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sfrj/idpartner.cpp add custom floppy drive z80 daisy chain device, fdc ready is tied low

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This commit is contained in:
Miodrag Milanovic 2024-02-11 19:38:49 +01:00
parent e4f44632c7
commit dcb8f6a391
1 changed files with 46 additions and 3 deletions
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49
src/mame/sfrj/idpartner.cpp
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@ -33,6 +33,48 @@
#include "imagedev/floppy.h"
// Partner use for all pheriperials Z80 daisy chain, and since Intel 8272
// does not support it, there is actual implementation done in logic on the
// board, that does clear interrupt status on reset and acknowledge
class idpartner_floppy_daisy_device : public device_t, public device_z80daisy_interface
{
public:
idpartner_floppy_daisy_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock = 0);
virtual ~idpartner_floppy_daisy_device() {};
// callbacks
auto int_handler() { return m_int_handler.bind(); }
void set_vector(uint8_t vector) { m_vector = vector; }
void int_w(int state) { m_int = state; m_int_handler(state); }
protected:
virtual void device_start() override { save_item(NAME(m_int)); }
virtual void device_reset() override { m_int = CLEAR_LINE; }
// z80daisy_interface overrides
virtual int z80daisy_irq_state() override { return m_int ? Z80_DAISY_INT : 0; }
virtual int z80daisy_irq_ack() override { m_int = CLEAR_LINE; return m_vector; }
virtual void z80daisy_irq_reti() override { }
private:
devcb_write_line m_int_handler;
int m_int;
int m_vector;
};
DEFINE_DEVICE_TYPE(IDPARTNER_FLOPPY_DAISY, idpartner_floppy_daisy_device, "idpartner_floppy_daisy", "Iskra Delta Partner floppy daisy chain device")
idpartner_floppy_daisy_device::idpartner_floppy_daisy_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: device_t(mconfig, IDPARTNER_FLOPPY_DAISY, tag, owner, clock)
, device_z80daisy_interface(mconfig, *this)
, m_int_handler(*this)
, m_int(0)
, m_vector(0xff)
{
}
namespace {
class idpartner_state : public driver_device
@ -91,7 +133,7 @@ private:
required_device<z80sio_device> m_sio2;
required_device<z80ctc_device> m_ctc;
required_device<i8272a_device> m_fdc;
required_device<z80daisy_generic_device> m_fdc_daisy;
required_device<idpartner_floppy_daisy_device> m_fdc_daisy;
required_device<mc14411_device> m_brg;
required_device_array<rs232_port_device,4> m_serial;
std::unique_ptr<u8[]> m_ram;
@ -261,11 +303,12 @@ void idpartner_state::partner_base(machine_config &config)
m_ctc->zc_callback<0>().set(m_ctc, FUNC(z80ctc_device::trg1));
m_ctc->zc_callback<2>().set(m_ctc, FUNC(z80ctc_device::trg3)); // optional
Z80DAISY_GENERIC(config, m_fdc_daisy, 0xff);
IDPARTNER_FLOPPY_DAISY(config, m_fdc_daisy);
m_fdc_daisy->int_handler().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
I8272A(config, m_fdc, 8_MHz_XTAL);
I8272A(config, m_fdc, 8_MHz_XTAL, false);
m_fdc->intrq_wr_callback().set(FUNC(idpartner_state::fdc_int_w));
m_fdc->ready_w(false);
FLOPPY_CONNECTOR(config, "fdc:0", partner_floppies, "fdd", floppy_image_device::default_mfm_floppy_formats).enable_sound(true);
FLOPPY_CONNECTOR(config, "fdc:1", partner_floppies, nullptr, floppy_image_device::default_mfm_floppy_formats).enable_sound(true);