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sdl_main.c
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/* z81/xz81, Linux console and X ZX81/ZX80 emulators.
* Copyright (C) 1994 Ian Collier. z81 changes (C) 1995-2001 Russell Marks.
* sz81 Copyright (C) 2007-2011 Thunor <thunorsif@hotmail.com>
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* Includes */
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <SDL/SDL_main.h>
#include "sdl.h"
#include "common.h"
#include "sound.h"
#include "z80.h"
#include "allmain.h"
#ifdef __amigaos4__
#include "amiga.h"
#endif
/* Defines */
/* Variables */
//int hsize = DISPLAY_WIDTH, vsize = DISPLAY_HEIGHT;
unsigned char *vptr;
/* Function prototypes */
/***************************************************************************
* Update Screen *
***************************************************************************/
/* redraw the screen */
static const uint64_t lookup[] = {
0x0f0f0f0f0f0f0f0f,
0x000f0f0f0f0f0f0f,
0x0f000f0f0f0f0f0f,
0x00000f0f0f0f0f0f,
0x0f0f000f0f0f0f0f,
0x000f000f0f0f0f0f,
0x0f00000f0f0f0f0f,
0x0000000f0f0f0f0f,
0x0f0f0f000f0f0f0f,
0x000f0f000f0f0f0f,
0x0f000f000f0f0f0f,
0x00000f000f0f0f0f,
0x0f0f00000f0f0f0f,
0x000f00000f0f0f0f,
0x0f0000000f0f0f0f,
0x000000000f0f0f0f,
0x0f0f0f0f000f0f0f,
0x000f0f0f000f0f0f,
0x0f000f0f000f0f0f,
0x00000f0f000f0f0f,
0x0f0f000f000f0f0f,
0x000f000f000f0f0f,
0x0f00000f000f0f0f,
0x0000000f000f0f0f,
0x0f0f0f00000f0f0f,
0x000f0f00000f0f0f,
0x0f000f00000f0f0f,
0x00000f00000f0f0f,
0x0f0f0000000f0f0f,
0x000f0000000f0f0f,
0x0f000000000f0f0f,
0x00000000000f0f0f,
0x0f0f0f0f0f000f0f,
0x000f0f0f0f000f0f,
0x0f000f0f0f000f0f,
0x00000f0f0f000f0f,
0x0f0f000f0f000f0f,
0x000f000f0f000f0f,
0x0f00000f0f000f0f,
0x0000000f0f000f0f,
0x0f0f0f000f000f0f,
0x000f0f000f000f0f,
0x0f000f000f000f0f,
0x00000f000f000f0f,
0x0f0f00000f000f0f,
0x000f00000f000f0f,
0x0f0000000f000f0f,
0x000000000f000f0f,
0x0f0f0f0f00000f0f,
0x000f0f0f00000f0f,
0x0f000f0f00000f0f,
0x00000f0f00000f0f,
0x0f0f000f00000f0f,
0x000f000f00000f0f,
0x0f00000f00000f0f,
0x0000000f00000f0f,
0x0f0f0f0000000f0f,
0x000f0f0000000f0f,
0x0f000f0000000f0f,
0x00000f0000000f0f,
0x0f0f000000000f0f,
0x000f000000000f0f,
0x0f00000000000f0f,
0x0000000000000f0f,
0x0f0f0f0f0f0f000f,
0x000f0f0f0f0f000f,
0x0f000f0f0f0f000f,
0x00000f0f0f0f000f,
0x0f0f000f0f0f000f,
0x000f000f0f0f000f,
0x0f00000f0f0f000f,
0x0000000f0f0f000f,
0x0f0f0f000f0f000f,
0x000f0f000f0f000f,
0x0f000f000f0f000f,
0x00000f000f0f000f,
0x0f0f00000f0f000f,
0x000f00000f0f000f,
0x0f0000000f0f000f,
0x000000000f0f000f,
