// Emacs style mode select -*- C++ -*- //----------------------------------------------------------------------------- // // Copyright(C) 1993-1996 Id Software, Inc. // Copyright(C) 1993-2008 Raven Software // Copyright(C) 2008 Simon Howard // // This program is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License // as published by the Free Software Foundation; either version 2 // of the License, or (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA // 02111-1307, USA. // //----------------------------------------------------------------------------- // I_IBM.C #include #include #include #include #include #include "doomdef.h" #include "r_local.h" #include "dmx.h" #include "v_video.h" // Macros #define DPMI_INT 0x31 //#define NOKBD //#define NOTIMER // Public Data int DisplayTicker = 0; // Code void main(int argc, char **argv) { myargc = argc; myargv = argv; D_DoomMain(); } void I_StartupNet(void); void I_ShutdownNet(void); void I_ReadExternDriver(void); typedef struct { unsigned edi, esi, ebp, reserved, ebx, edx, ecx, eax; unsigned short flags, es, ds, fs, gs, ip, cs, sp, ss; } dpmiregs_t; extern dpmiregs_t dpmiregs; void I_ReadMouse(void); void I_InitDiskFlash(void); extern int usemouse, usejoystick; extern void **lumpcache; /* ============================================================================= CONSTANTS ============================================================================= */ #define SC_INDEX 0x3C4 #define SC_RESET 0 #define SC_CLOCK 1 #define SC_MAPMASK 2 #define SC_CHARMAP 3 #define SC_MEMMODE 4 #define CRTC_INDEX 0x3D4 #define CRTC_H_TOTAL 0 #define CRTC_H_DISPEND 1 #define CRTC_H_BLANK 2 #define CRTC_H_ENDBLANK 3 #define CRTC_H_RETRACE 4 #define CRTC_H_ENDRETRACE 5 #define CRTC_V_TOTAL 6 #define CRTC_OVERFLOW 7 #define CRTC_ROWSCAN 8 #define CRTC_MAXSCANLINE 9 #define CRTC_CURSORSTART 10 #define CRTC_CURSOREND 11 #define CRTC_STARTHIGH 12 #define CRTC_STARTLOW 13 #define CRTC_CURSORHIGH 14 #define CRTC_CURSORLOW 15 #define CRTC_V_RETRACE 16 #define CRTC_V_ENDRETRACE 17 #define CRTC_V_DISPEND 18 #define CRTC_OFFSET 19 #define CRTC_UNDERLINE 20 #define CRTC_V_BLANK 21 #define CRTC_V_ENDBLANK 22 #define CRTC_MODE 23 #define CRTC_LINECOMPARE 24 #define GC_INDEX 0x3CE #define GC_SETRESET 0 #define GC_ENABLESETRESET 1 #define GC_COLORCOMPARE 2 #define GC_DATAROTATE 3 #define GC_READMAP 4 #define GC_MODE 5 #define GC_MISCELLANEOUS 6 #define GC_COLORDONTCARE 7 #define GC_BITMASK 8 #define ATR_INDEX 0x3c0 #define ATR_MODE 16 #define ATR_OVERSCAN 17 #define ATR_COLORPLANEENABLE 18 #define ATR_PELPAN 19 #define ATR_COLORSELECT 20 #define STATUS_REGISTER_1 0x3da #define PEL_WRITE_ADR 0x3c8 #define PEL_READ_ADR 0x3c7 #define PEL_DATA 0x3c9 #define PEL_MASK 0x3c6 boolean grmode; //================================================== // // joystick vars // //================================================== boolean joystickpresent; extern unsigned joystickx, joysticky; boolean I_ReadJoystick(void); // returns false if not connected //================================================== #define VBLCOUNTER 34000 // hardware tics to a frame #define TIMERINT 8 #define KEYBOARDINT 9 #define CRTCOFF (_inbyte(STATUS_REGISTER_1)&1) #define CLI _disable() #define STI _enable() #define _outbyte(x,y) (outp(x,y)) #define _outhword(x,y) (outpw(x,y)) #define _inbyte(x) (inp(x)) #define _inhword(x) (inpw(x)) #define MOUSEB1 1 #define