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various modifications

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This commit is contained in:
ekeeke31 2008-10-12 19:56:35 +00:00
parent 7a28802085
commit 41ffdefb1d
12 changed files with 55 additions and 35 deletions
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14
history.txt
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@ -10,18 +10,24 @@ CURRENT:
- YM2612(MAME): improved Detune overflow accuracy, fix very high frequency sounds in many games
- YM2612(MAME): fixed registers 0x20-0x26 Reset state, fix intro music in "B.O.B"
- YM2612(MAME): removed previous fix with KEY ON, fix "Flamethrower" sound effect in "Alien 3"
- adjusted HCounter values, fix line flickering in "Sonic 3D" bonus stage
- re-enabled Z80 banked access to WRAM, fix hang-up in "Mamono Hunter Youko"
- modified JCART emulation, fix corrupted tracks logo in "Micro Machines 2"
- adjusted HCounter values, fixes line flickering in "Sonic 3D" bonus stage
- adjusted VINT timing, fixes hang-up in "V.R Troopers"
- improved HBLANK flag accuracy, fixes line flickering in "Gouketsuji Ichizoku"
- re-enabled Z80 banked access to WRAM, fixes hang-up in "Mamono Hunter Youko"
- modified JCART emulation, fixes corrupted tracks logo in "Micro Machines 2"
[NGC/Wii]
- now use fixed libsamplerate setting in "HQ YM2612" mode
- remove unused libsamplerate settings in "HQ YM2612" mode
- implemented menu fast scrolling with the Wiimote D-PAD
- fixed config file incompatibilities between Gamecube and Wii versions
- re-enabled texture filtering in H40 original mode when overscan is emulated: fix screen scroll tearing
- added Shay Green's NTSC Filters support
[NGC]
- added proper 480p menu detection for NTSC Gamecube users
- now prevents FAT automatic operations if no SDCARD is inserted
26/08/2008:

6
source/ngc/config.c
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@ -7,9 +7,12 @@
#define CONFIG_VERSION "GENPLUS 1.2.6 "
t_config config;
bool use_FAT;
void config_save()
{
if (!use_FAT) return;
/* first check if directory exist */
DIR_ITER *dir = diropen("/genplus");
if (dir == NULL) mkdir("/genplus",S_IRWXU);
@ -27,13 +30,12 @@ void config_save()
void config_load()
{
char version[15];
/* open file for writing */
FILE *fp = fopen("/genplus/genplus.ini", "rb");
if (fp == NULL) return;
/* read version */
char version[15];
fread(version, 15, 1, fp);
fclose(fp);
if (strcmp(version,CONFIG_VERSION)) return;

1
source/ngc/config.h
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@ -41,6 +41,7 @@ extern t_config config;
extern void config_save();
extern void config_load();
extern void set_config_defaults(void);
extern bool use_FAT;
#endif /* _CONFIG_H_ */

9
source/ngc/gui/menu.c
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@ -146,7 +146,9 @@ void soundmenu ()
sprintf (items[1], "FM Volume: %1.2f", config.fm_preamp);
sprintf (items[2], "Volume Boost: %dX", config.boost);
sprintf (items[3], "LowPass Filter: %s", config.filter ? " ON":"OFF");
sprintf (items[4], "HQ YM2612: %s", config.hq_fm ? " ON":"OFF");
if (config.hq_fm == 0) sprintf (items[4], "HQ YM2612: OFF");
else if ((config.hq_fm == 1) || config.fm_core) sprintf (items[4], "HQ YM2612: LINEAR");
else sprintf (items[4], "HQ YM2612: SINC");
sprintf (items[5], "FM core: %s", config.fm_core ? "GENS" : "MAME");
ret = domenu (&items[0], count, 1);
@ -178,7 +180,8 @@ void soundmenu ()
break;
case 4:
config.hq_fm ^= 1;
config.hq_fm ++;
if ((config.hq_fm>2)||(config.fm_core && (config.hq_fm>1))) config.hq_fm = 0;
if (genromsize)
{
audio_init(48000);
@ -328,7 +331,7 @@ void dispmenu ()
if (config.tv_mode == 0) sprintf (items[2], "TV Mode: 60HZ");
else if (config.tv_mode == 1) sprintf (items[2], "TV Mode: 50HZ");
else sprintf (items[2], "TV Mode: 50/60HZ");
sprintf (items[3], "Texture Filter: %s", config.filtering ? " ON" : "OFF");
sprintf (items[3], "GX Filter: %s", config.filtering ? " ON" : "OFF");
if (config.ntsc == 1) sprintf (items[4], "NTSC Filter: COMPOSITE");
else if (config.ntsc == 2) sprintf (items[4], "NTSC Filter: S-VIDEO");
else if (config.ntsc == 3) sprintf (items[4], "NTSC Filter: RGB");

