7 #define _BORLAND_DOS_REGS 1
11 #include "../../main/inferno.h"
12 #include "../../main/text.h"
24 //added on 9/15/98 by Victor Rachels to add cd controls
26 //end this section addition - Victor Rachels
29 void install_int3_handler(void);
32 int __far descent_critical_error_handler( unsigned deverr, unsigned errcode, unsigned far * devhdr );
41 heap_status = _heapset( 0xFF );
45 mprintf((1, "ERROR - heap is damaged\n"));
49 mprintf((1, "ERROR - bad node in heap\n" ));
60 int is_3dbios_installed()
63 memset(&rregs,0,sizeof(dpmi_real_regs));
66 dpmi_real_int386x( 0x10, &rregs );
67 if ( (rregs.edx & 0xFFFF) != 0x3344 )
74 // Returns 1 if ok, 0 if failed...
79 memset(®s,0,sizeof(regs));
82 int386( 0x15, ®s, ®s );
83 if ( ( regs.x.eax & 0xFFFF ) == 0x4753 /*'SG'*/ )
89 void check_dos_version()
94 memset(®s,0,sizeof(regs));
95 regs.x.eax = 0x3000; // Get MS-DOS Version Number
96 int386( 0x21, ®s, ®s );
102 printf( "Using MS-DOS version %d.%d\nThis is not compatable with Descent.", major, minor);
105 //printf( "\nUsing MS-DOS %d.%d...\n", major, minor );
108 void dos_check_file_handles(int num_required)
113 if ( num_required > 16 )
117 for (i=0; i<16; i++ )
119 for (i=0; i<16; i++ ) {
120 fp[i] = fopen( "nul", "wb" );
124 for (i=0; i<16; i++ ) {
128 if ( n < num_required ) {
129 printf( "\n%s\n", TXT_NOT_ENOUGH_HANDLES );
130 printf( "------------------------\n" );
131 printf( "%d/%d %s\n", n, num_required, TXT_HANDLES_1 );
132 printf( "%s\n", TXT_HANDLES_2);
133 printf( "%s\n", TXT_HANDLES_3);
138 #define NEEDED_DOS_MEMORY ( 300*1024) // 300 K
139 #define NEEDED_LINEAR_MEMORY (7680*1024) // 7.5 MB
140 #define LOW_PHYSICAL_MEMORY_CUTOFF (5*1024*1024) // 5.0 MB
141 #define NEEDED_PHYSICAL_MEMORY (2000*1024) // 2000 KB
143 extern int piggy_low_memory;
145 void mem_int_to_string( int number, char *dest )
150 sprintf( buffer, "%d", number );
154 // Don't bother with less than 3 digits
155 sprintf( dest, "%d", number );
161 for (i=0; i<l; i++ ) {
176 printf( "\n%s\n", TXT_AVAILABLE_MEMORY);
177 printf( "----------------\n" );
178 mem_int_to_string( dpmi_dos_memory/1024, text );
179 printf( "Conventional: %7s KB\n", text );
180 mem_int_to_string( dpmi_physical_memory/1024, text );
181 printf( "Extended: %7s KB\n", text );
182 if ( dpmi_available_memory > dpmi_physical_memory ) {
183 mem_int_to_string( (dpmi_available_memory-dpmi_physical_memory)/1024, text );
185 mem_int_to_string( 0, text );
187 printf( "Virtual: %7s KB\n", text );
190 if ( dpmi_dos_memory < NEEDED_DOS_MEMORY ) {
191 printf( "%d %s\n", NEEDED_DOS_MEMORY - dpmi_dos_memory, TXT_MEMORY_CONFIG );
195 if ( dpmi_available_memory < NEEDED_LINEAR_MEMORY ) {
196 if ( dpmi_virtual_memory ) {
197 printf( "%d %s\n", NEEDED_LINEAR_MEMORY - dpmi_available_memory, TXT_RECONFIGURE_VMM );
199 printf( "%d %s\n", NEEDED_LINEAR_MEMORY - dpmi_available_memory, TXT_MORE_MEMORY );
200 printf( "%s\n", TXT_MORE_MEMORY_2);
205 if ( dpmi_physical_memory < NEEDED_PHYSICAL_MEMORY ) {
206 printf( "%d %s\n", NEEDED_PHYSICAL_MEMORY - dpmi_physical_memory, TXT_PHYSICAL_MEMORY );
207 if ( dpmi_virtual_memory ) {
208 printf( "%s\n", TXT_PHYSICAL_MEMORY_2);
213 if ( dpmi_physical_memory < LOW_PHYSICAL_MEMORY_CUTOFF ) {
214 piggy_low_memory = 1;
218 //NO_STACK_SIZE_CHECK uint * stack, *stack_ptr;
219 //NO_STACK_SIZE_CHECK int stack_size, unused_stack_space;
220 //NO_STACK_SIZE_CHECK int sil;
221 //NO_STACK_SIZE_CHECK
222 //NO_STACK_SIZE_CHECK int main(int argc,char **argv)
223 //NO_STACK_SIZE_CHECK {
224 //NO_STACK_SIZE_CHECK uint ret_value;
225 //NO_STACK_SIZE_CHECK
226 //NO_STACK_SIZE_CHECK unused_stack_space = 0;
227 //NO_STACK_SIZE_CHECK stack = &ret_value;
228 //NO_STACK_SIZE_CHECK stack_size = stackavail()/4;
229 //NO_STACK_SIZE_CHECK
230 //NO_STACK_SIZE_CHECK for ( sil=0; sil<stack_size; sil++ ) {
231 //NO_STACK_SIZE_CHECK stack--;
232 //NO_STACK_SIZE_CHECK *stack = 0xface0123;
233 //NO_STACK_SIZE_CHECK }
234 //NO_STACK_SIZE_CHECK
235 //NO_STACK_SIZE_CHECK ret_value = descent_main( argc, argv ); // Rename main to be descent_main
