summaryrefslogtreecommitdiffstatshomepage
diff options
context:
space:
mode:
author hap <happppp@users.noreply.github.com>2015-02-07 00:50:04 +0100
committer hap <happppp@users.noreply.github.com>2015-02-07 00:50:04 +0100
commit2cd878633afbe3f724e8aee9b82ad0a126d2758c (patch)
treeb1de2fa870f419bf518939df6364b3602f00b202
parentaa73e9ccefb113a1af17f5789e5dae5b209acd92 (diff)
added NEC uCOM-4 MCU core skeleton
-rw-r--r--src/emu/cpu/amis2000/amis2000.c1
-rw-r--r--src/emu/cpu/cpu.mak19
-rw-r--r--src/emu/cpu/ucom4/ucom4.c181
-rw-r--r--src/emu/cpu/ucom4/ucom4.h175
-rw-r--r--src/emu/cpu/ucom4/ucom4d.c24
-rw-r--r--src/emu/cpu/ucom4/ucom4op.inc1
-rw-r--r--src/mame/mame.mak1
-rw-r--r--src/mess/mess.mak1
-rw-r--r--src/tools/unidasm.c2
9 files changed, 405 insertions, 0 deletions
diff --git a/src/emu/cpu/amis2000/amis2000.c b/src/emu/cpu/amis2000/amis2000.c
index 1928f682219..bc961077595 100644
--- a/src/emu/cpu/amis2000/amis2000.c
+++ b/src/emu/cpu/amis2000/amis2000.c
@@ -3,6 +3,7 @@
/*
American Microsystems, Inc.(AMI) S2000-family 4-bit MCU cores, introduced late 1970s
+ Overall functionality is similar to (and probably derived from) NEC uCOM-4.
TODO:
- unemulated opcodes (need more testing material)
diff --git a/src/emu/cpu/cpu.mak b/src/emu/cpu/cpu.mak
index 84488573fed..2a5385e9d88 100644
--- a/src/emu/cpu/cpu.mak
+++ b/src/emu/cpu/cpu.mak
@@ -1867,6 +1867,25 @@ $(CPUOBJ)/upd7810/upd7810.o: $(CPUSRC)/upd7810/upd7810.c \
#-------------------------------------------------
+# NEC uCOM-4 series
+#@src/emu/cpu/ucom4/ucom4.h,CPUS += UCOM4
+#-------------------------------------------------
+
+ifneq ($(filter UCOM4,$(CPUS)),)
+OBJDIRS += $(CPUOBJ)/ucom4
+CPUOBJS += $(CPUOBJ)/ucom4/ucom4.o
+DASMOBJS += $(CPUOBJ)/ucom4/ucom4d.o
+endif
+
+$(CPUOBJ)/ucom4/ucom4.o: $(CPUSRC)/ucom4/ucom4.h \
+ $(CPUSRC)/ucom4/ucom4.c \
+ $(CPUSRC)/ucom4/ucom4op.inc
+
+$(CPUOBJ)/ucom4/ucom4d.o: $(CPUSRC)/ucom4/ucom4.h \
+ $(CPUSRC)/ucom4/ucom4d.c
+
+
+#-------------------------------------------------
# Nintendo Minx
#@src/emu/cpu/minx/minx.h,CPUS += MINX
#-------------------------------------------------
diff --git a/src/emu/cpu/ucom4/ucom4.c b/src/emu/cpu/ucom4/ucom4.c
new file mode 100644
index 00000000000..3796394b5ec
--- /dev/null
+++ b/src/emu/cpu/ucom4/ucom4.c
@@ -0,0 +1,181 @@
+// license:BSD-3-Clause
+// copyright-holders:hap
+/*
+
+ NEC uCOM-4 MCU family cores
+
+*/
+
+#include "ucom4.h"
+#include "debugger.h"
+
+#include "ucom4op.inc"
+
+
+// uCOM-43 products
+const device_type NEC_D553 = &device_creator<upd553_cpu_device>; // 42-pin PMOS, 35 pins for I/O, Open Drain output, 2000x8 ROM, 96x4 RAM
+const device_type NEC_D650 = &device_creator<upd650_cpu_device>; // 42-pin CMOS, 35 pins for I/O, push-pull output, 2000x8 ROM, 96x4 RAM
+
+// uCOM-44 products
+const device_type NEC_D552 = &device_creator<upd552_cpu_device>; // 42-pin PMOS, 35 pins for I/O, Open Drain output, 1000x8 ROM, 64x4 RAM
+
+// internal memory maps
+static ADDRESS_MAP_START(program_1k, AS_PROGRAM, 8, ucom4_cpu_device)
+ AM_RANGE(0x0000, 0x03ff) AM_ROM
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START(program_2k, AS_PROGRAM, 8, ucom4_cpu_device)
+ AM_RANGE(0x0000, 0x07ff) AM_ROM
+ADDRESS_MAP_END
