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-rw-r--r--src/mame/drivers/lb4.cpp102
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diff --git a/src/mame/drivers/lb4.cpp b/src/mame/drivers/lb4.cpp
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+// license:BSD-3-Clause
+// copyright-holders:Ryan Holtz
+/****************************************************************************
+
+ Liberty Electronics LB-4 serial terminal
+
+ Known hardware:
+ - Motorola 6800 CPU
+ - Hitachi HD46505 (Motorola 6845-compatible) CRTC
+ - Hitachi HD46850 (Motorola 6850-compatible) ACIA
+ - Zilog Z8430 CTC
+ - 16.6698MHz Crystal
+
+****************************************************************************/
+
+#include "emu.h"
+#include "cpu/m6800/m6800.h"
+#include "machine/6850acia.h"
+#include "machine/z80ctc.h"
+#include "video/mc6845.h"
+#include "screen.h"
+#include "emupal.h"
+
+#define MASTER_CLOCK 16.6698_MHz_XTAL
+
+class lb4_state : public driver_device
+{
+public:
+ lb4_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag)
+ , m_maincpu(*this, "maincpu")
+ , m_acia(*this, "acia")
+ , m_ctc(*this, "ctc")
+ , m_crtc(*this, "crtc")
+ , m_gfxdecode(*this, "gfxdecode")
+ , m_palette(*this, "palette")
+ { }
+
+ void lb4(machine_config &config);
+
+private:
+ void mem_map(address_map &map);
+
+ required_device<m6800_cpu_device> m_maincpu;
+ required_device<acia6850_device> m_acia;
+ required_device<z80ctc_device> m_ctc;
+ required_device<h46505_device> m_crtc;
+ required_device<gfxdecode_device> m_gfxdecode;
+ required_device<palette_device> m_palette;
+};
+
+
+void lb4_state::mem_map(address_map &map)
+{
+ map(0xe000, 0xffff).rom().region("maincpu", 0);
+}
+
+static const gfx_layout char_layout =
+{
+ 8,16,
+ RGN_FRAC(1,1),
+ 1,
+ { 0 },
+ { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
+ { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
+ 8*16
+};
+
+static GFXDECODE_START(chars)
+ GFXDECODE_ENTRY("chars", 0, char_layout, 0, 1)
+GFXDECODE_END
+
+void lb4_state::lb4(machine_config &config)
+{
+ // All dividers unknown/guessed
+ M6800(config, m_maincpu, MASTER_CLOCK / 16);
+ m_maincpu->set_addrmap(AS_PROGRAM, &lb4_state::mem_map);
+
+ ACIA6850(config, m_acia, MASTER_CLOCK / 128);
+
+ Z80CTC(config, m_ctc, MASTER_CLOCK / 4);
+
+ H46505(config, m_crtc, MASTER_CLOCK);
+
+ GFXDECODE(config, m_gfxdecode, m_palette, chars);
+
+ PALETTE(config, m_palette, 2).set_init("palette", FUNC(palette_device::palette_init_monochrome));
+}
+
+static INPUT_PORTS_START( lb4 )
+INPUT_PORTS_END
+
+ROM_START( lb4 )
+ ROM_REGION( 0x10000, "maincpu", 0 )
+ ROM_LOAD( "u8.bin", 0xe000, 0x2000, CRC(2e375abc) SHA1(12ad1e49c5773c36c3a8d65845c9a50f9dec141f) )
+
+ ROM_REGION( 0x1000, "chars", 0 )
+ ROM_LOAD( "u32.bin", 0x0000, 0x1000, CRC(f6d86e87) SHA1(c0885e4a35095a730d760bf91a1cf4e8edd6a2bb) )
+ROM_END
+
+// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
+COMP( 197?, lb4, 0, 0, lb4, lb4, lb4_state, empty_init, "Liberty Electronics", "LB-4", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW )