kopia lustrzana https://github.com/Jean-MarcHarvengt/MCUME
644 wiersze
15 KiB
C++
644 wiersze
15 KiB
C++
#include <string.h>
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#include "emuapi.h"
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#include "tft_t_dma.h"
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#include "dcastaway.h"
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#include "st.h"
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#include "mem.h"
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#include "m68k_intrf.h"
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#include "iopins.h"
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#include "psram_t.h"
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#ifdef PSRAM_CS
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PSRAM_T psram = PSRAM_T(PSRAM_CS, PSRAM_MOSI, PSRAM_SCLK, PSRAM_MISO);
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#endif
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#ifndef NO_SOUND
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#include "sound.h"
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#endif
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#include "tossw12.h"
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int8 *membase;
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int8 *membasemax;
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int8 *membase2;
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int8 *rombase;
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int hbl = 0;
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int end_visible_screen = 264;
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int hsync = 0;
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int vsyncpend = 0, hsyncpend = 0;
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int exmousex=160,exmousey=100,MouseRelease1=0,MouseRelease2=0;
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int CompleteSndBufIdx;
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int waitstate=0;
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int dcastaway_disc_writed[2] = { 0 , 0 };
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int dcastaway_disc_for_write[2] = { 0 , 0 };
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int draw_border=0, maybe_border=0;
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unsigned cyclenext=512;
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unsigned vid_adr_cycleyet=0;
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static unsigned char vid_cycles_pal[1024];
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static unsigned char vid_cycles_ntsc[1024];
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unsigned char *vid_cycle=(unsigned char *)&vid_cycles_pal;
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int readdsk=1;
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extern unsigned char fdc_motor;
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#define XRES 320
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#define YRES 200
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static unsigned short line[XRES];
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#define PALMULT8(x) ((x)<<5)
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#define RGBVAL16(r,g,b) ( (((r>>3)&0x1f)<<11) | (((g>>2)&0x3f)<<5) | (((b>>3)&0x1f)<<0) )
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void Redraw16 ( int row, int vid_adr ) {
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static unsigned short palmap [ 16 ];
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//Source address
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register unsigned short *line_i;
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if (vid_adr<(MEMBASE+MEM1SIZE))
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line_i = (unsigned short *)(&membase[vid_adr]);
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else
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line_i = (unsigned short *)(&membase2[vid_adr-MEM1SIZE]);
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register unsigned short *line_o= &line[0];
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//Build paletter
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if (vid_flag) {
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unsigned char i, r, g, b;
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for (i = 0; i < 16; i++) {
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b = PALMULT8 ( (vid_col[i] & 0x7) );
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g = PALMULT8 ( ((vid_col[i] >> 4) & 0x7) );
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r = PALMULT8 ( ((vid_col[i] >> 8) & 0x7) );
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palmap [ i ] = RGBVAL16(r,g,b);
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}
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vid_flag=0;
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}
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register int col;
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register int bit;
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for (col=0; col<20; col++) {
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if(line_i==membasemax) line_i=(unsigned short *)membase2;
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register unsigned short pl0=*line_i++,pl1=*line_i++,pl2=*line_i++,pl3=*line_i++;
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for (bit=15;bit>=0;bit--) {
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int ind = (pl0 >> bit) & 0x1;
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ind += ((pl1 >> bit) & 0x1)<<1;
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ind += ((pl2 >> bit) & 0x1)<<2;
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ind += ((pl3 >> bit) & 0x1)<<3;
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*line_o++ = palmap [ ind ];
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}
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}
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emu_DrawLine16(&line[0], XRES, YRES, row);
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}
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void Redraw16_med ( int row, int vid_adr ) {
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static unsigned short palmap [ 4 ];
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//Source address
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register unsigned short *line_i;
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if (vid_adr<(MEMBASE+MEM1SIZE))
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line_i = (unsigned short *)(&membase[vid_adr]);
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else
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line_i = (unsigned short *)(&membase2[vid_adr-MEM1SIZE]);
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register unsigned short *line_o= &line[0];
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//Build paletter
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if (vid_flag) {
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unsigned char i, r, g, b;
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for (i = 0; i < 4; i++) {
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b = PALMULT8 ( (vid_col[i] & 0x7) );
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g = PALMULT8 ( ((vid_col[i] >> 4) & 0x7) );
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r = PALMULT8 ( ((vid_col[i] >> 8) & 0x7) );
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palmap [ i ] = RGBVAL16(r,g,b);
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}
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//palmap [ 0 ] = RGBVAL16(0xff,0xff,0xff);
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vid_flag=0;
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}
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register int col;
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register int bit;
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for (col=0; col<40; col++) {