0x0f0f0f0f000f000f,
0x000f0f0f000f000f,
0x0f000f0f000f000f,
0x00000f0f000f000f,
0x0f0f000f000f000f,
0x000f000f000f000f,
0x0f00000f000f000f,
0x0000000f000f000f,
0x0f0f0f00000f000f,
0x000f0f00000f000f,
0x0f000f00000f000f,
0x00000f00000f000f,
0x0f0f0000000f000f,
0x000f0000000f000f,
0x0f000000000f000f,
0x00000000000f000f,
0x0f0f0f0f0f00000f,
0x000f0f0f0f00000f,
0x0f000f0f0f00000f,
0x00000f0f0f00000f,
0x0f0f000f0f00000f,
0x000f000f0f00000f,
0x0f00000f0f00000f,
0x0000000f0f00000f,
0x0f0f0f000f00000f,
0x000f0f000f00000f,
0x0f000f000f00000f,
0x00000f000f00000f,
0x0f0f00000f00000f,
0x000f00000f00000f,
0x0f0000000f00000f,
0x000000000f00000f,
0x0f0f0f0f0000000f,
0x000f0f0f0000000f,
0x0f000f0f0000000f,
0x00000f0f0000000f,
0x0f0f000f0000000f,
0x000f000f0000000f,
0x0f00000f0000000f,
0x0000000f0000000f,
0x0f0f0f000000000f,
0x000f0f000000000f,
0x0f000f000000000f,
0x00000f000000000f,
0x0f0f00000000000f,
0x000f00000000000f,
0x0f0000000000000f,
0x000000000000000f,
0x0f0f0f0f0f0f0f00,
0x000f0f0f0f0f0f00,
0x0f000f0f0f0f0f00,
0x00000f0f0f0f0f00,
0x0f0f000f0f0f0f00,
0x000f000f0f0f0f00,
0x0f00000f0f0f0f00,
0x0000000f0f0f0f00,
0x0f0f0f000f0f0f00,
0x000f0f000f0f0f00,
0x0f000f000f0f0f00,
0x00000f000f0f0f00,
0x0f0f00000f0f0f00,
0x000f00000f0f0f00,
0x0f0000000f0f0f00,
0x000000000f0f0f00,
0x0f0f0f0f000f0f00,
0x000f0f0f000f0f00,
0x0f000f0f000f0f00,
0x00000f0f000f0f00,
0x0f0f000f000f0f00,
0x000f000f000f0f00,
0x0f00000f000f0f00,
0x0000000f000f0f00,
0x0f0f0f00000f0f00,
0x000f0f00000f0f00,
0x0f000f00000f0f00,
0x00000f00000f0f00,
0x0f0f0000000f0f00,
0x000f0000000f0f00,
0x0f000000000f0f00,
0x00000000000f0f00,
0x0f0f0f0f0f000f00,
0x000f0f0f0f000f00,
0x0f000f0f0f000f00,
0x00000f0f0f000f00,
0x0f0f000f0f000f00,
0x000f000f0f000f00,
0x0f00000f0f000f00,
0x0000000f0f000f00,
0x0f0f0f000f000f00,
0x000f0f000f000f00,
0x0f000f000f000f00,
0x00000f000f000f00,
0x0f0f00000f000f00,
0x000f00000f000f00,
0x0f0000000f000f00,
0x000000000f000f00,
0x0f0f0f0f00000f00,
0x000f0f0f00000f00,
0x0f000f0f00000f00,
0x00000f0f00000f00,
0x0f0f000f00000f00,
0x000f000f00000f00,
0x0f00000f00000f00,
0x0000000f00000f00,
0x0f0f0f0000000f00,
0x000f0f0000000f00,
0x0f000f0000000f00,
0x00000f0000000f00,
0x0f0f000000000f00,
0x000f000000000f00,
0x0f00000000000f00,
0x0000000000000f00,
0x0f0f0f0f0f0f0000,
0x000f0f0f0f0f0000,
0x0f000f0f0f0f0000,
0x00000f0f0f0f0000,
0x0f0f000f0f0f0000,
0x000f000f0f0f0000,
0x0f00000f0f0f0000,
0x0000000f0f0f0000,
0x0f0f0f000f0f0000,
0x000f0f000f0f0000,
0x0f000f000f0f0000,
0x00000f000f0f0000,
0x0f0f00000f0f0000,
0x000f00000f0f0000,
0x0f0000000f0f0000,
