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fidelbase: small refactor (nw)

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This commit is contained in:
hap 2019-03-29 19:10:18 +01:00
parent 5aecde7b83
commit a0d2c0c25c
2 changed files with 16 additions and 7 deletions
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3
src/mame/includes/fidelbase.h
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@ -41,7 +41,7 @@ public:
// in case reset button is directly tied to maincpu reset pin // in case reset button is directly tied to maincpu reset pin
virtual DECLARE_INPUT_CHANGED_MEMBER(reset_button) { m_maincpu->set_input_line(INPUT_LINE_RESET, newval ? ASSERT_LINE : CLEAR_LINE); } virtual DECLARE_INPUT_CHANGED_MEMBER(reset_button) { m_maincpu->set_input_line(INPUT_LINE_RESET, newval ? ASSERT_LINE : CLEAR_LINE); }
DECLARE_INPUT_CHANGED_MEMBER(div_changed); DECLARE_INPUT_CHANGED_MEMBER(div_changed) { div_refresh(newval); }
protected: protected:
// devices/pointers // devices/pointers
@ -71,6 +71,7 @@ protected:
u8 div_trampoline_r(offs_t offset); u8 div_trampoline_r(offs_t offset);
void div_set_cpu_freq(offs_t offset); void div_set_cpu_freq(offs_t offset);
void div_trampoline(address_map &map); void div_trampoline(address_map &map);
void div_refresh(ioport_value val = 0xff);
u16 m_div_status; u16 m_div_status;
ioport_value m_div_config; ioport_value m_div_config;
emu_timer *m_div_timer; emu_timer *m_div_timer;

20
src/mame/machine/fidelbase.cpp
View File

@ -66,9 +66,7 @@ void fidelbase_state::machine_reset()
chessbase_state::machine_reset(); chessbase_state::machine_reset();
// init cpu divider (optional) // init cpu divider (optional)
ioport_port *inp = ioport("div_config"); div_refresh();
if (inp != nullptr)
div_changed(*inp->field(0x03), nullptr, 0, inp->read());
} }
@ -139,14 +137,24 @@ void fidelbase_state::div_trampoline(address_map &map)
map(0x0000, 0xffff).rw(FUNC(fidelbase_state::div_trampoline_r), FUNC(fidelbase_state::div_trampoline_w)); map(0x0000, 0xffff).rw(FUNC(fidelbase_state::div_trampoline_r), FUNC(fidelbase_state::div_trampoline_w));
} }
INPUT_CHANGED_MEMBER(fidelbase_state::div_changed) void fidelbase_state::div_refresh(ioport_value val)
{ {
if (val == 0xff)
{
// bail out if there is no cpu divider
ioport_port *inp = ioport("div_config");
if (inp == nullptr)
return;
val = inp->read();
}
m_maincpu->set_clock_scale(1.0); m_maincpu->set_clock_scale(1.0);
m_div_status = ~0; m_div_status = ~0;
m_div_config = newval; m_div_config = val;
// stop high frequency background timer if cpu divider is disabled // stop high frequency background timer if cpu divider is disabled
attotime period = (newval) ? attotime::from_hz(m_maincpu->clock()) : attotime::never; attotime period = (val) ? attotime::from_hz(m_maincpu->clock()) : attotime::never;
m_div_timer->adjust(period, 0, period); m_div_timer->adjust(period, 0, period);
} }