/* TrapFrame的定义在include/x86/memory.h * 请仔细理解这段程序的含义,这些内容将在后续的实验中被反复使用。 */ void irq_handle(struct TrapFrame *tf) { if (tf->irq == 1000) { do_timer(); } else if (tf->irq == 1001) { uint32_t code = in_byte(0x60); uint32_t val = in_byte(0x61); out_byte(0x61, val | 0x80); out_byte(0x61, val); do_keyboard(code); } }
void GEM_PumpEvents(_THIS) { short mousex, mousey, mouseb, dummy; short kstate, prevkc, prevks; int i; SDL_keysym keysym; memset(gem_currentkeyboard,0,sizeof(gem_currentkeyboard)); prevkc = prevks = 0; for (;;) { int quit, resultat; short buffer[8], kc; quit = 0; resultat = evnt_multi( MU_MESAG|MU_TIMER|MU_KEYBD, 0,0,0, 0,0,0,0,0, 0,0,0,0,0, buffer, 10, &dummy,&dummy,&dummy,&kstate,&kc,&dummy ); /* Message event ? */ if (resultat & MU_MESAG) quit = do_messages(this, buffer); /* Keyboard event ? */ if (resultat & MU_KEYBD) { if ((prevkc != kc) || (prevks != kstate)) { do_keyboard(kc,kstate); } else { /* Avoid looping, if repeating same key */ break; } } /* Timer event ? */ if ((resultat & MU_TIMER) || quit) break; } /* Update mouse */ graf_mkstate(&mousex, &mousey, &mouseb, &kstate); do_mouse(this, mousex, mousey, mouseb, kstate); /* Now generate keyboard events */ for (i=0; i<ATARIBIOS_MAXKEYS; i++) { /* Key pressed ? */ if (gem_currentkeyboard[i] && !gem_previouskeyboard[i]) SDL_PrivateKeyboard(SDL_PRESSED, TranslateKey(i, gem_currentascii[i], &keysym)); /* Key unpressed ? */ if (gem_previouskeyboard[i] && !gem_currentkeyboard[i]) SDL_PrivateKeyboard(SDL_RELEASED, TranslateKey(i, gem_currentascii[i], &keysym)); } memcpy(gem_previouskeyboard,gem_currentkeyboard,sizeof(gem_previouskeyboard)); }