diff --git a/scripts/target/mame/mess.lua b/scripts/target/mame/mess.lua
index 5afc2b8ae98..312fac4b71e 100644
--- a/scripts/target/mame/mess.lua
+++ b/scripts/target/mame/mess.lua
@@ -4695,6 +4695,7 @@ files {
 	MAME_DIR .. "src/mame/machine/nl_tp1985.cpp",
 	MAME_DIR .. "src/mame/drivers/palestra.cpp",
 	MAME_DIR .. "src/mame/machine/nl_palestra.cpp",
+	MAME_DIR .. "src/mame/drivers/philipsbo.cpp",
 	MAME_DIR .. "src/mame/drivers/mindset.cpp",
 	MAME_DIR .. "src/mame/drivers/gs6502.cpp",
 	MAME_DIR .. "src/mame/drivers/gs6809.cpp",
diff --git a/src/mame/drivers/philipsbo.cpp b/src/mame/drivers/philipsbo.cpp
new file mode 100644
index 00000000000..c9087ca16c4
--- /dev/null
+++ b/src/mame/drivers/philipsbo.cpp
@@ -0,0 +1,256 @@
+// license:BSD-3-Clause
+// copyright-holders:Ryan Holtz
+/******************************************************************************
+
+    Philips BO "Videosynthesizer Prototype" skeleton
+
+*******************************************************************************/
+
+#include "emu.h"
+
+#include "cpu/m68000/m68000.h"
+#include "imagedev/floppy.h"
+#include "machine/am79c90.h"
+#include "machine/hd63450.h"
+#include "machine/ncr5380n.h"
+#include "machine/nscsi_bus.h"
+#include "machine/wd_fdc.h"
+#include "machine/z80scc.h"
+#include "bus/nscsi/cd.h"
+#include "bus/nscsi/hd.h"
+#include "bus/rs232/rs232.h"
+
+#define VERBOSE         (1)
+#include "logmacro.h"
+
+namespace {
+
+class pbo_state : public driver_device
+{
+public:
+	pbo_state(const machine_config &mconfig, device_type type, const char *tag)
+		: driver_device(mconfig, type, tag)
+		, m_maincpu(*this, "maincpu")
+		, m_netcpu(*this, "netcpu")
+		, m_scc(*this, "scc")
+		, m_rs232(*this, "rs232%u", 0U)
+		, m_fdc(*this, "fdc")
+		, m_hdc(*this, "scsi:7:ncr5380n")
+		, m_dmac(*this, "dmac")
+		, m_lance(*this, "lance")
+		, m_main_ram_share(*this, "main_ram")
+		, m_net_ram_share(*this, "net_ram")
+	{ }
+
+	void pbo(machine_config &config);
+
+protected:
+	virtual void machine_start() override;
+	virtual void machine_reset() override;
+
+	void main_map(address_map &map);
+	void net_map(address_map &map);
+
+	required_device<m68010_device> m_maincpu;
+	required_device<m68010_device> m_netcpu;
+	required_device<scc85c30_device> m_scc;
+	required_device_array<rs232_port_device, 2> m_rs232;
+	required_device<mb8877_device> m_fdc;
+	required_device<ncr5380n_device> m_hdc;
+	required_device<hd63450_device> m_dmac;
+	required_device<am7990_device> m_lance;
+	required_shared_ptr<uint16_t> m_main_ram_share;
+	required_shared_ptr<uint16_t> m_net_ram_share;
+
+	uint16_t berr_r(offs_t offset);
+	void berr_w(offs_t offset, uint16_t data);
+	void scsi_irq_w(int state);