0x000000000f0f0000,
0x0f0f0f0f000f0000,
0x000f0f0f000f0000,
0x0f000f0f000f0000,
0x00000f0f000f0000,
0x0f0f000f000f0000,
0x000f000f000f0000,
0x0f00000f000f0000,
0x0000000f000f0000,
0x0f0f0f00000f0000,
0x000f0f00000f0000,
0x0f000f00000f0000,
0x00000f00000f0000,
0x0f0f0000000f0000,
0x000f0000000f0000,
0x0f000000000f0000,
0x00000000000f0000,
0x0f0f0f0f0f000000,
0x000f0f0f0f000000,
0x0f000f0f0f000000,
0x00000f0f0f000000,
0x0f0f000f0f000000,
0x000f000f0f000000,
0x0f00000f0f000000,
0x0000000f0f000000,
0x0f0f0f000f000000,
0x000f0f000f000000,
0x0f000f000f000000,
0x00000f000f000000,
0x0f0f00000f000000,
0x000f00000f000000,
0x0f0000000f000000,
0x000000000f000000,
0x0f0f0f0f00000000,
0x000f0f0f00000000,
0x0f000f0f00000000,
0x00000f0f00000000,
0x0f0f000f00000000,
0x000f000f00000000,
0x0f00000f00000000,
0x0000000f00000000,
0x0f0f0f0000000000,
0x000f0f0000000000,
0x0f000f0000000000,
0x00000f0000000000,
0x0f0f000000000000,
0x000f000000000000,
0x0f00000000000000,
0x0000000000000000
};
static const uint64_t lookupv[] = {
0x0000000000000000,
0x0f00000000000000,
0x000f000000000000,
0x0f0f000000000000,
0x00000f0000000000,
0x0f000f0000000000,
0x000f0f0000000000,
0x0f0f0f0000000000,
0x0000000f00000000,
0x0f00000f00000000,
0x000f000f00000000,
0x0f0f000f00000000,
0x00000f0f00000000,
0x0f000f0f00000000,
0x000f0f0f00000000,
0x0f0f0f0f00000000,
0x000000000f000000,
0x0f0000000f000000,
0x000f00000f000000,
0x0f0f00000f000000,
0x00000f000f000000,
0x0f000f000f000000,
0x000f0f000f000000,
0x0f0f0f000f000000,
0x0000000f0f000000,
0x0f00000f0f000000,
0x000f000f0f000000,
0x0f0f000f0f000000,
0x00000f0f0f000000,
0x0f000f0f0f000000,
0x000f0f0f0f000000,
0x0f0f0f0f0f000000,
0x00000000000f0000,
0x0f000000000f0000,
0x000f0000000f0000,
0x0f0f0000000f0000,
0x00000f00000f0000,
0x0f000f00000f0000,
0x000f0f00000f0000,
0x0f0f0f00000f0000,
0x0000000f000f0000,
0x0f00000f000f0000,
0x000f000f000f0000,
0x0f0f000f000f0000,
0x00000f0f000f0000,
0x0f000f0f000f0000,
0x000f0f0f000f0000,
0x0f0f0f0f000f0000,
0x000000000f0f0000,
0x0f0000000f0f0000,
0x000f00000f0f0000,
0x0f0f00000f0f0000,
0x00000f000f0f0000,
0x0f000f000f0f0000,
0x000f0f000f0f0000,
0x0f0f0f000f0f0000,
0x0000000f0f0f0000,
0x0f00000f0f0f0000,
0x000f000f0f0f0000,
0x0f0f000f0f0f0000,
0x00000f0f0f0f0000,
0x0f000f0f0f0f0000,
0x000f0f0f0f0f0000,
0x0f0f0f0f0f0f0000,
0x0000000000000f00,
0x0f00000000000f00,
0x000f000000000f00,
0x0f0f000000000f00,
0x00000f0000000f00,
0x0f000f0000000f00,
0x000f0f0000000f00,
0x0f0f0f0000000f00,
0x0000000f00000f00,
0x0f00000f00000f00,
0x000f000f00000f00,
0x0f0f000f00000f00,
0x00000f0f00000f00,
