diff options
Diffstat (limited to 'src/devices/cpu/tms1000/tms1000.cpp')
-rw-r--r-- | src/devices/cpu/tms1000/tms1000.cpp | 171 |
1 files changed, 79 insertions, 92 deletions
diff --git a/src/devices/cpu/tms1000/tms1000.cpp b/src/devices/cpu/tms1000/tms1000.cpp index f99aacc637f..4a20debfeeb 100644 --- a/src/devices/cpu/tms1000/tms1000.cpp +++ b/src/devices/cpu/tms1000/tms1000.cpp @@ -2,107 +2,88 @@ // copyright-holders:hap /* - TMS1000 family - TMS1000, TMS1070, TMS1040, TMS1200, TMS1700, TMS1730, - and second source Motorola MC141000, MC141200. - - TODO: - - add TMS1270 (10 O pins, how does that work?) + TMS1000 family - TMS1000, TMS1070, TMS1040, TMS1200, TMS1270, TMS1700, TMS1730 + +TMS1000 die notes: +- 64x4bit RAM array at the bottom-left +- 1024x8bit ROM array at the bottom-right + * FYI, the row-selector to the left of it is laid out as: + 3,4,11,12,19,20,27,28,35,36,43,44,51,52,59,60,0,7,8,15,16,23,24,31,32,39,40,47,48,55,56,63, + 2,5,10,13,18,21,26,29,34,37,42,45,50,53,58,61,1,6,9,14,17,22,25,30,33,38,41,46,49,54,57,62 +- 30-term microinstructions PLA(mpla) at the top half, to the right of the midline, supporting 16 microinstructions +- 20-term output PLA(opla) at the top-left +- the ALU is between the opla and mpla + +TODO: +- add Motorola MC141000/MC141200 when needed, they are CMOS MCUs based on + TMS1000/TMS1200 but not 100% the same */ #include "emu.h" #include "tms1000.h" #include "tms1k_dasm.h" -#include "debugger.h" - -// TMS1000 -// - 64x4bit RAM array at the bottom-left -// - 1024x8bit ROM array at the bottom-right -// * FYI, the row-selector to the left of it is laid out as: -// 3,4,11,12,19,20,27,28,35,36,43,44,51,52,59,60,0,7,8,15,16,23,24,31,32,39,40,47,48,55,56,63, -// 2,5,10,13,18,21,26,29,34,37,42,45,50,53,58,61,1,6,9,14,17,22,25,30,33,38,41,46,49,54,57,62 -// - 30-term microinstructions PLA(mpla) at the top half, to the right of the midline, supporting 16 microinstructions -// - 20-term output PLA(opla) at the top-left -// - the ALU is between the opla and mpla + + +// device definitions DEFINE_DEVICE_TYPE(TMS1000, tms1000_cpu_device, "tms1000", "Texas Instruments TMS1000") // 28-pin DIP, 11 R pins -DEFINE_DEVICE_TYPE(TMS1070, tms1070_cpu_device, "tms1070", "Texas Instruments TMS1070") // high voltage version -DEFINE_DEVICE_TYPE(TMS1040, tms1040_cpu_device, "tms1040", "Texas Instruments TMS1040") // same as TMS1070 with just a different pinout? +DEFINE_DEVICE_TYPE(TMS1040, tms1040_cpu_device, "tms1040", "Texas Instruments TMS1040") // high voltage version, different pinout +DEFINE_DEVICE_TYPE(TMS1070, tms1070_cpu_device, "tms1070", "Texas Instruments TMS1070") // high voltage version, output PLA is 10-bit like TMS1270 but has 8 O pins DEFINE_DEVICE_TYPE(TMS1200, tms1200_cpu_device, "tms1200", "Texas Instruments TMS1200") // 40-pin DIP, 13 R pins +DEFINE_DEVICE_TYPE(TMS1270, tms1270_cpu_device, "tms1270", "Texas Instruments TMS1270") // high voltage version, 10 O pins (output PLA order is O9,O8,O0-O7) DEFINE_DEVICE_TYPE(TMS1700, tms1700_cpu_device, "tms1700", "Texas Instruments TMS1700") // 28-pin DIP, RAM/ROM size halved, 9 R pins DEFINE_DEVICE_TYPE(TMS1730, tms1730_cpu_device, "tms1730", "Texas Instruments TMS1730") // 20-pin DIP, same die as TMS1700, package has less pins: 6 R pins, 5 O pins (output PLA is still 8-bit, O1,O3,O5 unused) -// 2nd source Motorola chips -DEFINE_DEVICE_TYPE(MC141000, mc141000_cpu_device, "mc141000", "Motorola MC141000") // CMOS, pin-compatible with TMS1000(reverse polarity) -DEFINE_DEVICE_TYPE(MC141200, mc141200_cpu_device, "mc141200", "Motorola MC141200") // CMOS, 40-pin DIP, 16 R pins +tms1000_cpu_device::tms1000_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) : + tms1k_base_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) +{ } -// internal memory maps -void tms1000_cpu_device::program_10bit_8(address_map &map) -{ - map(0x000, 0x3ff).rom(); -} +tms1000_cpu_device::tms1000_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : + tms1000_cpu_device(mconfig, TMS1000, tag, owner, clock, 8 /* o pins */, 11 /* r pins */, 6 /* pc bits */, 8 /* byte width */, 2 /* x width */, 1 /* stack levels */, 10 /* rom width */, address_map_constructor(FUNC(tms1000_cpu_device::rom_10bit), this), 6 /* ram width */, address_map_constructor(FUNC(tms1000_cpu_device::ram_6bit), this)) +{ } -void tms1000_cpu_device::data_64x4(address_map &map) -{ - map(0x00, 0x3f).ram(); -} +tms1040_cpu_device::tms1040_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : + tms1000_cpu_device(mconfig, TMS1040, tag, owner, clock, 8, 11, 6, 8, 2, 1, 10, address_map_constructor(FUNC(tms1040_cpu_device::rom_10bit), this), 6, address_map_constructor(FUNC(tms1040_cpu_device::ram_6bit), this)) +{ } -void tms1000_cpu_device::program_9bit_8(address_map &map) -{ - map(0x000, 0x1ff).mirror(0x200).rom(); -} +tms1200_cpu_device::tms1200_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : + tms1000_cpu_device(mconfig, TMS1200, tag, owner, clock, 8, 13, 6, 8, 2, 1, 10, address_map_constructor(FUNC(tms1200_cpu_device::rom_10bit), this), 6, address_map_constructor(FUNC(tms1200_cpu_device::ram_6bit), this)) +{ } -void tms1000_cpu_device::data_32x4(address_map &map) -{ - map(0x00, 0x3f).ram(); - map(0x08, 0x0f).mirror(0x30).noprw(); // override -} +tms1070_cpu_device::tms1070_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) +{ } -// device definitions -tms1000_cpu_device::tms1000_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) - : tms1000_cpu_device(mconfig, TMS1000, tag, owner, clock, 8 /* o pins */, 11 /* r pins */, 6 /* pc bits */, 8 /* byte width */, 2 /* x width */, 10 /* prg width */, address_map_constructor(FUNC(tms1000_cpu_device::program_10bit_8), this), 6 /* data width */, address_map_constructor(FUNC(tms1000_cpu_device::data_64x4), this)) -{ -} - -tms1000_cpu_device::tms1000_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) - : tms1k_base_device(mconfig, type, tag, owner, clock, o_pins, r_pins, pc_bits, byte_bits, x_bits, prgwidth, program, datawidth, data) -{ -} +tms1070_cpu_device::tms1070_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : + tms1070_cpu_device(mconfig, TMS1070, tag, owner, clock, 8, 11, 6, 8, 2, 1, 10, address_map_constructor(FUNC(tms1070_cpu_device::rom_10bit), this), 6, address_map_constructor(FUNC(tms1070_cpu_device::ram_6bit), this)) +{ } -tms1070_cpu_device::tms1070_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) - : tms1000_cpu_device(mconfig, TMS1070, tag, owner, clock, 8, 11, 6, 8, 2, 10, address_map_constructor(FUNC(tms1070_cpu_device::program_10bit_8), this), 6, address_map_constructor(FUNC(tms1070_cpu_device::data_64x4), this)) -{ -} +tms1270_cpu_device::tms1270_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : + tms1070_cpu_device(mconfig, TMS1270, tag, owner, clock, 10, 13, 6, 8, 2, 1, 10, address_map_constructor(FUNC(tms1270_cpu_device::rom_10bit), this), 6, address_map_constructor(FUNC(tms1270_cpu_device::ram_6bit), this)) +{ } -tms1040_cpu_device::tms1040_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) - : tms1000_cpu_device(mconfig, TMS1040, tag, owner, clock, 8, 11, 6, 8, 2, 10, address_map_constructor(FUNC(tms1040_cpu_device::program_10bit_8), this), 6, address_map_constructor(FUNC(tms1040_cpu_device::data_64x4), this)) -{ -} -tms1200_cpu_device::tms1200_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) - : tms1000_cpu_device(mconfig, TMS1200, tag, owner, clock, 8, 13, 6, 8, 2, 10, address_map_constructor(FUNC(tms1200_cpu_device::program_10bit_8), this), 6, address_map_constructor(FUNC(tms1200_cpu_device::data_64x4), this)) -{ -} +tms1700_cpu_device::tms1700_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : + tms1000_cpu_device(mconfig, TMS1700, tag, owner, clock, 8, 9, 6, 8, 2, 1, 10, address_map_constructor(FUNC(tms1700_cpu_device::rom_9bitm), this), 6, address_map_constructor(FUNC(tms1700_cpu_device::ram_32x4), this)) +{ } -tms1700_cpu_device::tms1700_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) - : tms1000_cpu_device(mconfig, TMS1700, tag, owner, clock, 8, 9, 6, 8, 2, 10, address_map_constructor(FUNC(tms1700_cpu_device::program_9bit_8), this), 