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Diffstat (limited to 'src/mame/drivers/vt320.cpp')
-rw-r--r-- | src/mame/drivers/vt320.cpp | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/src/mame/drivers/vt320.cpp b/src/mame/drivers/vt320.cpp new file mode 100644 index 00000000000..ee452a5852d --- /dev/null +++ b/src/mame/drivers/vt320.cpp @@ -0,0 +1,125 @@ +// 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) |