/*
* libretro core glue for PicoDrive
* (C) notaz, 2013
+ * (C) aliaspider, 2016
+ * (C) Daniel De Matteis, 2013
*
* This work is licensed under the terms of MAME license.
* See COPYING file in the top-level directory.
void linearFree(void* mem);
static int ctr_svchack_successful = 0;
+
+#elif defined(VITA)
+#define TARGET_SIZE_2 24 // 2^24 = 16 megabytes
+
+#include <psp2/kernel/sysmem.h>
+static int sceBlock;
+int getVMBlock();
+int _newlib_vm_size_user = 1 << TARGET_SIZE_2;
+
#endif
#include <pico/pico_int.h>
#include <pico/state.h>
+#include <pico/patch.h>
#include "../common/input_pico.h"
#include "../common/version.h"
#include "libretro.h"
#define VOUT_MAX_WIDTH 320
#define VOUT_MAX_HEIGHT 240
+
+static const float VOUT_PAR = 0.0;
+static const float VOUT_4_3 = (224.0f * (4.0f / 3.0f));
+static const float VOUT_CRT = (224.0f * 1.29911f);
+
+bool show_overscan = false;
+
static void *vout_buf;
static int vout_width, vout_height, vout_offset;
+static float user_vout_width = 0.0;
#ifdef _MSC_VER
static short sndBuffer[2*44100/50];
void cache_flush_d_inval_i(void *start, void *end)
{
#ifdef __arm__
+ size_t len = (char *)end - (char *)start;
#if defined(__BLACKBERRY_QNX__)
msync(start, end - start, MS_SYNC | MS_CACHE_ONLY | MS_INVALIDATE_ICACHE);
#elif defined(__MACH__)
- size_t len = (char *)end - (char *)start;
sys_dcache_flush(start, len);
sys_icache_invalidate(start, len);
#elif defined(_3DS)
ctr_flush_invalidate_cache();
+#elif defined(VITA)
+ sceKernelSyncVMDomain(sceBlock, start, len);
#else
__clear_cache(start, end);
#endif
exit(1);
}
-
+#elif defined(VITA)
+ int ret = sceKernelOpenVMDomain();
#else
int ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
if (ret != 0 && log_cb)
memset(vout_buf, 0, 320 * 240 * 2);
vout_width = is_32cols ? 256 : 320;
PicoDrawSetOutBuf(vout_buf, vout_width * 2);
+ if (show_overscan == true) line_count += 16;
+ if (show_overscan == true) start_line -= 8;
vout_height = line_count;
vout_offset = vout_width * start_line;
+
+ // Update the geometry
+ struct retro_system_av_info av_info;
+ retro_get_system_av_info(&av_info);
+ environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
}
void emu_32x_startup(void)
{ "picodrive_sprlim", "No sprite limit; disabled|enabled" },
{ "picodrive_ramcart", "MegaCD RAM cart; disabled|enabled" },
{ "picodrive_region", "Region; Auto|Japan NTSC|Japan PAL|US|Europe" },
- { "picodrive_region_fps", "Region FPS; Auto|NTSC|PAL"},
+ { "picodrive_region_fps", "Region FPS; Auto|NTSC|PAL" },
+ { "picodrive_aspect", "Core-provided aspect ratio; PAR|4/3|CRT" },
+ { "picodrive_overscan", "Show Overscan; disabled|enabled" },
#ifdef DRC_SH2
{ "picodrive_drc", "Dynamic recompilers; enabled|disabled" },
#endif
{
memset(info, 0, sizeof(*info));
info->library_name = "PicoDrive";
- info->library_version = VERSION;
+#ifndef GIT_VERSION
+#define GIT_VERSION ""
+#endif
+ info->library_version = VERSION GIT_VERSION;
info->valid_extensions = "bin|gen|smd|md|32x|cue|iso|sms";
info->need_fullpath = true;
}
memset(info, 0, sizeof(*info));
info->timing.fps = Pico.m.pal ? 50 : 60;
info->timing.sample_rate = 44100;
- info->geometry.base_width = 320;
+ info->geometry.base_width = vout_width;
info->geometry.base_height = vout_height;
- info->geometry.max_width = VOUT_MAX_WIDTH;
- info->geometry.max_height = VOUT_MAX_HEIGHT;
- info->geometry.aspect_ratio = 4.0f / 3.0f;
+ info->geometry.max_width = vout_width;
