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alphatro: try adding an fdc irq register (nw)

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This commit is contained in:
cracyc 2017-07-19 21:20:18 -05:00
parent 1cf456c8e8
commit 08af3d9f61
1 changed files with 16 additions and 2 deletions
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18
src/mame/drivers/alphatro.cpp
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@ -84,11 +84,13 @@ public:
DECLARE_WRITE8_MEMBER(port20_w);
DECLARE_READ8_MEMBER(port30_r);
DECLARE_WRITE8_MEMBER(port30_w);
DECLARE_READ8_MEMBER(portf0_r);
DECLARE_WRITE8_MEMBER(portf0_w);
DECLARE_INPUT_CHANGED_MEMBER(alphatro_break);
DECLARE_WRITE_LINE_MEMBER(txdata_callback);
DECLARE_WRITE_LINE_MEMBER(write_usart_clock);
DECLARE_WRITE_LINE_MEMBER(hrq_w);
DECLARE_WRITE_LINE_MEMBER(fdc_irq_w);
DECLARE_PALETTE_INIT(alphatro);
TIMER_DEVICE_CALLBACK_MEMBER(timer_c);
TIMER_DEVICE_CALLBACK_MEMBER(timer_p);
@ -103,7 +105,7 @@ private:
u8 m_cass_data[4];
u8 m_port_10, m_port_20, m_port_30, m_port_f0;
bool m_cass_state;
bool m_cassold;
bool m_cassold, m_fdc_irq;
virtual void machine_start() override;
virtual void machine_reset() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
@ -249,6 +251,11 @@ WRITE8_MEMBER( alphatro_state::port30_w )
m_port_30 = data;
}
READ8_MEMBER( alphatro_state::portf0_r )
{
return m_fdc_irq << 6;
}
WRITE8_MEMBER( alphatro_state::portf0_w)
{
if ((data & 0x1) && !(m_port_f0))
@ -396,7 +403,7 @@ static ADDRESS_MAP_START( alphatro_io, AS_IO, 8, alphatro_state )
AM_RANGE(0x60, 0x68) AM_DEVREADWRITE("dmac", i8257_device, read, write)
// 8259 PIT
//AM_RANGE(0x70, 0x72) AM_DEVREADWRITE("
AM_RANGE(0xf0, 0xf0) AM_DEVREAD("fdc", upd765a_device, msr_r) AM_WRITE(portf0_w)
AM_RANGE(0xf0, 0xf0) AM_READ(portf0_r) AM_WRITE(portf0_w)
AM_RANGE(0xf8, 0xf8) AM_DEVREADWRITE("fdc", upd765a_device, fifo_r, fifo_w)
AM_RANGE(0xf9, 0xf9) AM_DEVREAD("fdc", upd765a_device, msr_r)
ADDRESS_MAP_END
@ -553,6 +560,7 @@ void alphatro_state::machine_reset()
m_cass_data[0] = m_cass_data[1] = m_cass_data[2] = m_cass_data[3] = 0;
m_cass_state = 0;
m_cassold = 0;
m_fdc_irq = 0;
m_usart->write_rxd(0);
m_beep->set_state(0);
}
@ -603,6 +611,11 @@ TIMER_DEVICE_CALLBACK_MEMBER(alphatro_state::timer_p)
}
}
WRITE_LINE_MEMBER(alphatro_state::fdc_irq_w)
{
m_fdc_irq = state ? false : true;
}
WRITE_LINE_MEMBER(alphatro_state::hrq_w)
{
m_maincpu->set_input_line(INPUT_LINE_HALT, state);
@ -639,6 +652,7 @@ static MACHINE_CONFIG_START( alphatro )
/* Devices */
MCFG_UPD765A_ADD("fdc", true, true)
MCFG_UPD765_INTRQ_CALLBACK(WRITELINE(alphatro_state, fdc_irq_w))
MCFG_UPD765_DRQ_CALLBACK(DEVWRITELINE("dmac", i8257_device, dreq2_w))
MCFG_FLOPPY_DRIVE_ADD("fdc:0", alphatro_floppies, "525dd", floppy_image_device::default_floppy_formats)
MCFG_FLOPPY_DRIVE_ADD("fdc:1", alphatro_floppies, "525dd", floppy_image_device::default_floppy_formats)