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apricotf.cpp: Add daisy chain abstraction to vector interrupts

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This commit is contained in:
AJR 2020-05-04 14:04:00 -04:00
parent 3bd34a4cfb
commit 8b5980c3d1
1 changed files with 50 additions and 6 deletions
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56
src/mame/drivers/apricotf.cpp
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@ -55,6 +55,19 @@
// TYPE DEFINITIONS
//**************************************************************************
// ======================> f1_daisy_device
class f1_daisy_device : public device_t, public z80_daisy_chain_interface
{
public:
f1_daisy_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock = 0);
IRQ_CALLBACK_MEMBER(inta_cb);
protected:
virtual void device_start() override;
};
// ======================> f1_state
class f1_state : public driver_device
@ -92,11 +105,11 @@ private:
required_device<centronics_device> m_centronics;
required_device<output_latch_device> m_cent_data_out;
required_device<input_merger_device> m_irqs;
required_shared_ptr<uint16_t> m_p_scrollram;
required_shared_ptr<uint16_t> m_p_paletteram;
required_shared_ptr<u16> m_p_scrollram;
required_shared_ptr<u16> m_p_paletteram;
required_device<palette_device> m_palette;
uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
u32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
DECLARE_READ16_MEMBER(palette_r);
DECLARE_WRITE16_MEMBER(palette_w);
@ -117,7 +130,7 @@ private:
// VIDEO
//**************************************************************************
uint32_t f1_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
u32 f1_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
address_space &program = m_maincpu->space(AS_PROGRAM);
int lines = m_200_256 ? 200 : 256;
@ -128,7 +141,7 @@ uint32_t f1_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, co
for (int sx = 0; sx < 80; sx++)
{
uint16_t data = program.read_word(addr);
u16 data = program.read_word(addr);
if (m_40_80)
{
@ -168,7 +181,7 @@ READ16_MEMBER(f1_state::palette_r)
WRITE16_MEMBER(f1_state::palette_w)
{
uint8_t i,r,g,b;
u8 i,r,g,b;
COMBINE_DATA(&m_p_paletteram[offset]);
if(ACCESSING_BITS_0_7 && offset) //TODO: offset 0 looks bogus
@ -336,6 +349,34 @@ void apricotf_floppies(device_slot_interface &device)
}
DEFINE_DEVICE_TYPE(F1_DAISY, f1_daisy_device, "f1_daisy", "F1 daisy chain abstraction")
f1_daisy_device::f1_daisy_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: device_t(mconfig, F1_DAISY, tag, owner, clock)
, z80_daisy_chain_interface(mconfig, *this)
{
}
void f1_daisy_device::device_start()
{
}
IRQ_CALLBACK_MEMBER(f1_daisy_device::inta_cb)
{
device_z80daisy_interface *intf = daisy_get_irq_device();
if (intf != nullptr)
return intf->z80daisy_irq_ack();
else
return 0xff;
}
static const z80_daisy_config f1_daisy_config[] =
{
{ Z80SIO2_TAG },
{ Z80CTC_TAG },
{ nullptr }
};
//**************************************************************************
// MACHINE DRIVERS
@ -351,6 +392,9 @@ void f1_state::act_f1(machine_config &config)
I8086(config, m_maincpu, 14_MHz_XTAL / 4);
m_maincpu->set_addrmap(AS_PROGRAM, &f1_state::act_f1_mem);
m_maincpu->set_addrmap(AS_IO, &f1_state::act_f1_io);
m_maincpu->set_irq_acknowledge_callback("daisy", FUNC(f1_daisy_device::inta_cb));
F1_DAISY(config, "daisy").set_daisy_config(f1_daisy_config);
INPUT_MERGER_ANY_HIGH(config, "irqs").output_handler().set_inputline(m_maincpu, INPUT_LINE_IRQ0);