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-rw-r--r--src/mame/skeleton/digitech_gsp5.cpp68
1 files changed, 68 insertions, 0 deletions
diff --git a/src/mame/skeleton/digitech_gsp5.cpp b/src/mame/skeleton/digitech_gsp5.cpp
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+++ b/src/mame/skeleton/digitech_gsp5.cpp
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+// license:BSD-3-Clause
+// copyright-holders:AJR
+/****************************************************************************
+
+ Skeleton driver for DigiTech GSP 5 guitar effects processor.
+
+****************************************************************************/
+
+#include "emu.h"
+//#include "bus/midi/midi.h"
+#include "cpu/m6800/m6801.h"
+#include "machine/nvram.h"
+
+namespace {
+
+class gsp5_state : public driver_device
+{
+public:
+ gsp5_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag)
+ , m_maincpu(*this, "maincpu")
+ {
+ }
+
+ void gsp5(machine_config &config);
+
+private:
+ void ls_w(offs_t offset, u8 data);
+
+ void mem_map(address_map &map);
+
+ required_device<cpu_device> m_maincpu;
+};
+
+void gsp5_state::ls_w(offs_t offset, u8 data)
+{
+ logerror("%s: Writing $%02X to LS%c latch\n", machine().describe_context(), data, 'A' + offset);
+}
+
+void gsp5_state::mem_map(address_map &map)
+{
+ map(0x2000, 0x2006).mirror(0x1ff8).w(FUNC(gsp5_state::ls_w));
+ map(0x4000, 0x5fff).ram().share("nvram");
+ map(0x8000, 0xffff).rom().region("eprom", 0);
+}
+
+static INPUT_PORTS_START(gsp5)
+INPUT_PORTS_END
+
+void gsp5_state::gsp5(machine_config &config)
+{
+ HD6303R(config, m_maincpu, 4_MHz_XTAL); // HD6303RP
+ m_maincpu->set_addrmap(AS_PROGRAM, &gsp5_state::mem_map);
+
+ NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); // KM6264A-10 + 3V battery
+
+ //DSP256(config, "dsp", 32_MHz_XTAL);
+}
+
+ROM_START(gsp5)
+ ROM_REGION(0x8000, "eprom", 0)
+ ROM_LOAD("gsp-5_v1.02_1190.u53", 0x0000, 0x8000, CRC(02868045) SHA1(2e0682e3020ef8a5e1aa0fa28ac84450e08cbf1b)) // 27C256
+ // Socket for second EPROM (27C128) exists at U63 but is unpopulated
+ROM_END
+
+} // anonymous namespace
+
+SYST(1989, gsp5, 0, 0, gsp5, gsp5, gsp5_state, empty_init, "DigiTech", "GSP 5 Guitar Effects Processor/Preamp", MACHINE_IS_SKELETON)