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activegs-ios
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activegs-ios/kegs/Src/sim65816.cpp

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/*
ActiveGS, Copyright 2004-2016 Olivier Goguel, https://github.com/ogoguel/ActiveGS
Based on Kegs, Copyright 2004 Kent Dickey, https://kegs.sourceforge.net
This code is covered by the GNU GPL licence
*/
#ifdef _WIN32
# define _WINSOCKAPI_
#endif
#undef printf
#include <math.h>
#define INCLUDE_RCSID_C
#include "defc.h"
#undef INCLUDE_RCSID_C
#include "raster.h"
#include "protos_engine_c.h"
#include "driver.h"
// 2.6 = 60
// 2.49 = 63
// 2.45 = 64
// 2.43 = 64
// 2.41 = 65! ***
#define DEFAULT_GS_SPEED 2.5 //(2.41*(2.8/2.322))
#include "moremem.h"
#include "sim65816.h"
#include "iwm.h"
#include "config.h"
#include "sound.h"
#include "video.h"
#include "SaveState.h"
#include "graphcounter.h"
#include "marinetti.h"
s_sim65816 g_sim65816;
run_sim65816 r_sim65816;
void run_sim65816::set_state(int _newstate)
{
int s = _newstate ;
printf("state changed from %d to %d\n",r_sim65816.emulator_state,s);
emulator_state = s;
}
int run_sim65816::get_state()
{
return emulator_state;
}
void run_sim65816::set_rewind_enable(int _onoff)
{
g_savestate_enable = _onoff;
}
//OG for regular exit, use quitEmulator()
void run_sim65816::quit_emulator()
{
printf("*** quit_emulator ***\n");
quit_requested = 1;
}
void run_sim65816::restart_emulator()
{
printf("*** quit_emulator ***\n");
restart_requested = 1;
}
void run_sim65816::reset_quit()
{
printf("*** reset_quit ***\n");
quit_requested = 0;
}
void run_sim65816::reset_restart()
{
printf("*** reset_restart ***\n");
restart_requested = 0;
}
int run_sim65816::should_emulator_terminate()
{
return (quit_requested || restart_requested);
}
int run_sim65816::is_emulator_offscreen_available()
{
return ( emulator_state & OFFSCREEN_AVAILABLE );
}
int run_sim65816::is_emulator_in_640mode()
{
return g_video.g_a2_line_kimage[0]==&s_video.g_kimage_superhires && (g_slow_memory_ptr[0x19d00]&0x80) ;
}
void refresh_offscreen()
{
printf("*** forcing offscreen refresh! ***\n");
// recalcul la palette
r_sim65816.check_update_emulator_runtime_config();
// reg<65>n<EFBFBD>re l'<27>cran
g_video.g_screen_redraw_skip_count = 0; // pour forcer le refresh ind<6E>pendamment du frame rate effectif
video_update();
// force son rafraichissemnt
// OG NE PAS FAIRE LE REFRESH ICI CAR ON NE SAIT PAS D'OU VIENT LA DEMANDE!!!
// refresh_video(1);
}
void run_sim65816::set_color_mode(colormodeenum _cm)
{
color_mode = _cm;
printf("color_mode set to %d\n",_cm);
g_video.g_needfullrefreshfornextframe = 1 ;
request_update_emulator_runtime_config();
if (r_sim65816.get_state()==IN_PAUSE)
refresh_offscreen();
}
void run_sim65816::set_video_fx(videofxenum _vfx)
{
video_fx = _vfx;
g_video.g_needfullrefreshfornextframe = 1 ;
printf("video fx set to %d\n",_vfx);
#ifdef DRIVER_IOS
{
extern void x_set_video_fx(videofxenum _vfx);
x_set_video_fx(_vfx);
}
#endif
}
int run_sim65816::is_emulator_initialized()
{
int s = r_sim65816.get_state();
return (s==RUNNING) || (s==IN_PAUSE);
}
void run_sim65816::request_update_emulator_runtime_config()
{
emulator_config_requested=1;
}
void run_sim65816::check_update_emulator_runtime_config()
{
if (!emulator_config_requested)
return ;
emulator_config_requested=0;
extern void video_update_palette_color();
if (color_mode == COLORMODE_BW)
g_video.g_cur_a2_stat |= ALL_STAT_COLOR_C021;
else
g_video.g_cur_a2_stat &= ~ALL_STAT_COLOR_C021;
// recalcul les palettes
video_update_palette_color();
for(int i=0;i<200;i++)
for(int j=0;j<8;j++)
s_video.g_saved_line_palettes[i][j] = -1;
// remets <20> jour les borders (cf. change_border_color)
g_video.g_border_last_vbl_changes = 1;
for(int i=0;i<270;i++)
g_video.g_cur_border_colors[i] = -1;
// invalide la m<>moire
for(int i = 0;i<SLOW_MEM_CH_SIZE;i++)
s_video.slow_mem_changed[i] = -1;
// Disable GS Detection in pure 6502 mode
extern byte *g_rom_fc_ff_ptr;
if (g_rom_fc_ff_ptr && g_sim65816.g_rom_version == 1)
{
// replace LDA FB55 par LDA C044
g_rom_fc_ff_ptr[0x03fe20]=0x44;
g_rom_fc_ff_ptr[0x03fe21]=0xC0;
if (g_sim65816.g_6502_emulation)
g_rom_fc_ff_ptr[0x03fe28]=0x38; // SEC
else
g_rom_fc_ff_ptr[0x03fe28]=0x18; // CLC
}
g_video.g_needfullrefreshfornextframe = 1;
}
int run_sim65816::pause()
{
if (get_state() == RUNNING)
{
set_state(PAUSE_REQUESTED);
return 1;
}
else
if (get_state() == PAUSE_REQUESTED)
printf("pause already requested");
else
printf("cannot pause\n'");
return 0;
}
int run_sim65816::resume()
{
if (get_state() == IN_PAUSE || get_state() == PAUSE_REQUESTED)
{
set_state(RUNNING);
return 1;
}
printf("cannot resume\n'");
return 0;
}
int Verbose=0;
#ifdef UNDER_CE
#define vsnprintf _vsnprintf
#endif
#define PC_LOG_LEN (8*1024)
char g_argv0_path[256] = "./";
const char *g_kegs_default_paths[] = { "", "./", "${HOME}/",
"${HOME}/Library/KEGS/",
"${0}/Contents/Resources/", "/usr/local/lib/",
"/usr/local/kegs/", "/usr/local/lib/kegs/", "/usr/share/kegs/",
"/var/lib/", "/usr/lib/kegs/", "${0}/", 0 };
//#define EV_DELAY_WRITE_C023 8
extern int g_stepping;
//extern int g_cur_a2_stat;
extern int g_engine_c_mode;
extern int defs_instr_start_8;
extern int defs_instr_start_16;
extern int defs_instr_end_8;
extern int defs_instr_end_16;
extern int op_routs_start;
extern int op_routs_end;
void U_STACK_TRACE();
extern word32 g_cycs_in_sound1;
extern word32 g_cycs_in_sound2;
extern word32 g_cycs_in_sound3;
extern word32 g_cycs_in_sound4;
extern word32 g_cycs_in_start_sound;
extern word32 g_cycs_in_est_sound;
extern word32 g_refresh_bytes_xfer;
extern int g_num_snd_plays;
extern int g_num_doc_events;
extern int g_num_start_sounds;
extern int g_num_scan_osc;
extern int g_num_recalc_snd_parms;
extern float g_fvoices;
//extern int g_status_refresh_needed;
// OG Missing defined below
//extern int g_screen_depth ;
//extern int g_screen_redraw_skip_amt;
#ifdef DRIVER_LINUX
int g_use_shmem = 0;
#endif
//extern int g_use_dhr140;
//extern int g_use_bw_hires;
#include "kegsversion.h"
#define MAX_FATAL_LOGS 20
byte *g_slow_memory_ptr = 0;
byte *g_memory_ptr = 0;
byte *g_dummy_memory1_ptr = 0;
byte *g_rom_fc_ff_ptr = 0;
byte *g_rom_cards_ptr = 0;
// OG Added allocated pointers
byte *g_slow_memory_ptr_allocated = 0;
byte *g_memory_ptr_allocated = 0;
byte *g_dummy_memory1_ptr_allocated = 0;
byte *g_rom_fc_ff_ptr_allocated = 0;
byte *g_rom_cards_ptr_allocated = 0;
void *g_memory_alloc_ptr = 0; /* for freeing memory area */
//Page_info page_info_rd_wr[2*65536 + PAGE_INFO_PAD_SIZE];
// Not saved == Debug only
int g_debug_file_fd = -1;
int g_fatal_log = -1;
char *g_fatal_log_strs[MAX_FATAL_LOGS];
Pc_log g_pc_log_array[PC_LOG_LEN + 2];
Data_log g_data_log_array[PC_LOG_LEN + 2];
Pc_log *g_log_pc_ptr = &(g_pc_log_array[0]);
Pc_log *g_log_pc_start_ptr = &(g_pc_log_array[0]);
Pc_log *g_log_pc_end_ptr = &(g_pc_log_array[PC_LOG_LEN]);
Data_log *g_log_data_ptr = &(g_data_log_array[0]);
Data_log *g_log_data_start_ptr = &(g_data_log_array[0]);
Data_log *g_log_data_end_ptr = &(g_data_log_array[PC_LOG_LEN]);
#define TOOLBOX_LOG_LEN 64
int g_toolbox_log_pos = 0;
word32 g_toolbox_log_array[TOOLBOX_LOG_LEN][8];
// OG Added sim65816_initglobals()
void sim65816_initglobals()
{
g_sim65816.g_fcycles_stop = 0.0;
g_sim65816.halt_sim = 0;
g_sim65816.enter_debug = 0;
g_sim65816.g_rom_version = -1;
// g_sim65816.g_user_halt_bad = 0;
// g_sim65816.g_halt_on_bad_read = 0;
// g_sim65816.g_ignore_bad_acc = 1
// g_sim65816.g_ignore_halts = 1;
g_sim65816.g_code_red = 0;
g_sim65816.g_code_yellow = 0;
g_sim65816.g_use_alib = 0;
g_sim65816.g_raw_serial = 1;
g_sim65816.g_iw2_emul = 0;
g_sim65816.g_serial_out_masking = 0;
//g_sim65816.g_serial_modem[2] = { 0, 1 };
