int main(void) { void *vfBuffer; printf("Program running in "); switch (PM_getModeType()) { case PM_realMode: printf("real mode.\n\n"); break; case PM_286: printf("16 bit protected mode.\n\n"); break; case PM_386: printf("32 bit protected mode.\n\n"); break; } if (!VF_available()) { printf("Virtual Linear Framebuffer not available.\n"); exit(1); } vfBuffer = VF_init(0xA0000,64,sizeof(code),code); if (!vfBuffer) { printf("Failure to initialise Virtual Linear Framebuffer!\n"); exit(1); } VF_exit(); printf("Virtual Linear Framebuffer set up successfully!\n"); return 0; }
int main(void) { FILE *f; printf("Program running in "); switch (PM_getModeType()) { case PM_realMode: printf("real mode.\n\n"); break; case PM_286: printf("16 bit protected mode.\n\n"); break; case PM_386: printf("32 bit protected mode.\n\n"); break; } PM_installAltCriticalHandler(criticalHandler); printf("Critical Error handler installed - trying to read from A: drive...\n"); f = fopen("a:\bog.bog","rb"); if (f) fclose(f); if (criticalError) { printf("Critical error occured on INT 21h function %02X!\n", axValue >> 8); } else
int main(void) { RMREGS regs; RMSREGS sregs; VgaInfoBlock vgaInfo; ushort *mode; uint vgLen; uchar *vgPtr; unsigned r_vgseg,r_vgoff; printf("Program running in "); switch (PM_getModeType()) { case PM_realMode: printf("real mode.\n\n"); break; case PM_286: printf("16 bit protected mode.\n\n"); break; case PM_386: printf("32 bit protected mode.\n\n"); break; } /* Allocate a 256 byte block of real memory for communicating with * the VESA BIOS. */ if ((vgPtr = PM_getVESABuf(&vgLen,&r_vgseg,&r_vgoff)) == NULL) { printf("Unable to allocate VESA memory buffer!\n"); exit(1); } /* Call the VESA VBE to see if it is out there */ regs.x.ax = 0x4F00; regs.x.di = r_vgoff; sregs.es = r_vgseg; memcpy(vgPtr,"VBE2",4); PM_int86x(0x10, ®s, ®s, &sregs); memcpy(&vgaInfo,vgPtr,sizeof(VgaInfoBlock)); if (regs.x.ax == 0x4F && strncmp(vgaInfo.VESASignature,"VESA",4) == 0) { printf("VESA VBE version %d.%d BIOS detected\n\n", vgaInfo.VESAVersion >> 8, vgaInfo.VESAVersion & 0xF); printf("Available video modes:\n"); mode = PM_mapRealPointer(vgaInfo.VideoModePtr >> 16, vgaInfo.VideoModePtr & 0xFFFF); while (*mode != 0xFFFF) { printf(" %04hXh (%08X)\n", *mode, (int)mode); mode++; } }
int main(void) { long oldCount; PM_lockHandle lh; printf("Program running in "); switch (PM_getModeType()) { case PM_realMode: printf("real mode.\n\n"); break; case PM_286: printf("16 bit protected mode.\n\n"); break; case PM_386: printf("32 bit protected mode.\n\n"); break; } /* Install our timer handler and lock handler pages in memory. It is * difficult to get the size of a function in C, but we know our * function is well less than 100 bytes (and an entire 4k page will * need to be locked by the server anyway). */ PM_lockCodePages((__codePtr)RTCHandler,100,&lh); PM_lockDataPages((void*)&count,sizeof(count),&lh); PM_installBreakHandler(); /* We *DONT* want Ctrl-Breaks! */ PM_setRealTimeClockHandler(RTCHandler,128); printf("RealTimeClock interrupt handler installed - Hit ESC to exit\n"); oldCount = count; while (1) { if (PM_kbhit() && (PM_getch() == 0x1B)) break; if (count != oldCount) { printf("Tick, Tock: %ld\n", count); oldCount = count; } } PM_restoreRealTimeClockHandler(); PM_restoreBreakHandler(); PM_unlockDataPages((void*)&count,sizeof(count),&lh); PM_unlockCodePages((__codePtr)RTCHandler,100,&lh); printf("RealTimeClock handler was called %ld times\n", count); return 0; }
int main(void) { int ch; PM_lockHandle lh; printf("Program running in "); switch (PM_getModeType()) { case PM_realMode: printf("real mode.\n\n"); break; case PM_286: printf("16 bit protected mode.\n\n"); break; case PM_386: printf("32 bit protected mode.\n\n"); break; } /* Install our timer handler and lock handler pages in memory. It is * difficult to get the size of a function in C, but we know our * function is well less than 100 bytes (and an entire 4k page will * need to be locked by the server anyway). */ PM_lockCodePages((__codePtr)keyHandler,100,&lh); PM_lockDataPages((void*)&count,sizeof(count),&lh); PM_installBreakHandler(); /* We *DONT* want Ctrl-Breaks! */ PM_setKeyHandler(keyHandler); printf("Keyboard interrupt handler installed - Type some characters and\n"); printf("hit ESC to exit\n"); while ((ch = PM_getch()) != 0x1B) { printf("%c", ch); fflush(stdout); } PM_restoreKeyHandler(); PM_restoreBreakHandler(); PM_unlockDataPages((void*)&count,sizeof(count),&lh); PM_unlockCodePages((__codePtr)keyHandler,100,&lh); printf("\n\nKeyboard handler was called %ld times\n", count); return 0; }
int main(void) { printf("Program running in "); switch (PM_getModeType()) { case PM_realMode: printf("real mode.\n\n"); break; case PM_286: printf("16 bit protected mode.\n\n"); break; case PM_386: printf("32 bit protected mode.\n\n"); break; } PM_installAltBreakHandler(breakHandler); printf("Control C/Break interrupt handler installed\n"); while (1) { if (ctrlCHit) { printf("Code termimated with Ctrl-C.\n"); break; } if (breakHit) { printf("Code termimated with Ctrl-Break.\n"); break; } if (PM_kbhit() && PM_getch() == 0x1B) { printf("No break code detected!\n"); break; } printf("Hit Ctrl-C or Ctrl-Break to exit!\n"); } PM_restoreBreakHandler(); return 0; }