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if(line_i==membasemax) line_i=(unsigned short *)membase2;
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register unsigned short pl0=*line_i++,pl1=*line_i++;
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for (bit=15;bit>=0;bit--) {
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int ind = (pl0 >> bit) & 0x1;
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ind += ((pl1 >> bit) & 0x1)<<1;
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if (bit & 0x01)
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*line_o++ = palmap [ ind ];
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}
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}
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emu_DrawLine16(&line[0], XRES, YRES, row);
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}
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static uint8 disk0[256];
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static uint8 disk1[256];
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static uint8 membis[MEMSIZE-MEM1SIZE];
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void ast_Init(void)
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{
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emu_printf("Allocating RAM");
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membase = (int8*) malloc(MEM1SIZE);
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if (!membase) emu_printf("malloc failed\n");
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membasemax = &membase[MEM1SIZE];
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//Serial.println((unsigned long)membase);
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//membase = 0x20200000;
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for (int i=0; i<MEM1SIZE;i++)
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membase[i]=0;
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membase2 = (int8*)&membis[0];
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rombase = (int8*)&tos[0]-ROMBASE;
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(void) memcpy (membase, &tos[0], 8);
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extern unsigned char *disc[2];
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disc [ 0 ] = (uint8*) &disk0[0];
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disc [ 1 ] = (uint8*) &disk1[0];
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}
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static int mouse_x = XRES/2;
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static int mouse_y = 100;
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static int prev_key = 0;
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static int prev_j = 0;
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static int prev_mouseb = 0;
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static bool isMouse = true;
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static int joynum = 1;
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static int hk = 0;
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static int prev_hk = 0;
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static int k = 0;
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static int prev_k = 0;
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extern void ast_Input(int click) {
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hk = emu_ReadI2CKeyboard();
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k = emu_ReadKeys();
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}
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static void do_events(void)
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{
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int bClick = k & ~prev_k;
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prev_k = k;
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// Toggle mouse/joystick
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if (bClick & MASK_KEY_USER1) {
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if (isMouse) isMouse = false;
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else isMouse = true;
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}
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// Toggle keymap
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if (bClick & MASK_KEY_USER2) {
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emu_setKeymap(0);
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}
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if (hk != prev_hk) {
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prev_hk = hk;
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if ( (hk != 0) && (hk != prev_key) ) {
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prev_key = hk;
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IkbdKeyPress ( hk );
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//if (hk == 68) {
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// if (isMouse) isMouse = false;
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// else isMouse = true;
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//}
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//IkbdLoop();
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//Serial.print("press ");
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//Serial.println(hk);
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}
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}
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if ( (hk == 0) && (prev_key) ) {
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IkbdKeyRelease ( prev_key | 0x80 );
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//IkbdLoop();
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//Serial.print("release ");
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//Serial.println(hk);
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prev_key = 0;
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}
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if (!isMouse)
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{
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int j = 0;
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if (( k & MASK_JOY1_RIGHT) || ( k & MASK_JOY2_RIGHT)) {
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j |= 0x08;
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}
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if (( k & MASK_JOY1_LEFT) || ( k & MASK_JOY2_LEFT)) {
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j |= 0x04;
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}
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if (( k & MASK_JOY1_UP) || ( k & MASK_JOY2_UP)) {
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j |= 0x01;
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}
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if (( k & MASK_JOY1_DOWN) || ( k & MASK_JOY2_DOWN)) {
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j |= 0x02;
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}
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if ( k & MASK_JOY2_BTN) {
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j |= 0x80;
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}
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if (j != prev_j) {
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IkbdJoystickChange(joynum,j);
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prev_j = j;
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}
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}
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else {
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if (( k & MASK_JOY1_RIGHT) || ( k & MASK_JOY2_RIGHT)) {
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if ( mouse_x < XRES ) {
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mouse_x += 1;
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//Serial.print("r");
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IkbdMouseMotion ( mouse_x, mouse_y );