g_sim65816.g_config_iwm_vbl_count = 0;
// g_pause=0;
g_sim65816.g_last_vbl_dcycs = START_DCYCS;
g_sim65816.g_cur_dcycs = START_DCYCS;
g_sim65816.g_last_vbl_dadjcycs = 0.0;
g_sim65816.g_dadjcycs = 0.0;
g_sim65816.g_wait_pending = 0;
g_sim65816.g_stp_pending = 0;
g_sim65816.g_num_irq = 0;
g_sim65816.g_num_brk = 0;
g_sim65816.g_num_cop = 0;
g_sim65816.g_num_enter_engine = 0;
g_sim65816.g_io_amt = 0;
g_sim65816.g_engine_action = 0;
g_sim65816.g_engine_halt_event = 0;
g_sim65816.g_engine_scan_int = 0;
g_sim65816.g_engine_doc_int = 0;
g_sim65816.g_testing = 0;
g_sim65816.g_testing_enabled = 0;
g_debug_file_fd = -1;
g_fatal_log = -1;
g_sim65816.g_25sec_cntr = 0;
g_sim65816.g_1sec_cntr = 0;
g_sim65816.g_dnatcycs_1sec = 0.0;
g_sim65816.g_natcycs_lastvbl = 0;
// g_sim65816.Verbose = 0; // OG Should not be reseted
g_sim65816.Halt_on = 0;
g_sim65816.g_mem_size_base = 256*1024; /* size of motherboard memory */
g_sim65816.g_mem_size_total = 256*1024; /* Total contiguous RAM from 0 */
// OG Added missing initializers 120710
// g_sim65816.g_force_depth = -1; // OG Should be no reseted
// g_screen_depth = 8; // OG Should be no reseted
g_sim65816.g_vbl_count = 0;
g_sim65816.g_vbl_count_since_lastvblank = 0;
#if ! (defined(DRIVER_IOS) || defined(DRIVER_OSX) ) || defined(ACTIVEGSPLUGIN) // AsyncEvent not yet available on Mac
// OG reinitializing async events when emulator resets
extern void reset_async_event();
reset_async_event();
#endif
g_sim65816.g_vbl_index_count = 0;
// g_sim65816.g_limit_speed = 0; // OG Should be no reseted
g_sim65816.g_sim_sum = 0.0;
g_sim65816.g_cur_sim_dtime = 0.0;
g_sim65816.g_projected_pmhz = 1.0;
g_sim65816.g_zip_pmhz = 8.0;
g_sim65816.g_sim_mhz = 100.0;
g_sim65816.g_line_ref_amt = 1;
g_sim65816.g_video_line_update_interval = 0;
g_sim65816.g_dtime_last_vbl = 0.0;
g_sim65816.g_dtime_expected = (1.0/60.0);
g_sim65816.g_scan_int_events = 0;
}
void
show_pc_log()
{
FILE *pcfile;
Pc_log *log_pc_ptr;
Data_log *log_data_ptr;
double dcycs;
double start_dcycs;
word32 instr;
word32 psr;
word32 acc, xreg, yreg;
word32 stack, direct;
word32 dbank;
word32 kpc;
int data_wrap;
int accsize, xsize;
int num;
int i;
pcfile = fopen("pc_log_out", "w");
if(pcfile == 0) {
fprintf(stderr,"fopen failed...errno: %d\n", errno);
x_exit(2);
}
log_pc_ptr = g_log_pc_ptr;
log_data_ptr = g_log_data_ptr;
#if 0
fprintf(pcfile, "current pc_log_ptr: %p, start: %p, end: %p\n",
log_pc_ptr, log_pc_start_ptr, log_pc_end_ptr);
#endif
start_dcycs = log_pc_ptr->dcycs;
dcycs = start_dcycs;
data_wrap = 0;
/* find first data entry */
while(data_wrap < 2 && (log_data_ptr->dcycs < dcycs)) {
log_data_ptr++;
if(log_data_ptr >= g_log_data_end_ptr) {
log_data_ptr = g_log_data_start_ptr;
data_wrap++;
}
}
fprintf(pcfile, "start_dcycs: %9.2f\n", start_dcycs);
for(i = 0; i < PC_LOG_LEN; i++) {
dcycs = log_pc_ptr->dcycs;
while((data_wrap < 2) && (log_data_ptr->dcycs <= dcycs) &&
(log_data_ptr->dcycs >= start_dcycs)) {
fprintf(pcfile, "DATA set %06x = %06x (%d) %9.2f\n",
log_data_ptr->addr, log_data_ptr->val,
log_data_ptr->size,
log_data_ptr->dcycs - start_dcycs);
log_data_ptr++;
if(log_data_ptr >= g_log_data_end_ptr) {
log_data_ptr = g_log_data_start_ptr;
data_wrap++;
}
}
dbank = (log_pc_ptr->dbank_kpc >> 24) & 0xff;
kpc = log_pc_ptr->dbank_kpc & 0xffffff;
instr = log_pc_ptr->instr;
psr = (log_pc_ptr->psr_acc >> 16) & 0xffff;;
acc = log_pc_ptr->psr_acc & 0xffff;;
xreg = (log_pc_ptr->xreg_yreg >> 16) & 0xffff;;
yreg = log_pc_ptr->xreg_yreg & 0xffff;;
stack = (log_pc_ptr->stack_direct >> 16) & 0xffff;;
direct = log_pc_ptr->stack_direct & 0xffff;;
num = log_pc_ptr - g_log_pc_start_ptr;
accsize = 2;
xsize = 2;
if(psr & 0x20) {
accsize = 1;
}
if(psr & 0x10) {
xsize = 1;
}
fprintf(pcfile, "%04x: A:%04x X:%04x Y:%04x P:%03x "
"S:%04x D:%04x B:%02x %9.2f ", i,
acc, xreg, yreg, psr, stack, direct, dbank,
(dcycs-start_dcycs));
do_dis(pcfile, kpc, accsize, xsize, 1, instr);
log_pc_ptr++;
if(log_pc_ptr >= g_log_pc_end_ptr) {
log_pc_ptr = g_log_pc_start_ptr;
}
}
fclose(pcfile);
}
word32
toolbox_debug_4byte(word32 addr)
{
word32 part1, part2;
/* If addr looks safe, use it */
if(addr > 0xbffc) {
return (word32)-1;
}
part1 = get_memory16_c(addr, 0);
part1 = (part1 >> 8) + ((part1 & 0xff) << 8);
part2 = get_memory16_c(addr+2, 0);
part2 = (part2 >> 8) + ((part2 & 0xff) << 8);
return (part1 << 16) + part2;
}
void
toolbox_debug_c(word32 xreg, word32 stack, double *cyc_ptr)
{
int pos;
pos = g_toolbox_log_pos;
stack += 9;
g_toolbox_log_array[pos][0] = (word32)(g_sim65816.g_last_vbl_dcycs + *cyc_ptr);
g_toolbox_log_array[pos][1] = stack+1;
g_toolbox_log_array[pos][2] = xreg;
g_toolbox_log_array[pos][3] = toolbox_debug_4byte(stack+1);
g_toolbox_log_array[pos][4] = toolbox_debug_4byte(stack+5);
g_toolbox_log_array[pos][5] = toolbox_debug_4byte(stack+9);
g_toolbox_log_array[pos][6] = toolbox_debug_4byte(stack+13);
g_toolbox_log_array[pos][7] = toolbox_debug_4byte(stack+17);
pos++;
if(pos >= TOOLBOX_LOG_LEN) {
pos = 0;
}
g_toolbox_log_pos = pos;
}
void
show_toolbox_log()
{
int pos;
int i;
pos = g_toolbox_log_pos;
for(i = TOOLBOX_LOG_LEN - 1; i >= 0; i--) {
printf("%2d:%2d: %08x %06x %04x: %08x %08x %08x %08x %08x\n",
i, pos,
g_toolbox_log_array[pos][0],
g_toolbox_log_array[pos][1],
g_toolbox_log_array[pos][2],
g_toolbox_log_array[pos][3],
g_toolbox_log_array[pos][4],
g_toolbox_log_array[pos][5],
g_toolbox_log_array[pos][6],
g_toolbox_log_array[pos][7]);
pos++;
if(pos >= TOOLBOX_LOG_LEN) {
pos = 0;
}
}
}
#if 0
/* get_memory_c is not used, get_memory_asm is, but this does what the */
/* assembly language would do */
word32
get_memory_c(word32 loc, int diff_cycles)
{
byte *addr;
word32 result;
int index;
#ifdef CHECK_BREAKPOINTS
check_breakpoints_c(loc);
#endif
index = loc >> 8;
result = page_info[index].rd;
if(result & BANK_IO_BIT) {
return get_memory_io(loc, diff_cycles);
}
addr = (byte *)((result & 0xffffff00) + (loc & 0xff));
return *addr;
}
#endif
word32
get_memory_io(word32 loc, double *cyc_ptr)
{
int tmp;
if(loc > 0xffffff) {
halt_printf("get_memory_io:%08x out of range==halt!\n", loc);
return 0;
}
tmp = loc & 0xfef000;
if(tmp == 0xc000 || tmp == 0xe0c000) {
return(io_read(loc & 0xfff, cyc_ptr));
}
/* Else it's an illegal addr...skip if memory sizing */
if(loc >= g_sim65816.g_mem_size_total) {
if((loc & 0xfffe) == 0) {
#if 0
printf("get_io assuming mem sizing, not halting\n");
#endif
return 0;
}
}
/* Skip reads to f80000 and f00000, just return 0 */
if((loc & 0xf70000) == 0xf00000) {
return 0;
}
if((loc & 0xff0000) == 0xef0000) {
/* DOC RAM */
return (g_sound.doc_ram[loc & 0xffff]);
}
g_sim65816.g_code_yellow++;
if(r_sim65816.g_ignore_bad_acc && !r_sim65816.g_user_halt_bad) {
/* print no message, just get out. User doesn't want */
/* to be bothered by buggy programs */
return 0;
}
printf("get_memory_io for addr: %06x\n", loc);
printf("stat for addr: %06x = %p\n", loc,
GET_PAGE_INFO_RD((loc >> 8) & 0xffff));
set_halt(r_sim65816.g_halt_on_bad_read | r_sim65816.g_user_halt_bad);
return 0;
}
#if 0
word32
get_memory16_pieces(word32 loc, int diff_cycles)
{
return(get_memory_c(loc, diff_cycles) +
(get_memory_c(loc+1, diff_cycles) << 8));
}
word32
get_memory24(word32 loc, int diff_cycles)
{
return(get_memory_c(loc, diff_cycles) +
(get_memory_c(loc+1, diff_cycles) << 8) +
(get_memory_c(loc+2, diff_cycles) << 16));
}
#endif
#if 0
void
set_memory(word32 loc, int val, int diff_cycles)
{
byte *ptr;
word32 new_addr;
word32 tmp;
word32 or_val;
int or_pos;
int old_slow_val;
#ifdef CHECK_BREAKPOINTS
check_breakpoints_c(loc);
#endif
tmp = GET_PAGE_INFO_WR((loc>>8) & 0xffff);
if(tmp & BANK_IO) {
set_memory_io(loc, val, diff_cycles);
return;
}
if((loc & 0xfef000) == 0xe0c000) {
printf("set_memory_special: non-io for addr %08x, %02x, %d\n",
loc, val, diff_cycles);
