2 * $Source: /cvs/cvsroot/d2x/arch/dos/init.c,v $
5 * $Date: 2001-10-19 09:01:56 $
9 * $Log: not supported by cvs2svn $
10 * Revision 1.3 2001/01/29 13:35:08 bradleyb
11 * Fixed build system, minor fixes
22 #define _BORLAND_DOS_REGS 1
40 //added on 9/15/98 by Victor Rachels to add cd controls
42 //end this section addition - Victor Rachels
45 void install_int3_handler(void);
48 int __far descent_critical_error_handler( unsigned deverr, unsigned errcode, unsigned far * devhdr );
57 heap_status = _heapset( 0xFF );
61 mprintf((1, "ERROR - heap is damaged\n"));
65 mprintf((1, "ERROR - bad node in heap\n" ));
76 int is_3dbios_installed()
79 memset(&rregs,0,sizeof(dpmi_real_regs));
82 dpmi_real_int386x( 0x10, &rregs );
83 if ( (rregs.edx & 0xFFFF) != 0x3344 )
90 // Returns 1 if ok, 0 if failed...
95 memset(®s,0,sizeof(regs));
98 int386( 0x15, ®s, ®s );
99 if ( ( regs.x.eax & 0xFFFF ) == 0x4753 /*'SG'*/ )
105 void check_dos_version()
110 memset(®s,0,sizeof(regs));
111 regs.x.eax = 0x3000; // Get MS-DOS Version Number
112 int386( 0x21, ®s, ®s );
118 printf( "Using MS-DOS version %d.%d\nThis is not compatable with Descent.", major, minor);
121 //printf( "\nUsing MS-DOS %d.%d...\n", major, minor );
124 void dos_check_file_handles(int num_required)
129 if ( num_required > 16 )
133 for (i=0; i<16; i++ )
135 for (i=0; i<16; i++ ) {
136 fp[i] = fopen( "nul", "wb" );
140 for (i=0; i<16; i++ ) {
144 if ( n < num_required ) {
145 printf( "\n%s\n", TXT_NOT_ENOUGH_HANDLES );
146 printf( "------------------------\n" );
147 printf( "%d/%d %s\n", n, num_required, TXT_HANDLES_1 );
148 printf( "%s\n", TXT_HANDLES_2);
149 printf( "%s\n", TXT_HANDLES_3);
154 #define NEEDED_DOS_MEMORY ( 300*1024) // 300 K
155 #define NEEDED_LINEAR_MEMORY (7680*1024) // 7.5 MB
156 #define LOW_PHYSICAL_MEMORY_CUTOFF (5*1024*1024) // 5.0 MB
157 #define NEEDED_PHYSICAL_MEMORY (2000*1024) // 2000 KB
159 extern int piggy_low_memory;
161 void mem_int_to_string( int number, char *dest )
166 sprintf( buffer, "%d", number );
170 // Don't bother with less than 3 digits
171 sprintf( dest, "%d", number );
177 for (i=0; i<l; i++ ) {
192 printf( "\n%s\n", TXT_AVAILABLE_MEMORY);
193 printf( "----------------\n" );
194 mem_int_to_string( dpmi_dos_memory/1024, text );
195 printf( "Conventional: %7s KB\n", text );
196 mem_int_to_string( dpmi_physical_memory/1024, text );
197 printf( "Extended: %7s KB\n", text );
198 if ( dpmi_available_memory > dpmi_physical_memory ) {
199 mem_int_to_string( (dpmi_available_memory-dpmi_physical_memory)/1024, text );
201 mem_int_to_string( 0, text );
203 printf( "Virtual: %7s KB\n", text );
206 if ( dpmi_dos_memory < NEEDED_DOS_MEMORY ) {
207 printf( "%d %s\n", NEEDED_DOS_MEMORY - dpmi_dos_memory, TXT_MEMORY_CONFIG );
211 if ( dpmi_available_memory < NEEDED_LINEAR_MEMORY ) {
212 if ( dpmi_virtual_memory ) {
213 printf( "%d %s\n", NEEDED_LINEAR_MEMORY - dpmi_available_memory, TXT_RECONFIGURE_VMM );
215 printf( "%d %s\n", NEEDED_LINEAR_MEMORY - dpmi_available_memory, TXT_MORE_MEMORY );
216 printf( "%s\n", TXT_MORE_MEMORY_2);
221 if ( dpmi_physical_memory < NEEDED_PHYSICAL_MEMORY ) {
222 printf( "%d %s\n", NEEDED_PHYSICAL_MEMORY - dpmi_physical_memory, TXT_PHYSICAL_MEMORY );
223 if ( dpmi_virtual_memory ) {
224 printf( "%s\n", TXT_PHYSICAL_MEMORY_2);
229 if ( dpmi_physical_memory < LOW_PHYSICAL_MEMORY_CUTOFF ) {
230 piggy_low_memory = 1;
234 //NO_STACK_SIZE_CHECK uint * stack, *stack_ptr;
235 //NO_STACK_SIZE_CHECK int stack_size, unused_stack_space;
236 //NO_STACK_SIZE_CHECK int sil;
237 //NO_STACK_SIZE_CHECK
238 //NO_STACK_SIZE_CHECK int main(int argc,char **argv)
239 //NO_STACK_SIZE_CHECK {
240 //NO_STACK_SIZE_CHECK uint ret_value;
241 //NO_STACK_SIZE_CHECK
242 //NO_STACK_SIZE_CHECK unused_stack_space = 0;
243 //NO_STACK_SIZE_CHECK stack = &ret_value;
244 //NO_STACK_SIZE_CHECK stack_size = stackavail()/4;
245 //NO_STACK_SIZE_CHECK
246 //NO_STACK_SIZE_CHECK for ( sil=0; sil<stack_size; sil++ ) {
247 //NO_STACK_SIZE_CHECK stack--;
248 //NO_STACK_SIZE_CHECK *stack = 0xface0123;
249 //NO_STACK_SIZE_CHECK }
250 //NO_STACK_SIZE_CHECK
