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Moved SNES timer allocation to MACHINE_START

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This commit is contained in:
Fabio Priuli 2009-12-15 17:28:22 +00:00
parent 908778a92e
commit dd269def34
1 changed files with 21 additions and 15 deletions
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36
src/mame/machine/snes.c
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@ -1972,6 +1972,25 @@ WRITE8_HANDLER( snes_w_bank7 )
*************************************/ *************************************/
static void snes_init_timers(running_machine *machine)
{
/* init timers and stop them */
snes_scanline_timer = timer_alloc(machine, snes_scanline_tick, NULL);
timer_adjust_oneshot(snes_scanline_timer, attotime_never, 0);
snes_hblank_timer = timer_alloc(machine, snes_hblank_tick, NULL);
timer_adjust_oneshot(snes_hblank_timer, attotime_never, 0);
snes_nmi_timer = timer_alloc(machine, snes_nmi_tick, NULL);
timer_adjust_oneshot(snes_nmi_timer, attotime_never, 0);
snes_hirq_timer = timer_alloc(machine, snes_hirq_tick_callback, NULL);
timer_adjust_oneshot(snes_hirq_timer, attotime_never, 0);
// SNES hcounter has a 0-339 range. hblank starts at counter 260.
// clayfighter sets an HIRQ at 260, apparently it wants it to be before hdma kicks off, so we'll delay 2 pixels.
hblank_offset = 268;
timer_adjust_oneshot(snes_hblank_timer, video_screen_get_time_until_pos(machine->primary_screen, ((snes_ram[STAT78] & 0x10) == SNES_NTSC) ? SNES_VTOTAL_NTSC-1 : SNES_VTOTAL_PAL-1, hblank_offset), 0);
}
static void snes_init_ram(running_machine *machine) static void snes_init_ram(running_machine *machine)
{ {
const address_space *cpu0space = cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM); const address_space *cpu0space = cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM);
@ -2020,21 +2039,6 @@ static void snes_init_ram(running_machine *machine)
snes_ram[WRIO] = 0xff; snes_ram[WRIO] = 0xff;
snes_ram[VMAIN] = 0x80; snes_ram[VMAIN] = 0x80;
/* init timers and stop them */
snes_scanline_timer = timer_alloc(machine, snes_scanline_tick, NULL);
timer_adjust_oneshot(snes_scanline_timer, attotime_never, 0);
snes_hblank_timer = timer_alloc(machine, snes_hblank_tick, NULL);
timer_adjust_oneshot(snes_hblank_timer, attotime_never, 0);
snes_nmi_timer = timer_alloc(machine, snes_nmi_tick, NULL);
timer_adjust_oneshot(snes_nmi_timer, attotime_never, 0);
snes_hirq_timer = timer_alloc(machine, snes_hirq_tick_callback, NULL);
timer_adjust_oneshot(snes_hirq_timer, attotime_never, 0);
// SNES hcounter has a 0-339 range. hblank starts at counter 260.
// clayfighter sets an HIRQ at 260, apparently it wants it to be before hdma kicks off, so we'll delay 2 pixels.
hblank_offset = 268;
timer_adjust_oneshot(snes_hblank_timer, video_screen_get_time_until_pos(machine->primary_screen, ((snes_ram[STAT78] & 0x10) == SNES_NTSC) ? SNES_VTOTAL_NTSC-1 : SNES_VTOTAL_PAL-1, hblank_offset), 0);
switch (snes_has_addon_chip) switch (snes_has_addon_chip)
{ {
case HAS_DSP1: case HAS_DSP1:
@ -2143,6 +2147,8 @@ MACHINE_START( snes )
st010_init(machine); st010_init(machine);
break; break;
} }
snes_init_timers(machine);
} }
MACHINE_RESET( snes ) MACHINE_RESET( snes )