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IkbdLoop();
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}
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}
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else if (( k & MASK_JOY1_LEFT) || ( k & MASK_JOY2_LEFT)) {
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if ( mouse_x > 1 ) {
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mouse_x -= 1;
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//Serial.print("l");
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IkbdMouseMotion ( mouse_x, mouse_y );
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IkbdLoop();
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}
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}
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else if (( k & MASK_JOY1_UP) || ( k & MASK_JOY2_UP)) {
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if ( mouse_y > 1 ) {
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mouse_y -= 1;
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//Serial.print("u");
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IkbdMouseMotion ( mouse_x, mouse_y );
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IkbdLoop();
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}
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}
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else if (( k & MASK_JOY1_DOWN) || ( k & MASK_JOY2_DOWN)) {
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if ( mouse_y < YRES ) {
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mouse_y += 1;
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//Serial.print("d");
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IkbdMouseMotion ( mouse_x, mouse_y );
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IkbdLoop();
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}
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}
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int mouseb=0;
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if ( ( k & MASK_JOY2_BTN) ){
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mouseb=1;
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}
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if ( (mouseb != prev_mouseb) ){
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if (mouseb) IkbdMousePress(2);
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else IkbdMouseRelease(2);
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//Serial.println("btoggle");
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IkbdLoop();
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prev_mouseb = mouseb;
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}
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}
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}
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void ast_Step(void)
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{
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int delay_fdc_motor=0;
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unsigned long cycleco=0;
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unsigned long oldpend,newpend;
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hsync=0;
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hbl=0;
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vsyncpend=0;
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hsyncpend=0;
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int running = 1;
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/* Event loop */
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while (running)
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{
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cycleco=cpu_loop(cyclenext);
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cycleco+=waitstate;
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waitstate=0;
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#ifndef NO_SOUND
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SoundCycles+=cycleco;
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#endif
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//MFP timer A delay mode
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if (mfp_ascale>1) {
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mfp_acount-=mfp_ascale*cycleco;
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if (mfp_acount<=0) {
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do {mfp_acount+=mfp_tadr;} while (mfp_acount<=0);
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oldpend=mfp_ipra; newpend=(oldpend|0x20)&mfp_iera;
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if (newpend!=oldpend) {mfp_ipra=newpend;
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}
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}
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#ifdef USE_SHORT_SLICE
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cyclenext=4+(mfp_acount/mfp_ascale);
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#endif
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}
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#ifdef USE_SHORT_SLICE
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else
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cyclenext=512;
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#endif
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//MFP timer B delay mode
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if (mfp_bscale>1) {
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mfp_bcount-=mfp_bscale*cycleco;
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if (mfp_bcount<=0) {
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do {mfp_bcount+=mfp_tbdr;} while (mfp_bcount<=0);
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oldpend=mfp_ipra; newpend=(oldpend|0x1)&mfp_iera;
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if (newpend!=oldpend) {mfp_ipra=newpend;
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}
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}
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#ifdef USE_SHORT_SLICE
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{
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int n=4+(mfp_bcount/mfp_bscale);
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if (n<cyclenext)
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cyclenext=n;
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}
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#endif
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}
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//MFP timer C delay mode
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if (mfp_cscale>1) {
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mfp_ccount-=mfp_cscale*cycleco;
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if (mfp_ccount<=0) {
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do {mfp_ccount+=mfp_tcdr;} while (mfp_ccount<=0);
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oldpend=mfp_iprb; newpend=(oldpend|0x20)&mfp_ierb;
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if (newpend!=oldpend) {mfp_iprb=newpend;
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}
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}
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#ifdef USE_SHORT_SLICE
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{
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int n=4+(mfp_ccount/mfp_cscale);
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if (n<cyclenext)
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cyclenext=n;
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}
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#endif
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}
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//MFP timer D delay mode
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if (mfp_dscale>1) {
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mfp_dcount-=mfp_dscale*cycleco;
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if (mfp_dcount<=0) {
