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Diffstat (limited to 'src/emu/machine/7474.c')
-rw-r--r--src/emu/machine/7474.c92
1 files changed, 46 insertions, 46 deletions
diff --git a/src/emu/machine/7474.c b/src/emu/machine/7474.c
index c66b92c8ede..180dd2c6b79 100644
--- a/src/emu/machine/7474.c
+++ b/src/emu/machine/7474.c
@@ -54,11 +54,11 @@ const device_type MACHINE_TTL7474 = &device_creator<ttl7474_device>;
//-------------------------------------------------
ttl7474_device::ttl7474_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
- : device_t(mconfig, MACHINE_TTL7474, "7474", tag, owner, clock),
- m_output_func(*this),
- m_comp_output_func(*this)
+ : device_t(mconfig, MACHINE_TTL7474, "7474", tag, owner, clock),
+ m_output_func(*this),
+ m_comp_output_func(*this)
{
- init();
+ init();
}
//-------------------------------------------------
@@ -67,15 +67,15 @@ ttl7474_device::ttl7474_device(const machine_config &mconfig, const char *tag, d
void ttl7474_device::device_start()
{
- save_item(NAME(m_clear));
- save_item(NAME(m_preset));
- save_item(NAME(m_clk));
- save_item(NAME(m_d));
- save_item(NAME(m_output));
- save_item(NAME(m_output_comp));
- save_item(NAME(m_last_clock));
- save_item(NAME(m_last_output));
- save_item(NAME(m_last_output_comp));
+ save_item(NAME(m_clear));
+ save_item(NAME(m_preset));
+ save_item(NAME(m_clk));
+ save_item(NAME(m_d));
+ save_item(NAME(m_output));
+ save_item(NAME(m_output_comp));
+ save_item(NAME(m_last_clock));
+ save_item(NAME(m_last_output));
+ save_item(NAME(m_last_output_comp));
m_output_func.resolve_safe();
m_comp_output_func.resolve_safe();
@@ -88,7 +88,7 @@ void ttl7474_device::device_start()
void ttl7474_device::device_reset()
{
- init();
+ init();
}
@@ -98,40 +98,40 @@ void ttl7474_device::device_reset()
void ttl7474_device::update()
{
- if (!m_preset && m_clear) // line 1 in truth table
+ if (!m_preset && m_clear) // line 1 in truth table
{
- m_output = 1;
- m_output_comp = 0;
+ m_output = 1;
+ m_output_comp = 0;
}
- else if (m_preset && !m_clear) // line 2 in truth table
+ else if (m_preset && !m_clear) // line 2 in truth table
{
- m_output = 0;
- m_output_comp = 1;
+ m_output = 0;
+ m_output_comp = 1;
}
- else if (!m_preset && !m_clear) // line 3 in truth table
+ else if (!m_preset && !m_clear) // line 3 in truth table
{
- m_output = 1;
- m_output_comp = 1;
+ m_output = 1;
+ m_output_comp = 1;
}
- else if (!m_last_clock && m_clk) // line 4 in truth table
+ else if (!m_last_clock && m_clk) // line 4 in truth table
{
- m_output = m_d;
- m_output_comp = !m_d;
+ m_output = m_d;
+ m_output_comp = !m_d;
}
- m_last_clock = m_clk;
+ m_last_clock = m_clk;
// call callback if any of the outputs changed
- if (m_output != m_last_output)
+ if (m_output != m_last_output)
{
- m_last_output = m_output;
+ m_last_output = m_output;
m_output_func(m_output);
}
// call callback if any of the outputs changed
- if (m_output_comp != m_last_output_comp)
+ if (m_output_comp != m_last_output_comp)
{
- m_last_output_comp = m_output_comp;
+ m_last_output_comp = m_output_comp;
m_comp_output_func(m_output_comp);
}
}
@@ -143,7 +143,7 @@ void ttl7474_device::update()
WRITE_LINE_MEMBER( ttl7474_device::clear_w )
{
- m_clear = state & 1;
+ m_clear = state & 1;
update();
}
@@ -154,7 +154,7 @@ WRITE_LINE_MEMBER( ttl7474_device::clear_w )
WRITE_LINE_MEMBER( ttl7474_device::preset_w )
{
- m_preset = state & 1;
+ m_preset = state & 1;
update();
}
@@ -165,7 +165,7 @@ WRITE_LINE_MEMBER( ttl7474_device::preset_w )
WRITE_LINE_MEMBER( ttl7474_device::clock_w )
{
- m_clk = state & 1;
+ m_clk = state & 1;
update();
}
@@ -176,7 +176,7 @@ WRITE_LINE_MEMBER( ttl7474_device::clock_w )
WRITE_LINE_MEMBER( ttl7474_device::d_w )
{
- m_d = state & 1;
+ m_d = state & 1;
update();
}
@@ -187,7 +187,7 @@ WRITE_LINE_MEMBER( ttl7474_device::d_w )
READ_LINE_MEMBER( ttl7474_device::output_r )
{
- return m_output;
+ return m_output;
}
@@ -197,18 +197,18 @@ READ_LINE_MEMBER( ttl7474_device::output_r )
READ_LINE_MEMBER( ttl7474_device::output_comp_r )
{
- return m_output_comp;
+ return m_output_comp;
}
void ttl7474_device::init()
{
- m_clear = 1;
- m_preset = 1;
- m_clk = 1;
- m_d = 1;
-
- m_output = -1;
- m_last_clock = 1;
- m_last_output = -1;
- m_last_output_comp = -1;
+ m_clear = 1;
+ m_preset = 1;
+ m_clk = 1;
+ m_d = 1;
+
+ m_output = -1;
+ m_last_clock = 1;
+ m_last_output = -1;
+ m_last_output_comp = -1;
}