0x0f000f0f00000f00,
0x000f0f0f00000f00,
0x0f0f0f0f00000f00,
0x000000000f000f00,
0x0f0000000f000f00,
0x000f00000f000f00,
0x0f0f00000f000f00,
0x00000f000f000f00,
0x0f000f000f000f00,
0x000f0f000f000f00,
0x0f0f0f000f000f00,
0x0000000f0f000f00,
0x0f00000f0f000f00,
0x000f000f0f000f00,
0x0f0f000f0f000f00,
0x00000f0f0f000f00,
0x0f000f0f0f000f00,
0x000f0f0f0f000f00,
0x0f0f0f0f0f000f00,
0x00000000000f0f00,
0x0f000000000f0f00,
0x000f0000000f0f00,
0x0f0f0000000f0f00,
0x00000f00000f0f00,
0x0f000f00000f0f00,
0x000f0f00000f0f00,
0x0f0f0f00000f0f00,
0x0000000f000f0f00,
0x0f00000f000f0f00,
0x000f000f000f0f00,
0x0f0f000f000f0f00,
0x00000f0f000f0f00,
0x0f000f0f000f0f00,
0x000f0f0f000f0f00,
0x0f0f0f0f000f0f00,
0x000000000f0f0f00,
0x0f0000000f0f0f00,
0x000f00000f0f0f00,
0x0f0f00000f0f0f00,
0x00000f000f0f0f00,
0x0f000f000f0f0f00,
0x000f0f000f0f0f00,
0x0f0f0f000f0f0f00,
0x0000000f0f0f0f00,
0x0f00000f0f0f0f00,
0x000f000f0f0f0f00,
0x0f0f000f0f0f0f00,
0x00000f0f0f0f0f00,
0x0f000f0f0f0f0f00,
0x000f0f0f0f0f0f00,
0x0f0f0f0f0f0f0f00,
0x000000000000000f,
0x0f0000000000000f,
0x000f00000000000f,
0x0f0f00000000000f,
0x00000f000000000f,
0x0f000f000000000f,
0x000f0f000000000f,
0x0f0f0f000000000f,
0x0000000f0000000f,
0x0f00000f0000000f,
0x000f000f0000000f,
0x0f0f000f0000000f,
0x00000f0f0000000f,
0x0f000f0f0000000f,
0x000f0f0f0000000f,
0x0f0f0f0f0000000f,
0x000000000f00000f,
0x0f0000000f00000f,
0x000f00000f00000f,
0x0f0f00000f00000f,
0x00000f000f00000f,
0x0f000f000f00000f,
0x000f0f000f00000f,
0x0f0f0f000f00000f,
0x0000000f0f00000f,
0x0f00000f0f00000f,
0x000f000f0f00000f,
0x0f0f000f0f00000f,
0x00000f0f0f00000f,
0x0f000f0f0f00000f,
0x000f0f0f0f00000f,
0x0f0f0f0f0f00000f,
0x00000000000f000f,
0x0f000000000f000f,
0x000f0000000f000f,
0x0f0f0000000f000f,
0x00000f00000f000f,
0x0f000f00000f000f,
0x000f0f00000f000f,
0x0f0f0f00000f000f,
0x0000000f000f000f,
0x0f00000f000f000f,
0x000f000f000f000f,
0x0f0f000f000f000f,
0x00000f0f000f000f,
0x0f000f0f000f000f,
0x000f0f0f000f000f,
0x0f0f0f0f000f000f,
0x000000000f0f000f,
0x0f0000000f0f000f,
0x000f00000f0f000f,
0x0f0f00000f0f000f,
0x00000f000f0f000f,
0x0f000f000f0f000f,
0x000f0f000f0f000f,
0x0f0f0f000f0f000f,
0x0000000f0f0f000f,
0x0f00000f0f0f000f,
0x000f000f0f0f000f,
0x0f0f000f0f0f000f,
0x00000f0f0f0f000f,
0x0f000f0f0f0f000f,
0x000f0f0f0f0f000f,
0x0f0f0f0f0f0f000f,
0x0000000000000f0f,
0x0f00000000000f0f,
0x000f000000000f0f,
0x0f0f000000000f0f,
0x00000f0000000f0f,
0x0f000f0000000f0f,
0x000f0f0000000f0f,
0x0f0f0f0000000f0f,
0x0000000f00000f0f,
0x0f00000f00000f0f,
0x000f000f00000f0f,
0x0f0f000f00000f0f,