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do {mfp_dcount+=mfp_tddr;} while (mfp_dcount<=0);
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oldpend=mfp_iprb; newpend=(oldpend|0x10)&mfp_ierb;
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if (newpend!=oldpend) {mfp_iprb=newpend;
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}
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}
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#ifdef USE_SHORT_SLICE
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{
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int n=4+(mfp_dcount/mfp_dscale);
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if (n<cyclenext)
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cyclenext=n;
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}
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#endif
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}
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vid_adr+=(cycleco)&(~3);
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//Count hbls
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hsync-=cycleco;
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if (hsync<=0) {
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hbl++; hsync+=512;
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//Generate hbl interrupt
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Interrupt(AUTOINT2, 2);
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//Trigger event counters for visible scan-lines
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if (hbl<64) {
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vid_adr=(vid_baseh<<16)+(vid_basem<<8);
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}
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else if (hbl<264) {
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if ( (hbl == 132 )) {
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// if ( (hbl % (end_visible_screen/2) ) == 0) {
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//CPUEvent();
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//timer_tick = 1;
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}
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//Do IO every 64 hbls
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if (!(hbl&63)) {
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//Generate FDC interrupt in mfp?
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if (!(mfp_gpip & 0x20)) {
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mfp_iprb |= 0x80;
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mfp_iprb &= mfp_ierb;
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}
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//Generate ACIA interrupt in mfp?
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IkbdWriteBuffer();
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if (!(mfp_gpip & 0x10)) {
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mfp_iprb |= 0x40;
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mfp_iprb &= mfp_ierb;
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}
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}
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if (emu_FrameSkip() == 0 ) {
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//Update video address
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vid_adr=(vid_baseh<<16)+(vid_basem<<8)+(hbl-64)*160;
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//Draw screen line
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if (vid_shiftmode==COL2) {
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Redraw16_med ( hbl - 64, vid_adr );
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} else {
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Redraw16 ( hbl - 64, vid_adr );
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}
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}
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//Timer-A event count mode
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if (mfp_ascale==1) {
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mfp_acount-=1048576;
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if (mfp_acount<=0) {
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mfp_acount=mfp_tadr;
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oldpend=mfp_ipra; newpend=(oldpend|0x20)&mfp_iera;
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if (newpend!=oldpend) {mfp_ipra=newpend;
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}
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}
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}
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//Timer-B event count mode
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if (mfp_bscale==1) {
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mfp_bcount-=1048576;
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if (mfp_bcount<=0) {
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mfp_bcount=mfp_tbdr;
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oldpend=mfp_ipra; newpend=(oldpend|0x1)&mfp_iera;
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if (newpend!=oldpend) {mfp_ipra=newpend;
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}
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}
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}
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}
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//Vertical blank?
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else if (hbl>=313)
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{
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delay(15);
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//emu_DrawVsync();
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do_events();
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#ifndef NO_SOUND
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Sound_Update_VBL();
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#endif
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running=0;
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hbl=0;
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//Generate vsync interrupt
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Interrupt(AUTOINT4, 4);
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//Do fdc spinup
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if (fdc_motor){
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if (delay_fdc_motor>150) {
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fdc_status &= ~0x80;
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delay_fdc_motor=0;
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fdc_motor=0;
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}
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else delay_fdc_motor++;
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}
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}
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}
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//Recalculate interrupts?
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{
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int mfp_int;
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mfp_int=0;
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if (6>GetI()) {
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//Mfp interrupt
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{
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int n, number;
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uint16 imr, ipr, isr, irr;
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int in_request;
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//Find in_request and in_service
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imr = (mfp_imra<<8)+mfp_imrb;
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ipr = (mfp_ipra<<8)+mfp_iprb;
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irr = imr & ipr;
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isr = (mfp_isra<<8) + mfp_isrb;
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//in_request higher than in_service?
