diff options
Diffstat (limited to 'src/emu/cpu/mn10200/mn10200.c')
-rw-r--r-- | src/emu/cpu/mn10200/mn10200.c | 203 |
1 files changed, 125 insertions, 78 deletions
diff --git a/src/emu/cpu/mn10200/mn10200.c b/src/emu/cpu/mn10200/mn10200.c index e05c032c91c..bf00be5b984 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) { @@ -479,9 +520,9 @@ void mn10200_device::do_jsr(UINT32 to, UINT32 ret) change_pc(to); } -void mn10200_device::do_branch(bool state) +void mn10200_device::do_branch(int condition) { - if (state) + if (condition) { m_cycles -= 1; change_pc(m_pc + (INT8)read_arg8(m_pc)); @@ -490,6 +531,10 @@ void mn10200_device::do_branch(bool state) +//------------------------------------------------- +// execute loop +//------------------------------------------------- + void mn10200_device::execute_run() { while (m_cycles > 0) @@ -579,13 +624,13 @@ void mn10200_device::execute_run() // add dn, dm case 0x90: case 0x91: case 0x92: case 0x93: case 0x94: case 0x95: case 0x96: case 0x97: case 0x98: case 0x99: case 0x9a: case 0x9b: case 0x9c: case 0x9d: case 0x9e: case 0x9f: - m_d[op&3] = do_add(m_d[op&3], m_d[op>>2&3], 0); + m_d[op&3] = do_add(m_d[op&3], m_d[op>>2&3]); break; // sub dn, dm case 0xa0: case 0xa1: case 0xa2: case 0xa3: case 0xa4: case 0xa5: case 0xa6: case 0xa7: case 0xa8: case 0xa9: case 0xaa: case 0xab: case 0xac: case 0xad: case 0xae: case 0xaf: - m_d[op&3] = do_sub(m_d[op&3], m_d[op>>2&3], 0); + m_d[op&3] = do_sub(m_d[op&3], m_d[op>>2&3]); break; // extx dn @@ -634,19 +679,19 @@ void mn10200_device::execute_run() // add imm8, an case 0xd0: case 0xd1: case 0xd2: case 0xd3: - m_a[op&3] = do_add(m_a[op&3], (INT8)read_arg8(m_pc), 0); + m_a[op&3] = do_add(m_a[op&3], (INT8)read_arg8(m_pc)); m_pc += 1; break; // add imm8, dn case 0xd4: case 0xd5: case 0xd6: case 0xd7: - m_d[op&3] = do_add(m_d[op&3], (INT8)read_arg8(m_pc), 0); + m_d[op&3] = do_add(m_d[op&3], (INT8)read_arg8(m_pc)); m_pc += 1; break; // cmp imm8, dn case 0xd8: case 0xd9: case 0xda: case 0xdb: - do_sub(m_d[op&3], (INT8)read_arg8(m_pc), 0); + do_sub(m_d[op&3], (INT8)read_arg8(m_pc)); m_pc += 1; break; @@ -718,7 +763,7 @@ void mn10200_device::execute_run() // bra label8 case 0xea: - do_branch(true); + do_branch(); m_pc += 1; break; @@ -733,7 +778,7 @@ void mn10200_device::execute_run() // cmp imm16, an case 0xec: case 0xed: case 0xee: case 0xef: - do_sub(m_a[op&3], read_arg16(m_pc), 0); + do_sub(m_a[op&3], read_arg16(m_pc)); m_pc += 2; break; @@ -904,17 +949,17 @@ void mn10200_device::execute_run() { // add dm, an case 0x00: - m_a[op&3] = do_add(m_a[op&3], m_d[op>>2&3], 0); + m_a[op&3] = do_add(m_a[op&3], m_d[op>>2&3]); break; // sub dm, an case 0x10: - m_a[op&3] = do_sub(m_a[op&3], m_d[op>>2&3], 0); + m_a[op&3] = do_sub(m_a[op&3], m_d[op>>2&3]); break; // cmp dm, an case 0x20: - do_sub(m_a[op&3], m_d[op>>2&3], 0); + do_sub(m_a[op&3], m_d[op>>2&3]); break; // mov dm, an @@ -924,17 +969,17 @@ void mn10200_device::execute_run() // add an, am case 0x40: - m_a[op&3] = do_add(m_a[op&3], m_a[op>>2&3], 0); + m_a[op&3] = do_add(m_a[op&3], m_a[op>>2&3]); break; // sub an, am case 0x50: - m_a[op&3] = do_sub(m_a[op&3], m_a[op>>2&3], 0); + m_a[op&3] = do_sub(m_a[op&3], m_a[op>>2&3]); break; // cmp an, am case 0x60: - do_sub(m_a[op&3], m_a[op>>2&3], 0); + do_sub(m_a[op&3], m_a[op>>2&3]); break; // mov an, am @@ -962,17 +1007,17 @@ void mn10200_device::execute_run() // add an, dm case 0xc0: - m_d[op&3] = do_add(m_d[op&3], m_a[op>>2&3], 