+
+
+static ADDRESS_MAP_START(data_64x4, AS_DATA, 8, ucom4_cpu_device)
+ AM_RANGE(0x00, 0x3f) AM_RAM
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START(data_96x4, AS_DATA, 8, ucom4_cpu_device)
+ AM_RANGE(0x00, 0x3f) AM_RAM
+ AM_RANGE(0x40, 0x5f) AM_RAM AM_MIRROR(0x20)
+ADDRESS_MAP_END
+
+
+// device definitions
+upd553_cpu_device::upd553_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : ucom4_cpu_device(mconfig, NEC_D553, "uPD553", tag, owner, clock, 3, 11, ADDRESS_MAP_NAME(program_2k), 7, ADDRESS_MAP_NAME(data_96x4), "upd553", __FILE__)
+{ }
+
+upd650_cpu_device::upd650_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : ucom4_cpu_device(mconfig, NEC_D650, "uPD650", tag, owner, clock, 3, 11, ADDRESS_MAP_NAME(program_2k), 7, ADDRESS_MAP_NAME(data_96x4), "upd650", __FILE__)
+{ }
+
+upd552_cpu_device::upd552_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : ucom4_cpu_device(mconfig, NEC_D552, "uPD552", tag, owner, clock, 1, 10, ADDRESS_MAP_NAME(program_1k), 6, ADDRESS_MAP_NAME(data_64x4), "upd552", __FILE__)
+{ }
+
+
+// disasm
+void ucom4_cpu_device::state_string_export(const device_state_entry &entry, astring &string)
+{
+ switch (entry.index())
+ {
+ case STATE_GENFLAGS:
+ string.printf("%c%c%c%c",
+ m_inte_f ? 'E':'e',
+ m_int_f ? 'I':'i',
+ m_timer_f ? 'T':'t',
+ m_carry_f ? 'C':'c'
+ );
+ break;
+
+ default: break;
+ }
+}
+
+offs_t ucom4_cpu_device::disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options)
+{
+ extern CPU_DISASSEMBLE(ucom4);
+ return CPU_DISASSEMBLE_NAME(ucom4)(this, buffer, pc, oprom, opram, options);
+}
+
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+enum
+{
+ UCOM4_PC=1, UCOM4_DPL, UCOM4_DPH,
+ UCOM4_ACC
+};
+
+void ucom4_cpu_device::device_start()
+{
+ m_program = &space(AS_PROGRAM);
+ m_data = &space(AS_DATA);
+ m_prgmask = (1 << m_prgwidth) - 1;
+ m_datamask = (1 << m_datawidth) - 1;
+
+ m_read_a.resolve_safe(0);
+ m_read_b.resolve_safe(0);
+ m_read_c.resolve_safe(0);
+ m_read_d.resolve_safe(0);
+
+ m_write_c.resolve_safe();
+ m_write_d.resolve_safe();
+ m_write_e.resolve_safe();
+ m_write_f.resolve_safe();
+ m_write_g.resolve_safe();
+ m_write_h.resolve_safe();
+ m_write_i.resolve_safe();
+
+ // zerofill
+ memset(m_stack, 0, sizeof(m_stack));
+ m_op = 0;
+ m_prev_op = 0;
+ m_pc = 0;
+ m_acc = 0;
+ m_dpl = 0;
+ m_dph = 0;
+ m_carry_f = 0;
+ m_timer_f = 0;
+ m_int_f = 0;
+ m_inte_f = 0;
+
+ // register for savestates
+ save_item(NAME(m_stack));
+ save_item(NAME(m_op));
+ save_item(NAME(m_prev_op));
+ save_item(NAME(m_pc));
+ save_item(NAME(m_acc));
+ save_item(NAME(m_dpl));
+ save_item(NAME(m_dph));
+ save_item(NAME(m_carry_f));
+ save_item(NAME(m_timer_f));
+ save_item(NAME(m_int_f));
+ save_item(NAME(m_inte_f));
+
+ // register state for debugger
+ state_add(UCOM4_PC, "PC", m_pc).formatstr("%04X");
+ state_add(UCOM4_DPL, "DPL", m_dpl).formatstr("%01X");
+ state_add(UCOM4_DPH, "DPH", m_dph).formatstr("%01X");
+ state_add(UCOM4_ACC, "ACC", m_acc).formatstr("%01X");
+
+ state_add(STATE_GENPC, "curpc", m_pc).formatstr("%04X").noshow();
+// state_add(STATE_GENFLAGS, "GENFLAGS", m_flags).formatstr("%4s").noshow();
+
+ m_icountptr = &m_icount;
+}
+
+