2
source/ngc/history.c
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@ -15,6 +15,8 @@ t_history history;
void history_save()
{
if (!use_FAT) return;
/* first check if directory exist */
DIR_ITER *dir = diropen("/genplus");
if (dir == NULL) mkdir("/genplus",S_IRWXU);

2
source/ngc/memfile.c
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@ -85,6 +85,8 @@ static int SD_ManageFile(char *filename, int direction, int filetype)
int done = 0;
int filesize;
if (!use_FAT) return 0;
/* first check if directory exist */
DIR_ITER *dir = diropen("/genplus/saves");
if (dir == NULL) mkdir("/genplus/saves",S_IRWXU);

3
source/ngc/ngc.c
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@ -125,7 +125,8 @@ int main (int argc, char *argv[])
#endif
/* Initialize SDCARD Interface (LibFAT) */
fatInitDefault();
use_FAT = 0;
if (fatInitDefault() == true) use_FAT = 1;
/* Restore User Configuration */
set_config_defaults();

8
source/render.c
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@ -647,7 +647,7 @@ void render_line(int line, uint8 odd_frame)
/* vertical borders or display OFF */
if ((line >= bitmap.viewport.h) || (!(reg[1] & 0x40)))
{
memset(&lb[0x20], 0x40 | border, width);
memset(&lb[0x20], 0x40, width);
}
else
{
@ -693,14 +693,14 @@ void render_line(int line, uint8 odd_frame)
}
/* Mode 4 feature only (unemulated, no games rely on this) */
/*if(!(reg[1] & 0x04) && (reg[0] & 0x20)) memset(&lb[0x20], 0x40 | border, 0x08);*/
/*if(!(reg[1] & 0x04) && (reg[0] & 0x20)) memset(&lb[0x20], 0x40, 0x08);*/
}
/* horizontal borders */
if (config.overscan)
{
memset(&lb[0x20 - bitmap.viewport.x], 0x40 | border, bitmap.viewport.x);
memset(&lb[0x20 + bitmap.viewport.w], 0x40 | border, bitmap.viewport.x);
memset(&lb[0x20 - bitmap.viewport.x], 0x40, bitmap.viewport.x);
memset(&lb[0x20 + bitmap.viewport.w], 0x40, bitmap.viewport.x);
width += 2 * bitmap.viewport.x;
}

9
source/sound/sound.c
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@ -24,6 +24,9 @@
#include "shared.h"
#include "samplerate.h"
#define CLOCK_NTSC 53693175
#define CLOCK_PAL 53203424
/* generic functions */
int (*_YM2612_Write)(unsigned char adr, unsigned char data);
int (*_YM2612_Read)(void);
@ -91,8 +94,8 @@ static inline void psg_update()
void sound_init(int rate)
{
double vclk = Master_Clock / 7.0; /* 68000 and YM2612 clock */
double zclk = Master_Clock / 15.0; /* Z80 and SN76489 clock */
double vclk = (vdp_pal ? (double)CLOCK_PAL : (double)CLOCK_NTSC) / 7.0; /* 68000 and YM2612 clock */
double zclk = (vdp_pal ? (double)CLOCK_PAL : (double)CLOCK_NTSC) / 15.0; /* Z80 and SN76489 clock */
/* cycle-accurate FM samples */
if (config.hq_fm && !config.fm_core)
@ -164,7 +167,7 @@ void sound_update(void)
}
/* samplerate conversion */
src_simple (&src_data, svp ? SRC_LINEAR : SRC_SINC_FASTEST, 2);
src_simple (&src_data, (config.hq_fm&1) ? SRC_LINEAR : SRC_SINC_FASTEST, 2);
/* this is basically libsamplerate "src_float_to_int_array" function, adapted to interlace samples */
len = snd.buffer_size;

