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// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
#include "emu.h"
#include "namco_settings.h"
DEFINE_DEVICE_TYPE(NAMCO_SETTINGS, namco_settings_device, "namco_settings", "Namco Settings")
namco_settings_device::namco_settings_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, NAMCO_SETTINGS, tag, owner, clock)
{
}
WRITE_LINE_MEMBER( namco_settings_device::ce_w )
{
if(ce != state) {
ce = state;
if(ce)
cur_bit = 0;
}
}
WRITE_LINE_MEMBER( namco_settings_device::clk_w )
{
if(clk != state) {
clk = state;
if(clk) {
if(cur_bit < 8)
adr = (adr >> 1) | (data << 7);
else
value = (value << 1) | data;
cur_bit++;
if(cur_bit == 16) {
cur_bit = 0;
logerror("%s: %02x = %02x\n", tag(), adr, value);
}
}
}
}
WRITE_LINE_MEMBER( namco_settings_device::data_w )
{
data = state;
}
void namco_settings_device::device_start()
{
save_item(NAME(adr));
save_item(NAME(value));
save_item(NAME(ce));
save_item(NAME(clk));
save_item(NAME(data));
save_item(NAME(cur_bit));
}
void namco_settings_device::device_reset()
{
adr = value = 0x00;
ce = false;
clk = true;
data = false;
cur_bit = 0;
}
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