0x00000f0f00000f0f,
0x0f000f0f00000f0f,
0x000f0f0f00000f0f,
0x0f0f0f0f00000f0f,
0x000000000f000f0f,
0x0f0000000f000f0f,
0x000f00000f000f0f,
0x0f0f00000f000f0f,
0x00000f000f000f0f,
0x0f000f000f000f0f,
0x000f0f000f000f0f,
0x0f0f0f000f000f0f,
0x0000000f0f000f0f,
0x0f00000f0f000f0f,
0x000f000f0f000f0f,
0x0f0f000f0f000f0f,
0x00000f0f0f000f0f,
0x0f000f0f0f000f0f,
0x000f0f0f0f000f0f,
0x0f0f0f0f0f000f0f,
0x00000000000f0f0f,
0x0f000000000f0f0f,
0x000f0000000f0f0f,
0x0f0f0000000f0f0f,
0x00000f00000f0f0f,
0x0f000f00000f0f0f,
0x000f0f00000f0f0f,
0x0f0f0f00000f0f0f,
0x0000000f000f0f0f,
0x0f00000f000f0f0f,
0x000f000f000f0f0f,
0x0f0f000f000f0f0f,
0x00000f0f000f0f0f,
0x0f000f0f000f0f0f,
0x000f0f0f000f0f0f,
0x0f0f0f0f000f0f0f,
0x000000000f0f0f0f,
0x0f0000000f0f0f0f,
0x000f00000f0f0f0f,
0x0f0f00000f0f0f0f,
0x00000f000f0f0f0f,
0x0f000f000f0f0f0f,
0x000f0f000f0f0f0f,
0x0f0f0f000f0f0f0f,
0x0000000f0f0f0f0f,
0x0f00000f0f0f0f0f,
0x000f000f0f0f0f0f,
0x0f0f000f0f0f0f0f,
0x00000f0f0f0f0f0f,
0x0f000f0f0f0f0f0f,
0x000f0f0f0f0f0f0f,
0x0f0f0f0f0f0f0f0f
};
void update_scrn(void) {
int x, y;
unsigned char* ptr = scrnbmp;
if (!chromamode)
{
uint64_t* v64ptr = (uint64_t*)vptr;
if (sdl_emulator.invert)
{
for (y = 0; y < disp.height; y++)
{
for (x = 0; x < disp.width; x += 8)
{
*v64ptr++ = lookupv[*ptr++];
}
ptr += disp.padding;
}
}
else
{
for (y = 0; y < disp.height; y++)
{
for (x = 0; x < disp.width; x += 8)
{
*v64ptr++ = lookup[*ptr++];
}
ptr += disp.padding;
}
}
}
else
{
unsigned char* cptr = scrnbmpc;
uint8_t* vcptr = vptr;
unsigned char d, dc;
int a, mask;
// Ignore invert in chroma mode
for (y = 0; y < disp.height; y++)
{
for (x = 0; x < disp.width; x += 8)
{
d = *ptr++;
dc = *cptr++;
for (a = 0, mask = 0x80; a < 8; a++, mask >>= 1)
{
*vcptr++ = ((d & mask) ? (dc & 0x0f) : ((dc & 0xf0) >> 4));
}
}
ptr += disp.padding;
cptr += disp.padding;
}
}
refresh_screen = 0;
sdl_video_update();
}
/***************************************************************************
* Check Events *
***************************************************************************/
/* read keyboard and update keyports[] */
void check_events(void) {
int b, y;
keyboard_update();
/* ugly, but there's no pleasant way to do this */
if (sdl_emulator.state && !sdl_emulator.paused) {
for (y = 0; y < 8; y++) { /* 8 half-rows */
b = 0; /* we set bits in b as appropriate */
switch (y) { /* below comments given in order b1->b5 */
/* left-hand side */
case 0: /* sft,z,x,c,v */
if (keyboard_buffer[SDLK_LSHIFT] ||
keyboard_buffer[SDLK_RSHIFT] ||
keyboard_buffer[SDLK_LCTRL] ||
