diff options
Diffstat (limited to 'src/devices/cpu/tms1000/tms1100.cpp')
-rw-r--r-- | src/devices/cpu/tms1000/tms1100.cpp | 81 |
1 files changed, 38 insertions, 43 deletions
diff --git a/src/devices/cpu/tms1000/tms1100.cpp b/src/devices/cpu/tms1000/tms1100.cpp index 9f7d6a040b8..54d30a8348e 100644 --- a/src/devices/cpu/tms1000/tms1100.cpp +++ b/src/devices/cpu/tms1000/tms1100.cpp @@ -4,69 +4,61 @@ TMS1000 family - TMS1100, TMS1170, TMS1300, TMS1370 - TODO: - - add TMS1100C when needed +TMS1100 is nearly the same as TMS1000, some different opcodes, and with double the RAM and ROM + +TODO: +- add TMS1100C when needed */ #include "emu.h" #include "tms1100.h" #include "tms1k_dasm.h" -#include "debugger.h" -// TMS1100 is nearly the same as TMS1000, some different opcodes, and with double the RAM and ROM + +// device definitions DEFINE_DEVICE_TYPE(TMS1100, tms1100_cpu_device, "tms1100", "Texas Instruments TMS1100") // 28-pin DIP, 11 R pins DEFINE_DEVICE_TYPE(TMS1170, tms1170_cpu_device, "tms1170", "Texas Instruments TMS1170") // high voltage version DEFINE_DEVICE_TYPE(TMS1300, tms1300_cpu_device, "tms1300", "Texas Instruments TMS1300") // 40-pin DIP, 16 R pins DEFINE_DEVICE_TYPE(TMS1370, tms1370_cpu_device, "tms1370", "Texas Instruments TMS1370") // high voltage version, also seen in 28-pin package(some O/R pins unavailable) -// internal memory maps -void tms1100_cpu_device::program_11bit_8(address_map &map) -{ - map(0x000, 0x7ff).rom(); -} - -void tms1100_cpu_device::data_128x4(address_map &map) -{ - map(0x00, 0x7f).ram(); -} +tms1100_cpu_device::tms1100_cpu_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock, u8 o_pins, u8 r_pins, u8 pc_bits, u8 byte_bits, u8 x_bits, u8 stack_levels, int rom_width, address_map_constructor rom_map, int ram_width, address_map_constructor ram_map) : + tms1000_cpu_device(mconfig, type, tag, owner, clock, o_pins, r_pins, pc_bits, byte_bits, x_bits, stack_levels, rom_width, rom_map, ram_width, ram_map) +{ } +tms1100_cpu_device::tms1100_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : + tms1100_cpu_device(mconfig, TMS1100, tag, owner, clock, 8 /* o pins */, 11 /* r pins */, 6 /* pc bits */, 8 /* byte width */, 3 /* x width */, 1 /* stack levels */, 11 /* rom width */, address_map_constructor(FUNC(tms1100_cpu_device::rom_11bit), this), 7 /* ram width */, address_map_constructor(FUNC(tms1100_cpu_device::ram_7bit), this)) +{ } -// device definitions -tms1100_cpu_device::tms1100_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) - : tms1100_cpu_device(mconfig, TMS1100, tag, owner, clock, 8 /* o pins */, 11 /* r pins */, 6 /* pc bits */, 8 /* byte width */, 3 /* x width */, 11 /* prg width */, address_map_constructor(FUNC(tms1100_cpu_device::program_11bit_8), this), 7 /* data width */, address_map_constructor(FUNC(tms1100_cpu_device::data_128x4), this)) -{ -} +tms1170_cpu_device::tms1170_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : + tms1100_cpu_device(mconfig, TMS1170, tag, owner, clock, 8, 11, 6, 8, 3, 1, 11, address_map_constructor(FUNC(tms1170_cpu_device::rom_11bit), this), 7, address_map_constructor(FUNC(tms1170_cpu_device::ram_7bit), this)) +{ } -tms1100_cpu_device::tms1100_cpu_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock, u8 