MOUSEB2 2 #define MOUSEB3 4 boolean mousepresent; //static int tsm_ID = -1; // tsm init flag //=============================== int ticcount; // REGS stuff used for int calls union REGS regs; struct SREGS segregs; boolean novideo; // if true, stay in text mode for debugging #define KBDQUESIZE 32 byte keyboardque[KBDQUESIZE]; int kbdtail, kbdhead; #define KEY_LSHIFT 0xfe #define KEY_INS (0x80+0x52) #define KEY_DEL (0x80+0x53) #define KEY_PGUP (0x80+0x49) #define KEY_PGDN (0x80+0x51) #define KEY_HOME (0x80+0x47) #define KEY_END (0x80+0x4f) #define SC_RSHIFT 0x36 #define SC_LSHIFT 0x2a byte scantokey[128] = { // 0 1 2 3 4 5 6 7 // 8 9 A B C D E F 0, 27, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', KEY_BACKSPACE, 9, // 0 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', 13, KEY_RCTRL, 'a', 's', // 1 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', 39, '`', KEY_LSHIFT, 92, 'z', 'x', 'c', 'v', // 2 'b', 'n', 'm', ',', '.', '/', KEY_RSHIFT, '*', KEY_RALT, ' ', 0, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, // 3 KEY_F6, KEY_F7, KEY_F8, KEY_F9, KEY_F10, 0, 0, KEY_HOME, KEY_UPARROW, KEY_PGUP, '-', KEY_LEFTARROW, '5', KEY_RIGHTARROW, '+', KEY_END, //4 KEY_DOWNARROW, KEY_PGDN, KEY_INS, KEY_DEL, 0, 0, 0, KEY_F11, KEY_F12, 0, 0, 0, 0, 0, 0, 0, // 5 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 6 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 // 7 }; //========================================================================== //-------------------------------------------------------------------------- // // FUNC I_GetTime // // Returns time in 1/35th second tics. // //-------------------------------------------------------------------------- int I_GetTime(void) { #ifdef NOTIMER ticcount++; #endif return (ticcount); } //-------------------------------------------------------------------------- // // PROC I_ColorBorder // //-------------------------------------------------------------------------- void I_ColorBorder(void) { int i; I_WaitVBL(1); _outbyte(PEL_WRITE_ADR, 0); for (i = 0; i < 3; i++) { _outbyte(PEL_DATA, 63); } } //-------------------------------------------------------------------------- // // PROC I_UnColorBorder // //-------------------------------------------------------------------------- void I_UnColorBorder(void) { int i; I_WaitVBL(1); _outbyte(PEL_WRITE_ADR, 0); for (i = 0; i < 3; i++) { _outbyte(PEL_DATA, 0); } } /* ============================================================================ USER INPUT ============================================================================ */ //-------------------------------------------------------------------------- // // PROC I_WaitVBL // //-------------------------------------------------------------------------- void I_WaitVBL(int vbls) { int i; int old; int stat; if (novideo) { return; } while (vbls--) { do { stat = inp(STATUS_REGISTER_1); if (stat & 8) { break; } } while (1); do { stat = inp(STATUS_REGISTER_1); if ((stat & 8) == 0) { break; } } while (1); } } //-------------------------------------------------------------------------- // // PROC I_SetPalette // // Palette source must use 8 bit RGB elements. // //-------------------------------------------------------------------------- void I_SetPalette(byte * palette) { int i; if (novideo) { return; } I_WaitVBL(1); _outbyte(PEL_WRITE_ADR, 0); for (i = 0; i < 768; i++) { _outbyte(PEL_DATA, (gammatable[usegamma][*palette++]) >> 