Merge branch 'master' of https://github.com/mamedev/mame

scripts/src/bus.lua

@@ -3042,6 +3042,8 @@ if (BUSES["SBUS"]~=null) then
 		MAME_DIR .. "src/devices/bus/sbus/bwtwo.h",
 		MAME_DIR .. "src/devices/bus/sbus/cgthree.cpp",
 		MAME_DIR .. "src/devices/bus/sbus/cgthree.h",
+		MAME_DIR .. "src/devices/bus/sbus/sunpc.cpp",
+		MAME_DIR .. "src/devices/bus/sbus/sunpc.h",
 		MAME_DIR .. "src/devices/bus/sbus/turbogx.cpp",
 		MAME_DIR .. "src/devices/bus/sbus/turbogx.h",
 		MAME_DIR .. "src/devices/bus/sbus/sbus.cpp",

src/devices/bus/sbus/sbus.cpp

@@ -7,16 +7,23 @@
 ***************************************************************************/
 
 #include "emu.h"
+
+// Display boards
 #include "bwtwo.h"
 #include "cgthree.h"
 #include "turbogx.h"
+
+// Accelerator boards
+#include "sunpc.h"
+
 #include "sbus.h"
 
 void sbus_cards(device_slot_interface &device)
 {
-	device.option_add("bwtwo", SBUS_BWTWO);      /* Sun bwtwo monochrome display board */
-	device.option_add("cgthree", SBUS_CGTHREE);  /* Sun cgthree color display board */
-	device.option_add("turbogx", SBUS_TURBOGX);  /* Sun TurboGX 8-bit color display board */
+	device.option_add("bwtwo",   SBUS_BWTWO);   /* Sun bwtwo monochrome display board */
+	device.option_add("cgthree", SBUS_CGTHREE); /* Sun cgthree color display board */
+	device.option_add("turbogx", SBUS_TURBOGX); /* Sun TurboGX 8-bit color display board */
+	device.option_add("sunpc",   SBUS_SUNPC);   /* Sun SunPC 5x86 Accelerator board */
 }
 
 DEFINE_DEVICE_TYPE(SBUS_SLOT, sbus_slot_device, "sbus_slot", "Sun SBus Slot")

src/devices/bus/sbus/sunpc.cpp

@@ -0,0 +1,71 @@
+// license:BSD-3-Clause
+// copyright-holders:Ryan Holtz
+/***************************************************************************
+
+    Sun SunPC 5x86 Accelerator (501-4230) skeleton
+
+	Notable parts on board:
+	- 1x AMD AM27C256 PLCC ROM
+	- 1x Motorola SunPC Accelerator 100-3069-03, mfr/date AANL9732
+	- 6x Cypress CY7B185-10VC 64kBit Static RAM
+	- 1x AMD 5x86 (under heatsink; markings unknown)
+
+***************************************************************************/
+
+#include "emu.h"
+#include "sunpc.h"
+
+DEFINE_DEVICE_TYPE(SBUS_SUNPC, sbus_sunpc_device, "sbus_sunpc", "Sun SunPC accelerator")
+
+void sbus_sunpc_device::mem_map(address_map &map)
+{
+	map(0x00000000, 0x01ffffff).rw(FUNC(sbus_sunpc_device::unknown_r), FUNC(sbus_sunpc_device::unknown_w));
+	map(0x00000000, 0x00007fff).r(FUNC(sbus_sunpc_device::rom_r));
+}
+
+ROM_START( sbus_sunpc )
+	ROM_REGION32_BE(0x8000, "prom", ROMREGION_ERASEFF)
+	ROM_LOAD( "sunw,501-1763-01.bin", 0x0000, 0x8000, CRC(171f50f8) SHA1(21c4c02bc5a3a0494301f19c54ba0e207568fb42))
+ROM_END
+
+const tiny_rom_entry *sbus_sunpc_device::device_rom_region() const
+{
+	return ROM_NAME( sbus_sunpc );
+}
+
+void sbus_sunpc_device::device_add_mconfig(machine_config &config)
+{
+}
+
+
+sbus_sunpc_device::sbus_sunpc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
+	: device_t(mconfig, SBUS_SUNPC, tag, owner, clock)
+	, device_sbus_card_interface(mconfig, *this)
+	, m_rom(*this, "prom")
+{
+}
+
+void sbus_sunpc_device::device_start()
+{
+}
+
+void sbus_sunpc_device::install_device()
+{
+	m_sbus->install_device(m_base, m_base + 0x1ffffff, *this, &sbus_sunpc_device::mem_map);
+}
+
+READ32_MEMBER(sbus_sunpc_device::unknown_r)
+{
+	logerror("%s: unknown_r: %08x & %08x\n", machine().describe_context(), offset << 2, mem_mask);
+	return 0;
+}
+
+WRITE32_MEMBER(sbus_sunpc_device::unknown_w)
+{
+	logerror("%s: unknown_w: %08x = %08x & %08x\n", machine().describe_context(), offset << 2, data, mem_mask);
+}
+
+READ32_MEMBER(sbus_sunpc_device::rom_r)
+{
+	return ((uint32_t*)m_rom->base())[offset];
+}

src/devices/bus/sbus/sunpc.h

@@ -0,0 +1,45 @@
+// license:BSD-3-Clause
+// copyright-holders:Ryan Holtz
+/***************************************************************************
+
+    Sun SunPC 5x86 Accelerator (501-4230) skeleton
+
+***************************************************************************/
+
+#ifndef MAME_BUS_SBUS_SUNPC_H
+#define MAME_BUS_SBUS_SUNPC_H
+
+#pragma once
+
+#include "sbus.h"
+
+
+class sbus_sunpc_device : public device_t, public device_sbus_card_interface
+{
+public:
+	// construction/destruction
+	sbus_sunpc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+protected:
+	// device_t overrides
+	virtual const tiny_rom_entry *device_rom_region() const override;
+	virtual void device_add_mconfig(machine_config &config) override;
+	virtual void device_start() override;
+
+	// device_sbus_slot_interface overrides
+	virtual void install_device() override;
+
+	DECLARE_READ32_MEMBER(unknown_r);
+	DECLARE_WRITE32_MEMBER(unknown_w);
+	DECLARE_READ32_MEMBER(rom_r);
+
+private:
+	void mem_map(address_map &map) override;
+
+	required_memory_region m_rom;
+};
+
+// device type definition
+DECLARE_DEVICE_TYPE(SBUS_SUNPC, sbus_sunpc_device)
+
+#endif // MAME_BUS_SBUS_SUNPC_H