7 #define _BORLAND_DOS_REGS 1
25 //added on 9/15/98 by Victor Rachels to add cd controls
27 //end this section addition - Victor Rachels
30 void install_int3_handler(void);
33 int __far descent_critical_error_handler( unsigned deverr, unsigned errcode, unsigned far * devhdr );
42 heap_status = _heapset( 0xFF );
46 mprintf((1, "ERROR - heap is damaged\n"));
50 mprintf((1, "ERROR - bad node in heap\n" ));
61 int is_3dbios_installed()
64 memset(&rregs,0,sizeof(dpmi_real_regs));
67 dpmi_real_int386x( 0x10, &rregs );
68 if ( (rregs.edx & 0xFFFF) != 0x3344 )
75 // Returns 1 if ok, 0 if failed...
80 memset(®s,0,sizeof(regs));
83 int386( 0x15, ®s, ®s );
84 if ( ( regs.x.eax & 0xFFFF ) == 0x4753 /*'SG'*/ )
90 void check_dos_version()
95 memset(®s,0,sizeof(regs));
96 regs.x.eax = 0x3000; // Get MS-DOS Version Number
97 int386( 0x21, ®s, ®s );
103 printf( "Using MS-DOS version %d.%d\nThis is not compatable with Descent.", major, minor);
106 //printf( "\nUsing MS-DOS %d.%d...\n", major, minor );
109 void dos_check_file_handles(int num_required)
114 if ( num_required > 16 )
118 for (i=0; i<16; i++ )
120 for (i=0; i<16; i++ ) {
121 fp[i] = fopen( "nul", "wb" );
125 for (i=0; i<16; i++ ) {
129 if ( n < num_required ) {
130 printf( "\n%s\n", TXT_NOT_ENOUGH_HANDLES );
131 printf( "------------------------\n" );
132 printf( "%d/%d %s\n", n, num_required, TXT_HANDLES_1 );
133 printf( "%s\n", TXT_HANDLES_2);
134 printf( "%s\n", TXT_HANDLES_3);
139 #define NEEDED_DOS_MEMORY ( 300*1024) // 300 K
140 #define NEEDED_LINEAR_MEMORY (7680*1024) // 7.5 MB
141 #define LOW_PHYSICAL_MEMORY_CUTOFF (5*1024*1024) // 5.0 MB
142 #define NEEDED_PHYSICAL_MEMORY (2000*1024) // 2000 KB
144 extern int piggy_low_memory;
146 void mem_int_to_string( int number, char *dest )
151 sprintf( buffer, "%d", number );
155 // Don't bother with less than 3 digits
156 sprintf( dest, "%d", number );
162 for (i=0; i<l; i++ ) {
177 printf( "\n%s\n", TXT_AVAILABLE_MEMORY);
178 printf( "----------------\n" );
179 mem_int_to_string( dpmi_dos_memory/1024, text );
180 printf( "Conventional: %7s KB\n", text );
181 mem_int_to_string( dpmi_physical_memory/1024, text );
182 printf( "Extended: %7s KB\n", text );
183 if ( dpmi_available_memory > dpmi_physical_memory ) {
184 mem_int_to_string( (dpmi_available_memory-dpmi_physical_memory)/1024, text );
186 mem_int_to_string( 0, text );
188 printf( "Virtual: %7s KB\n", text );
191 if ( dpmi_dos_memory < NEEDED_DOS_MEMORY ) {
192 printf( "%d %s\n", NEEDED_DOS_MEMORY - dpmi_dos_memory, TXT_MEMORY_CONFIG );
196 if ( dpmi_available_memory < NEEDED_LINEAR_MEMORY ) {
197 if ( dpmi_virtual_memory ) {
198 printf( "%d %s\n", NEEDED_LINEAR_MEMORY - dpmi_available_memory, TXT_RECONFIGURE_VMM );
200 printf( "%d %s\n", NEEDED_LINEAR_MEMORY - dpmi_available_memory, TXT_MORE_MEMORY );
201 printf( "%s\n", TXT_MORE_MEMORY_2);
206 if ( dpmi_physical_memory < NEEDED_PHYSICAL_MEMORY ) {
207 printf( "%d %s\n", NEEDED_PHYSICAL_MEMORY - dpmi_physical_memory, TXT_PHYSICAL_MEMORY );
208 if ( dpmi_virtual_memory ) {
209 printf( "%s\n", TXT_PHYSICAL_MEMORY_2);
214 if ( dpmi_physical_memory < LOW_PHYSICAL_MEMORY_CUTOFF ) {
215 piggy_low_memory = 1;
219 //NO_STACK_SIZE_CHECK uint * stack, *stack_ptr;
220 //NO_STACK_SIZE_CHECK int stack_size, unused_stack_space;
221 //NO_STACK_SIZE_CHECK int sil;
222 //NO_STACK_SIZE_CHECK
223 //NO_STACK_SIZE_CHECK int main(int argc,char **argv)
224 //NO_STACK_SIZE_CHECK {
225 //NO_STACK_SIZE_CHECK uint ret_value;
226 //NO_STACK_SIZE_CHECK
227 //NO_STACK_SIZE_CHECK unused_stack_space = 0;
228 //NO_STACK_SIZE_CHECK stack = &ret_value;
229 //NO_STACK_SIZE_CHECK stack_size = stackavail()/4;
230 //NO_STACK_SIZE_CHECK
231 //NO_STACK_SIZE_CHECK for ( sil=0; sil<stack_size; sil++ ) {
232 //NO_STACK_SIZE_CHECK stack--;
233 //NO_STACK_SIZE_CHECK *stack = 0xface0123;
234 //NO_STACK_SIZE_CHECK }
235 //NO_STACK_SIZE_CHECK
236 //NO_STACK_SIZE_CHECK ret_value = descent_main( argc, argv ); // Rename main to be descent_main
237 //NO_STACK_SIZE_CHECK
