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-rw-r--r--src/devices/bus/acorn/system/vib.cpp116
1 files changed, 116 insertions, 0 deletions
diff --git a/src/devices/bus/acorn/system/vib.cpp b/src/devices/bus/acorn/system/vib.cpp
new file mode 100644
index 00000000000..c0d739fcbc4
--- /dev/null
+++ b/src/devices/bus/acorn/system/vib.cpp
@@ -0,0 +1,116 @@
+// 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()
+{
+ set_acorn_bus_device();
+ address_space &space = m_bus->memspace();
+
+ space.install_readwrite_handler(0x0c00, 0x0c0f, 0, 0x10, 0, read8_delegate(FUNC(via6522_device::read), m_via6522.target()), write8_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, read8_delegate(FUNC(i8255_device::read), m_ppi8255.target()), write8_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);
+}