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apple2: add SC-01 speech to the Mockingboard emulation [R. Belmont, O. Galibert]

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This commit is contained in:
arbee 2020-08-23 12:02:42 -04:00
parent 82d2eea5a9
commit 501157fbed
2 changed files with 78 additions and 2 deletions
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66
src/devices/bus/a2bus/a2mockingboard.cpp
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@ -30,7 +30,7 @@
// GLOBAL VARIABLES
//**************************************************************************
DEFINE_DEVICE_TYPE(A2BUS_MOCKINGBOARD, a2bus_mockingboard_device, "a2mockbd", "Sweet Micro Systems Mockingboard")
DEFINE_DEVICE_TYPE(A2BUS_MOCKINGBOARD, a2bus_mockingboard_device, "a2mockbd", "Sweet Micro Systems Mockingboard Sound/Speech I")
DEFINE_DEVICE_TYPE(A2BUS_PHASOR, a2bus_phasor_device, "a2phasor", "Applied Engineering Phasor")
DEFINE_DEVICE_TYPE(A2BUS_ECHOPLUS, a2bus_echoplus_device, "a2echop", "Street Electronics Echo Plus")
@ -64,6 +64,22 @@ void a2bus_ayboard_device::device_add_mconfig(machine_config &config)
m_ay2->add_route(ALL_OUTPUTS, "rspeaker", 1.0);
}
void a2bus_mockingboard_device::device_add_mconfig(machine_config &config)
{
add_common_devices(config);
m_via1->writepb_handler().set(FUNC(a2bus_mockingboard_device::via1_out_b));
m_via1->cb2_handler().set(FUNC(a2bus_mockingboard_device::write_via1_cb2));
AY8913(config, m_ay2, 1022727);
m_ay2->add_route(ALL_OUTPUTS, "rspeaker", 1.0);
VOTRAX_SC01(config, m_sc01, 1022727);
m_sc01->ar_callback().set(m_via1, FUNC(via6522_device::write_cb1));
m_sc01->add_route(ALL_OUTPUTS, "lspeaker", 1.0);
m_sc01->add_route(ALL_OUTPUTS, "rspeaker", 1.0);
}
void a2bus_phasor_device::device_add_mconfig(machine_config &config)
{
add_common_devices(config);
@ -111,7 +127,8 @@ a2bus_ayboard_device::a2bus_ayboard_device(const machine_config &mconfig, device
}
a2bus_mockingboard_device::a2bus_mockingboard_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
a2bus_ayboard_device(mconfig, A2BUS_MOCKINGBOARD, tag, owner, clock)
a2bus_ayboard_device(mconfig, A2BUS_MOCKINGBOARD, tag, owner, clock),
m_sc01(*this, "sc01")
{
}
@ -429,3 +446,48 @@ void a2bus_echoplus_device::write_c0nx(uint8_t offset, uint8_t data)
break;
}
}
void a2bus_mockingboard_device::device_reset()
{
m_porta1 = m_porta2 = m_portb1 = 0;
m_last_cb2_state = ASSERT_LINE;
}
WRITE_LINE_MEMBER( a2bus_mockingboard_device::write_via1_cb2 )
{
if ((state == CLEAR_LINE) && (m_last_cb2_state == ASSERT_LINE))
{
m_sc01->write(m_portb1);
}
m_last_cb2_state = state;
}
void a2bus_mockingboard_device::via1_out_b(uint8_t data)
{
m_portb1 = data;
if (!BIT(data, 2))
{
m_ay1->reset_w();
}
else
{
switch (data & 3)
{
case 0: // BDIR=0, BC1=0 (inactive)
break;
case 1: // BDIR=0, BC1=1 (read PSG)
m_porta1 = m_ay1->data_r();
break;
case 2: // BDIR=1, BC1=0 (write PSG)
m_ay1->data_w(m_porta1);
break;
case 3: // BDIR=1, BC1=1 (latch)
m_ay1->address_w(m_porta1);
break;
}
}
}

14
src/devices/bus/a2bus/a2mockingboard.h
View File

@ -15,6 +15,7 @@
#include "machine/6522via.h"
#include "sound/ay8910.h"
#include "sound/tms5220.h"
#include "sound/votrax.h"
//**************************************************************************
// TYPE DEFINITIONS
@ -61,6 +62,19 @@ class a2bus_mockingboard_device : public a2bus_ayboard_device
{
public:
a2bus_mockingboard_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual void via1_out_b(uint8_t data) override;
protected:
virtual void device_add_mconfig(machine_config &config) override;
virtual void device_reset() override;
required_device<votrax_sc01_device> m_sc01;
private:
DECLARE_WRITE_LINE_MEMBER(write_via1_cb2);
uint8_t m_portb1;
int m_last_cb2_state;
};
class a2bus_phasor_device : public a2bus_ayboard_device