keyboard_buffer[SDLK_RCTRL])
b |= 1;
if (keyboard_buffer[SDLK_z]) b |= 2;
if (keyboard_buffer[SDLK_x]) b |= 4;
if (keyboard_buffer[SDLK_c]) b |= 8;
if (keyboard_buffer[SDLK_v]) b |= 16;
break;
case 1: /* a,s,d,f,g */
if (keyboard_buffer[SDLK_a]) b |= 1;
if (keyboard_buffer[SDLK_s]) b |= 2;
if (keyboard_buffer[SDLK_d]) b |= 4;
if (keyboard_buffer[SDLK_f]) b |= 8;
if (keyboard_buffer[SDLK_g]) b |= 16;
break;
case 2: /* q,w,e,r,t */
if (keyboard_buffer[SDLK_q]) b |= 1;
if (keyboard_buffer[SDLK_w]) b |= 2;
if (keyboard_buffer[SDLK_e]) b |= 4;
if (keyboard_buffer[SDLK_r]) b |= 8;
if (keyboard_buffer[SDLK_t]) b |= 16;
break;
case 3: /* 1,2,3,4,5 */
if (keyboard_buffer[SDLK_1]) b |= 1;
if (keyboard_buffer[SDLK_2]) b |= 2;
if (keyboard_buffer[SDLK_3]) b |= 4;
if (keyboard_buffer[SDLK_4]) b |= 8;
if (keyboard_buffer[SDLK_5]) b |= 16;
break;
/* right-hand side */
case 4: /* 0,9,8,7,6 */
if (keyboard_buffer[SDLK_0]) b |= 1;
if (keyboard_buffer[SDLK_9]) b |= 2;
if (keyboard_buffer[SDLK_8]) b |= 4;
if (keyboard_buffer[SDLK_7]) b |= 8;
if (keyboard_buffer[SDLK_6]) b |= 16;
break;
case 5: /* p,o,i,u,y */
if (keyboard_buffer[SDLK_p]) b |= 1;
if (keyboard_buffer[SDLK_o]) b |= 2;
if (keyboard_buffer[SDLK_i]) b |= 4;
if (keyboard_buffer[SDLK_u]) b |= 8;
if (keyboard_buffer[SDLK_y]) b |= 16;
break;
case 6: /* ent,l,k,j,h */
if (keyboard_buffer[SDLK_RETURN]) b |= 1;
if (keyboard_buffer[SDLK_l]) b |= 2;
if (keyboard_buffer[SDLK_k]) b |= 4;
if (keyboard_buffer[SDLK_j]) b |= 8;
if (keyboard_buffer[SDLK_h]) b |= 16;
break;
case 7: /* spc,dot,m,n,b */
if (keyboard_buffer[SDLK_SPACE]) b |= 1;
if (keyboard_buffer[SDLK_PERIOD]) b |= 2;
if (keyboard_buffer[SDLK_m]) b |= 4;
if (keyboard_buffer[SDLK_n]) b |= 8;
if (keyboard_buffer[SDLK_b]) b |= 16;
break;
}
/* some things need top bits to be 1 */
keyports[y] = ((b ^ 31) | 0xe0);
}
}
}
/***************************************************************************
* Main *
***************************************************************************/
/* Originally z81 was set-up via the command-line interface (CLI) and
* sz81 managed what it could around z81, but now sz81 is going to
* manage everything and therefore needs to initialise first */
#ifdef __cplusplus
extern "C"
#endif
#ifdef PLATFORM_RISCOS
char riscos_prog_dir[256];
#endif
int main(int argc, char *argv[]) {
int retval = 0;
#ifdef __amigaos4__
amiga_open_libs();
#endif
#ifdef PLATFORM_RISCOS
if (argc)
{
strcpy(riscos_prog_dir, argv[0]);
char* p = strrchr(riscos_prog_dir,'/');
if (p) *(p)=0;
chdir(riscos_prog_dir);
#ifdef DEBUG_LOAD_SAVE