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void ucom4_cpu_device::device_reset()
+{
+ m_pc = 0;
+ m_op = 0;
+}
+
+
+
+//-------------------------------------------------
+// execute
+//-------------------------------------------------
+
+void ucom4_cpu_device::execute_run()
+{
+ while (m_icount > 0)
+ {
+ m_icount--;
+
+ // remember previous opcode
+ m_prev_op = m_op;
+
+ debugger_instruction_hook(this, m_pc);
+ m_op = m_program->read_byte(m_pc);
+ m_pc = (m_pc + 1) & m_prgmask;
+ }
+}
diff --git a/src/emu/cpu/ucom4/ucom4.h b/src/emu/cpu/ucom4/ucom4.h
new file mode 100644
index 00000000000..033d4dd6956
--- /dev/null
+++ b/src/emu/cpu/ucom4/ucom4.h
@@ -0,0 +1,175 @@
+// license:BSD-3-Clause
+// copyright-holders:hap
+/*
+
+ NEC uCOM-4 MCU family cores
+
+*/
+
+#ifndef _UCOM4_H_
+#define _UCOM4_H_
+
+#include "emu.h"
+
+
+// I/O ports setup
+#define MCFG_UCOM4_READ_A_CB(_devcb) \
+ ucom4_cpu_device::set_read_a_callback(*device, DEVCB_##_devcb);
+
+#define MCFG_UCOM4_READ_B_CB(_devcb) \
+ ucom4_cpu_device::set_read_b_callback(*device, DEVCB_##_devcb);
+
+#define MCFG_UCOM4_READ_C_CB(_devcb) \
+ ucom4_cpu_device::set_read_c_callback(*device, DEVCB_##_devcb);
+#define MCFG_UCOM4_WRITE_C_CB(_devcb) \
+ ucom4_cpu_device::set_write_c_callback(*device, DEVCB_##_devcb);
+
+#define MCFG_UCOM4_READ_D_CB(_devcb) \
+ ucom4_cpu_device::set_read_d_callback(*device, DEVCB_##_devcb);
+#define MCFG_UCOM4_WRITE_D_CB(_devcb) \
+ ucom4_cpu_device::set_write_d_callback(*device, DEVCB_##_devcb);
+
+#define MCFG_UCOM4_WRITE_E_CB(_devcb) \
+ ucom4_cpu_device::set_write_e_callback(*device, DEVCB_##_devcb);
+
+#define MCFG_UCOM4_WRITE_F_CB(_devcb) \
+ ucom4_cpu_device::set_write_f_callback(*device, DEVCB_##_devcb);
+
+#define MCFG_UCOM4_WRITE_G_CB(_devcb) \
+ ucom4_cpu_device::set_write_g_callback(*device, DEVCB_##_devcb);
+
+#define MCFG_UCOM4_WRITE_H_CB(_devcb) \
+ ucom4_cpu_device::set_write_h_callback(*device, DEVCB_##_devcb);
+
+#define MCFG_UCOM4_WRITE_I_CB(_devcb) \
+ ucom4_cpu_device::set_write_i_callback(*device, DEVCB_##_devcb);
+
+
+
+class ucom4_cpu_device : public cpu_device
+{
+public:
+ // construction/destruction
+ ucom4_cpu_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, int stack_levels, int prgwidth, address_map_constructor program, int datawidth, address_map_constructor data, const char *shortname, const char *source)
+ : cpu_device(mconfig, type, name, tag, owner, clock, shortname, source)
+ , m_program_config("program", ENDIANNESS_BIG, 8, prgwidth, 0, program)
+ , m_data_config("data", ENDIANNESS_BIG, 8, datawidth, 0, data)
+ , m_prgwidth(prgwidth)
+ , m_datawidth(datawidth)
+ , m_stack_levels(stack_levels)
+ , m_read_a(*this)
+ , m_read_b(*this)
+ , m_read_c(*this)
+ , m_read_d(*this)
+ , m_write_c(*this)
+ , m_write_d(*this)
+ , m_write_e(*this)
+ , m_write_f(*this)
+ , m_write_g(*this)
+ , m_write_h(*this)
+ , m_write_i(*this)
+ { }
+
+ // static configuration helpers
+ template<class _Object> static devcb_base &set_read_a_callback(device_t &device, _Object object) { return downcast<ucom4_cpu_device &>(device).m_read_a.set_callback(object); }
+ template<class _Object> static devcb_base &set_read_b_callback(device_t &device, _Object object) { return downcast<ucom4_cpu_device &>(device).m_read_b.set_callback(object); }
