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// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
// TC9223P/TC9223F PLL-based frequency synthesizer
// Minimal implementation, logs the commands
#include "emu.h"
#include "tc9223.h"
DEFINE_DEVICE_TYPE(TC9223, tc9223_device, "tc9223", "TC9223P/F frequency synthesizer")
tc9223_device::tc9223_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, TC9223, tag, owner, clock)
{
}
void tc9223_device::device_start()
{
save_item(NAME(m_shift));
save_item(NAME(m_stb));
save_item(NAME(m_clk));
save_item(NAME(m_dat));
}
void tc9223_device::device_reset()
{
m_shift = 0;
m_stb = 0;
m_clk = 0;
m_dat = 0;
}
void tc9223_device::stb_w(int state)
{
if(state == m_stb)
return;
m_stb = state;
if(!m_stb)
return;
switch(m_shift >> 14) {
case 0:
logerror("gpio=%s lock=%s\n",
m_shift & 0x1000 ? "1" : "0",
m_shift & 0x2000 ? "unlocked" : "normal");
break;
case 1:
logerror("a=%d n=%d\n", m_shift & 0x3f, (m_shift >> 6) & 0x7ff);
break;
case 2:
logerror("divider %d\n", m_shift & 0x3fff);
break;
case 3:
logerror("%s %s\n",
m_shift & 0x1000 ? "falling" : "rising",
m_shift & 0x2000 ? "non-inverting" : "inverting");
break;
}
}
void tc9223_device::clk_w(int state)
{
if(state == m_clk)
return;
m_clk = state;
if(!m_clk)
return;
m_shift = (m_shift >> 1) | (m_dat ? 0x8000 : 0);
}
void tc9223_device::dat_w(int state)
{
m_dat = state;
}
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