halt_printf("tmp: %08x\n", tmp);
}
ptr = (byte *)(tmp & (~0xff));
new_addr = loc & 0xffff;
old_slow_val = val;
if(tmp & BANK_SHADOW) {
old_slow_val = g_slow_memory_ptr[new_addr];
} else if(tmp & BANK_SHADOW2) {
new_addr += 0x10000;
old_slow_val = g_slow_memory_ptr[new_addr];
}
if(old_slow_val != val) {
g_slow_memory_ptr[new_addr] = val;
or_pos = (new_addr >> SHIFT_PER_CHANGE) & 0x1f;
or_val = DEP1(1, or_pos, 0);
if((new_addr >> CHANGE_SHIFT) >= SLOW_MEM_CH_SIZE) {
printf("new_addr: %08x\n", new_addr);
x_exit(12);
}
g_video.slow_mem_changed[(new_addr & 0xffff) >> CHANGE_SHIFT] |= or_val;
}
ptr[loc & 0xff] = val;
}
#endif
void
set_memory_io(word32 loc, int val, double *cyc_ptr)
{
word32 tmp;
tmp = loc & 0xfef000;
if(tmp == 0xc000 || tmp == 0xe0c000) {
io_write(loc, val, cyc_ptr);
return;
}
/* Else it's an illegal addr */
if(loc >= g_sim65816.g_mem_size_total) {
if((loc & 0xfffe) == 0) {
#if 0
printf("set_io assuming mem sizing, not halting\n");
#endif
return;
}
}
/* ignore writes to ROM */
if((loc & 0xfc0000) == 0xfc0000) {
return;
}
if((loc & 0xff0000) == 0xef0000) {
/* DOC RAM */
g_sound.doc_ram[loc & 0xffff] = val;
return;
}
if(r_sim65816.g_ignore_bad_acc && !r_sim65816.g_user_halt_bad) {
/* print no message, just get out. User doesn't want */
/* to be bothered by buggy programs */
return;
}
if((loc & 0xffc000) == 0x00c000) {
printf("set_memory %06x = %02x, warning\n", loc, val);
return;
}
halt_printf("set_memory %06x = %02x, stopping\n", loc, val);
return;
}
#if 0
void
check_breakpoints_c(word32 loc)
{
int index;
int count;
int i;
index = (loc & (MAX_BP_INDEX-1));
count = breakpoints[index].count;
if(count) {
for(i = 0; i < count; i++) {
if(loc == breakpoints[index].addrs[i]) {
halt_printf("Write hit breakpoint %d!\n", i);
}
}
}
}
#endif
void
show_regs_act(Engine_reg *eptr)
{
int tmp_acc, tmp_x, tmp_y, tmp_psw;
int kpc;
int direct_page, dbank;
int stack;
kpc = eptr->kpc;
tmp_acc = eptr->acc;
direct_page = eptr->direct;
dbank = eptr->dbank;
stack = eptr->stack;
tmp_x = eptr->xreg;
tmp_y = eptr->yreg;
tmp_psw = eptr->psr;
printf(" PC=%02x.%04x A=%04x X=%04x Y=%04x P=%03x",
kpc>>16, kpc & 0xffff ,tmp_acc,tmp_x,tmp_y,tmp_psw);
printf(" S=%04x D=%04x B=%02x,cyc:%.3f\n", stack, direct_page,
dbank, g_sim65816.g_cur_dcycs);
}
void
show_regs()
{
show_regs_act(&g_sim65816.engine);
}
//OG change exit() to x_exit()
extern void x_exit(int);
void my_exit(int ret)
{
end_screen();
printf("exiting (ret=%d)\n",ret);
x_exit(ret);
}
void
do_reset()
{
g_moremem.g_c068_statereg = 0x08 + 0x04 + 0x01; /* rdrom, lcbank2, intcx */
g_moremem.g_c035_shadow_reg = 0;
g_moremem.g_c08x_wrdefram = 1;
g_moremem.g_c02d_int_crom = 0;
g_moremem.g_c023_val = 0;
g_moremem.g_c041_val = 0;
g_sim65816.engine.psr = (g_sim65816.engine.psr | 0x134) & ~(0x08);
g_sim65816.engine.stack = 0x100 + (g_sim65816.engine.stack & 0xff);
g_sim65816.engine.dbank = 0;
g_sim65816.engine.direct = 0;
g_sim65816.engine.xreg &= 0xff;
g_sim65816.engine.yreg &= 0xff;
g_sim65816.g_wait_pending = 0;
g_sim65816.g_stp_pending = 0;
video_reset();
adb_reset();
iwm_reset();
scc_reset();
sound_reset(g_sim65816.g_cur_dcycs);
setup_pageinfo();
change_display_mode(g_sim65816.g_cur_dcycs);
g_moremem.g_irq_pending = 0;
g_sim65816.engine.kpc = get_memory16_c(0x00fffc, 0);
//set_bp(g_sim65816.engine.kpc);
// set_bp(0x666,(enum mode_breakpoint)(BRK_X|BRK_PATCH),"067B:60");
g_stepping = 0;
// OG Cleared remaining IRQS on RESET
{
/*
extern int g_scan_int_events ;
extern int g_c023_val;
#define REMOVEIRQ(ADR) { extern int ADR; if (ADR) { remove_irq(); ADR=0; } }
#define CLEARIRQ(ADR) { extern int ADR; ADR=0; }
REMOVEIRQ(g_adb_kbd_srq_sent);
REMOVEIRQ(g_adb_data_int_sent);
REMOVEIRQ(g_adb_mouse_int_sent);
REMOVEIRQ(c046_vbl_irq_pending);
REMOVEIRQ(c046_25sec_irq_pend);
REMOVEIRQ(c023_scan_int_irq_pending);
REMOVEIRQ(c023_1sec_int_irq_pending);
REMOVEIRQ(c046_vbl_irq_pending);
CLEARIRQ(c041_en_25sec_ints);
CLEARIRQ(c041_en_vbl_ints);
CLEARIRQ(c041_en_switch_ints);
CLEARIRQ(c041_en_move_ints);
CLEARIRQ(c041_en_mouse);
g_sim65816.g_scan_int_events = 0;
initialize_events();
*/
if (g_moremem.g_irq_pending)
halt_printf("*** irq remainings...\n");
/*
g_moremem.g_irq_pending = 0;
// reinitiliase zip speed (not sure)???
// g_moremem.g_zipgs_reg_c05a = 0x80;
*/
}
}
#define CHECK(start, var, value, var1, var2) \
var2 = PTR2WORD(&(var)); \
var1 = PTR2WORD((start)); \
if((var2 - var1) != value) { \
printf("CHECK: " #var " is 0x%x, but " #value " is 0x%x\n", \
(var2 - var1), value); \
x_exit(5); \
}
void
check_engine_asm_defines()
{
Fplus fplus;
Fplus *fplusptr;
Pc_log pclog;
Pc_log *pcptr;
Engine_reg ereg;
Engine_reg *eptr;
word32 val1;
word32 val2;
eptr = &ereg;
CHECK(eptr, eptr->fcycles, ENGINE_FCYCLES, val1, val2);
CHECK(eptr, eptr->fplus_ptr, ENGINE_FPLUS_PTR, val1, val2);
CHECK(eptr, eptr->acc, ENGINE_REG_ACC, val1, val2);
CHECK(eptr, eptr->xreg, ENGINE_REG_XREG, val1, val2);
CHECK(eptr, eptr->yreg, ENGINE_REG_YREG, val1, val2);
CHECK(eptr, eptr->stack, ENGINE_REG_STACK, val1, val2);
CHECK(eptr, eptr->dbank, ENGINE_REG_DBANK, val1, val2);
CHECK(eptr, eptr->direct, ENGINE_REG_DIRECT, val1, val2);
CHECK(eptr, eptr->psr, ENGINE_REG_PSR, val1, val2);
CHECK(eptr, eptr->kpc, ENGINE_REG_KPC, val1, val2);
pcptr = &pclog;
CHECK(pcptr, pcptr->dbank_kpc, LOG_PC_DBANK_KPC, val1, val2);
CHECK(pcptr, pcptr->instr, LOG_PC_INSTR, val1, val2);
CHECK(pcptr, pcptr->psr_acc, LOG_PC_PSR_ACC, val1, val2);
CHECK(pcptr, pcptr->xreg_yreg, LOG_PC_XREG_YREG, val1, val2);
CHECK(pcptr, pcptr->stack_direct, LOG_PC_STACK_DIRECT, val1, val2);
if(LOG_PC_SIZE != sizeof(pclog)) {
printf("LOG_PC_SIZE: %d != sizeof=%d\n", LOG_PC_SIZE,
(int)sizeof(pclog));
x_exit(2);
}
fplusptr = &fplus;
CHECK(fplusptr, fplusptr->plus_1, FPLUS_PLUS_1, val1, val2);
CHECK(fplusptr, fplusptr->plus_2, FPLUS_PLUS_2, val1, val2);
CHECK(fplusptr, fplusptr->plus_3, FPLUS_PLUS_3, val1, val2);
CHECK(fplusptr, fplusptr->plus_x_minus_1, FPLUS_PLUS_X_M1, val1, val2);
}
byte *
memalloc_align(int size, int skip_amt, void **alloc_ptr)
{
byte *bptr;
word32 addr;
word32 offset;
skip_amt = MAX(256, skip_amt);
bptr = (byte*)calloc(size + skip_amt + 256, 1); // OG Added cast
if(alloc_ptr) {
/* Save allocation address */
*alloc_ptr = bptr;
}
addr = PTR2WORD(bptr) & 0xff;
/* must align bptr to be 256-byte aligned */
/* this code should work even if ptrs are > 32 bits */
offset = ((addr + skip_amt - 1) & (~0xff)) - addr;
return (bptr + offset);
}
void
memory_ptr_init()
{
word32 mem_size;
/* This routine may be called several times--each time the ROM file */
/* changes this will be called */
mem_size = MIN(0xdf0000, g_sim65816.g_mem_size_base + g_sim65816.g_mem_size_exp);
g_sim65816.g_mem_size_total = mem_size;
// OG using memory_ptr_shut() instead
memory_ptr_shut();
g_memory_ptr = memalloc_align(mem_size, 256, &g_memory_alloc_ptr);
printf("RAM size is 0 - %06x (%.2fMB)\n", mem_size, (double)mem_size/(1024.0*1024.0));
}
// OG Added memory_ptr_shut
void
memory_ptr_shut()
{
if(g_memory_alloc_ptr)
{
free(g_memory_alloc_ptr);
g_memory_alloc_ptr = 0;
}
g_memory_ptr = 0;
}
void
kegsmain_init(int argc, char **argv)
{
int diff;
printf("kegsmain");
r_sim65816.set_state(INITIALIZING);
//initSavedStateModule();
// OG Restoring globals
sim65816_initglobals();
moremem_init();
//OG Disabling argument parsing
#ifndef ACTIVEGS
int skip_amt;
int tmp1;
/* parse args */
for(int i = 1; i < argc; i++) {
if(!strcmp("-badrd", argv[i])) {
printf("Halting on bad reads\n");
r_sim65816.g_halt_on_bad_read = 2;
} else if(!strcmp("-noignbadacc", argv[i])) {
printf("Not ignoring bad memory accesses\n");
r_sim65816.g_ignore_bad_acc = 0;
} else if(!strcmp("-noignhalt", argv[i])) {
printf("Not ignoring code red halts\n");
r_sim65816.g_ignore_halts = 0;
