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// license:BSD-3-Clause
// copyright-holders:Nigel Barnes
/**********************************************************************
Acorn Versatile Interface Board
Part No. 200,009
http://chrisacorns.computinghistory.org.uk/8bit_Upgrades/Acorn_UIB.html
**********************************************************************/
#include "emu.h"
#include "vib.h"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(ACORN_VIB, acorn_vib_device, "acorn_vib", "Acorn Versatile Interface Board")
//-------------------------------------------------
// device_add_mconfig - add device configuration
//-------------------------------------------------
MACHINE_CONFIG_START(acorn_vib_device::device_add_mconfig)
INPUT_MERGER_ANY_HIGH(config, m_irqs).output_handler().set(FUNC(acorn_vib_device::irq_w));
VIA6522(config, m_via6522, XTAL(1'000'000));
m_via6522->writepa_handler().set("cent_data_out", FUNC(output_latch_device::bus_w));
m_via6522->ca2_handler().set(m_centronics, FUNC(centronics_device::write_strobe));
m_via6522->irq_handler().set(m_irqs, FUNC(input_merger_device::in_w<0>));
CENTRONICS(config, m_centronics, centronics_devices, "printer");
m_centronics->ack_handler().set(m_via6522, FUNC(via6522_device::write_ca1));
m_centronics->busy_handler().set(m_via6522, FUNC(via6522_device::write_pa7));
MCFG_CENTRONICS_OUTPUT_LATCH_ADD("cent_data_out", "centronics")
I8255(config, m_ppi8255, 0);
ACIA6850(config, m_acia, 0);
m_acia->txd_handler().set(m_rs232, FUNC(rs232_port_device::write_txd));
m_acia->rts_handler().set(m_rs232, FUNC(rs232_port_device::write_rts));
m_acia->irq_handler().set(m_irqs, FUNC(input_merger_device::in_w<1>));
RS232_PORT(config, m_rs232, default_rs232_devices, nullptr);
m_rs232->rxd_handler().set(m_acia, FUNC(acia6850_device::write_rxd));
m_rs232->cts_handler().set(m_acia, FUNC(acia6850_device::write_cts));
m_rs232->dcd_handler().set(m_acia, FUNC(acia6850_device::write_dcd));
CLOCK(config, m_acia_clock, 1.8432_MHz_XTAL);
m_acia_clock->signal_handler().set(FUNC(acorn_vib_device::write_acia_clock));
MACHINE_CONFIG_END
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// acorn_vib_device - constructor
//-------------------------------------------------
acorn_vib_device::acorn_vib_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, ACORN_VIB, tag, owner, clock)
, device_acorn_bus_interface(mconfig, *this)
, m_ppi8255(*this, "ppi8255")
, m_via6522(*this, "via6522")
, m_acia(*this, "acia6850")
, m_acia_clock(*this, "acia_clock")
, m_centronics(*this, "centronics")
, m_rs232(*this, "rs232")
, m_irqs(*this, "irqs")
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void acorn_vib_device::device_start()
{
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void acorn_vib_device::device_reset()
{
address_space &space = m_bus->memspace();
space.install_readwrite_handler(0x0c00, 0x0c0f, 0, 0x10, 0, read8sm_delegate(FUNC(via6522_device::read), m_via6522.target()), write8sm_delegate(FUNC(via6522_device::write), m_via6522.target()));
space.install_readwrite_handler(0x0c20, 0x0c21, 0, 0x1e, 0, read8_delegate(FUNC(acia6850_device::read), m_acia.target()), write8_delegate(FUNC(acia6850_device::write), m_acia.target()));
space.install_readwrite_handler(0x0c40, 0x0c43, 0, 0x1c, 0, read8sm_delegate(FUNC(i8255_device::read), m_ppi8255.target()), write8sm_delegate(FUNC(i8255_device::write), m_ppi8255.target()));
}
//**************************************************************************
// IMPLEMENTATION
//**************************************************************************
WRITE_LINE_MEMBER(acorn_vib_device::write_acia_clock)
{
m_acia->write_txc(state);
m_acia->write_rxc(state);
}
WRITE_LINE_MEMBER(acorn_vib_device::irq_w)
{
m_bus->irq_w(state);
}
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