6, address_map_constructor(FUNC(tms1700_cpu_device::data_32x4), this)) -{ -} +tms1730_cpu_device::tms1730_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : + tms1000_cpu_device(mconfig, TMS1730, tag, owner, clock, 8, 9, 6, 8, 2, 1, 10, address_map_constructor(FUNC(tms1730_cpu_device::rom_9bitm), this), 6, address_map_constructor(FUNC(tms1730_cpu_device::ram_32x4), this)) +{ } -tms1730_cpu_device::tms1730_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) - : tms1000_cpu_device(mconfig, TMS1730, tag, owner, clock, 8, 9, 6, 8, 2, 10, address_map_constructor(FUNC(tms1730_cpu_device::program_9bit_8), this), 6, address_map_constructor(FUNC(tms1730_cpu_device::data_32x4), this)) -{ -} -mc141000_cpu_device::mc141000_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) - : tms1000_cpu_device(mconfig, MC141000, tag, owner, clock, 8, 11, 6, 8, 2, 10, address_map_constructor(FUNC(mc141000_cpu_device::program_10bit_8), this), 6, address_map_constructor(FUNC(mc141000_cpu_device::data_64x4), this)) +// internal memory maps +void tms1000_cpu_device::rom_9bitm(address_map &map) { + map(0x000, 0x1ff).mirror(0x200).rom(); } -mc141200_cpu_device::mc141200_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) - : tms1000_cpu_device(mconfig, MC141200, tag, owner, clock, 8, 16, 6, 8, 2, 10, address_map_constructor(FUNC(mc141200_cpu_device::program_10bit_8), this), 6, address_map_constructor(FUNC(mc141200_cpu_device::data_64x4), this)) +void tms1000_cpu_device::ram_32x4(address_map &map) { + map(0x00, 0x3f).ram(); + map(0x08, 0x0f).mirror(0x30).noprw(); // override } @@ -110,8 +91,14 @@ mc141200_cpu_device::mc141200_cpu_device(const machine_config &mconfig, const ch void tms1000_cpu_device::device_add_mconfig(machine_config &config) { // microinstructions PLA, output PLA - PLA(config, "mpla", 8, 16, 30).set_format(pla_device::FMT::BERKELEY); - PLA(config, "opla", 5, 8, 20).set_format(pla_device::FMT::BERKELEY); + PLA(config, m_mpla, 8, 16, 30).set_format(pla_device::FMT::BERKELEY); + PLA(config, m_opla, 5, 8, 20).set_format(pla_device::FMT::BERKELEY); +} + +void tms1070_cpu_device::device_add_mconfig(machine_config &config) +{ + tms1000_cpu_device::device_add_mconfig(config); + m_opla->set_num_outputs(10); } @@ -123,21 +110,6 @@ std::unique_ptr<util::disasm_interface> tms1000_cpu_device::create_disassembler( // device_reset -u32 tms1000_cpu_device::decode_micro(u8 sel) -{ - // _____ _____ ______ _____ ______ _____ _____ _____ _____ - const u32 md[16] = { M_STSL, M_AUTY, M_AUTA, M_CIN, M_C8, M_NE, M_CKN, M_15TN, M_MTN, M_NATN, M_ATN, M_MTP, M_YTP, M_CKP, M_CKM, M_STO }; - u16 mask = m_mpla->read(sel); - mask ^= 0x3fc8; // invert active-negative - u32 decode = 0; - - for (int bit = 0; bit < 16; bit++) - if (mask & (1 << bit)) - decode |= md[bit]; - - return decode; -} - void tms1000_cpu_device::device_reset() { // common reset @@ -145,13 +117,13 @@ void tms1000_cpu_device::device_reset() // pre-decode instructionset m_fixed_decode.resize(0x100); - memset(&m_fixed_decode[0], 0, 0x100*sizeof(u32)); + memset(&m_fixed_decode[0], 0, 0x100*sizeof(u64)); m_micro_decode.resize(0x100); memset(&m_micro_decode[0], 0, 0x100*sizeof(u32)); // decode microinstructions for (int op = 0; op < 0x100; op++) - m_micro_decode[op] = decode_micro(op); + m_micro_decode[op] = m_decode_micro.isunset() ? decode_micro(op) : m_decode_micro(op); // the fixed instruction set is not programmable m_fixed_decode[0x00] = F_COMX; @@ -169,3 +141,18 @@ void tms1000_cpu_device::device_reset() for (int i = 0x80; i < 0xc0; i++) m_fixed_decode[i] = F_BR; for (int i = 0xc0; i < 0x100; i++) m_fixed_decode[i] = F_CALL; } + +u32 tms1000_cpu_device::decode_micro(offs_t offset) +{ + // _____ _____ ______ _____ ______ _____ _____ _____ _____ + const u32 md[16] = { M_STSL, M_AUTY, M_AUTA, M_CIN, M_C8, M_NE, M_CKN, M_15TN, M_MTN, M_NATN, M_ATN, M_MTP, M_YTP, M_CKP, M_CKM, M_STO }; + u16 mask = m_mpla->read(offset); + mask ^= 0x3fc8; // invert active-negative + u32 decode = 0; + + for (int bit = 0; bit < 16; bit++) + if (mask & (1 << bit)) + decode |= md[bit]; + + return decode; +} |