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-rw-r--r--src/mame/drivers/vt320.c125
1 files changed, 125 insertions, 0 deletions
diff --git a/src/mame/drivers/vt320.c b/src/mame/drivers/vt320.c
new file mode 100644
index 00000000000..ee452a5852d
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+++ b/src/mame/drivers/vt320.c
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+// license:BSD-3-Clause
+// copyright-holders:Miodrag Milanovic, Jonathan Gevaryahu
+/***************************************************************************
+
+ DEC VT320
+
+ 30/06/2009 Skeleton driver.
+
+****************************************************************************/
+
+#include "emu.h"
+#include "cpu/mcs51/mcs51.h"
+#include "machine/ram.h"
+
+
+class vt320_state : public driver_device
+{
+public:
+ vt320_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag) ,
+ m_maincpu(*this, "maincpu"),
+ m_ram(*this, RAM_TAG) { }
+
+ virtual void machine_reset();
+ virtual void video_start();
+ UINT32 screen_update_vt320(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+ required_device<cpu_device> m_maincpu;
+ required_device<ram_device> m_ram;
+};
+
+/*
+
+Partlist :
+
+Siemens SAB8031A-16-P
+ROMless version of the 8051 microcontroller, running at 16 MHz.
+Motorola MC2681P
+Dual Universal Asynchronous Receiver/Transmitter (DUART), 40-pin package.
+Toshiba TC53512AP
+ROM, 512K bits = 64K bytes. 28-pin package.
+Toshiba TC5565APL-12, 2 off
+Static RAM, 64K bit = 8K byte.
+ST TDA1170N
+Vertical deflection system IC.
+UC 80343Q
+20 pins. Unknown.
+UC 80068Q
+20 pins. Unknown.
+Motorola SN74LS157NQST
+16 pins. Quad 2-to-1 multiplexer.
+Microchip ER5911
+8 pins. Serial EEPROM. 1K bits = 128 bytes.
+Texas Inst. 749X 75146
+8 pins. Unknown.
+Signetics? 74LS373N
+8-bit D-type latch. This has eight inputs and eight outputs.
+*/
+static ADDRESS_MAP_START(vt320_mem, AS_PROGRAM, 8, vt320_state)
+ AM_RANGE(0x0000, 0xffff) AM_ROM
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START(vt320_io, AS_IO, 8, vt320_state)
+ADDRESS_MAP_END
+
+/* Input ports */
+static INPUT_PORTS_START( vt320 )
+INPUT_PORTS_END
+
+void vt320_state::machine_reset()
+{
+ memset(m_ram->pointer(),0,16*1024);
+}
+
+void vt320_state::video_start()
+{
+}
+
+UINT32 vt320_state::screen_update_vt320(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+{
+ return 0;
+}
+
+
+static MACHINE_CONFIG_START( vt320, vt320_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", I8051, XTAL_16MHz)
+ MCFG_CPU_PROGRAM_MAP(vt320_mem)
+ MCFG_CPU_IO_MAP(vt320_io)
+
+
+ /* video hardware */
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_REFRESH_RATE(50)
+ MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
+ MCFG_SCREEN_SIZE(640, 480)
+ MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 480-1)
+ MCFG_SCREEN_UPDATE_DRIVER(vt320_state, screen_update_vt320)
+ MCFG_SCREEN_PALETTE("palette")
+
+ MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette")
+
+ /* internal ram */
+ MCFG_RAM_ADD(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("16K")
+MACHINE_CONFIG_END
+
+/* ROM definition */
+ROM_START( vt320 )
+ ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
+ ROM_DEFAULT_BIOS( "vt320" )
+ //DOL: http://web.archive.org/web/20060905115711/http://cmcnabb.cc.vt.edu/dec94mds/vt320dol.txt
+ ROM_SYSTEM_BIOS( 0, "vt320v11", "VT320 V1.1" )
+ // 23-054E7 below can also appear (same contents?) as 23-048E7 which is a mask rom
+ ROMX_LOAD( "23-054e7.e9", 0x0000, 0x10000, CRC(be98f9a4) SHA1(b8044d42ffaadb734fbd047fbca9c8aadeb0bf6c), ROM_BIOS(1)) // EPROM
+ ROM_SYSTEM_BIOS( 1, "vt320", "VT320 V1.2" )
+ ROMX_LOAD( "23-104e7.e9", 0x0000, 0x10000, CRC(5f419b5a) SHA1(dbc429b32d6baefd8a56862717d6e7fea1fb0c1c), ROM_BIOS(2))
+ROM_END
+
+/* Driver */
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
+COMP( 1987, vt320, 0, 0, vt320, vt320, driver_device, 0, "Digital Equipment Corporation", "VT320", MACHINE_NOT_WORKING | MACHINE_NO_SOUND)
+//COMP( 1989?, vt330, 0, 0, vt320, vt320, driver_device, 0, "Digital Equipment Corporation", "VT330", MACHINE_NOT_WORKING)
+//COMP( 1989?, vt340, 0, 0, vt320, vt320, driver_device, 0, "Digital Equipment Corporation", "VT340", MACHINE_NOT_WORKING)
+//COMP( 1990?, vt340p, 0, 0, vt320, vt320, driver_device, 0, "Digital Equipment Corporation", "VT340+", MACHINE_NOT_WORKING)