+	void dma_irq_w(int state);
+	void fdc_irq_w(int state);
+	void scc_irq_w(int state);
+	void net_irq_w(int state);
+	uint8_t fa0101_read();
+};
+
+void pbo_state::main_map(address_map &map)
+{
+	map(0x000000, 0x07ffff).ram().share(m_main_ram_share);
+	map(0x080000, 0xbfffff).rw(FUNC(pbo_state::berr_r), FUNC(pbo_state::berr_w));
+	map(0xf80000, 0xf8ffff).rom().region("maincpu", 0);
+	map(0xfa0000, 0xfa0001).rw(m_fdc, FUNC(mb8877_device::status_r), FUNC(mb8877_device::cmd_w)).umask16(0x00ff);
+	map(0xfa0030, 0xfa0031).rw(m_scc, FUNC(scc85c30_device::cb_r), FUNC(scc85c30_device::cb_w)).umask16(0x00ff);
+	map(0xfa0032, 0xfa0033).rw(m_scc, FUNC(scc85c30_device::db_r), FUNC(scc85c30_device::db_w)).umask16(0x00ff);
+	map(0xfa0034, 0xfa0035).rw(m_scc, FUNC(scc85c30_device::ca_r), FUNC(scc85c30_device::ca_w)).umask16(0x00ff);
+	map(0xfa0036, 0xfa0037).rw(m_scc, FUNC(scc85c30_device::da_r), FUNC(scc85c30_device::da_w)).umask16(0x00ff);
+	map(0xfa8400, 0xfa840f).rw(m_hdc, FUNC(ncr5380n_device::read), FUNC(ncr5380n_device::write)).umask16(0x00ff);
+	map(0xfa0100, 0xfa0101).r(FUNC(pbo_state::fa0101_read)).umask16(0x00ff);
+}
+
+void pbo_state::net_map(address_map &map)
+{
+	map(0x000000, 0x000fff).ram().share(m_net_ram_share); // Unknown RAM size
+	map(0xf00000, 0xf1ffff).ram();
+	map(0xf80000, 0xf83fff).rom().region("netcpu", 0);
+}
+
+uint16_t pbo_state::berr_r(offs_t offset)
+{
+	if(!machine().side_effects_disabled())
+	{
+		m_maincpu->set_buserror_details(0x080000 + offset*2, true, m_maincpu->get_fc());
+		m_maincpu->set_input_line(M68K_LINE_BUSERROR, ASSERT_LINE);
+		m_maincpu->set_input_line(M68K_LINE_BUSERROR, CLEAR_LINE);
+	}
+	return 0xff;
+}
+
+void pbo_state::berr_w(offs_t offset, uint16_t data)
+{
+	if(!machine().side_effects_disabled())
+	{
+		m_maincpu->set_buserror_details(0x080000 + offset*2, false, m_maincpu->get_fc());
+		m_maincpu->set_input_line(M68K_LINE_BUSERROR, ASSERT_LINE);
+		m_maincpu->set_input_line(M68K_LINE_BUSERROR, CLEAR_LINE);
+	}
+}
+
+void pbo_state::scsi_irq_w(int state)
+{
+	LOG("SCSI IRQ: %d\n", state);
+	m_maincpu->set_input_line(M68K_IRQ_5, state);
+}
+
+void pbo_state::dma_irq_w(int state)
+{
+	LOG("DMA IRQ: %d\n", state);
+}
+
+void pbo_state::fdc_irq_w(int state)
+{
+	LOG("FDC IRQ: %d\n", state);
+}
+
+void pbo_state::scc_irq_w(int state)
+{
+	LOG("DMA IRQ: %d\n", state);
+}
+
+void pbo_state::net_irq_w(int state)
+{
+	LOG("LANCE IRQ: %d\n", state);
+}
+
+// It's unclear what hardware this location corresponds to on the actual board.
+// If it's unmapped, which returns 0 by default, the system hangs with very little
+//   meaningful external access.
+// If bit 7 is set, the system defaults to using the serial console.
