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fidel_clockdiv: remove unneeded code

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This commit is contained in:
hap 2021-02-09 00:19:39 +01:00
parent b9f94fe239
commit 81a4d2953b
2 changed files with 7 additions and 23 deletions
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22
src/mame/machine/fidel_clockdiv.cpp
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@ -18,29 +18,14 @@ TODO:
#include "machine/fidel_clockdiv.h"
// machine start/reset
// machine start
void fidel_clockdiv_state::machine_start()
{
// zerofill
m_div_config = 0;
m_read_tap = nullptr;
m_write_tap = nullptr;
// register for savestates
save_item(NAME(m_div_status));
save_item(NAME(m_div_config));
save_item(NAME(m_div_scale));
// dummy timer for cpu divider
m_div_timer = machine().scheduler().timer_alloc(timer_expired_delegate(), this);
}
void fidel_clockdiv_state::machine_reset()
{
div_refresh();
}
// input ports
@ -89,8 +74,7 @@ void fidel_clockdiv_state::div_refresh(ioport_value val)
m_maincpu->set_clock_scale(1.0);
m_div_status = ~0;
m_div_config = val;
m_div_scale = (m_div_config & 1) ? 0.25 : 0.5;
m_div_scale = (val & 1) ? 0.25 : 0.5;
// stop high frequency background timer if cpu divider is disabled
attotime period = (val) ? attotime::from_hz(m_maincpu->clock()) : attotime::never;
@ -105,7 +89,7 @@ void fidel_clockdiv_state::div_refresh(ioport_value val)
m_write_tap = nullptr;
}
if (m_div_config)
if (val)
{
address_space &program = m_maincpu->space(AS_PROGRAM);

8
src/mame/machine/fidel_clockdiv.h
View File

@ -24,7 +24,8 @@ public:
protected:
virtual void machine_start() override;
virtual void machine_reset() override;
virtual void machine_reset() override { div_refresh(); }
virtual void device_post_load() override { div_refresh(); }
// devices/pointers
required_device<cpu_device> m_maincpu;
@ -35,11 +36,10 @@ protected:
private:
inline void div_set_cpu_freq(offs_t offset);
memory_passthrough_handler *m_read_tap;
memory_passthrough_handler *m_write_tap;
memory_passthrough_handler *m_read_tap = nullptr;
memory_passthrough_handler *m_write_tap = nullptr;
u16 m_div_status;
ioport_value m_div_config;
double m_div_scale;
emu_timer *m_div_timer;
};