2); } } /* ============================================================================ GRAPHICS MODE ============================================================================ */ byte *pcscreen, *destscreen, *destview; /* ============== = = I_Update = ============== */ int UpdateState; extern int screenblocks; void I_Update(void) { int i; byte *dest; int tics; static int lasttic; // // blit screen to video // if (DisplayTicker) { if (screenblocks > 9 || UpdateState & (I_FULLSCRN | I_MESSAGES)) { dest = (byte *) screen; } else { dest = (byte *) pcscreen; } tics = ticcount - lasttic; lasttic = ticcount; if (tics > 20) { tics = 20; } for (i = 0; i < tics; i++) { *dest = 0xff; dest += 2; } for (i = tics; i < 20; i++) { *dest = 0x00; dest += 2; } } if (UpdateState == I_NOUPDATE) { return; } if (UpdateState & I_FULLSCRN) { memcpy(pcscreen, screen, SCREENWIDTH * SCREENHEIGHT); UpdateState = I_NOUPDATE; // clear out all draw types } if (UpdateState & I_FULLVIEW) { if (UpdateState & I_MESSAGES && screenblocks > 7) { for (i = 0; i < (viewwindowy + viewheight) * SCREENWIDTH; i += SCREENWIDTH) { memcpy(pcscreen + i, screen + i, SCREENWIDTH); } UpdateState &= ~(I_FULLVIEW | I_MESSAGES); } else { for (i = viewwindowy * SCREENWIDTH + viewwindowx; i < (viewwindowy + viewheight) * SCREENWIDTH; i += SCREENWIDTH) { memcpy(pcscreen + i, screen + i, viewwidth); } UpdateState &= ~I_FULLVIEW; } } if (UpdateState & I_STATBAR) { memcpy(pcscreen + SCREENWIDTH * (SCREENHEIGHT - SBARHEIGHT), screen + SCREENWIDTH * (SCREENHEIGHT - SBARHEIGHT), SCREENWIDTH * SBARHEIGHT); UpdateState &= ~I_STATBAR; } if (UpdateState & I_MESSAGES) { memcpy(pcscreen, screen, SCREENWIDTH * 28); UpdateState &= ~I_MESSAGES; } // memcpy(pcscreen, screen, SCREENHEIGHT*SCREENWIDTH); } //-------------------------------------------------------------------------- // // PROC I_InitGraphics // //-------------------------------------------------------------------------- void I_InitGraphics(void) { if (novideo) { return; } grmode = true; regs.w.ax = 0x13; int386(0x10, (const union REGS *) ®s, ®s); pcscreen = destscreen = (byte *) 0xa0000; I_SetPalette(W_CacheLumpName("PLAYPAL", PU_CACHE)); I_InitDiskFlash(); } //-------------------------------------------------------------------------- // // PROC I_ShutdownGraphics // //-------------------------------------------------------------------------- void I_ShutdownGraphics(void) { if (*(byte *) 0x449 == 0x13) // don't reset mode if it didn't get set { regs.w.ax = 3; int386(0x10, ®s, ®s); // back to text mode } } //-------------------------------------------------------------------------- // // PROC I_ReadScreen // // Reads the screen currently displayed into a linear buffer. // //-------------------------------------------------------------------------- void I_ReadScreen(byte * scr) { memcpy(scr, screen, SCREENWIDTH * SCREENHEIGHT); } //=========================================================================== /* =================== = = I_StartTic = // called by D_DoomLoop // called before processing each tic in a frame // can call D_PostEvent // asyncronous interrupt functions should maintain private ques that are // read by the syncronous functions to be converted into events =================== */ /* OLD STARTTIC STUFF void I_StartTic (void) { int k; event_t ev; I_ReadMouse (); // // keyboard events // while (kbdtail < kbdhead) { k = keyboardque[kbdtail&(KBDQUESIZE-1)]; // if (k==14) // I_Error ("exited"); kbdtail++; // extended keyboard shift key bullshit if ( (k&0x7f)==KEY_RSHIFT ) { if ( keyboardque[(kbdtail-2)&(KBDQUESIZE-1)]==0xe0 ) continue; k &= 0x80; k |= KEY_RSHIFT; } if (k==0xe0) continue; // special / pause keys if (keyboardque[(kbdtail-2)&(KBDQUESIZE-1)] == 0xe1) continue; // pause key bullshit if (k==0xc5 && keyboardque[(kbdtail-2)&(KBDQUESIZE-1)] == 0x9d) { ev.type = ev_keydown; ev.data1 = KEY_PAUSE; D_PostEvent (&ev); continue; } if (k&0x80) ev.type = ev_keyup; else ev.type = ev_keydown; k &= 0x7f; ev.data1 = k; //ev.data1 = scantokey[k]; D_PostEvent (&ev); } } */ #define SC_UPARROW 0x48 #define SC_DOWNARROW 0x50 #define SC_LEFTARROW 0x4b #define SC_RIGHTARROW 0x4d void I_StartTic(void) { int k; event_t ev; I_ReadMouse(); // // keyboard events // while (kbdtail < kbdhead) { k = keyboardque[kbdtail & (KBDQUESIZE - 1)]; kbdtail++; // extended keyboard shift key bullshit if ((k & 0x7f) == SC_LSHIFT || (k & 0x7f) == SC_RSHIFT) { if (keyboardque[(kbdtail - 2) & (KBDQUESIZE - 1)] == 0xe0) continue; k &= 0x80; k |= SC_RSHIFT; } if (k == 0xe0) continue; // special / pause keys if (keyboardque[(kbdtail - 2) & (KBDQUESIZE - 1)] == 0xe1) continue; // pause key bullshit if (k == 0xc5 && keyboardque[(kbdtail - 2) & (KBDQUESIZE - 1)] == 0x9d) { ev.type = ev_keydown; ev.data1 = KEY_PAUSE; D_PostEvent(&ev); continue; } if (k & 0x80) ev.type = ev_keyup; else ev.type = ev_keydown; k &= 0x7f; switch (k) { case SC_UPARROW: ev.data1 = KEY_UPARROW; break; case SC_DOWNARROW: ev.data1 = KEY_DOWNARROW; break; case SC_LEFTARROW: ev.data1 = KEY_LEFTARROW; break; case SC_RIGHTARROW: ev.data1 = KEY_RIGHTARROW; break; default: ev.data1 = scantokey[k]; break; } D_PostEvent(&ev); } } void I_ReadKeys(void) { int k; event_t ev; while (1) { while (kbdtail < kbdhead) { k = keyboardque[kbdtail & (KBDQUESIZE - 1)]; kbdtail++; printf("0x%x\n", k); if (k == 1) I_Quit(); } } } /* =============== = = I_StartFrame = =============== */ void I_StartFrame(void) { I_JoystickEvents(); I_ReadExternDriver(); } /* ============================================================================ TIMER INTERRUPT ============================================================================ */ void I_ColorBlack(int r, int g, int b) { _outbyte(PEL_WRITE_ADR, 0); _outbyte(PEL_DATA, r); _outbyte(PEL_DATA, g); _outbyte(PEL_DATA, b); } /* ================ = = I_TimerISR = ================ */ int I_TimerISR(void) { ticcount++; return 0; } /* ============================================================================ KEYBOARD ============================================================================ */ void (__interrupt __far * oldkeyboardisr) () = NULL; int lastpress; /* ================ = = I_KeyboardISR = ================ */ void __interrupt I_KeyboardISR(void) { // Get the scan code keyboardque[kbdhead & (KBDQUESIZE - 1)] = lastpress = _inbyte(0x60); kbdhead++; // acknowledge the interrupt _outbyte(0x20, 0x20); } /* =============== = = I_StartupKeyboard = =============== */ void I_StartupKeyboard(void) { #ifndef NOKBD oldkeyboardisr = _dos_getvect(KEYBOARDINT); _dos_setvect(0x8000 | KEYBOARDINT, I_KeyboardISR); #endif //I_ReadKeys (); } void I_ShutdownKeyboard(void) { if (oldkeyboardisr) _dos_setvect(KEYBOARDINT, oldkeyboardisr); *(short *) 0x41c = *(short *) 0x41a; // clear bios key buffer } /* ============================================================================ MOUSE ============================================================================ */ int I_ResetMouse(void) { regs.w.ax = 0; // reset int386(0x33, ®s, ®s); return regs.w.ax; } /* ================ = = StartupMouse = ================ */ void I_StartupCyberMan(void); void I_StartupMouse(void) { int (far * function) (); // // General mouse detection // mousepresent = 0; if (M_CheckParm("-nomouse") || !usemouse) return; if (I_ResetMouse() != 0xffff) { tprintf("Mouse: not present ", 0); return; } tprintf("Mouse: detected ", 0); mousepresent = 1; I_StartupCyberMan(); } /* ================ = = ShutdownMouse = ================ */ void I_ShutdownMouse(void) { if (!mousepresent) return; I_ResetMouse(); } /* ================ = = I_ReadMouse = ================ */ void I_ReadMouse(void) { event_t ev; // // mouse events // if (!mousepresent) return; ev.type = ev_mouse; memset(&dpmiregs, 0, sizeof(dpmiregs)); dpmiregs.eax = 3; // read buttons / position DPMIInt(0x33); ev.data1 = dpmiregs.ebx; dpmiregs.eax = 11; // read counters DPMIInt(0x33); ev.data2 = (short) dpmiregs.ecx; ev.data3 = -(short) dpmiregs.edx; D_PostEvent(&ev); } /* ============================================================================ JOYSTICK ============================================================================ */ int joyxl, joyxh, joyyl, joyyh; boolean WaitJoyButton(void) { int oldbuttons, buttons; oldbuttons = 0; do { I_WaitVBL(1); buttons = ((inp(0x201) >> 4) & 1) ^ 1; if (buttons != oldbuttons) { oldbuttons = buttons; continue; } if ((lastpress & 0x7f) == 1) { joystickpresent = false; return false; } } while (!buttons); do { I_WaitVBL(1); buttons = ((inp(0x201) >> 4) & 1) ^ 1; if (buttons != oldbuttons) { oldbuttons = buttons; continue; } if ((lastpress & 0x7f) == 1) { joystickpresent = false; return false; } } while (buttons); return true; } /* =============== = = I_StartupJoystick = =============== */ int basejoyx, basejoyy; void I_StartupJoystick(void) { int buttons; int count; int centerx, centery; joystickpresent = 0; if (M_CheckParm("-nojoy") || !usejoystick) return; if (!I_ReadJoystick()) { joystickpresent = false; tprintf("joystick not found ", 0); return; } printf("joystick found\n"); joystickpresent = true; printf("CENTER the joystick and press button 1:"); if (!WaitJoyButton()) return; I_ReadJoystick(); centerx = joystickx; centery = joysticky; printf ("\nPush the joystick to the UPPER LEFT corner and press button 1:"); if (!WaitJoyButton()) return; I_ReadJoystick(); joyxl = (centerx + joystickx) / 2; joyyl = (centerx + joysticky) / 2; printf ("\nPush the joystick to the LOWER RIGHT corner and press button 1:"); if (!WaitJoyButton()) return; I_ReadJoystick(); joyxh = (centerx + joystickx) / 2; joyyh = (centery + joysticky) / 2; printf("\n"); } /* =============== = = I_JoystickEvents = =============== */ void I_JoystickEvents(void) { event_t ev; // // joystick events // if (!joystickpresent) return; I_ReadJoystick(); ev.type = ev_joystick; ev.data1 = ((inp(0x201) >> 4) & 15) ^ 15; if (joystickx < joyxl) ev.data2 = -1; else if (joystickx > joyxh) ev.data2 = 1; else ev.data2 = 0; if (joysticky < joyyl) ev.data3 = -1; else if (joysticky > joyyh) ev.data3 = 1; else ev.data3 = 0; D_PostEvent(&ev); } /* ============================================================================ DPMI STUFF ============================================================================ */ #define REALSTACKSIZE 1024 dpmiregs_t dpmiregs; unsigned realstackseg; void I_DivException(void); int I_SetDivException(void); void DPMIFarCall(void) { segread(&segregs); regs.w.ax = 0x301; regs.w.bx = 0; regs.w.cx = 0; regs.x.edi = (unsigned) &dpmiregs; segregs.es = segregs.ds; int386x(DPMI_INT, ®s, ®s, &segregs); } void DPMIInt(int i) { dpmiregs.ss = realstackseg; dpmiregs.sp = REALSTACKSIZE - 4; segread(&segregs); regs.w.ax = 0x300; regs.w.bx = i; regs.w.cx = 0; regs.x.edi = (unsigned) &dpmiregs; segregs.es = segregs.ds; int386x(DPMI_INT, ®s, ®s, &segregs); } /* ============== = = I_StartupDPMI = ============== */ void I_StartupDPMI(void) { extern char __begtext; extern char ___argc; int n, d; // // allocate a decent stack for real mode ISRs // realstackseg = (int) I_AllocLow(1024) >> 4; // // lock the entire program down // // _dpmi_lockregion (&__begtext, &___argc - &__begtext); // // catch divide by 0 exception // #if 0 segread(&segregs); regs.w.ax = 0x0203; // DPMI set processor exception handler vector regs.w.bx = 0; // int 0 regs.w.cx = segregs.cs; regs.x.edx = (int) &I_DivException; printf("%x : %x\n", regs.w.cx, regs.x.edx); int386(DPMI_INT, ®s, ®s); #endif #if 0 n = I_SetDivException(); printf("return: %i\n", n); n = 100; d = 0; printf("100 / 0 = %i\n", n / d); exit(1); #endif } /* ============================================================================ TIMER INTERRUPT ============================================================================ */ void (__interrupt __far * oldtimerisr) (); void IO_ColorBlack(int r, int g, int b) { _outbyte(PEL_WRITE_ADR, 0); _outbyte(PEL_DATA, r); _outbyte(PEL_DATA, g); _outbyte(PEL_DATA, b); } /* ================ = = IO_TimerISR = ================ */ //void __interrupt IO_TimerISR (void) void __interrupt __far IO_TimerISR(void) { ticcount++; _outbyte(0x20, 0x20); // Ack the interrupt } /* ===================== = = IO_SetTimer0 = = Sets system timer 0 to the specified speed = ===================== */ void IO_SetTimer0(int speed) { if (speed > 0 && speed < 150) I_Error("INT_SetTimer0: %i is a bad value", speed); _outbyte(0x43, 0x36); // Change timer 0 _outbyte(0x40, speed); _outbyte(0x40, speed >> 8); } /* =============== = = IO_StartupTimer = =============== */ void IO_StartupTimer(void) { oldtimerisr = _dos_getvect(TIMERINT); _dos_setvect(0x8000 | TIMERINT, IO_TimerISR); IO_SetTimer0(VBLCOUNTER); } void IO_ShutdownTimer(void) { if (oldtimerisr) { IO_SetTimer0(0); // back to 18.4 ips _dos_setvect(TIMERINT, oldtimerisr); } } //=========================================================================== /* =============== = = I_Init = = hook interrupts and set graphics mode = =============== */ void I_Init(void) { extern void I_StartupTimer(void); novideo = M_CheckParm("novideo"); tprintf("I_StartupDPMI", 1); I_StartupDPMI(); tprintf("I_StartupMouse ", 1); I_StartupMouse(); // tprintf("I_StartupJoystick ",1); // I_StartupJoystick(); // tprintf("I_StartupKeyboard ",1); // I_StartupKeyboard(); } /* =============== = = I_Shutdown = = return to default system state = =============== */ void I_Shutdown(void) { I_ShutdownGraphics(); IO_ShutdownTimer(); S_ShutDown(); I_ShutdownMouse(); I_ShutdownKeyboard(); IO_SetTimer0(0); } /* ================ = = I_Error = ================ */ void I_Error(char *error, ...) { union REGS