+ template<class _Object> static devcb_base &set_read_c_callback(device_t &device, _Object object) { return downcast<ucom4_cpu_device &>(device).m_read_c.set_callback(object); }
+ template<class _Object> static devcb_base &set_read_d_callback(device_t &device, _Object object) { return downcast<ucom4_cpu_device &>(device).m_read_d.set_callback(object); }
+
+ template<class _Object> static devcb_base &set_write_c_callback(device_t &device, _Object object) { return downcast<ucom4_cpu_device &>(device).m_write_c.set_callback(object); }
+ template<class _Object> static devcb_base &set_write_d_callback(device_t &device, _Object object) { return downcast<ucom4_cpu_device &>(device).m_write_d.set_callback(object); }
+ template<class _Object> static devcb_base &set_write_e_callback(device_t &device, _Object object) { return downcast<ucom4_cpu_device &>(device).m_write_e.set_callback(object); }
+ template<class _Object> static devcb_base &set_write_f_callback(device_t &device, _Object object) { return downcast<ucom4_cpu_device &>(device).m_write_f.set_callback(object); }
+ template<class _Object> static devcb_base &set_write_g_callback(device_t &device, _Object object) { return downcast<ucom4_cpu_device &>(device).m_write_g.set_callback(object); }
+ template<class _Object> static devcb_base &set_write_h_callback(device_t &device, _Object object) { return downcast<ucom4_cpu_device &>(device).m_write_h.set_callback(object); }
+ template<class _Object> static devcb_base &set_write_i_callback(device_t &device, _Object object) { return downcast<ucom4_cpu_device &>(device).m_write_i.set_callback(object); }
+
+protected:
+ // device-level overrides
+ virtual void device_start();
+ virtual void device_reset();
+
+ // device_execute_interface overrides
+ virtual UINT32 execute_min_cycles() const { return 1; }
+ virtual UINT32 execute_max_cycles() const { return 2; }
+ virtual UINT32 execute_input_lines() const { return 1; }
+ virtual void execute_run();
+
+ // device_memory_interface overrides
+ virtual const address_space_config *memory_space_config(address_spacenum spacenum = AS_0) const { return(spacenum == AS_PROGRAM) ? &m_program_config :((spacenum == AS_DATA) ? &m_data_config : NULL); }
+
+ // device_disasm_interface overrides
+ virtual UINT32 disasm_min_opcode_bytes() const { return 1; }
+ virtual UINT32 disasm_max_opcode_bytes() const { return 2; }
+ virtual offs_t disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options);
+ void state_string_export(const device_state_entry &entry, astring &string);
+
+ address_space_config m_program_config;
+ address_space_config m_data_config;
+ address_space *m_program;
+ address_space *m_data;
+
+ int m_prgwidth;
+ int m_datawidth;
+ int m_prgmask;
+ int m_datamask;
+ int m_stack_levels; // number of callstack levels
+ UINT16 m_stack[3]; // max 3
+
+ UINT8 m_op;
+ UINT8 m_prev_op;
+ int m_icount;
+
+ UINT16 m_pc; // program counter
+ UINT8 m_acc; // 4-bit accumulator
+ UINT8 m_dpl; // 4-bit data pointer low (RAM x)
+ UINT8 m_dph; // 1/2/3-bit data pointer high (RAM y)
+ UINT8 m_carry_f; // carry flag
+ UINT8 m_timer_f; // timer out flag