o_pins, u8 r_pins, u8 pc_bits, u8 byte_bits, u8 x_bits, int prgwidth, address_map_constructor program, int datawidth, address_map_constructor data) - : tms1000_cpu_device(mconfig, type, tag, owner, clock, o_pins, r_pins, pc_bits, byte_bits, x_bits, prgwidth, program, datawidth, data) -{ -} +tms1300_cpu_device::tms1300_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : + tms1100_cpu_device(mconfig, TMS1300, tag, owner, clock, 8, 16, 6, 8, 3, 1, 11, address_map_constructor(FUNC(tms1300_cpu_device::rom_11bit), this), 7, address_map_constructor(FUNC(tms1300_cpu_device::ram_7bit), this)) +{ } -tms1170_cpu_device::tms1170_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) - : tms1100_cpu_device(mconfig, TMS1170, tag, owner, clock, 8, 11, 6, 8, 3, 11, address_map_constructor(FUNC(tms1170_cpu_device::program_11bit_8), this), 7, address_map_constructor(FUNC(tms1170_cpu_device::data_128x4), this)) -{ -} +tms1370_cpu_device::tms1370_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : + tms1100_cpu_device(mconfig, TMS1370, tag, owner, clock, 8, 16, 6, 8, 3, 1, 11, address_map_constructor(FUNC(tms1370_cpu_device::rom_11bit), this), 7, address_map_constructor(FUNC(tms1370_cpu_device::ram_7bit), this)) +{ } -tms1300_cpu_device::tms1300_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) - : tms1100_cpu_device(mconfig, TMS1300, tag, owner, clock, 8, 16, 6, 8, 3, 11, address_map_constructor(FUNC(tms1300_cpu_device::program_11bit_8), this), 7, address_map_constructor(FUNC(tms1300_cpu_device::data_128x4), this)) -{ -} -tms1370_cpu_device::tms1370_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) - : tms1100_cpu_device(mconfig, TMS1370, tag, owner, clock, 8, 16, 6, 8, 3, 11, address_map_constructor(FUNC(tms1370_cpu_device::program_11bit_8), this), 7, address_map_constructor(FUNC(tms1370_cpu_device::data_128x4), this)) +// disasm +std::unique_ptr<util::disasm_interface> tms1100_cpu_device::create_disassembler() { + return std::make_unique<tms1100_disassembler>(); } -// disasm -std::unique_ptr<util::disasm_interface> tms1100_cpu_device::create_disassembler() +// device_start/reset +void tms1100_cpu_device::device_start() { - return std::make_unique<tms1100_disassembler>(); + tms1000_cpu_device::device_start(); + + state_add(++m_state_count, "CB", m_cb).formatstr("%01X"); // 8 } -// device_reset void tms1100_cpu_device::device_reset() { tms1000_cpu_device::device_reset(); @@ -84,14 +76,17 @@ void tms1100_cpu_device::device_reset() // opcode deviations void tms1100_cpu_device::op_setr() { - // SETR: same, but X register MSB must be clear - if (~m_x & (1 << (m_x_bits-1))) - tms1k_base_device::op_setr(); + // SETR: supports 5-bit index with X MSB (used when it has more than 16 R pins) + // TMS1100 manual simply says that X must be less than 4 + u8 index = BIT(m_x, m_x_bits - 1) << 4 | m_y; + m_r = m_r | (1 << index); + write_r_output(m_r); } void tms1100_cpu_device::op_rstr() { - // RSTR: same, but X register MSB must be clear - if (~m_x & (1 << (m_x_bits-1))) - tms1k_base_device::op_rstr(); + // RSTR: see SETR + u8 index = BIT(m_x, m_x_bits - 1) << 4 | m_y; + m_r = m_r & ~(1 << index); + write_r_output(m_r); } |