} else if(!strcmp("-test", argv[i])) {
printf("Allowing testing\n");
g_sim65816.g_testing_enabled = 1;
} else if(!strcmp("-hpdev", argv[i])) {
printf("Using /dev/audio\n");
g_sim65816.g_use_alib = 0;
} else if(!strcmp("-alib", argv[i])) {
printf("Using Aserver audio server\n");
g_sim65816.g_use_alib = 1;
} else if(!strcmp("-24", argv[i])) {
printf("Using 24-bit visual\n");
g_sim65816.g_force_depth = 24;
} else if(!strcmp("-16", argv[i])) {
printf("Using 16-bit visual\n");
g_sim65816.g_force_depth = 16;
} else if(!strcmp("-15", argv[i])) {
printf("Using 15-bit visual\n");
g_sim65816.g_force_depth = 15;
} else if(!strcmp("-mem", argv[i])) {
if((i+1) >= argc) {
printf("Missing argument\n");
x_exit(1);
}
g_sim65816.g_mem_size_exp = strtol(argv[i+1], 0, 0) & 0x00ff0000;
printf("Using %d as memory size\n", g_sim65816.g_mem_size_exp);
i++;
} else if(!strcmp("-skip", argv[i])) {
if((i+1) >= argc) {
printf("Missing argument\n");
x_exit(1);
}
skip_amt = strtol(argv[i+1], 0, 0);
printf("Using %d as skip_amt\n", skip_amt);
g_video.g_screen_redraw_skip_amt = skip_amt;
i++;
} else if(!strcmp("-audio", argv[i])) {
if((i+1) >= argc) {
printf("Missing argument\n");
x_exit(1);
}
tmp1 = strtol(argv[i+1], 0, 0);
printf("Using %d as audio enable val\n", tmp1);
g_sound.g_audio_enable = tmp1;
i++;
}
/*
else if(!strcmp("-arate", argv[i])) {
if((i+1) >= argc) {
printf("Missing argument\n");
x_exit(1);
}
tmp1 = strtol(argv[i+1], 0, 0);
printf("Using %d as preferred audio rate\n", tmp1);
g_preferred_rate = tmp1;
i++;
}*/
else if(!strcmp("-v", argv[i])) {
if((i+1) >= argc) {
printf("Missing argument\n");
x_exit(1);
}
tmp1 = strtol(argv[i+1], 0, 0);
printf("Setting g_sim65816.Verbose = 0x%03x\n", tmp1);
Verbose = tmp1;
i++;
#ifndef __NeXT__
} else if(!strcmp("-display", argv[i])) {
if((i+1) >= argc) {
printf("Missing argument\n");
x_exit(1);
}
printf("Using %s as display\n", argv[i+1]);
sprintf(g_sim65816.g_display_env, "DISPLAY=%s", argv[i+1]);
putenv(&g_sim65816.g_display_env[0]);
i++;
#endif
}
#ifdef DRIVER_LINUX
else if(!strcmp("-noshm", argv[i])) {
printf("Not using X shared memory\n");
g_use_shmem = 0;
}
#endif
else if(!strcmp("-joystick", argv[i])) {
printf("Ignoring -joystick option\n");
} else if(!strcmp("-dhr140", argv[i])) {
printf("Using simple dhires color map\n");
g_video.g_use_dhr140 = 1;
} else if(!strcmp("-bw", argv[i])) {
printf("Forcing black-and-white hires modes\n");
g_video.g_cur_a2_stat |= ALL_STAT_COLOR_C021;
r_sim65816.set_color_mode(COLORMODE_BW);
// s_video.g_use_bw_hires = 1;
} else {
printf("Bad option: %s\n", argv[i]);
x_exit(3);
}
}
#endif
check_engine_asm_defines();
fixed_memory_ptrs_init();
if(sizeof(word32) != 4) {
printf("sizeof(word32) = %d, must be 4!\n",
(int)sizeof(word32));
x_exit(1);
}
if(!g_engine_c_mode) {
diff = &defs_instr_end_8 - &defs_instr_start_8;
if(diff != 1) {
printf("defs_instr_end_8 - start is %d\n",diff);
x_exit(1);
}
diff = &defs_instr_end_16 - &defs_instr_start_16;
if(diff != 1) {
printf("defs_instr_end_16 - start is %d\n", diff);
x_exit(1);
}
diff = &op_routs_end - &op_routs_start;
if(diff != 1) {
printf("op_routs_end - start is %d\n", diff);
x_exit(1);
}
}
iwm_init();
config_init();
load_roms_init_memory();
init_reg();
clear_halt();
initialize_events();
video_init();
sound_init();
marinetti_init();
scc_init();
adb_init();
joystick_init();
if(g_sim65816.g_rom_version >= 3) {
g_moremem.g_c036_val_speed |= 0x40; /* set power-on bit */
}
g_num_breakpoints = 0;
#ifdef ACTIVEGS
extern void apply_breakpoints();
apply_breakpoints();
#endif
do_reset();
g_stepping = 0;
r_sim65816.request_update_emulator_runtime_config();
r_sim65816.set_state(RUNNING);
if (g_driver.x_post_event)
g_driver.x_post_event("emulator_launched");
}
void kegsmain_shut()
{
/* If we get here, we hit a breakpoint, call debug intfc */
do_debug_intfc();
r_sim65816.set_state(SHUTTING_DOWN);
marinetti_shutdown();
sound_shutdown();
adb_shut();
iwm_shut();
fixed_memory_ptrs_shut();
load_roms_shut_memory();
clear_fatal_logs();
end_screen();
r_sim65816.set_state(NO_INITIALIZED);
//return 0;
}
int
kegsmain(int argc, char **argv)
{
kegsmain_init(argc,argv);
#ifdef ACTIVEGS
{
extern void disableConsole();
disableConsole();
}
#endif
// do go
extern int g_config_control_panel;
extern void run_prog_init();
extern void run_prog_shut();
extern int run_prog_loop();
g_config_control_panel = 0;
clear_halt();
run_prog_init();
while(1)
{
int ret = run_prog_loop();
if (!ret)
break;
}
run_prog_shut();
show_regs();
g_config_control_panel = 1;
kegsmain_shut();
return 0;
}
void
load_roms_init_memory()
{
config_load_roms();
memory_ptr_init();
clk_setup_bram_version(); /* Must be after config_load_roms */
if(g_sim65816.g_rom_version >= 3) {
g_moremem.g_c036_val_speed |= 0x40; /* set power-on bit */
} else {
g_moremem.g_c036_val_speed &= (~0x40); /* clear the bit */
}
do_reset();
/* if user booted ROM 01, switches to ROM 03, then switches back */
/* to ROM 01, then the reset routines call to Tool $0102 looks */
/* at uninitialized $e1/15fe and if it is negative it will JMP */
/* through $e1/1688 which ROM 03 left pointing to fc/0199 */
/* So set e1/15fe = 0 */
set_memory16_c(0xe115fe, 0, 0);
}
// OG Added load_roms_shut_memory
void load_roms_shut_memory()
{
memory_ptr_shut();
}
#ifndef ACTIVEGS
void
kegs_expand_path(char *out_ptr, const char *in_ptr, int maxlen)
{
char name_buf[256];
const char *tmp_ptr;
int name_len;
int in_char;
int state;
out_ptr[0] = 0;
name_len = 0;
state = 0;
/* See if in_ptr has ${} notation, replace with getenv or argv0 */
while(maxlen > 0) {
in_char = *in_ptr++;
*out_ptr++ = in_char;
maxlen--;
if(state == 0) {
/* No $ seen yet, look for it */
if(in_char == '$') {
state = 1;
}
} else if(state == 1) {
/* See if next char is '{' (dummy }) */
if(in_char == '{') { /* add dummy } */
state = 2;
name_len = 0;
out_ptr -= 2;
} else {
state = 0;
}
} else if(state == 2) {
/* fill name_buf ... dummy '{' */
out_ptr--;
if(in_char == '}') {
name_buf[name_len] = 0;
/* got token, now look it up */
tmp_ptr = "";
if(!strncmp("0", name_buf, 128)) {
/* Replace ${0} with g_argv0_path */
tmp_ptr = &(g_argv0_path[0]);
} else {
tmp_ptr = getenv(name_buf);
if(tmp_ptr == 0) {
tmp_ptr = "";
}
}
strncpy(out_ptr, tmp_ptr, maxlen);
out_ptr += strlen(tmp_ptr);
maxlen -= strlen(tmp_ptr);
state = 0;
} else {
name_buf[name_len++] = in_char;
}
}
if(in_char == 0) {
/* make sure its null terminated */
*out_ptr++ = 0;
break;
}
}
}
void
setup_kegs_file(char *outname, int maxlen, int ok_if_missing,
int can_create_file, const char **name_ptr)
{
char local_path[256];
struct stat stat_buf;
const char **path_ptr;
const char **cur_name_ptr, **save_path_ptr;
int ret;
outname[0] = 0;
path_ptr = &g_kegs_default_paths[0];
save_path_ptr = path_ptr;
while(*path_ptr) {
kegs_expand_path(&(local_path[0]), *path_ptr, 250);
cur_name_ptr = name_ptr;
while(*cur_name_ptr) {
strcpy(outname, &(local_path[0]));
strncat(outname, *cur_name_ptr, 255-strlen(outname));
if(!ok_if_missing) {
printf("Trying '%s'\n", outname);
}
ret = stat(outname, &stat_buf);
if(ret == 0) {
/* got it! */
return;
}
cur_name_ptr++;
}
path_ptr++;
}
outname[0] = 0;
if(ok_if_missing > 0) {
return;
}
/* couldn't find it, print out all the attempts */
path_ptr = save_path_ptr;
fatal_printf("Could not find required file \"%s\" in any of these "
"directories:\n", *name_ptr);
while(*path_ptr) {
fatal_printf(" %s\n", *path_ptr++);
}
if(can_create_file) {
// Ask user if it's OK to create the file
x_dialog_create_kegs_conf(*name_ptr);
can_create_file = 0;
// But clear out the fatal_printfs first
clear_fatal_logs();
setup_kegs_file(outname, maxlen, ok_if_missing,
can_create_file, name_ptr);
// It's one-level of recursion--it cannot loop since we
// clear can_create_file.
