(MESS) New skeleton [Al Kossow, Robbbert]

-------------------------------------------------
IBM6580 DisplayWriter.

.gitattributes

@@ -6297,6 +6297,7 @@ src/mess/drivers/hpz80unk.c svneol=native#text/plain
 src/mess/drivers/ht68k.c svneol=native#text/plain
 src/mess/drivers/huebler.c svneol=native#text/plain
 src/mess/drivers/hx20.c svneol=native#text/plain
+src/mess/drivers/ibm6580.c svneol=native#text/plain
 src/mess/drivers/ibmpc.c svneol=native#text/plain
 src/mess/drivers/ie15.c svneol=native#text/plain
 src/mess/drivers/if800.c svneol=native#text/plain

src/mess/drivers/ibm6580.c

@@ -0,0 +1,100 @@
+/***************************************************************************
+
+IBM 6580 DisplayWriter.
+
+2013-08-19 Skeleton driver.
+
+A green-screen dedicated word-processing workstation. It uses 20cm floppy
+disks. It could have up to 224k of ram.
+
+ToDo:
+- Everything!
+- The roms need to be loaded properly.
+- Chargen rom is not dumped.
+
+****************************************************************************/
+
+#include "emu.h"
+#include "cpu/i86/i86.h"
+
+class ibm6580_state : public driver_device
+{
+public:
+	ibm6580_state(const machine_config &mconfig, device_type type, const char *tag)
+		: driver_device(mconfig, type, tag)
+		, m_maincpu(*this, "maincpu")
+	{ }
+
+	const UINT8 *m_p_chargen;
+	void palette_init_ibm6580();
+	UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+private:
+	virtual void machine_reset();
+	required_device<cpu_device> m_maincpu;
+};
+
+
+static ADDRESS_MAP_START(ibm6580_mem, AS_PROGRAM, 16, ibm6580_state)
+	ADDRESS_MAP_UNMAP_HIGH
+	AM_RANGE(0x00000,0xfdfff) AM_RAM
+	AM_RANGE(0xfe000,0xfffff) AM_ROM AM_REGION("user1", 0)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START(ibm6580_io, AS_IO, 16, ibm6580_state)
+	//ADDRESS_MAP_UNMAP_HIGH
+	//ADDRESS_MAP_GLOBAL_MASK(0xff)
+ADDRESS_MAP_END
+
+
+/* Input ports */
+static INPUT_PORTS_START( ibm6580 )
+INPUT_PORTS_END
+
+UINT32 ibm6580_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+{
+	return 0;
+}
+
+PALETTE_INIT_MEMBER( ibm6580_state, ibm6580 )
+{
+	palette_set_color_rgb( machine(), 0, 0, 0, 0 ); /* Black */
+	palette_set_color_rgb( machine(), 1, 0, 255, 0 );   /* Full */
+	palette_set_color_rgb( machine(), 2, 0, 128, 0 );   /* Dimmed */
+}
+
+void ibm6580_state::machine_reset()
+{
+	m_p_chargen = memregion("chargen")->base();
+}
+
+static MACHINE_CONFIG_START( ibm6580, ibm6580_state )
+	/* basic machine hardware */
+	MCFG_CPU_ADD("maincpu", I8086, 4000000) // no idea
+	MCFG_CPU_PROGRAM_MAP(ibm6580_mem)
+	MCFG_CPU_IO_MAP(ibm6580_io)
+
+	/* video hardware */
+	MCFG_SCREEN_ADD("screen", RASTER)
+	MCFG_SCREEN_REFRESH_RATE(60)
+	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
+	MCFG_SCREEN_UPDATE_DRIVER(ibm6580_state, screen_update)
+	MCFG_SCREEN_SIZE(640, 240)
+	MCFG_SCREEN_VISIBLE_AREA(0, 639, 0, 239)
+	MCFG_PALETTE_LENGTH(3)
+	MCFG_PALETTE_INIT_OVERRIDE(ibm6580_state, ibm6580)
+MACHINE_CONFIG_END
+
+/* ROM definition */
+ROM_START( ibm6580 )
+	ROM_REGION16_BE( 0x2000, "user1", 0 )
+	ROM_LOAD16_BYTE("8493823.bin", 0x0001, 0x1000, CRC(0bea066f) SHA1(8a42e24b609df7d9ca9cd52929702a61f7024635))
+	ROM_LOAD16_BYTE("8493822.bin", 0x0000, 0x1000, CRC(6e67f41a) SHA1(600fee505efe5cbcc8bdbab91d233378c7be4f12))
+
+	ROM_REGION( 0x2000, "chargen", 0 )
+	ROM_LOAD( "8493383.bin", 0x0000, 0x2000, NO_DUMP )
+ROM_END
+
+/* Driver */
+
+/*    YEAR  NAME     PARENT  COMPAT   MACHINE   INPUT    CLASS          INIT  COMPANY            FULLNAME       FLAGS */
+COMP( 1980, ibm6580, 0,      0,       ibm6580,  ibm6580, driver_device,  0,  "IBM", "IBM 6580 DisplayWriter", GAME_IS_SKELETON)

src/mess/mess.lst

@@ -2249,3 +2249,5 @@ cdc721
 seattle
 c8002
 sbrain
+ibm6580
+

src/mess/mess.mak

@@ -2387,6 +2387,7 @@ $(MESSOBJ)/skeleton.a:          \
 	$(MESS_DRIVERS)/harriet.o   \
 	$(MESS_DRIVERS)/hpz80unk.o  \
 	$(MESS_DRIVERS)/ht68k.o     \
+	$(MESS_DRIVERS)/ibm6580.o   \
 	$(MESS_DRIVERS)/ie15.o      \
 	$(MESS_DRIVERS)/if800.o     \
 	$(MESS_DRIVERS)/indiana.o   \