regs; va_list argptr; D_QuitNetGame(); I_Shutdown(); va_start(argptr, error); regs.x.eax = 0x3; int386(0x10, ®s, ®s); vprintf(error, argptr); va_end(argptr); printf("\n"); exit(1); } //-------------------------------------------------------------------------- // // I_Quit // // Shuts down net game, saves defaults, prints the exit text message, // goes to text mode, and exits. // //-------------------------------------------------------------------------- void I_Quit(void) { byte *scr; char *lumpName; int r; D_QuitNetGame(); M_SaveDefaults(); scr = (byte *) W_CacheLumpName("ENDTEXT", PU_CACHE); I_Shutdown(); memcpy((void *) 0xb8000, scr, 80 * 25 * 2); regs.w.ax = 0x0200; regs.h.bh = 0; regs.h.dl = 0; regs.h.dh = 23; int386(0x10, (const union REGS *) ®s, ®s); // Set text pos _settextposition(24, 1); exit(0); } /* =============== = = I_ZoneBase = =============== */ byte *I_ZoneBase(int *size) { int meminfo[32]; int heap; int i; int block; byte *ptr; memset(meminfo, 0, sizeof(meminfo)); segread(&segregs); segregs.es = segregs.ds; regs.w.ax = 0x500; // get memory info regs.x.edi = (int) &meminfo; int386x(0x31, ®s, ®s, &segregs); heap = meminfo[0]; printf("DPMI memory: 0x%x, ", heap); do { heap -= 0x10000; // leave 64k alone if (heap > 0x800000) heap = 0x800000; ptr = malloc(heap); } while (!ptr); printf("0x%x allocated for zone\n", heap); if (heap < 0x180000) I_Error("Insufficient DPMI memory!"); #if 0 regs.w.ax = 0x501; // allocate linear block regs.w.bx = heap >> 16; regs.w.cx = heap & 0xffff; int386(0x31, ®s, ®s); if (regs.w.cflag) I_Error("Couldn't allocate DPMI memory!"); block = (regs.w.si << 16) + regs.w.di; #endif *size = heap; return ptr; } /* ============================================================================= DISK ICON FLASHING ============================================================================= */ void I_InitDiskFlash(void) { #if 0 void *pic; byte *temp; pic = W_CacheLumpName("STDISK", PU_CACHE); temp = destscreen; destscreen = (byte *) 0xac000; V_DrawPatchDirect(SCREENWIDTH - 16, SCREENHEIGHT - 16, 0, pic); destscreen = temp; #endif } // draw disk icon void I_BeginRead(void) { #if 0 byte *src, *dest; int y; if (!grmode) return; // write through all planes outp(SC_INDEX, SC_MAPMASK); outp(SC_INDEX + 1, 15); // set write mode 1 outp(GC_INDEX, GC_MODE); outp(GC_INDEX + 1, inp(GC_INDEX + 1) | 1); // copy to backup src = currentscreen + 184 * 80 + 304 / 4; dest = (byte *) 0xac000 + 184 * 80 + 288 / 4; for (y = 0; y < 16; y++) { dest[0] = src[0]; dest[1] = src[1]; dest[2] = src[2]; dest[3] = src[3]; src += 80; dest += 80; } // copy disk over dest = currentscreen + 184 * 80 + 304 / 4; src = (byte *) 0xac000 + 184 * 80 + 304 / 4; for (y = 0; y < 16; y++) { dest[0] = src[0]; dest[1] = src[1]; dest[2] = src[2]; dest[3] = src[3]; src += 80; dest += 80; } // set write mode 0 outp(GC_INDEX, GC_MODE); outp(GC_INDEX + 1, inp(GC_INDEX + 1) & ~1); #endif } // erase disk icon void I_EndRead(void) { #if 0 byte *src, *dest; int y; if (!grmode) return; // write through all planes outp(SC_INDEX, SC_MAPMASK); outp(SC_INDEX + 1, 15); // set write mode 1 outp(GC_INDEX, GC_MODE); outp(GC_INDEX + 1, inp(GC_INDEX + 1) | 1); // copy disk over dest = currentscreen + 184 * 80 + 304 / 4; src = (byte *) 0xac000 + 184 * 80 + 288 / 4; for (y = 0; y < 16; y++) { dest[0] = src[0]; dest[1] = src[1]; dest[2] = src[2]; dest[3] = src[3]; src += 80; dest += 80; } // set write mode 0 outp(GC_INDEX, GC_MODE); outp(GC_INDEX + 1, inp(GC_INDEX + 1) & ~1); #endif } /* ============= = = I_AllocLow = ============= */ byte *I_AllocLow(int length) { byte *mem; // DPMI call 100h allocates DOS memory segread(&segregs); regs.w.ax = 0x0100; // DPMI allocate DOS memory regs.w.bx = (length + 15) / 16; int386(DPMI_INT, ®s, ®s); // segment = regs.w.ax; // selector = regs.w.dx; if (regs.w.cflag != 0) I_Error("I_AllocLow: DOS alloc of %i failed, %i free", length, regs.w.bx * 16); mem = (void *) ((regs.x.eax & 0xFFFF) << 4); memset(mem, 0, length); return mem; } /* ============================================================================ NETWORKING ============================================================================ */ /* // FUCKED LINES typedef struct { char priv[508]; } doomdata_t; */// FUCKED LINES #define DOOMCOM_ID 0x12345678l /* // FUCKED LINES typedef struct { long id; short intnum; // DOOM executes an int to execute commands // communication between DOOM and the driver short command; // CMD_SEND or CMD_GET short remotenode; // dest for send, set by get (-1 = no packet) short datalength; // bytes in doomdata to be sent // info common to all nodes short numnodes; // console is allways node 0 short ticdup; // 1 = no duplication, 2-5 = dup for slow nets short extratics; // 1 = send a backup tic in every packet short deathmatch; // 1 = deathmatch short savegame; // -1 = new game, 0-5 = load savegame short episode; // 1-3 short map; // 1-9 short skill; // 1-5 // info specific to this node short consoleplayer; short numplayers; short angleoffset; // 1 = left, 0 = center, -1 = right short drone; // 1 = drone // packet data to be sent doomdata_t data; } doomcom_t; */// FUCKED LINES extern doomcom_t *doomcom; /* ==================== = = I_InitNetwork = ==================== */ void I_InitNetwork(void) { int i; i = M_CheckParm("-net"); if (!i) { // // single player game // doomcom = malloc(sizeof(*doomcom)); memset(doomcom, 0, sizeof(*doomcom)); netgame = false; doomcom->id = DOOMCOM_ID; doomcom->numplayers = doomcom->numnodes = 1; doomcom->deathmatch = false; doomcom->consoleplayer = 0; doomcom->ticdup = 1; doomcom->extratics = 0; return; } netgame = true; doomcom = (doomcom_t *) atoi(myargv[i + 1]); //DEBUG doomcom->skill = startskill; doomcom->episode = startepisode; doomcom->map = startmap; doomcom->deathmatch = deathmatch; } void I_NetCmd(void) { if (!netgame) I_Error("I_NetCmd when not in netgame"); DPMIInt(doomcom->intnum); } int i_Vector; externdata_t *i_ExternData; boolean useexterndriver; //========================================================================= // // I_CheckExternDriver // // Checks to see if a vector, and an address for an external driver // have been passed. //========================================================================= void I_CheckExternDriver(void) { int i; if (!(i = M_CheckParm("-externdriver"))) { return; } i_ExternData = (externdata_t *) atoi(myargv[i + 1]); i_Vector = i_ExternData->vector; useexterndriver = true; } //========================================================================= // // I_ReadExternDriver // // calls the external interrupt, which should then update i_ExternDriver //========================================================================= void I_ReadExternDriver(void) { event_t ev; if (useexterndriver) { DPMIInt(i_Vector); } }