251 //NO_STACK_SIZE_CHECK ret_value = descent_main( argc, argv ); // Rename main to be descent_main
252 //NO_STACK_SIZE_CHECK
253 //NO_STACK_SIZE_CHECK for ( sil=0; sil<stack_size; sil++ ) {
254 //NO_STACK_SIZE_CHECK if ( *stack == 0xface0123 )
255 //NO_STACK_SIZE_CHECK unused_stack_space++;
256 //NO_STACK_SIZE_CHECK stack++;
257 //NO_STACK_SIZE_CHECK }
258 //NO_STACK_SIZE_CHECK
259 //NO_STACK_SIZE_CHECK mprintf(( 0, "Program used %d/%d stack space\n", (stack_size - unused_stack_space)*4, stack_size*4 ));
260 //NO_STACK_SIZE_CHECK key_getch();
261 //NO_STACK_SIZE_CHECK
262 //NO_STACK_SIZE_CHECK return ret_value;
263 //NO_STACK_SIZE_CHECK }
265 extern int digi_timer_rate;
268 #pragma off (check_stack)
269 int __far descent_critical_error_handler(unsigned deverror, unsigned errcode, unsigned __far * devhdr )
272 descent_critical_error++;
273 descent_critical_deverror = deverror;
274 descent_critical_errcode = errcode;
275 return _HARDERR_FAIL;
277 void chandler_end (void) // dummy functions
280 #pragma on (check_stack)
283 void arch_init_start() {
284 // Initialize DPMI before anything else!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
285 // (To check memory size and availbabitliy and allocate some low DOS memory)
286 // adb: no TXT_... loaded yet
287 //if (Inferno_verbose) printf( "%s... ", TXT_INITIALIZING_DPMI);
288 con_printf(CON_VERBOSE, "Initializing DPMI services... ");
289 dpmi_init(1); // Before anything
290 con_printf(CON_VERBOSE, "\n" );
293 con_printf(CON_VERBOSE, "\n%s...", TXT_INITIALIZING_CRIT);
294 if (!dpmi_lock_region((void near *)descent_critical_error_handler,(char *)chandler_end - (char near *)descent_critical_error_handler)) {
295 Error( "Unable to lock critial error handler" );
297 if (!dpmi_lock_region(&descent_critical_error,sizeof(int))) {
298 Error( "Unable to lock critial error handler" );
300 if (!dpmi_lock_region(&descent_critical_deverror,sizeof(unsigned))) {
301 Error( "Unable to lock critial error handler" );
303 if (!dpmi_lock_region(&descent_critical_errcode,sizeof(unsigned))) {
304 Error( "Unable to lock critial error handler" );
306 _harderr((void *) descent_critical_error_handler );
307 //Above line modified by KRB, added (void *) cast
313 if ( !FindArg( "-nodoscheck" ))
316 if ( !FindArg( "-nofilecheck" ))
317 dos_check_file_handles(5);
319 if ( !FindArg( "-nomemcheck" ))
324 mopen( 0, 9, 1, 78, 15, "Debug Spew");
325 mopen( 1, 2, 1, 78, 5, "Errors & Serious Warnings");
328 /* if (!WVIDEO_running)
329 mprintf((0,"WVIDEO_running = %d\n",WVIDEO_running));*/
331 //if (!WVIDEO_running) install_int3_handler();
334 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_2);
336 timer_set_rate( digi_timer_rate ); // Tell our timer how fast to go (120 Hz)
337 joy_set_timer_rate( digi_timer_rate ); // Tell joystick how fast timer is going
339 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_3);
341 if (!FindArg( "-nomouse" )) {
342 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_4);
343 if (FindArg( "-nocyberman" ))
348 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_5);
350 if (!FindArg( "-nojoystick" )) {
351 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_6);
353 if ( FindArg( "-joyslow" )) {
354 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_7);
355 joy_set_slow_reading(JOY_SLOW_READINGS);
357 if ( FindArg( "-joypolled" )) {
358 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_8);
359 joy_set_slow_reading(JOY_POLLED_READINGS);
361 if ( FindArg( "-joybios" )) {
362 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_9);
363 joy_set_slow_reading(JOY_BIOS_READINGS);
365 if ( FindArg( "-joynice" )) {
366 con_printf(CON_VERBOSE, "\n%s", "Using nice joystick poller..." );
367 joy_set_slow_reading(JOY_FRIENDLY_READINGS);
369 if ( FindArg( "-gameport" )) {
370 if ( init_gameport() ) {
371 joy_set_slow_reading(JOY_BIOS_READINGS);
373 Error( "\nCouldn't initialize the Notebook Gameport.\nMake sure the NG driver is loaded.\n" );
377 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_10);
380 if (Inferno_verbose) printf( "\n%s", TXT_VERBOSE_11);