// If it returns, then there was succes and we should get out
return;
} else if(ok_if_missing) {
/* Just show an alert and return if ok_if_missing < 0 */
x_show_alert(0, 0);
return;
}
system("pwd");
my_exit(2);
}
#endif
void
initialize_events()
{
int i;
for(i = 1; i < MAX_EVENTS; i++) {
g_sim65816.g_event_list[i-1].next = &g_sim65816.g_event_list[i];
}
g_sim65816.g_event_free.next = &g_sim65816.g_event_list[0];
g_sim65816.g_event_list[MAX_EVENTS-1].next = 0;
g_sim65816.g_event_start.next = 0;
g_sim65816.g_event_start.dcycs = 0.0;
add_event_entry(DCYCS_IN_16MS, EV_60HZ);
}
void
check_for_one_event_type(int type)
{
Event *ptr;
int count;
int depth;
count = 0;
depth = 0;
ptr = g_sim65816.g_event_start.next;
while(ptr != 0) {
depth++;
if(ptr->type == type) {
count++;
if(count != 1) {
halt_printf("in check_for_1, type %d found at "
"depth: %d, count: %d, at %f\n",
type, depth, count, ptr->dcycs);
}
}
ptr = ptr->next;
}
}
void
add_event_entry(double dcycs, int type)
{
Event *this_event;
Event *ptr, *prev_ptr;
int tmp_type;
int done;
this_event = g_sim65816.g_event_free.next;
if(this_event == 0) {
halt_printf("Out of queue entries!\n");
show_all_events();
return;
}
g_sim65816.g_event_free.next = this_event->next;
this_event->type = type;
tmp_type = type & 0xff;
if((dcycs < 0.0) || (dcycs > (g_sim65816.g_cur_dcycs + 50*1000*1000.0)) ||
((dcycs < g_sim65816.g_cur_dcycs) && (tmp_type != EV_SCAN_INT))) {
halt_printf("add_event: dcycs: %f, type:%05x, cur_dcycs: %f!\n",
dcycs, type, g_sim65816.g_cur_dcycs);
dcycs = g_sim65816.g_cur_dcycs + 1000.0;
}
ptr = g_sim65816.g_event_start.next;
if(ptr && (dcycs < ptr->dcycs)) {
/* create event before next expected event */
/* do this by setting HALT_EVENT */
set_halt(HALT_EVENT);
}
prev_ptr = &g_sim65816.g_event_start;
ptr = g_sim65816.g_event_start.next;
done = 0;
while(!done) {
if(ptr == 0) {
this_event->next = ptr;
this_event->dcycs = dcycs;
prev_ptr->next = this_event;
return;
} else {
if(ptr->dcycs < dcycs) {
/* step across this guy */
prev_ptr = ptr;
ptr = ptr->next;
} else {
/* go in front of this guy */
this_event->dcycs = dcycs;
this_event->next = ptr;
prev_ptr->next = this_event;
return;
}
}
}
}
double
remove_event_entry(int type)
{
Event *ptr, *prev_ptr;
Event *next_ptr;
ptr = g_sim65816.g_event_start.next;
prev_ptr = &g_sim65816.g_event_start;
while(ptr != 0) {
if((ptr->type & 0xffff) == type) {
/* got it, remove it */
next_ptr = ptr->next;
prev_ptr->next = next_ptr;
/* Add ptr to free list */
ptr->next = g_sim65816.g_event_free.next;
g_sim65816.g_event_free.next = ptr;
return ptr->dcycs;
}
prev_ptr = ptr;
ptr = ptr->next;
}
halt_printf("remove event_entry: %08x, but not found!\n", type);
if((type & 0xff) == EV_DOC_INT) {
printf("DOC, g_doc_saved_ctl = %02x\n", g_sound.g_doc_saved_ctl);
}
#ifdef HPUX
U_STACK_TRACE();
#endif
show_all_events();
return 0.0;
}
void
add_event_stop(double dcycs)
{
add_event_entry(dcycs, EV_STOP);
}
void
add_event_doc(double dcycs, int osc)
{
if(dcycs < g_sim65816.g_cur_dcycs) {
dcycs = g_sim65816.g_cur_dcycs;
#if 0
halt_printf("add_event_doc: dcycs: %f, cur_dcycs: %f\n",
dcycs, g_sim65816.g_cur_dcycs);
#endif
}
add_event_entry(dcycs, EV_DOC_INT + (osc << 8));
}
void
add_event_scc(double dcycs, int type)
{
if(dcycs < g_sim65816.g_cur_dcycs) {
dcycs = g_sim65816.g_cur_dcycs;
}
add_event_entry(dcycs, EV_SCC + (type << 8));
}
void
add_event_vbl()
{
double dcycs;
dcycs = g_sim65816.g_last_vbl_dcycs + (DCYCS_IN_16MS * (192.0/262.0));
add_event_entry(dcycs, EV_VBL_INT);
}
void
add_event_vid_upd(int line)
{
double dcycs;
dcycs = g_sim65816.g_last_vbl_dcycs + ((DCYCS_IN_16MS * line) / 262.0);
add_event_entry(dcycs, EV_VID_UPD + (line << 8));
}
double
remove_event_doc(int osc)
{
return remove_event_entry(EV_DOC_INT + (osc << 8));
}
double
remove_event_scc(int type)
{
return remove_event_entry(EV_SCC + (type << 8));
}
void
show_all_events()
{
Event *ptr;
int count;
double dcycs;
count = 0;
ptr = g_sim65816.g_event_start.next;
while(ptr != 0) {
dcycs = ptr->dcycs;
printf("Event: %02x: type: %05x, dcycs: %f (%f)\n",
count, ptr->type, dcycs, dcycs - g_sim65816.g_cur_dcycs);
ptr = ptr->next;
count++;
}
}
void
show_pmhz()
{
printf("Pmhz: %f, c036:%02x, limit: %d\n",
g_sim65816.g_projected_pmhz, g_moremem.g_c036_val_speed, g_sim65816.get_limit_speed());
}
void
setup_zip_speeds()
{
double frecip;
double fmhz;
int mult;
mult = 16 - ((g_moremem.g_zipgs_reg_c05a >> 4) & 0xf);
// 16 = full speed, 1 = 1/16th speed
fmhz = (8.0 * mult) / 16.0;
#if 0
if(mult == 16) {
/* increase full speed by 19% to make zipgs freq measuring */
/* programs work correctly */
fmhz = fmhz * 1.19;
}
#endif
frecip = 1.0 / fmhz;
g_sim65816.g_zip_pmhz = fmhz;
g_sim65816.g_recip_projected_pmhz_zip.plus_1 = frecip;
g_sim65816.g_recip_projected_pmhz_zip.plus_2 = 2.0 * frecip;
g_sim65816.g_recip_projected_pmhz_zip.plus_3 = 3.0 * frecip;
if(frecip >= 0.5) {
g_sim65816.g_recip_projected_pmhz_zip.plus_x_minus_1 = 1.01;
} else {
g_sim65816.g_recip_projected_pmhz_zip.plus_x_minus_1 = 1.01 - frecip;
}
}
void
run_prog_init()
{
Fplus *fplus_ptr;
Event *this_event;
Event *db1;
double dcycs;
double now_dtime;
double prev_dtime;
double prerun_fcycles;
double fspeed_mult;
double fcycles_stop;
word32 ret;
word32 zip_speed_0tof, zip_speed_0tof_new;
int zip_en, zip_follow_cps;
int type;
int motor_on;
int iwm_1;
int iwm_25;
int limit_speed;
int apple35_sel;
int fast, zip_speed, faster_than_28, unl_speed;
int this_type;
fflush(stdout);
g_sim65816.g_cur_sim_dtime = 0.0;
g_sim65816.g_recip_projected_pmhz_slow.plus_1 = 1.0;
g_sim65816.g_recip_projected_pmhz_slow.plus_2 = 2.0;
g_sim65816.g_recip_projected_pmhz_slow.plus_3 = 3.0;
g_sim65816.g_recip_projected_pmhz_slow.plus_x_minus_1 = 0.9;
g_sim65816.g_recip_projected_pmhz_fast.plus_1 = (1.0 / DEFAULT_GS_SPEED);
g_sim65816.g_recip_projected_pmhz_fast.plus_2 = (2.0 / DEFAULT_GS_SPEED);
g_sim65816.g_recip_projected_pmhz_fast.plus_3 = (3.0 / DEFAULT_GS_SPEED);
g_sim65816.g_recip_projected_pmhz_fast.plus_x_minus_1 = (1.98 - (1.0/DEFAULT_GS_SPEED));
zip_speed_0tof = g_moremem.g_zipgs_reg_c05a & 0xf0;
setup_zip_speeds();
if(g_sim65816.engine.fplus_ptr == 0) {
g_sim65816.g_recip_projected_pmhz_unl = g_sim65816.g_recip_projected_pmhz_slow;
}
}
int
run_prog_loop()
{
Fplus *fplus_ptr;
Event *this_event;
Event *db1;
double dcycs;
double now_dtime;
double prev_dtime;
double prerun_fcycles;
double fspeed_mult;
double fcycles_stop;
word32 ret;
word32 zip_speed_0tof, zip_speed_0tof_new;
int zip_en, zip_follow_cps;
int type;
int motor_on;
int iwm_1;
int iwm_25;
int limit_speed;
int apple35_sel;
int fast, zip_speed, faster_than_28, unl_speed;
int this_type;
int isnextframe=0;
zip_speed_0tof = g_moremem.g_zipgs_reg_c05a & 0xf0;
while(!r_sim65816.should_emulator_terminate())
{
fflush(stdout);
r_sim65816.check_update_emulator_runtime_config();
// OG Disabling control panel
#ifndef ACTIVEGS
extern int g_config_control_panel;
if(g_config_control_panel) {
config_control_panel();
}
#endif
if(g_moremem.g_irq_pending && !(g_sim65816.engine.psr & 0x4)) {
irq_printf("taking an irq!\n");
take_irq(0);
/* Interrupt! */
}
motor_on = g_iwm.g_iwm_motor_on;
limit_speed = g_sim65816.get_limit_speed();
apple35_sel = g_moremem.g_c031_disk35 & 0x40;
zip_en = ((g_moremem.g_zipgs_reg_c05b & 0x10) == 0);
zip_follow_cps = ((g_moremem.g_zipgs_reg_c059 & 0x8) != 0);
zip_speed_0tof_new = g_moremem.g_zipgs_reg_c05a & 0xf0;
fast = (g_moremem.g_c036_val_speed & 0x80) || (zip_en && !zip_follow_cps);
// OG Make fast parameter public
g_sim65816.g_speed_fast = fast;
if(zip_speed_0tof_new != zip_speed_0tof) {
zip_speed_0tof = zip_speed_0tof_new;
setup_zip_speeds();
}
iwm_1 = motor_on && !apple35_sel &&
(g_moremem.g_c036_val_speed & 0x4) &&
(g_iwm.g_slow_525_emul_wr || !g_iwm.g_fast_disk_emul);
iwm_25 = (motor_on && apple35_sel) && !g_iwm.g_fast_disk_emul;
faster_than_28 = fast && (!iwm_1 && !iwm_25) && zip_en &&
((limit_speed == 0) || (limit_speed == 3));
zip_speed = faster_than_28 &&
((zip_speed_0tof != 0) || (limit_speed == 3) ||
(g_moremem.g_zipgs_unlock >= 4) );
// OG unlimited speed should not be affected by zip.
