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hunter2: added serial interrupt handling (not working all that well yet)

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This commit is contained in:
mahlemiut 2014-03-13 06:32:51 +00:00
parent ab7a80001d
commit 0835d2bfc6
1 changed files with 37 additions and 9 deletions
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46
src/mess/drivers/hunter2.c
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@ -55,10 +55,12 @@ public:
DECLARE_WRITE8_MEMBER(port86_w);
DECLARE_WRITE8_MEMBER(portbb_w);
DECLARE_WRITE8_MEMBER(porte0_w);
TIMER_DEVICE_CALLBACK_MEMBER(a_timer);
DECLARE_PALETTE_INIT(hunter2);
DECLARE_DRIVER_INIT(hunter2);
DECLARE_WRITE_LINE_MEMBER(timer0_out);
DECLARE_WRITE_LINE_MEMBER(timer1_out);
DECLARE_WRITE_LINE_MEMBER(cts_w);
DECLARE_WRITE_LINE_MEMBER(rxd_w);
private:
UINT8 m_keydata;
@ -225,7 +227,6 @@ Bits 1,0,7,6: Contrast level.
WRITE8_MEMBER( hunter2_state::port80_w )
{
// bit 0 does something
}
WRITE8_MEMBER( hunter2_state::port81_w )
@ -236,11 +237,13 @@ WRITE8_MEMBER( hunter2_state::port81_w )
WRITE8_MEMBER( hunter2_state::port82_w )
{
m_rs232->write_dtr(data & 0x01);
logerror("DTR write %02x\n",data);
}
WRITE8_MEMBER( hunter2_state::port84_w )
{
m_rs232->write_rts(data & 0x01);
logerror("RTS write %02x\n",data);
}
WRITE8_MEMBER( hunter2_state::port86_w )
@ -257,6 +260,14 @@ Bit 3 = Enable RSTA interrupts
WRITE8_MEMBER( hunter2_state::portbb_w )
{
m_irq_mask = data;
if(!(data & 0x08))
m_maincpu->set_input_line(NSC800_RSTA, CLEAR_LINE);
if(!(data & 0x04))
m_maincpu->set_input_line(NSC800_RSTB, CLEAR_LINE);
if(!(data & 0x02))
m_maincpu->set_input_line(NSC800_RSTC, CLEAR_LINE);
logerror("SYS: IRQ mask set %02x\n",data);
}
/*
@ -342,18 +353,33 @@ static const mm58274c_interface rtc_intf =
1 /* first day of week */
};
TIMER_DEVICE_CALLBACK_MEMBER(hunter2_state::a_timer)
{
if BIT(m_irq_mask, 3)
m_maincpu->set_input_line(NSC800_RSTA, HOLD_LINE);
}
WRITE_LINE_MEMBER(hunter2_state::timer0_out)
{
if(state == ASSERT_LINE)
m_maincpu->set_input_line(INPUT_LINE_NMI, PULSE_LINE);
}
WRITE_LINE_MEMBER(hunter2_state::timer1_out)
{
if(m_irq_mask & 0x08)
m_maincpu->set_input_line(NSC800_RSTA, state);
}
WRITE_LINE_MEMBER(hunter2_state::cts_w)
{
if(BIT(m_irq_mask, 1))
{
m_maincpu->set_input_line(NSC800_RSTC, state);
printf("CTS: RSTC set %i\n",state);
}
}
WRITE_LINE_MEMBER(hunter2_state::rxd_w)
{
if(BIT(m_irq_mask, 2))
m_maincpu->set_input_line(NSC800_RSTB, ASSERT_LINE);
}
SLOT_INTERFACE_START( hunter2_rs232_devices )
SLOT_INTERFACE("null_modem", NULL_MODEM)
SLOT_INTERFACE_END
@ -390,9 +416,11 @@ static MACHINE_CONFIG_START( hunter2, hunter2_state )
MCFG_NSC810_PORTB_WRITE(WRITE8(hunter2_state,port01_w))
MCFG_NSC810_PORTC_READ(READ8(hunter2_state,port02_r))
MCFG_NSC810_TIMER0_OUT(WRITELINE(hunter2_state,timer0_out))
MCFG_NSC810_TIMER1_OUT(INPUTLINE("maincpu",NSC800_RSTA))
MCFG_NSC810_TIMER1_OUT(WRITELINE(hunter2_state,timer1_out))
MCFG_RS232_PORT_ADD("serial",hunter2_rs232_devices,NULL)
MCFG_RS232_CTS_HANDLER(WRITELINE(hunter2_state,cts_w))
MCFG_RS232_RXD_HANDLER(WRITELINE(hunter2_state,rxd_w))
MACHINE_CONFIG_END
/* ROM definition */