+uint8_t pbo_state::fa0101_read()
+{
+	LOG("Read from FA0101: 80\n");
+	return 0x80;
+}
+
+static INPUT_PORTS_START( pbo )
+INPUT_PORTS_END
+
+void pbo_state::machine_start()
+{
+}
+
+void pbo_state::machine_reset()
+{
+	uint16_t *src = (uint16_t*)memregion("maincpu")->base();
+	uint16_t *dst = &m_main_ram_share[0];
+	memcpy(dst, src, 8);
+
+	src = (uint16_t*)memregion("netcpu")->base();
+	dst = &m_net_ram_share[0];
+	memcpy(dst, src, 8);
+}
+
+static void pbo_scsi_devices(device_slot_interface &device)
+{
+	device.option_add("harddisk", NSCSI_HARDDISK);
+}
+
+static void pbo_floppies(device_slot_interface &device)
+{
+	device.option_add("35dd", FLOPPY_35_DD);
+}
+
+void pbo_state::pbo(machine_config &config)
+{
+	M68010(config, m_maincpu, 8_MHz_XTAL);
+	m_maincpu->set_addrmap(AS_PROGRAM, &pbo_state::main_map);
+
+	SCC85C30(config, m_scc, 10_MHz_XTAL); // Unknown PCLK
+	m_scc->configure_channels(4'915'200, 4'915'200, 4'915'200, 4'915'200);
+	m_scc->out_txda_callback().set(m_rs232[0], FUNC(rs232_port_device::write_txd));
+	m_scc->out_dtra_callback().set(m_rs232[0], FUNC(rs232_port_device::write_dtr));
+	m_scc->out_rtsa_callback().set(m_rs232[0], FUNC(rs232_port_device::write_rts));
+	m_scc->out_txdb_callback().set(m_rs232[1], FUNC(rs232_port_device::write_txd));
+	m_scc->out_dtrb_callback().set(m_rs232[1], FUNC(rs232_port_device::write_dtr));
+	m_scc->out_rtsb_callback().set(m_rs232[1], FUNC(rs232_port_device::write_rts));
+	m_scc->out_int_callback().set(FUNC(pbo_state::scc_irq_w));
+
+	RS232_PORT(config, m_rs232[0], default_rs232_devices, "terminal");
+	m_rs232[0]->cts_handler().set(m_scc[0], FUNC(scc85c30_device::ctsa_w));
+	m_rs232[0]->dcd_handler().set(m_scc[0], FUNC(scc85c30_device::dcda_w));
+	m_rs232[0]->rxd_handler().set(m_scc[0], FUNC(scc85c30_device::rxa_w));
+
+	RS232_PORT(config, m_rs232[1], default_rs232_devices, nullptr);
+	m_rs232[1]->cts_handler().set(m_scc[0], FUNC(scc85c30_device::ctsb_w));
+	m_rs232[1]->dcd_handler().set(m_scc[0], FUNC(scc85c30_device::dcdb_w));
+	m_rs232[1]->rxd_handler().set(m_scc[0], FUNC(scc85c30_device::rxb_w));
+
+	HD63450(config, m_dmac, 8_MHz_XTAL, m_maincpu); // MC68450 compatible
+	m_dmac->set_clocks(attotime::from_usec(32), attotime::from_nsec(450), attotime::from_usec(4), attotime::from_hz(15625/2)); // Guesses
+	m_dmac->set_burst_clocks(attotime::from_usec(32), attotime::from_nsec(450), attotime::from_nsec(50), attotime::from_nsec(50)); // Guesses
+	m_dmac->irq_callback().set(FUNC(pbo_state::dma_irq_w));
+	//m_dmac->dma_read<0>().set(m_hdc, FUNC(ncr5380n_device::dma_r));
+	//m_dmac->dma_write<0>().set(m_hdc, FUNC(ncr5380n_device::dma_w));
+
+	MB8877(config, m_fdc, 8_MHz_XTAL / 8); // Unknown clock