// unl_speed = faster_than_28 && !zip_speed;
unl_speed = (limit_speed == 0) && faster_than_28;
if(unl_speed) {
/* use unlimited speed */
fspeed_mult = g_sim65816.g_projected_pmhz;
fplus_ptr = &g_sim65816.g_recip_projected_pmhz_unl;
} else if(zip_speed) {
fspeed_mult = g_sim65816.g_zip_pmhz;
fplus_ptr = &g_sim65816.g_recip_projected_pmhz_zip;
} else if(fast && !iwm_1 && !(limit_speed == 1)) {
fspeed_mult = DEFAULT_GS_SPEED;
fplus_ptr = &g_sim65816.g_recip_projected_pmhz_fast;
} else {
/* else run slow */
fspeed_mult = 1.0;
fplus_ptr = &g_sim65816.g_recip_projected_pmhz_slow;
}
g_sim65816.engine.fplus_ptr = fplus_ptr;
this_type = g_sim65816.g_event_start.next->type;
prerun_fcycles = g_sim65816.g_cur_dcycs - g_sim65816.g_last_vbl_dcycs;
g_sim65816.engine.fcycles = prerun_fcycles;
fcycles_stop = (g_sim65816.g_event_start.next->dcycs - g_sim65816.g_last_vbl_dcycs) +
0.001;
if(g_stepping) {
fcycles_stop = prerun_fcycles;
}
g_sim65816.g_fcycles_stop = fcycles_stop;
#if 0
printf("Enter g_sim65816.engine, fcycs: %f, stop: %f\n",
prerun_fcycles, fcycles_stop);
printf("g_sim65816.g_cur_dcycs: %f, last_vbl_dcyc: %f\n", g_cur_dcycs,
g_sim65816.g_last_vbl_dcycs);
#endif
g_sim65816.g_num_enter_engine++;
prev_dtime = get_dtime();
ret = enter_engine(&g_sim65816.engine);
now_dtime = get_dtime();
g_sim65816.g_cur_sim_dtime += (now_dtime - prev_dtime);
dcycs = g_sim65816.g_last_vbl_dcycs + (double)(g_sim65816.engine.fcycles);
g_sim65816.g_dadjcycs += (g_sim65816.engine.fcycles - prerun_fcycles) *
fspeed_mult;
#if 0
printf("...back, g_sim65816.engine.fcycles: %f, dcycs: %f\n",
(double)g_sim65816.engine.fcycles, dcycs);
#endif
g_sim65816.g_cur_dcycs = dcycs;
if(ret != 0) {
g_sim65816.g_engine_action++;
handle_action(ret);
}
if(g_sim65816.halt_sim == HALT_EVENT) {
g_sim65816.g_engine_halt_event++;
/* if we needed to stop to check for interrupts, */
/* clear halt */
g_sim65816.halt_sim = 0;
}
#if 0
if(!g_sim65816.g_testing && run_cycles < -2000000) {
halt_printf("run_cycles: %d, cycles: %d\n", run_cycles,
cycles);
printf("this_type: %05x\n", this_type);
printf("duff_cycles: %d\n", duff_cycles);
printf("start.next->rel_time: %d, type: %05x\n",
g_sim65816.g_event_start.next->rel_time,
g_sim65816.g_event_start.next->type);
}
#endif
this_event = g_sim65816.g_event_start.next;
while(dcycs >= this_event->dcycs) {
/* Pop this guy off of the queue */
g_sim65816.g_event_start.next = this_event->next;
type = this_event->type;
this_event->next = g_sim65816.g_event_free.next;
g_sim65816.g_event_free.next = this_event;
switch(type & 0xff) {
case EV_60HZ:
update_60hz(dcycs, now_dtime);
isnextframe=1;
break;
case EV_STOP:
printf("type: EV_STOP\n");
printf("next: %p, dcycs: %f\n",
g_sim65816.g_event_start.next, dcycs);
db1 = g_sim65816.g_event_start.next;
halt_printf("next.dcycs: %f\n", db1->dcycs);
break;
case EV_SCAN_INT:
g_sim65816.g_engine_scan_int++;
irq_printf("type: scan int\n");
do_scan_int(dcycs, type >> 8);
break;
case EV_DOC_INT:
g_sim65816.g_engine_doc_int++;
doc_handle_event(type >> 8, dcycs);
break;
case EV_SCC_ENABLE:
{
extern void scc_delayed_enable();
scc_delayed_enable();
}
break;
case EV_VBL_INT:
do_vbl_int();
break;
case EV_SCC:
do_scc_event(type >> 8, dcycs);
break;
case EV_VID_UPD:
{
/*
extern double last_vid_update_dcys; // OG
last_vid_update_dcys = this_event->dcycs;
*/
video_update_event_line(type >> 8);
}
break;
/*
// OG Added DelayWriteC023 Event
case EV_DELAY_WRITE_C023:
{
extern int g_c023_val;
printf("clearing c023 for line(%d)\n",type>>8);
g_moremem.g_c023_val = g_c023_val & 0xDF & 0x7F;
}
break;
*/
default:
printf("Unknown event: %d!\n", type);
x_exit(3);
break;
}
this_event = g_sim65816.g_event_start.next;
}
if(g_sim65816.g_event_start.next == 0) {
halt_printf("ERROR...run_prog, event_start.n=0!\n");
}
#if 0
if(!g_sim65816.g_testing && g_sim65816.g_event_start.next->rel_time > 2000000) {
printf("Z:start.next->rel_time: %d, duff_cycles: %d\n",
g_sim65816.g_event_start.next->rel_time, duff_cycles);
halt_printf("Zrun_cycles:%d, cycles:%d\n", run_cycles,
cycles);
show_all_events();
}
#endif
if (isnextframe)
{
isnextframe=0;
if (g_driver.x_handle_state!=NULL)
g_driver.x_handle_state();
else
g_savestate.handleState();
return 1;
}
if(g_sim65816.halt_sim != 0 && g_sim65816.halt_sim != HALT_EVENT)
{
break;
}
if(g_stepping)
{
break;
}
}
return 0; // quit
}
void
run_prog_shut()
{
if(!g_sim65816.g_testing) {
printf("leaving run_prog, g_sim65816.halt_sim:%d\n", g_sim65816.halt_sim);
}
x_auto_repeat_on(0);
}
void run_prog()
{
run_prog_init();
while(1)
{
int ret = run_prog_loop();
if (!ret)
break;
}
run_prog_shut();
}
void
add_irq(word32 irq_mask)
{
if(g_moremem.g_irq_pending & irq_mask) {
/* Already requested, just get out */
return;
}
g_moremem.g_irq_pending |= irq_mask;
set_halt(HALT_EVENT);
}
void
remove_irq(word32 irq_mask)
{
g_moremem.g_irq_pending = g_moremem.g_irq_pending & (~irq_mask);
}
void
take_irq(int is_it_brk)
{
word32 new_kpc;
word32 va;
irq_printf("Taking irq, at: %02x/%04x, psw: %02x, dcycs: %f\n",
g_sim65816.engine.kpc>>16, g_sim65816.engine.kpc & 0xffff, g_sim65816.engine.psr,
g_sim65816.g_cur_dcycs);
g_sim65816.g_num_irq++;
if(g_sim65816.g_wait_pending) {
/* step over WAI instruction */
g_sim65816.engine.kpc++;
g_sim65816.g_wait_pending = 0;
}
if(g_sim65816.engine.psr & 0x100) {
/* Emulation */
set_memory_c(g_sim65816.engine.stack, (g_sim65816.engine.kpc >> 8) & 0xff, 0);
g_sim65816.engine.stack = ((g_sim65816.engine.stack -1) & 0xff) + 0x100;
set_memory_c(g_sim65816.engine.stack, g_sim65816.engine.kpc & 0xff, 0);
g_sim65816.engine.stack = ((g_sim65816.engine.stack -1) & 0xff) + 0x100;
set_memory_c(g_sim65816.engine.stack,
(g_sim65816.engine.psr & 0xef)|(is_it_brk<<4),0);
/* Clear B bit in psr on stack */
g_sim65816.engine.stack = ((g_sim65816.engine.stack -1) & 0xff) + 0x100;
va = 0xfffffe;
if(g_moremem.g_c035_shadow_reg & 0x40) {
/* I/O shadowing off...use ram locs */
va = 0x00fffe;
}
} else {
/* native */
set_memory_c(g_sim65816.engine.stack, (g_sim65816.engine.kpc >> 16) & 0xff, 0);
g_sim65816.engine.stack = ((g_sim65816.engine.stack -1) & 0xffff);
set_memory_c(g_sim65816.engine.stack, (g_sim65816.engine.kpc >> 8) & 0xff, 0);
g_sim65816.engine.stack = ((g_sim65816.engine.stack -1) & 0xffff);
set_memory_c(g_sim65816.engine.stack, g_sim65816.engine.kpc & 0xff, 0);
g_sim65816.engine.stack = ((g_sim65816.engine.stack -1) & 0xffff);
set_memory_c(g_sim65816.engine.stack, g_sim65816.engine.psr & 0xff, 0);
g_sim65816.engine.stack = ((g_sim65816.engine.stack -1) & 0xffff);
if(is_it_brk) {
/* break */
va = 0xffffe6;
if(g_moremem.g_c035_shadow_reg & 0x40) {
va = 0xffe6;
}
} else {
/* irq */
va = 0xffffee;
if(g_moremem.g_c035_shadow_reg & 0x40) {
va = 0xffee;
}
}
}
new_kpc = get_memory_c(va, 0);
new_kpc = new_kpc + (get_memory_c(va+1, 0) << 8);
g_sim65816.engine.psr = ((g_sim65816.engine.psr & 0x1f3) | 0x4);
g_sim65816.engine.kpc = new_kpc;
HALT_ON(HALT_ON_IRQ, "Halting on IRQ\n");
}
void
show_dtime_array()
{
double dfirst_time;
double first_total_cycs;
int i;
int pos;
dfirst_time = 0.0;
first_total_cycs = 0.0;
for(i = 0; i < 60; i++) {
pos = (g_sim65816.g_vbl_index_count + i) % 60;
printf("%2d:%2d dt:%.5f adjc:%9.1f this_vbl:%.6f "
"exp:%.5f p:%2.2f ep:%2.2f\n",
i, pos,
g_sim65816.dtime_array[pos] - dfirst_time,
g_sim65816.g_dadjcycs_array[pos] - first_total_cycs,
g_sim65816.g_dtime_this_vbl_array[pos],
g_sim65816.g_dtime_exp_array[pos] - dfirst_time,
g_sim65816.g_dtime_pmhz_array[pos],
g_sim65816.g_dtime_eff_pmhz_array[pos]);
dfirst_time = g_sim65816.dtime_array[pos];
first_total_cycs = g_sim65816.g_dadjcycs_array[pos];
}
}
void
update_60hz(double dcycs, double dtime_now)
{
register word32 end_time;
char status_buf[1024];
char sim_mhz_buf[128];
char total_mhz_buf[128];
const char *sim_mhz_ptr, *total_mhz_ptr;
const char *code_str1, *code_str2/*,*sp_str*/;
double eff_pmhz;
double planned_dcycs;
double predicted_pmhz;
double recip_predicted_pmhz;
double dtime_this_vbl_sim;
double dtime_diff_1sec;
double dratio;