236 //NO_STACK_SIZE_CHECK
237 //NO_STACK_SIZE_CHECK for ( sil=0; sil<stack_size; sil++ ) {
238 //NO_STACK_SIZE_CHECK if ( *stack == 0xface0123 )
239 //NO_STACK_SIZE_CHECK unused_stack_space++;
240 //NO_STACK_SIZE_CHECK stack++;
241 //NO_STACK_SIZE_CHECK }
242 //NO_STACK_SIZE_CHECK
243 //NO_STACK_SIZE_CHECK mprintf(( 0, "Program used %d/%d stack space\n", (stack_size - unused_stack_space)*4, stack_size*4 ));
244 //NO_STACK_SIZE_CHECK key_getch();
245 //NO_STACK_SIZE_CHECK
246 //NO_STACK_SIZE_CHECK return ret_value;
247 //NO_STACK_SIZE_CHECK }
249 extern int digi_timer_rate;
252 #pragma off (check_stack)
253 int __far descent_critical_error_handler(unsigned deverror, unsigned errcode, unsigned __far * devhdr )
256 descent_critical_error++;
257 descent_critical_deverror = deverror;
258 descent_critical_errcode = errcode;
259 return _HARDERR_FAIL;
261 void chandler_end (void) // dummy functions
264 #pragma on (check_stack)
267 void arch_init_start() {
268 // Initialize DPMI before anything else!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
269 // (To check memory size and availbabitliy and allocate some low DOS memory)
270 // adb: no TXT_... loaded yet
271 //if (Inferno_verbose) printf( "%s... ", TXT_INITIALIZING_DPMI);
272 con_printf(CON_VERBOSE, "Initializing DPMI services... ");
273 dpmi_init(1); // Before anything
274 con_printf(CON_VERBOSE, "\n" );
277 con_printf(CON_VERBOSE, "\n%s...", TXT_INITIALIZING_CRIT);
278 if (!dpmi_lock_region((void near *)descent_critical_error_handler,(char *)chandler_end - (char near *)descent_critical_error_handler)) {
279 Error( "Unable to lock critial error handler" );
281 if (!dpmi_lock_region(&descent_critical_error,sizeof(int))) {
282 Error( "Unable to lock critial error handler" );
284 if (!dpmi_lock_region(&descent_critical_deverror,sizeof(unsigned))) {
285 Error( "Unable to lock critial error handler" );
287 if (!dpmi_lock_region(&descent_critical_errcode,sizeof(unsigned))) {
288 Error( "Unable to lock critial error handler" );
290 _harderr((void *) descent_critical_error_handler );
291 //Above line modified by KRB, added (void *) cast
297 if ( !FindArg( "-nodoscheck" ))
300 if ( !FindArg( "-nofilecheck" ))
301 dos_check_file_handles(5);
303 if ( !FindArg( "-nomemcheck" ))
308 mopen( 0, 9, 1, 78, 15, "Debug Spew");
309 mopen( 1, 2, 1, 78, 5, "Errors & Serious Warnings");
312 /* if (!WVIDEO_running)
313 mprintf((0,"WVIDEO_running = %d\n",WVIDEO_running));*/
315 //if (!WVIDEO_running) install_int3_handler();
318 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_2);
320 timer_set_rate( digi_timer_rate ); // Tell our timer how fast to go (120 Hz)
321 joy_set_timer_rate( digi_timer_rate ); // Tell joystick how fast timer is going
323 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_3);
325 if (!FindArg( "-nomouse" )) {
326 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_4);
327 if (FindArg( "-nocyberman" ))
332 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_5);
334 if (!FindArg( "-nojoystick" )) {
335 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_6);
337 if ( FindArg( "-joyslow" )) {
338 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_7);
339 joy_set_slow_reading(JOY_SLOW_READINGS);
341 if ( FindArg( "-joypolled" )) {
342 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_8);
343 joy_set_slow_reading(JOY_POLLED_READINGS);
345 if ( FindArg( "-joybios" )) {
346 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_9);
347 joy_set_slow_reading(JOY_BIOS_READINGS);
349 if ( FindArg( "-joynice" )) {
350 con_printf(CON_VERBOSE, "\n%s", "Using nice joystick poller..." );
351 joy_set_slow_reading(JOY_FRIENDLY_READINGS);
353 if ( FindArg( "-gameport" )) {
354 if ( init_gameport() ) {
355 joy_set_slow_reading(JOY_BIOS_READINGS);
357 Error( "\nCouldn't initialize the Notebook Gameport.\nMake sure the NG driver is loaded.\n" );
361 con_printf(CON_VERBOSE, "\n%s", TXT_VERBOSE_10);
364 if (Inferno_verbose) printf( "\n%s", TXT_VERBOSE_11);
369 #endif // __ENV_DJGPP__