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Diffstat (limited to 'src/emu/cpu/mn10200/mn10200.c')
-rw-r--r--src/emu/cpu/mn10200/mn10200.c143
1 files changed, 95 insertions, 48 deletions
diff --git a/src/emu/cpu/mn10200/mn10200.c b/src/emu/cpu/mn10200/mn10200.c
index 4a784b78844..0fdb1edd946 100644
--- a/src/emu/cpu/mn10200/mn10200.c
+++ b/src/emu/cpu/mn10200/mn10200.c
@@ -35,28 +35,88 @@ enum mn10200_flag
FLAG_D15 = 0x8000 // ?
};
-const device_type MN1020012A = &device_creator<mn10200_device>;
-static ADDRESS_MAP_START( mn1020012_internal_map, AS_PROGRAM, 16, mn10200_device )
+const device_type MN1020012A = &device_creator<mn1020012a_device>;
+
+// internal memory maps
+static ADDRESS_MAP_START( mn1020012a_internal_map, AS_PROGRAM, 16, mn10200_device )
AM_RANGE(0x00fc00, 0x00ffff) AM_READWRITE8(io_control_r, io_control_w, 0xffff)
ADDRESS_MAP_END
-mn10200_device::mn10200_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
- : cpu_device(mconfig, MN1020012A, "MN1020012A", tag, owner, clock, "mn1020012a", __FILE__),
- m_program_config("program", ENDIANNESS_LITTLE, 16, 24, 0, ADDRESS_MAP_NAME(mn1020012_internal_map)),
- m_io_config("data", ENDIANNESS_LITTLE, 8, 8, 0)
+
+// device definitions
+mn1020012a_device::mn1020012a_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : mn10200_device(mconfig, MN1020012A, "MN1020012A", tag, owner, clock, ADDRESS_MAP_NAME(mn1020012a_internal_map), "mn1020012a", __FILE__)
+{ }
+
+
+// disasm
+void mn10200_device::state_string_export(const device_state_entry &entry, std::string &str)
{
+ switch (entry.index())
+ {
+ case STATE_GENFLAGS:
+ strprintf(str, "S=%d irq=%s im=%d %c%c%c%c %c%c%c%c",
+ (m_psw >> 12) & 3,
+ m_psw & FLAG_IE ? "on " : "off",
+ (m_psw >> 8) & 7,
+ m_psw & FLAG_VX ? 'V' : '-',
+ m_psw & FLAG_CX ? 'C' : '-',
+ m_psw & FLAG_NX ? 'N' : '-',
+ m_psw & FLAG_ZX ? 'Z' : '-',
+ m_psw & FLAG_VF ? 'v' : '-',
+ m_psw & FLAG_CF ? 'c' : '-',
+ m_psw & FLAG_NF ? 'n' : '-',
+ m_psw & FLAG_ZF ? 'z' : '-');
+ break;
+ }
+}
+
+offs_t mn10200_device::disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options)
+{
+ extern CPU_DISASSEMBLE( mn10200 );
+ return CPU_DISASSEMBLE_NAME(mn10200)(this, buffer, pc, oprom, opram, options);
}
+
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
+enum
+{
+ MN10200_PC = 0,
+ MN10200_PSW,
+ MN10200_MDR,
+ MN10200_D0,
+ MN10200_D1,
+ MN10200_D2,
+ MN10200_D3,
+ MN10200_A0,
+ MN10200_A1,
+ MN10200_A2,
+ MN10200_A3,
+ MN10200_NMICR,
+ MN10200_IAGR
+};
+
void mn10200_device::device_start()
{
m_program = &space(AS_PROGRAM);
- m_io = &space(AS_IO);
+
+ // resolve callbacks
+ m_read_port0.resolve_safe(0xff);
+ m_read_port1.resolve_safe(0xff);
+ m_read_port2.resolve_safe(0xff);
+ m_read_port3.resolve_safe(0xff);
+ m_read_port4.resolve_safe(0xff);
+
+ m_write_port0.resolve_safe();
+ m_write_port1.resolve_safe();
+ m_write_port2.resolve_safe();
+ m_write_port3.resolve_safe();
+ m_write_port4.resolve_safe();
// init and register for savestates
save_item(NAME(m_pc));
@@ -176,34 +236,6 @@ void mn10200_device::device_start()
}
-void mn10200_device::state_string_export(const device_state_entry &entry, std::string &str)
-{
- switch (entry.index())
- {
- case STATE_GENFLAGS:
- strprintf(str, "S=%d irq=%s im=%d %c%c%c%c %c%c%c%c",
- (m_psw >> 12) & 3,
- m_psw & FLAG_IE ? "on " : "off",
- (m_psw >> 8) & 7,
- m_psw & FLAG_VX ? 'V' : '-',
- m_psw & FLAG_CX ? 'C' : '-',
- m_psw & FLAG_NX ? 'N' : '-',
- m_psw & FLAG_ZX ? 'Z' : '-',
- m_psw & FLAG_VF ? 'v' : '-',
- m_psw & FLAG_CF ? 'c' : '-',
- m_psw & FLAG_NF ? 'n' : '-',
- m_psw & FLAG_ZF ? 'z' : '-');
- break;
- }
-}
-
-
-offs_t mn10200_device::disasm_disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram, UINT32 options)
-{
- extern CPU_DISASSEMBLE( mn10200 );
- return CPU_DISASSEMBLE_NAME(mn10200)(this, buffer, pc, oprom, opram, options);
-}
-
//-------------------------------------------------
// device_reset - device-specific reset
@@ -234,7 +266,10 @@ void mn10200_device::device_reset()
}
-// interrupts
+
+//-------------------------------------------------
+// interrupts
+//-------------------------------------------------
void mn10200_device::take_irq(int level, int group)
{
@@ -332,7 +367,10 @@ void mn10200_device::execute_set_input(int irqnum, int state)
}
-// 8-bit timers
+
+//-------------------------------------------------
+// timers
+//-------------------------------------------------
int mn10200_device::timer_tick_simple(int tmr)
{
@@ -405,7 +443,10 @@ TIMER_CALLBACK_MEMBER( mn10200_device::simple_timer_cb )
}
-// opcode handlers
+
+//-------------------------------------------------
+// opcode helpers
+//-------------------------------------------------
void mn10200_device::illegal(UINT8 prefix, UINT8 op)
{
@@ -490,6 +531,10 @@ void mn10200_device::do_branch(int condition)
+//-------------------------------------------------
+// execute loop
+//-------------------------------------------------
+
void mn10200_device::execute_run()
{
while (m_cycles > 0)
@@ -1645,7 +1690,10 @@ void mn10200_device::execute_run()
}
-// internal i/o
+
+//-------------------------------------------------
+// internal i/o
+//-------------------------------------------------
WRITE8_MEMBER(mn10200_device::io_control_w)
{
@@ -2008,19 +2056,19 @@ WRITE8_MEMBER(mn10200_device::io_control_w)
// outputs
case 0x3c0:
m_port[0].out = data;
- m_io->write_byte(MN10200_PORT0, m_port[0].out | (m_port[0].dir ^ 0xff));
+ m_write_port0(MN10200_PORT0, m_port[0].out | (m_port[0].dir ^ 0xff), 0xff);
break;
case 0x264:
m_port[1].out = data;
- m_io->write_byte(MN10200_PORT1, m_port[1].out | (m_port[1].dir ^ 0xff));
+ m_write_port1(MN10200_PORT1, m_port[1].out | (m_port[1].dir ^ 0xff), 0xff);
break;
case 0x3c2:
m_port[2].out = data & 0x0f;
- m_io->write_byte(MN10200_PORT2, m_port[2].out | (m_port[2].dir ^ 0x0f));
+ m_write_port2(MN10200_PORT2, m_port[2].out | (m_port[2].dir ^ 0x0f), 0xff);
break;
case 0x3c3:
m_port[3].out = data & 0x1f;
- m_io->write_byte(MN10200_PORT3, m_port[3].out | (m_port[3].dir ^ 0x1f));
+ m_write_port3(MN10200_PORT3, m_port[3].out | (m_port[3].dir ^ 0x1f), 0xff);
break;
// directions (0=input, 1=output)
@@ -2050,7 +2098,6 @@ WRITE8_MEMBER(mn10200_device::io_control_w)
}
-
READ8_MEMBER(mn10200_device::io_control_r)
{
switch (offset)
@@ -2152,13 +2199,13 @@ READ8_MEMBER(mn10200_device::io_control_r)
// inputs
case 0x3d0:
- return m_io->read_byte(MN10200_PORT0) | m_port[0].dir;
+ return m_read_port0(MN10200_PORT0, 0xff) | m_port[0].dir;
case 0x3d1:
- return m_io->read_byte(MN10200_PORT1) | m_port[1].dir;
+ return m_read_port1(MN10200_PORT1, 0xff) | m_port[1].dir;
case 0x3d2:
- return (m_io->read_byte(MN10200_PORT2) & 0x0f) | m_port[2].dir;
+ return (m_read_port2(MN10200_PORT2, 0xff) & 0x0f) | m_port[2].dir;
case 0x3d3:
- return (m_io->read_byte(MN10200_PORT3) & 0x1f) | m_port[3].dir;
+ return (m_read_port3(MN10200_PORT3, 0xff) & 0x1f) | m_port[3].dir;
// directions (0=input, 1=output)
case 0x3e0: