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Removed use of cpu_scalebyfcount()

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This commit is contained in:
Zsolt Vasvari 2008-03-01 16:20:39 +00:00
parent 7198a00e65
commit 275d692874
1 changed files with 19 additions and 2 deletions
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21
src/mame/drivers/cvs.c
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@ -129,6 +129,8 @@ UINT8 *cvs_s2636_0_ram;
UINT8 *cvs_s2636_1_ram; UINT8 *cvs_s2636_1_ram;
UINT8 *cvs_s2636_2_ram; UINT8 *cvs_s2636_2_ram;
static emu_timer *cvs_393hz_timer;
static UINT8 cvs_393hz_clock;
static UINT8 *cvs_4_bit_dac_data; static UINT8 *cvs_4_bit_dac_data;
static UINT8 *cvs_tms5110_ctl_data; static UINT8 *cvs_tms5110_ctl_data;
@ -299,8 +301,20 @@ static READ8_HANDLER( cvs_input_r )
static READ8_HANDLER( cvs_393hz_clock_r ) static READ8_HANDLER( cvs_393hz_clock_r )
{ {
if(cpu_scalebyfcount(6) & 1) return 0x80; return cvs_393hz_clock ? 0x80 : 0;
else return 0; }
static TIMER_CALLBACK( cvs_393hz_timer_cb )
{
cvs_393hz_clock = !cvs_393hz_clock;
}
static void start_393hz_timer(void)
{
cvs_393hz_timer = timer_alloc(cvs_393hz_timer_cb, NULL);
timer_adjust_periodic(cvs_393hz_timer, ATTOTIME_IN_HZ(2*393), 0, ATTOTIME_IN_HZ(2*393));
} }
@ -486,6 +500,8 @@ MACHINE_START( cvs )
cvs_character_ram = auto_malloc(3 * 0x800); /* only half is used, but cvs_character_ram = auto_malloc(3 * 0x800); /* only half is used, but
by allocating twice the amount, by allocating twice the amount,
we can use the same gfx_layout */ we can use the same gfx_layout */
start_393hz_timer();
/* register state save */ /* register state save */
state_save_register_global_pointer(cvs_color_ram, 0x400); state_save_register_global_pointer(cvs_color_ram, 0x400);
state_save_register_global_pointer(cvs_palette_ram, 0x10); state_save_register_global_pointer(cvs_palette_ram, 0x10);
@ -493,6 +509,7 @@ MACHINE_START( cvs )
state_save_register_global(character_banking_mode); state_save_register_global(character_banking_mode);
state_save_register_global(character_ram_page_start); state_save_register_global(character_ram_page_start);
state_save_register_global(speech_rom_bit_address); state_save_register_global(speech_rom_bit_address);
state_save_register_global(cvs_393hz_clock);
} }