238 //NO_STACK_SIZE_CHECK for ( sil=0; sil<stack_size; sil++ ) {
239 //NO_STACK_SIZE_CHECK if ( *stack == 0xface0123 )
240 //NO_STACK_SIZE_CHECK unused_stack_space++;
241 //NO_STACK_SIZE_CHECK stack++;
242 //NO_STACK_SIZE_CHECK }
243 //NO_STACK_SIZE_CHECK
244 //NO_STACK_SIZE_CHECK mprintf(( 0, "Program used %d/%d stack space\n", (stack_size - unused_stack_space)*4, stack_size*4 ));
245 //NO_STACK_SIZE_CHECK key_getch();
246 //NO_STACK_SIZE_CHECK
247 //NO_STACK_SIZE_CHECK return ret_value;
248 //NO_STACK_SIZE_CHECK }
250 extern int digi_timer_rate;
253 #pragma off (check_stack)
254 int __far descent_critical_error_handler(unsigned deverror, unsigned errcode, unsigned __far * devhdr )
257 descent_critical_error++;
258 descent_critical_deverror = deverror;
259 descent_critical_errcode = errcode;
260 return _HARDERR_FAIL;
262 void chandler_end (void) // dummy functions
265 #pragma on (check_stack)
268 void arch_init_start() {
269 // Initialize DPMI before anything else!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
270 // (To check memory size and availbabitliy and allocate some low DOS memory)
271 // adb: no TXT_... loaded yet
272 //if (Inferno_verbose) printf( "%s... ", TXT_INITIALIZING_DPMI);
273 con_printf(CON_VERBOSE, "Initializing DPMI services... ");
274 dpmi_init(1); // Before anything
275 con_printf(CON_VERBOSE, "\n" );
278 con_printf(CON_VERBOSE, "\n%s...", TXT_INITIALIZING_CRIT);
279 if (!dpmi_lock_region((void near *)descent_critical_error_handler,(char *)chandler_end - (char near *)descent_critical_error_handler)) {
280 Error( "Unable to lock critial error handler" );
282 if (!dpmi_lock_region(&descent_critical_error,sizeof(int))) {
283 Error( "Unable to lock critial error handler" );
285 if (!dpmi_lock_region(&descent_critical_deverror,sizeof(unsigned))) {
286 Error( "Unable to lock critial error handler" );
288 if (!dpmi_lock_region(&descent_critical_errcode,sizeof(unsigned))) {
289 Error( "Unable to lock critial error handler" );
291 _harderr((void *) descent_critical_error_handler );
292 //Above line modified by KRB, added (void *) cast
298 if ( !FindArg( "-nodoscheck" ))
301 if ( !FindArg( "-nofilecheck" ))
302 dos_check_file_handles(5);
304 if ( !FindArg( "-nomemcheck" ))
309 mopen( 0, 9, 1, 78, 15, "Debug Spew");
310 mopen( 1, 2, 1, 78, 5, "Errors & Serious Warnings");
313 /* if (!WVIDEO_running)
314 mprintf((0,"WVIDEO_running = %d\n",WVIDEO_running));*/
316 //if (!WVIDEO_running) install_int3_handler();
319 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_2);
321 timer_set_rate( digi_timer_rate ); // Tell our timer how fast to go (120 Hz)
322 joy_set_timer_rate( digi_timer_rate ); // Tell joystick how fast timer is going
324 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_3);
326 if (!FindArg( "-nomouse" )) {
327 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_4);
328 if (FindArg( "-nocyberman" ))
333 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_5);
335 if (!FindArg( "-nojoystick" )) {
336 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_6);
338 if ( FindArg( "-joyslow" )) {
339 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_7);
340 joy_set_slow_reading(JOY_SLOW_READINGS);
342 if ( FindArg( "-joypolled" )) {
343 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_8);
344 joy_set_slow_reading(JOY_POLLED_READINGS);
346 if ( FindArg( "-joybios" )) {
347 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_9);
348 joy_set_slow_reading(JOY_BIOS_READINGS);
350 if ( FindArg( "-joynice" )) {
351 con_printf(CON_VERBOSE, "\n%s", "Using nice joystick poller..." );
352 joy_set_slow_reading(JOY_FRIENDLY_READINGS);
354 if ( FindArg( "-gameport" )) {
355 if ( init_gameport() ) {
356 joy_set_slow_reading(JOY_BIOS_READINGS);
358 Error( "\nCouldn't initialize the Notebook Gameport.\nMake sure the NG driver is loaded.\n" );
362 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_10);
365 if (Inferno_verbose) printf( "\n%s", TXT_VERBOSE_11);
370 #endif // __ENV_DJGPP__