double dtime_till_expected;
double dtime_diff;
double dtime_this_vbl;
double dadjcycs_this_vbl;
double dadj_cycles_1sec;
double dtmp1, dtmp2, dtmp3, dtmp4, dtmp5;
double dnatcycs_1sec;
int tmp;
int doit_3_persec;
int cur_vbl_index;
int prev_vbl_index;
g_sim65816.g_vbl_count++;
/*
if (g_driver.x_post_event)
g_driver.x_post_event("60hz");
*/
/* NOTE: this event is defined to occur before line 0 */
/* It's actually happening at the start of the border for line (-1) */
/* All other timings should be adjusted for this */
irq_printf("vbl_60hz: vbl: %d, dcycs: %f, last_vbl_dcycs: %f\n",
g_sim65816.g_vbl_count, dcycs, g_sim65816.g_last_vbl_dcycs);
planned_dcycs = DCYCS_IN_16MS;
g_sim65816.g_last_vbl_dcycs = g_sim65816.g_last_vbl_dcycs + planned_dcycs;
add_event_entry(g_sim65816.g_last_vbl_dcycs + planned_dcycs, EV_60HZ);
check_for_one_event_type(EV_60HZ);
cur_vbl_index = g_sim65816.g_vbl_index_count;
/* figure out dtime spent running SIM, not all the overhead */
dtime_this_vbl_sim = g_sim65816.g_cur_sim_dtime;
g_sim65816.g_cur_sim_dtime = 0.0;
g_sim65816.g_sim_sum = g_sim65816.g_sim_sum - g_sim65816.sim_time[cur_vbl_index] + dtime_this_vbl_sim;
g_sim65816.sim_time[cur_vbl_index] = dtime_this_vbl_sim;
dadj_cycles_1sec = g_sim65816.g_dadjcycs - g_sim65816.g_dadjcycs_array[cur_vbl_index];
/* dtime_diff_1sec is dtime total spent over the last 60 ticks */
dtime_diff_1sec = dtime_now - g_sim65816.dtime_array[cur_vbl_index];
g_sim65816.dtime_array[cur_vbl_index] = dtime_now;
g_sim65816.g_dadjcycs_array[cur_vbl_index] = g_sim65816.g_dadjcycs;
prev_vbl_index = cur_vbl_index;
cur_vbl_index = prev_vbl_index + 1;
if(cur_vbl_index >= 60) {
cur_vbl_index = 0;
}
g_sim65816.g_vbl_index_count = cur_vbl_index;
GET_ITIMER(end_time);
g_sim65816.g_dnatcycs_1sec += (double)(end_time - g_sim65816.g_natcycs_lastvbl);
g_sim65816.g_natcycs_lastvbl = end_time;
if(prev_vbl_index == 0) {
if(g_sim65816.g_sim_sum < (1.0/250.0)) {
sim_mhz_ptr = "???";
g_sim65816.g_sim_mhz = 250.0;
} else {
g_sim65816.g_sim_mhz = (dadj_cycles_1sec / g_sim65816.g_sim_sum) /
(1000.0*1000.0);
sprintf(sim_mhz_buf, "%6.2f", g_sim65816.g_sim_mhz);
sim_mhz_ptr = sim_mhz_buf;
}
if(dtime_diff_1sec < (1.0/250.0)) {
total_mhz_ptr = "???";
} else {
sprintf(total_mhz_buf, "%6.2f",
(dadj_cycles_1sec / dtime_diff_1sec) /
(1000000.0));
total_mhz_ptr = total_mhz_buf;
}
x_update_info(total_mhz_ptr);
if(g_sim65816.g_video_line_update_interval == 0) {
if(g_sim65816.g_sim_mhz > 12.0) {
/* just set video line_ref_amt to 1 */
g_sim65816.g_line_ref_amt = 1;
} else if(g_sim65816.g_line_ref_amt == 1 && g_sim65816.g_sim_mhz < 4.0) {
g_sim65816.g_line_ref_amt = 8;
}
} else {
g_sim65816.g_line_ref_amt = g_sim65816.g_video_line_update_interval;
}
if(g_sim65816.g_dnatcycs_1sec < (1000.0*1000.0)) {
/* make it so large that all %'s become 0 */
g_sim65816.g_dnatcycs_1sec = 800.0*1000.0*1000.0*1000.0;
}
dnatcycs_1sec = g_sim65816.g_dnatcycs_1sec / 100.0; /* eff mult by 100 */
dtmp2 = (double)(g_video.g_cycs_in_check_input) / dnatcycs_1sec;
dtmp3 = (double)(g_video.g_cycs_in_refresh_line) / dnatcycs_1sec;
dtmp4 = (double)(g_video.g_cycs_in_refresh_ximage) / dnatcycs_1sec;
sprintf(status_buf, "xfer:%08x, %5.1f ref_amt:%d "
"ch_in:%4.1f%% ref_l:%4.1f%% ref_x:%4.1f%%",
g_refresh_bytes_xfer, g_sim65816.g_dnatcycs_1sec/(1000.0*1000.0),
g_sim65816.g_line_ref_amt, dtmp2, dtmp3, dtmp4);
video_update_status_line(1, status_buf);
sprintf(status_buf, "Ints:%3d I/O:%4dK BRK:%3d COP:%2d "
"Eng:%3d act:%3d hev:%3d esi:%3d edi:%3d",
g_sim65816.g_num_irq, g_sim65816.g_io_amt>>10, g_sim65816.g_num_brk, g_sim65816.g_num_cop,
g_sim65816.g_num_enter_engine, g_sim65816.g_engine_action,
g_sim65816.g_engine_halt_event, g_sim65816.g_engine_scan_int,
g_sim65816.g_engine_doc_int);
video_update_status_line(2, status_buf);
dtmp1 = (double)(g_cycs_in_sound1) / dnatcycs_1sec;
dtmp2 = (double)(g_cycs_in_sound2) / dnatcycs_1sec;
dtmp3 = (double)(g_cycs_in_sound3) / dnatcycs_1sec;
dtmp4 = (double)(g_cycs_in_start_sound) / dnatcycs_1sec;
dtmp5 = (double)(g_cycs_in_est_sound) / dnatcycs_1sec;
sprintf(status_buf, "snd1:%4.1f%%, 2:%4.1f%%, "
"3:%4.1f%%, st:%4.1f%% est:%4.1f%% %4.2f",
dtmp1, dtmp2, dtmp3, dtmp4, dtmp5, g_fvoices);
video_update_status_line(3, status_buf);
code_str1 = "";
code_str2 = "";
if(g_sim65816.g_code_yellow) {
code_str1 = "Code: Yellow";
code_str2 = "Emulated system state suspect, save work";
}
if(g_sim65816.g_code_red) {
code_str1 = "Code: RED";
code_str2 = "Emulated system state probably corrupt";
}
sprintf(status_buf, "snd_plays:%4d, doc_ev:%4d, st_snd:%4d "
"snd_parms: %4d %s",
g_num_snd_plays, g_num_doc_events, g_num_start_sounds,
g_num_recalc_snd_parms, code_str1);
video_update_status_line(4, status_buf);
draw_iwm_status(5, status_buf);
sprintf(status_buf, "KEGS v%-6s BUILD v%s "
"Press F4 for Config Menu %s",
g_kegs_version_str, g_kegs_version_build,code_str2);
video_update_status_line(6, status_buf);
g_video.g_status_refresh_needed = 1;
g_sim65816.g_num_irq = 0;
g_sim65816.g_num_brk = 0;
g_sim65816.g_num_cop = 0;
g_sim65816.g_num_enter_engine = 0;
g_sim65816.g_io_amt = 0;
g_sim65816.g_engine_action = 0;
g_sim65816.g_engine_halt_event = 0;
g_sim65816.g_engine_scan_int = 0;
g_sim65816.g_engine_doc_int = 0;
g_video.g_cycs_in_40col = 0;
g_video.g_cycs_in_xredraw = 0;
g_video.g_cycs_in_check_input = 0;
g_video.g_cycs_in_refresh_line = 0;
g_video.g_cycs_in_refresh_ximage = 0;
g_iwm.g_cycs_in_io_read = 0;
g_cycs_in_sound1 = 0;
g_cycs_in_sound2 = 0;
g_cycs_in_sound3 = 0;
g_cycs_in_sound4 = 0;
g_cycs_in_start_sound = 0;
g_cycs_in_est_sound = 0;
g_sim65816.g_dnatcycs_1sec = 0.0;
g_refresh_bytes_xfer = 0;
g_num_snd_plays = 0;
g_num_doc_events = 0;
g_num_start_sounds = 0;
g_num_scan_osc = 0;
g_num_recalc_snd_parms = 0;
g_fvoices = (float)0.0;
}
dtime_this_vbl = dtime_now - g_sim65816.g_dtime_last_vbl;
if(dtime_this_vbl < 0.001) {
dtime_this_vbl = 0.001;
}
g_sim65816.g_dtime_last_vbl = dtime_now;
dadjcycs_this_vbl = g_sim65816.g_dadjcycs - g_sim65816.g_last_vbl_dadjcycs;
g_sim65816.g_last_vbl_dadjcycs = g_sim65816.g_dadjcycs;
g_sim65816.g_dtime_expected += (1.0/60.0);
eff_pmhz = ((dadjcycs_this_vbl) / (dtime_this_vbl)) /
DCYCS_1_MHZ;
/* using eff_pmhz, predict how many cycles can be run by */
/* g_sim65816.g_dtime_expected */
dtime_till_expected = g_sim65816.g_dtime_expected - dtime_now;
dratio = 60.0 * dtime_till_expected;
predicted_pmhz = eff_pmhz * dratio;
if(! (predicted_pmhz < (1.4 * g_sim65816.g_projected_pmhz))) {
predicted_pmhz = 1.4 * g_sim65816.g_projected_pmhz;
}
if(! (predicted_pmhz > (0.7 * g_sim65816.g_projected_pmhz))) {
predicted_pmhz = 0.7 * g_sim65816.g_projected_pmhz;
}
if(!(predicted_pmhz >= 1.0)) {
irq_printf("predicted: %f, setting to 1.0\n", predicted_pmhz);
predicted_pmhz = 1.0;
}
if(!(predicted_pmhz < 250.0)) {
irq_printf("predicted: %f, setting to 250.0\n", predicted_pmhz);
predicted_pmhz = 250.0;
}
recip_predicted_pmhz = 1.0/predicted_pmhz;
g_sim65816.g_projected_pmhz = predicted_pmhz;
g_sim65816.g_recip_projected_pmhz_unl.plus_1 = 1.0*recip_predicted_pmhz;
g_sim65816.g_recip_projected_pmhz_unl.plus_2 = 2.0*recip_predicted_pmhz;
g_sim65816.g_recip_projected_pmhz_unl.plus_3 = 3.0*recip_predicted_pmhz;
g_sim65816.g_recip_projected_pmhz_unl.plus_x_minus_1 = 1.01 - recip_predicted_pmhz;
if(dtime_till_expected < -0.125) {
/* If we were way off, get back on track */
/* this happens because our sim took much longer than */
/* expected, so we're going to skip some VBL */
irq_printf("adj1: dtexp:%f, dt_new:%f\n",
g_sim65816.g_dtime_expected, dtime_now);
dtime_diff = -dtime_till_expected;
irq_printf("dtime_till_exp: %f, dtime_diff: %f, dcycs: %f\n",
dtime_till_expected, dtime_diff, dcycs);
g_sim65816.g_dtime_expected += dtime_diff;
}
double w = dtime_till_expected - (1.0/60.0); // OG was 3/60 !!!
#ifdef USE_RASTER
x_wait_for_last_refresh(w);
#else
if(w>0.0)
{
/* we're running fast, usleep */
double s = get_dtime();
if (w>0.01)
micro_sleep(w);
// sur windows le micro_sleep est l<>g<EFBFBD>rement en retard!
