static WRITE16_HANDLER( dbzcontrol_w )
{
dbz_state *state = space->machine().driver_data<dbz_state>();
/* bit 10 = enable '246 readback */
COMBINE_DATA(&state->m_control);
if (data & 0x400)
k053246_set_objcha_line(state->m_k053246, ASSERT_LINE);
else
k053246_set_objcha_line(state->m_k053246, CLEAR_LINE);
coin_counter_w(space->machine(), 0, data & 1);
coin_counter_w(space->machine(), 1, data & 2);
}
static WRITE16_HANDLER( cpuB_ctrl_w )
{
overdriv_state *state = space->machine().driver_data<overdriv_state>();
COMBINE_DATA(&state->m_cpuB_ctrl);
if (ACCESSING_BITS_0_7)
{
/* bit 0 = enable sprite ROM reading */
k053246_set_objcha_line(state->m_k053246, (data & 0x01) ? ASSERT_LINE : CLEAR_LINE);
/* bit 1 used but unknown (irq enable?) */
/* other bits unused? */
}
}
static void parse_control2( running_machine &machine )
{
xexex_state *state = machine.driver_data<xexex_state>();
/* bit 0 is data */
/* bit 1 is cs (active low) */
/* bit 2 is clock (active high) */
/* bit 5 is enable irq 6 */
/* bit 6 is enable irq 5 */
/* bit 11 is watchdog */
state->ioport("EEPROMOUT")->write(state->m_cur_control2, 0xff);
/* bit 8 = enable sprite ROM reading */
k053246_set_objcha_line(state->m_k053246, (state->m_cur_control2 & 0x0100) ? ASSERT_LINE : CLEAR_LINE);
/* bit 9 = disable alpha channel on K054157 plane 0 (under investigation) */
state->m_cur_alpha = !(state->m_cur_control2 & 0x200);
}
static WRITE8_HANDLER( vendetta_5fe0_w )
{
vendetta_state *state = (vendetta_state *)space->machine->driver_data;
/* bit 0,1 coin counters */
coin_counter_w(space->machine, 0, data & 0x01);
coin_counter_w(space->machine, 1, data & 0x02);
/* bit 2 = BRAMBK ?? */
/* bit 3 = enable char ROM reading through the video RAM */
k052109_set_rmrd_line(state->k052109, (data & 0x08) ? ASSERT_LINE : CLEAR_LINE);
/* bit 4 = INIT ?? */
/* bit 5 = enable sprite ROM reading */
k053246_set_objcha_line(state->k053246, (data & 0x20) ? ASSERT_LINE : CLEAR_LINE);
}
static WRITE16_HANDLER( control2_w )
{
gijoe_state *state = space->machine->driver_data<gijoe_state>();
if (ACCESSING_BITS_0_7)
{
/* bit 0 is data */
/* bit 1 is cs (active low) */
/* bit 2 is clock (active high) */
/* bit 3 (unknown: coin) */
/* bit 5 is enable irq 6 */
/* bit 7 (unknown: enable irq 5?) */
input_port_write(space->machine, "EEPROMOUT", data, 0xff);
state->cur_control2 = data;
/* bit 6 = enable sprite ROM reading */
k053246_set_objcha_line(state->k053246, (data & 0x0040) ? ASSERT_LINE : CLEAR_LINE);
}
}
static WRITE16_HANDLER( eeprom_w )
{
xmen_state *state = space->machine().driver_data<xmen_state>();
logerror("%06x: write %04x to 108000\n",cpu_get_pc(&space->device()),data);
if (ACCESSING_BITS_0_7)
{
/* bit 0 = coin counter */
coin_counter_w(space->machine(), 0, data & 0x01);
/* bit 2 is data */
/* bit 3 is clock (active high) */
/* bit 4 is cs (active low) */
input_port_write(space->machine(), "EEPROMOUT", data, 0xff);
}
if (ACCESSING_BITS_8_15)
{
/* bit 8 = enable sprite ROM reading */
k053246_set_objcha_line(state->m_k053246, (data & 0x0100) ? ASSERT_LINE : CLEAR_LINE);
/* bit 9 = enable char ROM reading through the video RAM */
k052109_set_rmrd_line(state->m_k052109, (data & 0x0200) ? ASSERT_LINE : CLEAR_LINE);
}
}
