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Merge pull request #498 from meesokim/patch-5

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[spc1000] Using timing difference for cassette deck motor on/off toggle
This commit is contained in:
R. Belmont 2015-12-13 13:31:24 -05:00
commit ac3f4f1762
1 changed files with 8 additions and 7 deletions
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15
src/mame/drivers/spc1000.cpp
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@ -154,7 +154,6 @@ class spc1000_state : public driver_device
public:
spc1000_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_motor(false)
, m_maincpu(*this, "maincpu")
, m_vdg(*this, "mc6847")
, m_cass(*this, "cassette")
@ -185,7 +184,7 @@ private:
UINT8 m_GMODE;
UINT16 m_page;
UINT8 *m_work_ram;
bool m_motor;
attotime m_time;
bool m_centronics_busy;
virtual void machine_start() override;
virtual void machine_reset() override;
@ -223,11 +222,12 @@ READ8_MEMBER(spc1000_state::iplk_r)
WRITE8_MEMBER( spc1000_state::cass_w )
{
bool m = BIT(data, 1) ? true : false;
attotime time = machine().scheduler().time();
m_cass->output(BIT(data, 0) ? -1.0 : 1.0);
if (m && !m_motor)
m_cass->change_state(m_cass->get_state() & CASSETTE_MASK_MOTOR ? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR);
m_motor = m;
if (BIT(data, 1) && ATTOSECONDS_IN_MSEC((time - m_time).as_attoseconds()) > 500) {
m_cass->change_state((m_cass->get_state() & CASSETTE_MASK_MOTOR) == CASSETTE_MOTOR_DISABLED ? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR);
m_time = time;
}
m_centronics->write_strobe(BIT(data, 2) ? true : false);
}
@ -403,13 +403,14 @@ void spc1000_state::machine_start()
// intialize banks 2 & 4 (write banks)
membank("bank2")->set_base(ram);
membank("bank4")->set_base(ram + 0x8000);
m_time = machine().scheduler().time();
}
void spc1000_state::machine_reset()
{
m_work_ram = auto_alloc_array_clear(machine(), UINT8, 0x10000);
m_IPLK = 1;
m_motor = false;
}
READ8_MEMBER(spc1000_state::mc6847_videoram_r)