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not worth mention: minor addition to support SNES SuperScope in MESS

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This commit is contained in:
Fabio Priuli 2010-03-08 07:03:58 +00:00
parent f84bb3da43
commit d1ebfa9d2e
2 changed files with 31 additions and 22 deletions
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50
src/mame/includes/snes.h
View File

@ -36,25 +36,25 @@
#endif /* MAME_DEBUG */
/* Useful definitions */
#define SNES_SCR_WIDTH 256 /* 32 characters 8 pixels wide */
#define SNES_SCR_HEIGHT_NTSC 224 /* Can be 224 or 240 height */
#define SNES_SCR_HEIGHT_PAL 274 /* ??? */
#define SNES_VTOTAL_NTSC 262 /* Maximum number of lines for NTSC systems */
#define SNES_VTOTAL_PAL 312 /* Maximum number of lines for PAL systems */
#define SNES_HTOTAL 341 /* Maximum number pixels per line (incl. hblank) */
#define SNES_DMA_BASE 0x4300 /* Base DMA register address */
#define SNES_MODE_20 0x1 /* Lo-ROM cart */
#define SNES_MODE_21 0x2 /* Hi-ROM cart */
#define SNES_MODE_22 0x4 /* Extended Lo-ROM cart - SDD-1 */
#define SNES_MODE_25 0x8 /* Extended Hi-ROM cart */
#define SNES_NTSC 0x00
#define SNES_PAL 0x10
#define SNES_VRAM_SIZE 0x20000 /* 128kb of video ram */
#define SNES_CGRAM_SIZE 0x202 /* 256 16-bit colours + 1 tacked on 16-bit colour for fixed colour */
#define SNES_OAM_SIZE 0x440 /* 1088 bytes of Object Attribute Memory */
#define SNES_SPCRAM_SIZE 0x10000 /* 64kb of spc700 ram */
#define SNES_EXROM_START 0x1000000
#define FIXED_COLOUR 256 /* Position in cgram for fixed colour */
#define SNES_SCR_WIDTH 256 /* 32 characters 8 pixels wide */
#define SNES_SCR_HEIGHT_NTSC 224 /* Can be 224 or 240 height */
#define SNES_SCR_HEIGHT_PAL 274 /* ??? */
#define SNES_VTOTAL_NTSC 262 /* Maximum number of lines for NTSC systems */
#define SNES_VTOTAL_PAL 312 /* Maximum number of lines for PAL systems */
#define SNES_HTOTAL 341 /* Maximum number pixels per line (incl. hblank) */
#define SNES_DMA_BASE 0x4300 /* Base DMA register address */
#define SNES_MODE_20 0x1 /* Lo-ROM cart */
#define SNES_MODE_21 0x2 /* Hi-ROM cart */
#define SNES_MODE_22 0x4 /* Extended Lo-ROM cart - SDD-1 */
#define SNES_MODE_25 0x8 /* Extended Hi-ROM cart */
#define SNES_NTSC 0x00
#define SNES_PAL 0x10
#define SNES_VRAM_SIZE 0x20000 /* 128kb of video ram */
#define SNES_CGRAM_SIZE 0x202 /* 256 16-bit colours + 1 tacked on 16-bit colour for fixed colour */
#define SNES_OAM_SIZE 0x440 /* 1088 bytes of Object Attribute Memory */
#define SNES_SPCRAM_SIZE 0x10000 /* 64kb of spc700 ram */
#define SNES_EXROM_START 0x1000000
#define FIXED_COLOUR 256 /* Position in cgram for fixed colour */
/* Definitions for PPU Memory-Mapped registers */
#define INIDISP 0x2100
#define OBSEL 0x2101
@ -369,6 +369,14 @@ struct snes_mouse
int speed;
};
struct snes_superscope
{
INT16 x, y;
UINT8 buttons;
int turbo_lock, pause_lock, fire_lock;
int offscreen;
};
typedef void (*snes_io_read)(running_machine *machine);
typedef UINT8 (*snes_oldjoy_read)(running_machine *machine);
@ -384,6 +392,7 @@ public:
UINT8 read_idx[2];
snes_controller_port joypad[4];
snes_mouse mouse[2];
snes_superscope scope[2];
/* input callbacks (to allow MESS to have its own input handlers) */
snes_io_read io_read;
@ -471,9 +480,10 @@ extern UINT8 snes_has_addon_chip;
extern UINT32 snes_rom_size;
extern UINT16 snes_htmult;
extern void snes_gdma( const address_space *space, UINT8 channels );
extern void snes_gdma(const address_space *space, UINT8 channels);
extern void snes_hdma_init(void);
extern void snes_hdma(const address_space *space);
extern void snes_latch_counters(running_machine *machine);
/* (PPU) Video related */
extern UINT8 *snes_vram; /* Video RAM (Should be 16-bit, but it's easier this way) */

3
src/mame/machine/snes.c
View File

@ -70,7 +70,7 @@ struct snes_cart_info snes_cart;
*************************************/
// utility function - latches the H/V counters. Used by IRQ, writes to WRIO, etc.
static void snes_latch_counters(running_machine *machine)
void snes_latch_counters(running_machine *machine)
{
snes_ppu.beam.current_horz = video_screen_get_hpos(machine->primary_screen) / snes_htmult;
snes_ppu.beam.latch_vert = video_screen_get_vpos(machine->primary_screen);
@ -572,7 +572,6 @@ READ8_HANDLER( snes_r_io )
read_ophct = 0;
read_opvct = 0;
value = snes_ram[offset];
value &= ~0x40; // clear 'latched counters' flag
value |= (snes_ppu.ppu1_open_bus & 0x20);
value |= (snes_ppu.ppu2_version & 0x0f);
snes_ram[offset] = value; // not sure if this is needed...