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Diffstat (limited to 'src/mame/drivers/jade.cpp')
-rw-r--r--src/mame/drivers/jade.cpp13
1 files changed, 2 insertions, 11 deletions
diff --git a/src/mame/drivers/jade.cpp b/src/mame/drivers/jade.cpp
index 73dbe093cff..6718a3e2d61 100644
--- a/src/mame/drivers/jade.cpp
+++ b/src/mame/drivers/jade.cpp
@@ -26,15 +26,11 @@ public:
jade_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
- , m_sio(*this, "sio")
{ }
- DECLARE_WRITE_LINE_MEMBER(clock_tick);
-
private:
virtual void machine_reset() override;
required_device<cpu_device> m_maincpu;
- required_device<z80sio_device> m_sio;
};
@@ -56,12 +52,6 @@ ADDRESS_MAP_END
static INPUT_PORTS_START( jade )
INPUT_PORTS_END
-// source of baud frequency is unknown, so we invent a clock
-WRITE_LINE_MEMBER( jade_state::clock_tick )
-{
- m_sio->txca_w(state);
- m_sio->rxca_w(state);
-}
void jade_state::machine_reset()
{
@@ -74,7 +64,8 @@ static MACHINE_CONFIG_START( jade )
MCFG_CPU_IO_MAP(jade_io)
MCFG_DEVICE_ADD("uart_clock", CLOCK, 153600)
- MCFG_CLOCK_SIGNAL_HANDLER(WRITELINE(jade_state, clock_tick))
+ MCFG_CLOCK_SIGNAL_HANDLER(DEVWRITELINE("sio", z80sio_device, txca_w))
+ MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("sio", z80sio_device, rxca_w))
/* Devices */
MCFG_Z80SIO_ADD("sio", XTAL_4MHz, 0, 0, 0, 0)