fprintf(stderr, "Set cwd %s\n", riscos_prog_dir);
#endif
}
#endif
/* Initialise sz81 variables, SDL, WM icon, local data dir */
retval = sdl_init();
if (!retval) {
/* sz81 supports just the necessary options via the CLI, such
* as an initial video resolution and window/fullscreen */
retval = sdl_com_line_process(argc, argv);
if (!retval) {
/* I personally like to dump this about here so that if
* something goes wrong then it's clear to the user where
* everything is supposed to be */
fprintf(stdout, "PACKAGE_DATA_DIR is %s\n", PACKAGE_DATA_DIR);
/* Initialise display storage */
initdisplay();
/* Set the video mode, set-up component screen offsets,
* initialise fonts, icons, vkeyb and control bar */
retval = sdl_video_setmode();
if (!retval) {
/* This is a reminder that sz81 is still emulating
* the SVGAlib API ;) */
vptr = vga_getgraphmem();
/* Initialise the keyboard buffer, open a joystick
* and set-up control remappings */
sdl_keyboard_init();
/* Read the project's rcfile if it exists and update
* variables that are defined within it */
sdl_rcfile_read();
/* Initialise the hotspots now (this will set the
* default initial vkeyb hotspot for the model) */
sdl_hotspots_init();
/* Load both the ZX80 and ZX81 ROMs */
sdl_zxroms_init();
/* Initialise the emulator timer */
sdl_timer_init();
/* Synchronise */
sdl_component_executive();
while (interrupted != INTERRUPT_EMULATOR_EXIT) {
interrupted = 0;
/* Update display offset */
setDisplayBoundaries();
/* Initialise the printer file */
sdl_zxprinter_init();
/* Initialise the required ROM and RAM */
initmem();
#ifdef OSS_SOUND_SUPPORT
/* z81 has a variable 'sound' that is set to true
* if the user requests sound else false. At this
* point if 'sound' is true then the sound system is
* initialised which should result in sound_enabled=1.
* Henceforth the 'sound' variable is ignored and
* sound_enabled is used to check the sound state */
if (sound) sound_init();
#endif
/* And off we go... */
/* printf("%s: Entering mainloop, autoload=%i\n",
__func__, sdl_emulator.autoload); temp temp */
mainloop();
#ifdef OSS_SOUND_SUPPORT
/* If sound_enabled=1 then sound is operational */
if (sound_enabled) {
sound_end();
sound_reset();
}
#endif
/* Close any open printer file */
zxpclose();
/* Reinitialise variables at the top of z80.c */
z80_reset();
/* Reinitialise variables at the top of common.c */
common_reset();
}
}
}
}
/* clean_up_before_exit will tidy up here before returning to the
* OS (it was registered earlier with atexit within sdl_init) */
return retval;
}