+ UINT8 m_int_f; // interrupt flag
+ UINT8 m_inte_f; // interrupt enable flag
+
+ // i/o handlers
+ devcb_read8 m_read_a;
+ devcb_read8 m_read_b;
+ devcb_read8 m_read_c;
+ devcb_read8 m_read_d;
+
+ devcb_write8 m_write_c;
+ devcb_write8 m_write_d;
+ devcb_write8 m_write_e;
+ devcb_write8 m_write_f;
+ devcb_write8 m_write_g;
+ devcb_write8 m_write_h;
+ devcb_write8 m_write_i;
+};
+
+
+class upd553_cpu_device : public ucom4_cpu_device
+{
+public:
+ upd553_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+};
+
+
+class upd650_cpu_device : public ucom4_cpu_device
+{
+public:
+ upd650_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+};
+
+
+class upd552_cpu_device : public ucom4_cpu_device
+{
+public:
+ upd552_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+};
+
+
+
+extern const device_type NEC_D553;
+extern const device_type NEC_D650;
+extern const device_type NEC_D552;
+
+
+#endif /* _UCOM4_H_ */
diff --git a/src/emu/cpu/ucom4/ucom4d.c b/src/emu/cpu/ucom4/ucom4d.c
new file mode 100644
index 00000000000..0663cfe4690
--- /dev/null
+++ b/src/emu/cpu/ucom4/ucom4d.c
@@ -0,0 +1,24 @@
+// license:BSD-3-Clause
+// copyright-holders:hap
+/*
+
+ NEC uCOM-4 MCU family disassembler
+
+*/
+
+#include "emu.h"
+#include "debugger.h"
+#include "ucom4.h"
+
+
+CPU_DISASSEMBLE(ucom4)
+{
+ int pos = 0;
+// UINT8 op = oprom[pos++];
+// UINT8 instr = ucom4_mnemonic[op];
+
+ char *dst = buffer;
+ dst += sprintf(dst, "ABC");
+
+ return pos | 0 | DASMFLAG_SUPPORTED;
+}
diff --git a/src/emu/cpu/ucom4/ucom4op.inc b/src/emu/cpu/ucom4/ucom4op.inc
new file mode 100644
index 00000000000..ebb932edb2d
--- /dev/null
+++ b/src/emu/cpu/ucom4/ucom4op.inc
@@ -0,0 +1 @@
+// uCOM4 opcode handlers
diff --git a/src/mame/mame.mak b/src/mame/mame.mak
index 318a0bbaccf..928e56398fd 100644
--- a/src/mame/mame.mak
+++ b/src/mame/mame.mak
@@ -151,6 +151,7 @@ CPUS += ALTO2
CPUS += ARC
CPUS += ARCOMPACT
CPUS += AMIS2000
+CPUS += UCOM4
#-------------------------------------------------
# specify available sound cores
diff --git a/src/mess/mess.mak b/src/mess/mess.mak
index fdc4ca29768..219ecccc47e 100644
--- a/src/mess/mess.mak
+++ b/src/mess/mess.mak
@@ -135,6 +135,7 @@ CPUS += ALTO2
CPUS += ARC
CPUS += ARCOMPACT
CPUS += AMIS2000
+CPUS += UCOM4
#-------------------------------------------------
# specify available sound cores; some of these are
diff --git a/src/tools/unidasm.c b/src/tools/unidasm.c
index cef5129acab..a991686f90b 100644
--- a/src/tools/unidasm.c
+++ b/src/tools/unidasm.c
@@ -179,6 +179,7 @@ CPU_DISASSEMBLE( tms9980 );
CPU_DISASSEMBLE( tms9995 );
CPU_DISASSEMBLE( tx0_64kw );
CPU_DISASSEMBLE( tx0_8kw );
+CPU_DISASSEMBLE( ucom4 );
CPU_DISASSEMBLE( unsp );
CPU_DISASSEMBLE( upd7725 );
CPU_DISASSEMBLE( upd7801 );
@@ -326,6 +327,7 @@ static const dasm_table_entry dasm_table[] =
{ "tms9995", _8bit, 0, CPU_DISASSEMBLE_NAME(tms9995) },
{ "tx0_64kw", _32be, -2, CPU_DISASSEMBLE_NAME(tx0_64kw) },
{ "tx0_8kw", _32be, -2, CPU_DISASSEMBLE_NAME(tx0_8kw) },
+ { "ucom4", _8bit, 0, CPU_DISASSEMBLE_NAME(ucom4) },
{ "unsp", _16be, 0, CPU_DISASSEMBLE_NAME(unsp) },
{ "upd7725", _32be, 0, CPU_DISASSEMBLE_NAME(unsp) },
{ "upd7801", _8bit, 0, CPU_DISASSEMBLE_NAME(upd7801) },