+	//m_fdc->set_force_ready(true);
+	m_fdc->intrq_wr_callback().set(FUNC(pbo_state::fdc_irq_w));
+	//m_fdc->drq_wr_callback().set(FUNC(pbo_state::fdc_drq_w));
+	FLOPPY_CONNECTOR(config, "fdc:0", pbo_floppies, "35dd", floppy_image_device::default_mfm_floppy_formats).enable_sound(false);
+
+	NSCSI_BUS(config, "scsi");
+
+	NSCSI_CONNECTOR(config, "scsi:0", pbo_scsi_devices, "harddisk");
+	NSCSI_CONNECTOR(config, "scsi:1", pbo_scsi_devices, nullptr);
+	NSCSI_CONNECTOR(config, "scsi:2", pbo_scsi_devices, nullptr);
+	NSCSI_CONNECTOR(config, "scsi:3", pbo_scsi_devices, nullptr);
+	NSCSI_CONNECTOR(config, "scsi:4", pbo_scsi_devices, nullptr);
+	NSCSI_CONNECTOR(config, "scsi:5", pbo_scsi_devices, nullptr);
+	NSCSI_CONNECTOR(config, "scsi:6", pbo_scsi_devices, nullptr);
+
+	NSCSI_CONNECTOR(config, "scsi:7").option_set("ncr5380n", NCR5380N).machine_config(
+		[this](device_t *device)
+		{
+			ncr5380n_device &adapter = downcast<ncr5380n_device &>(*device);
+
+			adapter.irq_handler().set(*this, FUNC(pbo_state::scsi_irq_w));
+		});
+
+	M68010(config, m_netcpu, 20_MHz_XTAL / 2); // Confirmed
+	m_netcpu->set_addrmap(AS_PROGRAM, &pbo_state::net_map);
+
+	AM7990(config, m_lance);
+	m_lance->intr_out().set(FUNC(pbo_state::net_irq_w));
+}
+
+ROM_START( pbo )
+	ROM_REGION(0x10000, "maincpu", 0)
+	ROM_LOAD16_BYTE( "even_4.2.bin", 0x0000, 0x8000, CRC(4a10eac1) SHA1(77ef3b17565cd58ccf86df753b30e4ed6212d729) )
+	ROM_LOAD16_BYTE( "odd_4.2.bin", 0x0001, 0x8000, CRC(bed19ea4) SHA1(f69264c192965f65ecc6e39130f3a4861a475f92) )
+
+	ROM_REGION(0x4000, "netcpu", 0)
+	ROM_LOAD16_BYTE( "knlrom10_4.2_h.bin", 0x0000, 0x2000, CRC(28ecadca) SHA1(0eca5b407c7d4fc1312b96ccb486952206d627a9) )
+	ROM_LOAD16_BYTE( "knlrom10_4.2_l.bin", 0x0001, 0x2000, CRC(40bba894) SHA1(924979ea7e383cb76bc68c785933bb5595446eae) )
+ROM_END
+
+} // Anonymous namespace
+
+COMP( 1987, pbo,      0,      0,      pbo,      pbo,      pbo_state, empty_init, "Philips",    "BO (Videosynthesizer Prototype)", MACHINE_IS_SKELETON )
diff --git a/src/mame/mame.lst b/src/mame/mame.lst
index b71840f4f58..4f4e3052cbe 100644
--- a/src/mame/mame.lst
+++ b/src/mame/mame.lst
@@ -34624,6 +34624,9 @@ kov3hd101
 phc25                           //
 phc25j                          //
 
+@source:philipsbo.cpp
+pbo                             // (c) 1987 Philips
+
 @source:phoenix.cpp
 avefenix                        // bootleg (Video Game)
 avefenixl                       // bootleg (Laguna)
diff --git a/src/mame/mess.flt b/src/mame/mess.flt
index 04f9f7b266f..8521372ca94 100644
--- a/src/mame/mess.flt
+++ b/src/mame/mess.flt
@@ -781,6 +781,7 @@ pes.cpp
 pet.cpp
 pg685.cpp
 phc25.cpp
+philipsbo.cpp
 phunsy.cpp
 picno.cpp
 pimps.cpp