while( get_dtime() < s+w);
#ifdef ENABLE_GRAPH
/*
double d = get_dtime() - s;
double d2 = d - w;
g_graph.add_graph(3,(float)d,g_sim65816.g_vbl_count);
g_graph.add_graph(2,(float)w,g_sim65816.g_vbl_count);
*/
#endif
}
#endif
CHANGE_BORDER(0,0xFF0000);
CHANGE_BORDER(2,0xFF0000);
g_sim65816.g_dtime_this_vbl_array[prev_vbl_index] = dtime_this_vbl;
g_sim65816.g_dtime_exp_array[prev_vbl_index] = g_sim65816.g_dtime_expected;
g_sim65816.g_dtime_pmhz_array[prev_vbl_index] = predicted_pmhz;
g_sim65816.g_dtime_eff_pmhz_array[prev_vbl_index] = eff_pmhz;
if(g_moremem.g_c041_val & C041_EN_VBL_INTS) {
add_event_vbl();
}
g_sim65816.g_25sec_cntr++;
if(g_sim65816.g_25sec_cntr >= 16) {
g_sim65816.g_25sec_cntr = 0;
if(g_moremem.g_c041_val & C041_EN_25SEC_INTS) {
add_irq(IRQ_PENDING_C046_25SEC);
g_moremem.g_c046_val |= 0x10;
irq_printf("Setting c046 .25 sec int, g_irq_pend:%d\n",
g_moremem.g_irq_pending);
}
}
g_sim65816.g_1sec_cntr++;
if(g_sim65816.g_1sec_cntr >= 60) {
g_sim65816.g_1sec_cntr = 0;
tmp = g_moremem.g_c023_val;
tmp |= 0x40; /* set 1sec int */
if(tmp & 0x04) {
tmp |= 0x80;
add_irq(IRQ_PENDING_C023_1SEC);
irq_printf("Setting c023 to %02x irq_pend: %d\n",
tmp, g_moremem.g_irq_pending);
}
irq_printf("1s irq: %X new: %X\n",g_moremem.g_c023_val,tmp);
g_moremem.g_c023_val = tmp;
}
/*
{
extern int g_delayed_c023_val;
if (g_delayed_c023_val)
{
g_moremem.g_c023_val = g_c023_val & 0xDF;
g_delayed_c023_val = 0;
printf("clearing c023 val\n");
}
}
*/
if(!g_sim65816.g_scan_int_events) {
check_scan_line_int(dcycs, 0);
}
doit_3_persec = 0;
if(g_sim65816.g_config_iwm_vbl_count > 0) {
g_sim65816.g_config_iwm_vbl_count--;
} else {
g_sim65816.g_config_iwm_vbl_count = 20;
doit_3_persec = 1;
}
iwm_vbl_update(doit_3_persec);
// OG Disabling config update
#ifndef ACTIVEGS
config_vbl_update(doit_3_persec);
#else
// OG Added disk update
{
extern void checkImages();
checkImages();
}
#endif
/*
#if 0 //def USE_RASTER
static double lastraster = 0;
double curraster = get_dtime();
double target = lastraster+1/60.0;
double wait = target - curraster;
// attend le rendu de la frame pr<70>c<EFBFBD>dente (ou la synchro)
x_wait_for_vbl();
curraster = get_dtime();
double delay = curraster - lastraster;
double frame = 1/delay;
#ifdef ENABLE_GRAPH
// g_graph.add_graph(2,frame,g_sim65816.g_vbl_count);
#endif
lastraster = curraster;
#endif
*/
g_video_offscreen_has_been_modified = 0;
CHANGE_BORDER(0,0xFF00FF);
CHANGE_BORDER(2,0xFF00FF);
video_update();
DRAW_BORDER();
CHANGE_BORDER(0,0);
CHANGE_BORDER(2,0);
#ifdef USE_RASTER
x_wait_for_vbl();
#endif
refresh_video(0);
CHANGE_BORDER(0,0x888888);
CHANGE_BORDER(2,0x888888);
sound_update(dcycs);
clock_update();
scc_update(dcycs);
paddle_update_buttons();
CHANGE_BORDER(0,0);
CHANGE_BORDER(2,0xFF0000);
}
void
do_vbl_int()
{
if(g_moremem.g_c041_val & C041_EN_VBL_INTS) {
g_moremem.g_c046_val |= 0x08;
add_irq(IRQ_PENDING_C046_VBL);
irq_printf("Setting c046 vbl_int_status to 1, irq_pend: %d\n",
g_moremem.g_irq_pending);
}
}
void
do_scan_int(double dcycs, int line)
{
int c023_val;
g_sim65816.g_scan_int_events = 0;
c023_val = g_moremem.g_c023_val;
if(c023_val & 0x20) {
halt_printf("c023 scan_int and another on line %03x\n", line);
}
/* make sure scan int is still enabled for this line */
if((g_slow_memory_ptr[0x19d00 + line] & 0x40) &&
(g_video.g_cur_a2_stat & ALL_STAT_SUPER_HIRES)) {
/* valid interrupt, do it */
c023_val |= 0xa0; /* vgc_int and scan_int */
if(c023_val & 0x02) {
add_irq(IRQ_PENDING_C023_SCAN);
irq_printf("Setting c023 to %02x, irq_pend: %d\n", c023_val, g_moremem.g_irq_pending);
}
g_moremem.g_c023_val = c023_val;
HALT_ON(HALT_ON_SCAN_INT, "In do_scan_int\n");
} else {
/* scan int bit cleared on scan line control byte */
/* look for next line, if any */
check_scan_line_int(dcycs, line+1);
}
}
void
check_scan_line_int(double dcycs, int cur_video_line)
{
int delay;
int start;
int line;
int i;
/* Called during VBL interrupt phase */
if(!(g_video.g_cur_a2_stat & ALL_STAT_SUPER_HIRES)) {
return;
}
if(g_moremem.g_c023_val & 0x20) {
/* don't check for any more */
return;
}
start = cur_video_line;
if(start < 0) {
halt_printf("check_scan_line_int: cur_video_line: %d\n",
cur_video_line);
start = 0;
}
for(line = start; line < 200; line++) {
i = line;
if(i < 0 || i >= 200) {
halt_printf("check_new_scan_int:i:%d, line:%d, st:%d\n",
i, line, start);
i = 0;
}
if(g_slow_memory_ptr[0x19d00+i] & 0x40) {
//printf("Adding scan_int for line %d\n", i);
delay = (int)( (DCYCS_IN_16MS/262.0) * ((double)line) );
add_event_entry(g_sim65816.g_last_vbl_dcycs + delay, EV_SCAN_INT +
(line << 8));
//add_event_entry(g_sim65816.g_last_vbl_dcycs + delay + (DCYCS_IN_16MS/262.0)*4/5 , EV_DELAY_WRITE_C023+ (line << 8));
g_sim65816.g_scan_int_events = 1;
check_for_one_event_type(EV_SCAN_INT);
break;
}
}
}
void
check_for_new_scan_int(double dcycs)
{
int cur_video_line;
cur_video_line = get_lines_since_vbl(dcycs) >> 8;
check_scan_line_int(dcycs, cur_video_line);
}
void
init_reg()
{
g_sim65816.engine.acc = 0;
g_sim65816.engine.xreg = 0;
g_sim65816.engine.yreg = 0;
g_sim65816.engine.stack = 0x1ff;
g_sim65816.engine.direct = 0;
g_sim65816.engine.psr = 0x134;
g_sim65816.engine.fplus_ptr = 0;
}
void
handle_action(word32 ret)
{
int type;
type = EXTRU(ret,3,4);
switch(type) {
case RET_BREAK:
do_break(ret & 0xff);
break;
case RET_COP:
do_cop(ret & 0xff);
break;
#if 0
case RET_MVN:
do_mvn(ret & 0xffff);
break;
#endif
case RET_C700:
do_c700(ret);
break;
case RET_C70A:
do_c70a(ret);
break;
case RET_C70D:
do_c70d(ret);
break;
#if 0
case RET_ADD_DEC_8:
do_add_dec_8(ret);
break;
case RET_ADD_DEC_16:
do_add_dec_16(ret);
break;
#endif
case RET_IRQ:
irq_printf("Special fast IRQ response. irq_pending: %x\n",
g_moremem.g_irq_pending);
break;
case RET_WDM:
do_wdm(ret & 0xff);
break;
case RET_STP:
do_stp();
break;
default:
halt_printf("Unknown special action: %08x!\n", ret);
break;
}
}
#if 0
void
do_add_dec_8(word32 ret)
{
halt_printf("do_add_dec_8 called, ret: %08x\n", ret);
}
void
do_add_dec_16(word32 ret)
{
halt_printf("do_add_dec_16 called, ret: %08x\n", ret);
}
#endif
void
do_break(word32 ret)
{
if(!g_sim65816.g_testing) {
printf("I think I got a break, second byte: %02x!\n", ret);
printf("kpc: %06x\n", g_sim65816.engine.kpc);
}
halt_printf("do_break, kpc: %06x\n", g_sim65816.engine.kpc);
g_sim65816.enter_debug = 1;
}
void
do_cop(word32 ret)
{
halt_printf("COP instr %02x!\n", ret);
fflush(stdout);
}
#if 0
void
do_mvn(word32 banks)
{
int src_bank, dest_bank;
int dest, src;
int num;
int i;
int val;
halt_printf("In MVN...just quitting\n");
return;
printf("MVN instr with %04x, cycles: %08x\n", banks, g_sim65816.engine.cycles);
src_bank = banks >> 8;
dest_bank = banks & 0xff;
printf("psr: %03x\n", g_sim65816.engine.psr);
if((g_sim65816.engine.psr & 0x30) != 0) {
halt_printf("MVN in non-native mode unimplemented!\n");
}
dest = dest_bank << 16 | g_sim65816.engine.yreg;
src = src_bank << 16 | g_sim65816.engine.xreg;
num = g_sim65816.engine.acc;
printf("Moving %08x+1 bytes from %08x to %08x\n", num, src, dest);
for(i = 0; i <= num; i++) {
val = get_memory_c(src, 0);
set_memory_c(dest, val, 0);
src = (src_bank << 16) | ((src + 1) & 0xffff);
dest = (dest_bank << 16) | ((dest + 1) & 0xffff);
}
g_sim65816.engine.dbank = dest_bank;
g_sim65816.engine.acc = 0xffff;
g_sim65816.engine.yreg = dest & 0xffff;
g_sim65816.engine.xreg = src & 0xffff;
g_sim65816.engine.kpc = (engine.kpc + 3);
printf("move done. db: %02x, acc: %04x, y: %04x, x: %04x, num: %08x\n",
g_sim65816.engine.dbank, engine.acc, engine.yreg, engine.xreg, num);
}
#endif
void
do_wdm(word32 arg)
{
switch(arg) {
case 0x8d: /* Bouncin Ferno does WDM 8d */
break;
default:
halt_printf("do_wdm: %02x!\n", arg);
break;
}
}
void
do_wai()
{
halt_printf("do_wai!\n");
}
void
do_stp()
{
if(!g_sim65816.g_stp_pending) {
g_sim65816.g_stp_pending = 1;
halt_printf("Hit STP instruction at: %06x, press RESET to "
"continue\n", g_sim65816.engine.kpc);
}
}
void
size_fail(int val, word32 v1, word32 v2)
{
halt_printf("Size failure, val: %08x, %08x %08x\n", val, v1, v2);
}
int
fatal_printf(const char *fmt, ...)
{
va_list ap;
int ret;
va_start(ap, fmt);
if(g_fatal_log < 0) {
g_fatal_log = 0;
}
ret = kegs_vprintf(fmt, ap);
va_end(ap);
return ret;
}
int
kegs_vprintf(const char *fmt, va_list ap)
{
char *bufptr, *buf2ptr;
int len;
int ret;
bufptr = (char*)malloc(4096); // OG Added Cast
ret = vsnprintf(bufptr, 4090, fmt, ap);
// OG Display warning
printf("Warning:%s",bufptr);
len = strlen(bufptr);
if(g_fatal_log >= 0 && g_fatal_log < MAX_FATAL_LOGS) {
buf2ptr = (char*)malloc(len+1); // OG Added Cast
memcpy(buf2ptr, bufptr, len+1);
g_fatal_log_strs[g_fatal_log++] = buf2ptr;
}
must_write(1, bufptr, len);
if(g_debug_file_fd >= 0) {
must_write(g_debug_file_fd, bufptr, len);
}
free(bufptr);
return ret;
}
void
must_write(int fd, char *bufptr, int len)
{
int ret;
while(len > 0) {
ret = write(fd, bufptr, len);
if(ret >= 0) {
len -= ret;
bufptr += ret;
} else if(errno != EAGAIN && errno != EINTR) {
return; // just get out
}
}
}
void
clear_fatal_logs()
{
int i;
for(i = 0; i < g_fatal_log; i++) {
free(g_fatal_log_strs[i]);
g_fatal_log_strs[i] = 0;
}
g_fatal_log = -1;
}
char *
kegs_malloc_str(const char *in_str)
{
char *str;
size_t len = strlen(in_str) + 1;
str = (char*)malloc(len); // OG Added cast
memcpy(str, in_str, len);
return str;
}
enum speedenum s_sim65816:: set_limit_speed(enum speedenum _speed)
{
extern unsigned char transwarpcode[][32];
if ( (_speed<0) || (_speed>=SPEED_ENUMSIZE) )
_speed = SPEED_GS;
if (_speed == SPEED_ZIP || _speed ==SPEED_UNLIMITED)
{
// enable transwarp hardware
transwarpcode[0][0]='T';
}
else
{
// disable transwarp hardware
transwarpcode[0][0]=0;
}
x_refresh_panel(PANEL_SPEED|PANEL_RUNTIME);
printf("speed:%d\n",_speed);
g_limit_speed = _speed;
return _speed;
}
void serialize_engine(Engine_reg& engine)
{
int fpp = -1;
if (engine.fplus_ptr == &g_sim65816.g_recip_projected_pmhz_unl)
fpp = 0;
else
if (engine.fplus_ptr == &g_sim65816.g_recip_projected_pmhz_zip)
fpp = 1;
else
if (engine.fplus_ptr == &g_sim65816.g_recip_projected_pmhz_fast)
fpp = 2;
else
// if (engine.fplus_ptr == &g_sim65816.g_recip_projected_pmhz_slow)
fpp = 3;
engine.fplus_ptr = (Fplus*)fpp;
}
void unserialize_engine(Engine_reg& engine)
{
intptr_t fpp = (intptr_t)engine.fplus_ptr;
if (fpp==0)
engine.fplus_ptr = &g_sim65816.g_recip_projected_pmhz_unl;
else
if (fpp==1)
engine.fplus_ptr = &g_sim65816.g_recip_projected_pmhz_zip;
else
if (fpp==2)
engine.fplus_ptr =&g_sim65816.g_recip_projected_pmhz_fast;
else
// if (fpp ==3)
engine.fplus_ptr = &g_sim65816.g_recip_projected_pmhz_slow;
}
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