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tms1000: split execute_run into execute_one (nw)

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This commit is contained in:
hap 2017-12-22 23:49:18 +01:00
parent be9fea28e4
commit 50ee57f1b3
4 changed files with 175 additions and 158 deletions
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18
src/devices/cpu/tms1000/tms1000c.cpp
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@ -64,3 +64,21 @@ u32 tms1000c_cpu_device::decode_micro(u8 sel)
return decode;
}
// execute
void tms1000c_cpu_device::execute_run()
{
while (m_icount > 0)
{
if (m_halt_pin)
{
// not running (output pins remain unchanged)
m_icount = 0;
return;
}
m_icount--;
execute_one();
}
}

1
src/devices/cpu/tms1000/tms1000c.h
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@ -23,6 +23,7 @@ protected:
// overrides
virtual void device_add_mconfig(machine_config &config) override;
virtual u32 decode_micro(u8 sel) override;
virtual void execute_run() override;
virtual void op_br() override { op_br3(); } // 3-level stack
virtual void op_call() override { op_call3(); } // "

29
src/devices/cpu/tms1000/tms1k_base.cpp
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@ -144,7 +144,7 @@ void tms1k_base_device::device_start()
m_r = 0;
m_o = 0;
m_o_index = 0;
m_halt = false;
m_halt_pin = false;
m_cki_bus = 0;
m_c4 = 0;
m_p = 0;
@ -184,7 +184,7 @@ void tms1k_base_device::device_start()
save_item(NAME(m_r));
save_item(NAME(m_o));
save_item(NAME(m_o_index));
save_item(NAME(m_halt));
save_item(NAME(m_halt_pin));
save_item(NAME(m_cki_bus));
save_item(NAME(m_c4));
save_item(NAME(m_p));
@ -314,7 +314,7 @@ void tms1k_base_device::execute_set_input(int line, int state)
return;
// HALT pin (CMOS only)
m_halt = bool(state);
m_halt_pin = bool(state);
}
void tms1k_base_device::write_o_output(u8 index)
@ -604,22 +604,11 @@ void tms1k_base_device::op_sbl()
//-------------------------------------------------
// execute_run
// execute
//-------------------------------------------------
void tms1k_base_device::execute_run()
void tms1k_base_device::execute_one()
{
while (m_icount > 0)
{
m_icount--;
if (m_halt)
{
// not running (output pins remain unchanged)
m_icount = 0;
return;
}
switch (m_subcycle)
{
case 0:
@ -744,5 +733,13 @@ void tms1k_base_device::execute_run()
}
m_subcycle = (m_subcycle + 1) % 6;
}
void tms1k_base_device::execute_run()
{
while (m_icount > 0)
{
m_icount--;
execute_one();
}
}

5
src/devices/cpu/tms1000/tms1k_base.h
View File

@ -106,10 +106,11 @@ protected:
// device_execute_interface overrides
virtual u32 execute_min_cycles() const override { return 1; }
virtual u32 execute_max_cycles() const override { return 6; }
virtual u32 execute_max_cycles() const override { return 1; }
virtual u32 execute_input_lines() const override { return 1; }
virtual void execute_set_input(int line, int state) override;
virtual void execute_run() override;
virtual void execute_one();
// device_memory_interface overrides
virtual space_config_vector memory_space_config() const override;
@ -256,7 +257,7 @@ protected:
int m_subcycle;
int m_icount;
u8 m_o_index;
bool m_halt; // halt pin state
bool m_halt_pin;
u8 m_o_pins; // how many O pins
u8 m_r_pins; // how many R pins