+ info->geometry.max_height = vout_height;
+
+ float common_width = vout_width;
+ if (user_vout_width != 0)
+ common_width = user_vout_width;
+
+ info->geometry.aspect_ratio = common_width / vout_height;
}
/* savestates */
return ret == 0;
}
-/* cheats - TODO */
+typedef struct patch
+{
+ unsigned int addr;
+ unsigned short data;
+} patch;
+
+extern void decode(char *buff, patch *dest);
+extern uint16_t m68k_read16(uint32_t a);
+extern void m68k_write16(uint32_t a, uint16_t d);
+
void retro_cheat_reset(void)
{
+ int i=0;
+ unsigned int addr;
+
+ for (i = 0; i < PicoPatchCount; i++)
+ {
+ addr = PicoPatches[i].addr;
+ if (addr < Pico.romsize) {
+ if (PicoPatches[i].active)
+ *(unsigned short *)(Pico.rom + addr) = PicoPatches[i].data_old;
+ } else {
+ if (PicoPatches[i].active)
+ m68k_write16(PicoPatches[i].addr,PicoPatches[i].data_old);
+ }
+ }
+
+ PicoPatchUnload();
}
void retro_cheat_set(unsigned index, bool enabled, const char *code)
{
+ patch pt;
+ int array_len = 0;
+ char codeCopy[256];
+ char *buff;
+ bool multiline=0;
+
+ strcpy(codeCopy,code);
+
+ if (strstr(code,"+")){
+ multiline=1;
+ buff = strtok(codeCopy,"+");
+ } else {
+ buff=codeCopy;
+ }
+
+ while (buff != NULL)
+ {
+ decode(buff, &pt);
+ if (pt.addr == (uint32_t) -1 || pt.data == (uint16_t) -1)
+ {
+ log_cb(RETRO_LOG_ERROR,"CHEATS: Invalid code: %s\n",buff);
+ return;
+ }
+
+ /* code was good, add it */
+ if (array_len < PicoPatchCount + 1)
+ {
+ void *ptr;
+ array_len *= 2;
+ array_len++;
+ ptr = realloc(PicoPatches, array_len * sizeof(PicoPatches[0]));
+ if (ptr == NULL) {
+ log_cb(RETRO_LOG_ERROR,"CHEATS: Failed to allocate memory for: %s\n",buff);
+ return;
+ }
+ PicoPatches = ptr;
+ }
+ strcpy(PicoPatches[PicoPatchCount].code, buff);
+
+ PicoPatches[PicoPatchCount].active = enabled;
+ PicoPatches[PicoPatchCount].addr = pt.addr;
+ PicoPatches[PicoPatchCount].data = pt.data;
+ if (PicoPatches[PicoPatchCount].addr < Pico.romsize)
+ PicoPatches[PicoPatchCount].data_old = *(uint16_t *)(Pico.rom + PicoPatches[PicoPatchCount].addr);
+ else
+ PicoPatches[PicoPatchCount].data_old = (uint16_t) m68k_read16(PicoPatches[PicoPatchCount].addr);
+ PicoPatchCount++;
+
+ if (!multiline)
+ break;
+ }
}
/* multidisk support */
return NULL;
}
+static void sram_reset()
+{
+ SRam.data = NULL;
+ SRam.start = 0;
+ SRam.end = 0;
+ SRam.flags = '\0';
+ SRam.unused2 = '\0';
+ SRam.changed = '\0' ;
+ SRam.eeprom_type = '\0';
+ SRam.unused3 = '\0';
+ SRam.eeprom_bit_cl = '\0';
+ SRam.eeprom_bit_in = '\0';
+ SRam.eeprom_bit_out = '\0';
+ SRam.size = 0;
+}
+
bool retro_load_game(const struct retro_game_info *info)
{
enum media_type_e media_type;
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "1 Start" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "2" },
- { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Pause" },
+ { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
+ { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
+ { 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
{ 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "D-Pad Left" },
{ 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "D-Pad Up" },
{ 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "D-Pad Down" },
{ 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "D-Pad Right" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "1 Start" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "2" },
- { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Pause" },
+ { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_B, "Button 1 Start" },
+ { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A, "Button 2" },
+ { 1, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START, "Button Pause" },
{ 0 },
};
+ sram_reset();
+
enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
if (log_cb)
return Pico.m.pal ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
}
-void *retro_get_memory_data(unsigned id)
+void *retro_get_memory_data(unsigned type)
{
- if (id != RETRO_MEMORY_SAVE_RAM)
- return NULL;
+ uint8_t* data;
- if (PicoAHW & PAHW_MCD)
- return Pico_mcd->bram;
- else
- return SRam.data;
+ switch(type)
+ {
+ case RETRO_MEMORY_SAVE_RAM:
+ if (PicoAHW & PAHW_MCD)
+ data = Pico_mcd->bram;
+ else
+ data = SRam.data;
+ break;
+ case RETRO_MEMORY_SYSTEM_RAM:
+ if (PicoAHW & PAHW_SMS)
+ data = Pico.vramb;
+ else
+ data = Pico.ram;
+ break;
+ default:
+ data = NULL;
+ break;
+ }
+
+ return data;
}
-size_t retro_get_memory_size(unsigned id)
+size_t retro_get_memory_size(unsigned type)
{
unsigned int i;
int sum;
- if (id != RETRO_MEMORY_SAVE_RAM)
- return 0;
+ switch(type)
+ {
+ case RETRO_MEMORY_SAVE_RAM:
+ if (PicoAHW & PAHW_MCD)
+ // bram
+ return 0x2000;
- if (PicoAHW & PAHW_MCD)
- // bram
- return 0x2000;
+ if (Pico.m.frame_count == 0)
+ return SRam.size;
- if (Pico.m.frame_count == 0)
- return SRam.size;
+ // if game doesn't write to sram, don't report it to
+ // libretro so that RA doesn't write out zeroed .srm
+ for (i = 0, sum = 0; i < SRam.size; i++)
+ sum |= SRam.data[i];
- // if game doesn't write to sram, don't report it to
- // libretro so that RA doesn't write out zeroed .srm
- for (i = 0, sum = 0; i < SRam.size; i++)
- sum |= SRam.data[i];
+ return (sum != 0) ? SRam.size : 0;
+
+ case RETRO_MEMORY_SYSTEM_RAM:
+ if (PicoAHW & PAHW_SMS)
+ return sizeof(Pico.vramb);
+ else
+ return sizeof(Pico.ram);
+
+ default:
+ return 0;
+ }
- return (sum != 0) ? SRam.size : 0;
}
void retro_reset(void)
else if (strcmp(var.value, "NTSC") == 0)
PicoRegionFPSOverride = 1;
else if (strcmp(var.value, "PAL") == 0)
- PicoRegionFPSOverride = 2;
+ PicoRegionFPSOverride = 2;
}
// Update region, fps and sound flags if needed
PsndRerate(1);
}
+ float old_user_vout_width = user_vout_width;
+ var.value = NULL;
+ var.key = "picodrive_aspect";
+ if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
+ if (strcmp(var.value, "4/3") == 0)
+ user_vout_width = VOUT_4_3;
+ else if (strcmp(var.value, "CRT") == 0)
+ user_vout_width = VOUT_CRT;
+ else
+ user_vout_width = VOUT_PAR;
+ }
+
+ var.value = NULL;
+ var.key = "picodrive_overscan";
+ if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
+ if (strcmp(var.value, "enabled") == 0)
+ show_overscan = true;
+ else
+ show_overscan = false;
+ }
+
+ if (user_vout_width != old_user_vout_width)
+ {
+ // Update the geometry
+ struct retro_system_av_info av_info;
+ retro_get_system_av_info(&av_info);
+ environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
+ }
+
#ifdef DRC_SH2
var.value = NULL;
var.key = "picodrive_drc";
if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
PicoPad[pad] |= retro_pico_map[i];
+ PicoPatchApply();
PicoFrame();
video_cb((short *)vout_buf + vout_offset,
#ifdef _3DS
ctr_svchack_successful = ctr_svchack_init();
+#elif defined(VITA)
+ sceBlock = getVMBlock();
#endif
PicoOpt = POPT_EN_STEREO|POPT_EN_FM|POPT_EN_PSG|POPT_EN_Z80
notaz.gp2x.de / picodrive.git / blobdiff