25
source/system.c
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@ -33,8 +33,6 @@ t_snd snd;
uint8 vdp_rate;
uint16 lines_per_frame;
double Master_Clock;
uint32 m68cycles_per_line;
uint32 z80cycles_per_line;
uint32 aim_m68k;
uint32 count_m68k;
uint32 line_m68k;
@ -61,16 +59,21 @@ static inline void update_interrupts(void)
uint8 latency = hvint_updated;
hvint_updated = -1;
/* VDP hardware latency */
if (latency) count_m68k += m68k_execute(latency);
/* Level 6 interrupt */
if (vint_pending && (reg[1] & 0x20))
{
vint_triggered = 1;
if (latency) count_m68k += m68k_execute(latency);
m68k_set_irq(6);
}
/* Level 4 interrupt */
else if (hint_pending && (reg[0] & 0x10))
{
m68k_set_irq(4);
}
/* Clear all interrupts */
else
{
m68k_set_irq(0);
@ -105,10 +108,6 @@ void system_init (void)
lines_per_frame = vdp_pal ? 313 : 262;
Master_Clock = vdp_pal ? (double)CLOCK_PAL : (double)CLOCK_NTSC;
/* CPU cycles increments */
z80cycles_per_line = 228;
m68cycles_per_line = 488;
gen_init ();
vdp_init ();
render_init ();
@ -260,22 +259,22 @@ int system_frame (int do_skip)
/* update inputs */
update_input();
/* set VBLANK flag */
/* set VBLANK flag (Dracula) */
status |= 0x08;
/* Z80 interrupt is 16ms period (one frame) and 64us length (one scanline) */
zirq = 1;
z80_set_irq_line(0, ASSERT_LINE);
/* delay between HINT, VBLANK and VINT (approx. 14.7 us) */
m68k_run(line_m68k + 84); /* need to take upcoming latency in account (Hurricanes, Outrunners) */
if (zreset && !zbusreq) z80_run(line_z80 + 40);
else count_z80 = line_z80 + 40;
/* delay between HINT, VBLANK and VINT (OutRunners, VR Troopers) */
m68k_run(line_m68k + 84);
if (zreset && !zbusreq) z80_run(line_z80 + 39);
else count_z80 = line_z80 + 39;
/* Vertical Interrupt */
status |= 0x80;
vint_pending = 1;
hvint_updated = 30; /* Tyrants, Mega-Lo-Mania & Ex Mutant need some cycles to read VINT flag */
hvint_updated = 36; /* Tyrants, Mega-Lo-Mania & Ex Mutant need some cycles to read VINT flag */
}
else if (zirq)
{

7
source/system.h
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@ -28,6 +28,10 @@
#define SYSTEM_MEGADRIVE 1
#define SYSTEM_PICO 2
/* CPU cycles increments */
#define z80cycles_per_line 228
#define m68cycles_per_line 488
typedef struct
{
uint8 *data; /* Bitmap data */
@ -75,10 +79,7 @@ typedef struct
extern t_bitmap bitmap;
extern t_snd snd;
extern uint16 lines_per_frame;
extern double Master_Clock;
extern uint8 vdp_rate;
extern uint32 m68cycles_per_line;
extern uint32 z80cycles_per_line;
extern uint32 aim_m68k;
extern uint32 count_m68k;
extern uint32 line_m68k;

4
source/vdp.c
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@ -604,7 +604,7 @@ unsigned int vdp_ctrl_r(void)
if (!(reg[1] & 0x40)) temp |= 0x8;
/* HBLANK flag (Sonic 3 and Sonic 2 "VS Modes", Lemmings 2) */
if (count_m68k <= line_m68k + 84) temp |= 0x4;
if ((count_m68k <= (line_m68k + 84)) || (count_m68k > (line_m68k + 488))) temp |= 0x4;
/* clear pending flag */
pending = 0;
@ -766,7 +766,7 @@ void vdp_reg_w(unsigned int r, unsigned int d)
color_update(0x00, *(uint16 *)&cram[(border << 1)]);
/* background color modified during HBLANK */
if ((v_counter < bitmap.viewport.h) && (count_m68k <= (line_m68k + 84)))
if (count_m68k <= (line_m68k + 84))
{
/* remap current line (see Road Rash I,II,III) */
reg[7] = d;