINGS);
354 if ( FindArg( "-joypolled" )) {
355 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_8);
356 joy_set_slow_reading(JOY_POLLED_READINGS);
358 if ( FindArg( "-joybios" )) {
359 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_9);
360 joy_set_slow_reading(JOY_BIOS_READINGS);
362 if ( FindArg( "-joynice" )) {
363 con_printf(CON_VERBOSE, "\n%s", "Using nice joystick poller..." );
364 joy_set_slow_reading(JOY_FRIENDLY_READINGS);
366 if ( FindArg( "-gameport" )) {
367 if ( init_gameport() ) {
368 joy_set_slow_reading(JOY_BIOS_READINGS);
370 Error( "\nCouldn't initialize the Notebook Gameport.\nMake sure the NG driver is loaded.\n" );
374 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_10);
377 if (Inferno_verbose) printf( "\n%s", TXT_VERBOSE_11);