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if (irr>isr) {
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//Find highest set bit
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for (in_request = 15; in_request > 0; in_request--) {
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if (irr & 0x8000) break;
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irr <<= 1;
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}
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isr = 1 << in_request;
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//Set interrupt in service bits in MFP
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if (mfp_ivr & 0x8) {
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mfp_isra |= isr >> 8;
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mfp_isrb |= isr;
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}else{
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mfp_isra &= (~isr) >> 8;
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mfp_isrb &= ~isr;
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}
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//Clear interrupt pending bits in MFP
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mfp_ipra &= ~(isr >> 8);
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mfp_iprb &= ~isr;
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//Pass interrupt to cpu
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number = in_request | (mfp_ivr & 0xf0);
|
|
Interrupt(number, 6);
|
|
mfp_int=1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef PSRAM_CS
|
|
|
|
// disk IO mapped to PSRAM
|
|
|
|
extern "C" uint8 read_rom(int address) {
|
|
//emu_printh(address);
|
|
return (psram.psread(address));
|
|
}
|
|
|
|
extern "C" void write_rom(int address, uint8 val) {
|
|
psram.pswrite(address,val);
|
|
}
|
|
|
|
static int disksize = 0;
|
|
static int diskpt = 0;
|
|
|
|
int disk_Size(char * filename) {
|
|
//emu_printf("disk size");
|
|
//emu_printi(disksize);
|
|
return disksize;
|
|
}
|
|
|
|
int disk_Open(char * filename) {
|
|
//emu_printf("disk reset pt");
|
|
diskpt = 0;
|
|
return 1;
|
|
}
|
|
|
|
int disk_Read(char * buf, int size) {
|
|
//emu_printf("disk read");
|
|
//emu_printi(size);
|
|
int i = 0;
|
|
while ( ( i < size) && (diskpt < disksize) ) {
|
|
buf[i++] = read_rom(diskpt++);
|
|
}
|
|
return i;
|
|
}
|
|
|
|
int disk_Seek(int seek) {
|
|
//emu_printf("disk seek");
|
|
//emu_printi(seek);
|
|
diskpt = seek;
|
|
return diskpt;
|
|
}
|
|
|
|
#else
|
|
|
|
// disk IO mapped to File
|
|
|
|
int disk_Size(char * filename) {
|
|
return emu_FileSize(filename);
|
|
}
|
|
|
|
int disk_Open(char * filename) {
|
|
return emu_FileOpen(filename);
|
|
}
|
|
|
|
int disk_Read(char * buf, int size) {
|
|
return emu_FileRead(buf, size);
|
|
}
|
|
|
|
int disk_Seek(int seek) {
|
|
return emu_FileSeek(seek);
|
|
}
|
|
#endif
|
|
|
|
|
|
|
|
void ast_Start(char * filename)
|
|
{
|
|
emu_printf("init started");
|
|
strncpy (disk[0].name, filename, sizeof(disk[0].name));
|
|
|
|
#ifdef PSRAM_CS
|
|
char iobuf[512];
|
|
int iopos = 0;
|
|
disksize = 0;
|
|
int n;
|
|
|
|
psram.begin();
|
|
if (emu_FileOpen(filename)) {
|
|
while ( (n = emu_FileRead(&iobuf[0],sizeof(iobuf)) ) ) {
|
|
disksize += n;
|
|
for (int i=0; i<n; i++) {
|
|
write_rom(iopos++,iobuf[i]);
|
|
}
|
|
}
|
|
emu_FileClose();
|
|
}
|
|
emu_printf("psram loaded");
|
|
#endif
|
|
|
|
initialize_memmap();
|
|
FDCInit(0);
|
|
//FDCeject(0);
|
|
FDCeject(1);
|
|
IkbdReset();
|
|
IOInit();
|
|
#ifdef HAS_SND
|
|
emu_sndInit();
|
|
#endif
|
|
#ifndef NO_SOUND
|
|
Sound_Init();
|
|
#endif
|
|
HWReset(); /* CPU Reset */
|
|
|
|
emu_printf("init done");
|
|
}
|
|
|
|
void SND_Process(void *stream, int len) {
|
|
#ifndef NO_SOUND
|
|
Sound_UpdateFromCallBack16((short *)stream, len);
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
|