0); + m_d[op&3] = do_add(m_d[op&3], m_a[op>>2&3]); break; // sub an, dm case 0xd0: - m_d[op&3] = do_sub(m_d[op&3], m_a[op>>2&3], 0); + m_d[op&3] = do_sub(m_d[op&3], m_a[op>>2&3]); break; // cmp an, dm case 0xe0: - do_sub(m_d[op&3], m_a[op>>2&3], 0); + do_sub(m_d[op&3], m_a[op>>2&3]); break; // mov an, dm @@ -1123,7 +1168,7 @@ void mn10200_device::execute_run() // cmp dn, dm case 0x90: case 0x91: case 0x92: case 0x93: case 0x94: case 0x95: case 0x96: case 0x97: case 0x98: case 0x99: case 0x9a: case 0x9b: case 0x9c: case 0x9d: case 0x9e: case 0x9f: - do_sub(m_d[op&3], m_d[op>>2&3], 0); + do_sub(m_d[op&3], m_d[op>>2&3]); break; // mov dn, mdr @@ -1221,22 +1266,22 @@ void mn10200_device::execute_run() // add imm24, dn case 0x60: case 0x61: case 0x62: case 0x63: - m_d[op&3] = do_add(m_d[op&3], read_arg24(m_pc), 0); + m_d[op&3] = do_add(m_d[op&3], read_arg24(m_pc)); break; // add imm24, an case 0x64: case 0x65: case 0x66: case 0x67: - m_a[op&3] = do_add(m_a[op&3], read_arg24(m_pc), 0); + m_a[op&3] = do_add(m_a[op&3], read_arg24(m_pc)); break; // sub imm24, dn case 0x68: case 0x69: case 0x6a: case 0x6b: - m_d[op&3] = do_sub(m_d[op&3], read_arg24(m_pc), 0); + m_d[op&3] = do_sub(m_d[op&3], read_arg24(m_pc)); break; // sub imm24, an case 0x6c: case 0x6d: case 0x6e: case 0x6f: - m_a[op&3] = do_sub(m_a[op&3], read_arg24(m_pc), 0); + m_a[op&3] = do_sub(m_a[op&3], read_arg24(m_pc)); break; // mov imm24, dn @@ -1251,12 +1296,12 @@ void mn10200_device::execute_run() // cmp imm24, dn case 0x78: case 0x79: case 0x7a: case 0x7b: - do_sub(m_d[op&3], read_arg24(m_pc), 0); + do_sub(m_d[op&3], read_arg24(m_pc)); break; // cmp imm24, an case 0x7c: case 0x7d: case 0x7e: case 0x7f: - do_sub(m_a[op&3], read_arg24(m_pc), 0); + do_sub(m_a[op&3], read_arg24(m_pc)); break; // mov (d24, an), dm @@ -1514,12 +1559,12 @@ void mn10200_device::execute_run() // add imm16, an case 0x08: case 0x09: case 0x0a: case 0x0b: - m_a[op&3] = do_add(m_a[op&3], (INT16)read_arg16(m_pc), 0); + m_a[op&3] = do_add(m_a[op&3], (INT16)read_arg16(m_pc)); break; // sub imm16, an case 0x0c: case 0x0d: case 0x0e: case 0x0f: - m_a[op&3] = do_sub(m_a[op&3], (INT16)read_arg16(m_pc), 0); + m_a[op&3] = do_sub(m_a[op&3], (INT16)read_arg16(m_pc)); break; // and imm16, psw @@ -1537,12 +1582,12 @@ void mn10200_device::execute_run() // add imm16, dn case 0x18: case 0x19: case 0x1a: case 0x1b: - m_d[op&3] = do_add(m_d[op&3], (INT16)read_arg16(m_pc), 0); + m_d[op&3] = do_add(m_d[op&3], (INT16)read_arg16(m_pc)); break; // sub imm16, dn case 0x1c: case 0x1d: case 0x1e: case 0x1f: - m_d[op&3] = do_sub(m_d[op&3], (INT16)read_arg16(m_pc), 0); + m_d[op&3] = do_sub(m_d[op&3], (INT16)read_arg16(m_pc)); break; // mov an, (abs16) @@ -1564,7 +1609,7 @@ void mn10200_device::execute_run() // cmp imm16, dn case 0x48: case 0x49: case 0x4a: case 0x4b: - do_sub(m_d[op&3], (INT16)read_arg16(m_pc), 0); + do_sub(m_d[op&3], (INT16)read_arg16(m_pc)); break; // xor imm16, dn @@ -1644,7 +1689,10 @@ void mn10200_device::execute_run() } -// internal i/o + +//------------------------------------------------- +// internal i/o +//------------------------------------------------- WRITE8_MEMBER(mn10200_device::io_control_w) { @@ -2007,19 +2055,19 @@ 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) @@ -2049,7 +2097,6 @@ WRITE8_MEMBER(mn10200_device::io_control_w) } - READ8_MEMBER(mn10200_device::io_control_r) { switch (offset) @@ -2151,13 +2198,13 @@ 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: |