diff options
author | 2011-01-01 11:47:49 +0000 | |
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committer | 2011-01-01 11:47:49 +0000 | |
commit | db14e98dd0439e42945faa510b210a537341b3b7 (patch) | |
tree | 5c68a8fa4aaed5d8f5c0dbd25308a3443b72e782 /src/emu/cpu/pps4/pps4.c | |
parent | 8a21a21c464782dfd6efb4cf2399adf6994ded5f (diff) |
- Added Rockwell PPS4 CPU core (not finished) [Miodrag Milanovic]
- Added GAME_MECHANICAL flag to mark games having mechanical interface (such as pinball,redemption, bowling games ...)
- Imported games from PinMAME as skeletons
Diffstat (limited to 'src/emu/cpu/pps4/pps4.c')
-rw-r--r-- | src/emu/cpu/pps4/pps4.c | 454 |
1 files changed, 454 insertions, 0 deletions
diff --git a/src/emu/cpu/pps4/pps4.c b/src/emu/cpu/pps4/pps4.c new file mode 100644 index 00000000000..47addb75517 --- /dev/null +++ b/src/emu/cpu/pps4/pps4.c @@ -0,0 +1,454 @@ +/***************************************************************************** + * + * pps4.c + * + * Rockwell PPS-4 CPU + * + * Initial version by Miodrag Milanovic + * + *****************************************************************************/ +#include "emu.h" +#include "debugger.h" +#include "pps4.h" + +#define VERBOSE 0 + +#define LOG(x) do { if (VERBOSE) logerror x; } while (0) + +/*************************************************************************** + TYPE DEFINITIONS +***************************************************************************/ + +typedef struct _pps4_state pps4_state; +struct _pps4_state +{ + UINT8 A; // Accumulator + UINT8 X; + + PAIR P; + PAIR SA; + PAIR SB; + PAIR B; // BU + BM + BL + + UINT8 C; // Carry flag + UINT8 FF1; // Flip-flop 1 + UINT8 FF2; // Flip-flop 2 + + legacy_cpu_device *device; + const address_space *program; + direct_read_data *direct; + const address_space *data; + const address_space *io; + + int icount; +}; + +/*************************************************************************** + INLINE FUNCTIONS +***************************************************************************/ + +INLINE pps4_state *get_safe_token(device_t *device) +{ + assert(device != NULL); + assert(device->type() == PPS4); + return (pps4_state *)downcast<legacy_cpu_device *>(device)->token(); +} + +INLINE UINT8 ROP(pps4_state *cpustate) +{ + UINT8 retVal = cpustate->direct->read_decrypted_byte(cpustate->P.w.l); + cpustate->P.w.l = (cpustate->P.w.l + 1) & 0x0fff; + return retVal; +} + +INLINE UINT8 ARG(pps4_state *cpustate) +{ + UINT8 retVal = cpustate->direct->read_raw_byte(cpustate->P.w.l); + cpustate->P.w.l = (cpustate->P.w.l + 1) & 0x0fff; + return retVal; +} + +INLINE void DO_SKIP(pps4_state *cpustate) +{ + cpustate->P.w.l = (cpustate->P.w.l + 1) & 0x0fff; +} + +static void execute_one(pps4_state *cpustate, int opcode) +{ + cpustate->icount -= 1; + switch (opcode) + { + // Arithmetic instructions + case 0x0b: // AD + break; + case 0x0a: // ADC + break; + case 0x09: // ADSK + break; + case 0x08: // ADCSK + break; + case 0x60: case 0x61: case 0x62: case 0x63: + case 0x64: case 0x66: case 0x67: case 0x68: + case 0x69: case 0x6a: case 0x6b: case 0x6c: + case 0x6d: case 0x6e: + // ADI + break; + case 0x65: //DC + cpustate->A = (cpustate->A + 10) & 0x0f; + break; + // Logical instructions + case 0x0d: // AND + break; + case 0x0f: // OR + break; + case 0x0c: // EOR + break; + case 0x0e: // COMP + cpustate->A ^= 0x0f; + break; + // Data transfer instructions + case 0x20: // SC + cpustate->C = 1; + break; + case 0x24: //RC + cpustate->C = 0; + break; + case 0x22: // SF1 + cpustate->FF1 = 1; + break; + case 0x26: // RF1 + cpustate->FF1 = 0; + break; + case 0x21: // SF2 + cpustate->FF2 = 1; + break; + case 0x25: // RF2 + cpustate->FF2 = 0; + break; + case 0x30: case 0x31: case 0x32: case 0x33: + case 0x34: case 0x35: case 0x36: case 0x37: + // LD + break; + case 0x38: case 0x39: case 0x3a: case 0x3b: + case 0x3c: case 0x3d: case 0x3e: case 0x3f: + // EX + break; + case 0x28: case 0x29: case 0x2a: case 0x2b: + case 0x2c: case 0x2d: case 0x2e: case 0x2f: + // EXD + break; + case 0x70: case 0x71: case 0x72: case 0x73: + case 0x74: case 0x75: case 0x76: case 0x77: + case 0x78: case 0x79: case 0x7a: case 0x7b: + case 0x7c: case 0x7d: case 0x7e: case 0x7f: + // LDI + cpustate->A = opcode & 0x0f; + break; + case 0x12: // LAX + cpustate->A = cpustate->X; + break; + case 0x1b: // LXA + cpustate->X = cpustate->A; + break; + case 0x11: // LABL + cpustate->A = cpustate->B.w.l & 0x00f; + break; + case 0x10: // LBMX + cpustate->B.w.l &= 0xf0f; + cpustate->B.w.l |= (cpustate->X << 4); + break; + case 0x04: // LBUA + break; + case 0x19: // XABL + { + UINT8 tmp = cpustate->B.w.l & 0x00f; + cpustate->B.w.l &= 0xff0; + cpustate->B.w.l |= cpustate->A; + cpustate->A = tmp; + } + break; + case 0x18: // XBMX + { + UINT8 tmp = (cpustate->B.w.l & 0x0f0) >> 4; + cpustate->B.w.l &= 0xf0f; + cpustate->B.w.l |= (cpustate->X << 4); + cpustate->X = tmp; + } + break; + case 0x1a: // XAX + { + UINT8 tmp = cpustate->A; + cpustate->A = cpustate->X; + cpustate->X = tmp; + } + break; + case 0x06: // XS + { + PAIR tmp = cpustate->SA; + cpustate->SA = cpustate->SB; + cpustate->SB = tmp; + } + break; + case 0x6f: // CYS + break; + case 0xc0: case 0xc1: case 0xc2: case 0xc3: + case 0xc4: case 0xc5: case 0xc6: case 0xc7: + case 0xc8: case 0xc9: case 0xca: case 0xcb: + case 0xcc: case 0xcd: case 0xce: case 0xcf: + // LB + { + //UINT8 tmp = ARG(cpustate); + cpustate->icount -= 1; + } + break; + case 0x00: // LBL + { + UINT8 tmp = ARG(cpustate); + cpustate->icount -= 1; + cpustate->B.w.l = tmp; + } + break; + case 0x17: // INCB + if ((cpustate->B.w.l & 0x0f) == 0x0f) { + cpustate->B.w.l &= 0xff0; + DO_SKIP(cpustate); + } else { + cpustate->B.w.l += 1; + } + break; + case 0x1f: // DECB + if ((cpustate->B.w.l & 0x0f) == 0x00) { + cpustate->B.w.l |= 0x00f; + DO_SKIP(cpustate); + } else { + cpustate->B.w.l -= 1; + } + break; + // Control transfer instructions + case 0x80: case 0x81: case 0x82: case 0x83: + case 0x84: case 0x85: case 0x86: case 0x87: + case 0x88: case 0x89: case 0x8a: case 0x8b: + case 0x8c: case 0x8d: case 0x8e: case 0x8f: + 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: + 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: + case 0xb0: case 0xb1: case 0xb2: case 0xb3: + case 0xb4: case 0xb5: case 0xb6: case 0xb7: + case 0xb8: case 0xb9: case 0xba: case 0xbb: + case 0xbc: case 0xbd: case 0xbe: case 0xbf: + // T + cpustate->P.w.l = (cpustate->P.w.l & 0xfc0) | (opcode & 0x3f); + break; + case 0xd0: case 0xd1: case 0xd2: case 0xd3: + case 0xd4: case 0xd5: case 0xd6: case 0xd7: + case 0xd8: case 0xd9: case 0xda: case 0xdb: + case 0xdc: case 0xdd: case 0xde: case 0xdf: + case 0xe0: case 0xe1: case 0xe2: case 0xe3: + case 0xe4: case 0xe5: case 0xe6: case 0xe7: + case 0xe8: case 0xe9: case 0xea: case 0xeb: + case 0xec: case 0xed: case 0xee: case 0xef: + case 0xf0: case 0xf1: case 0xf2: case 0xf3: + case 0xf4: case 0xf5: case 0xf6: case 0xf7: + case 0xf8: case 0xf9: case 0xfa: case 0xfb: + case 0xfc: case 0xfd: case 0xfe: case 0xff: + // TM + break; + case 0x50: case 0x51: case 0x52: case 0x53: + case 0x54: case 0x55: case 0x56: case 0x57: + case 0x58: case 0x59: case 0x5a: case 0x5b: + case 0x5c: case 0x5d: case 0x5e: case 0x5f: + // TL + { + //UINT8 tmp = ARG(cpustate); + cpustate->icount -= 1; + } + break; + case 0x01: case 0x02: case 0x03: + // TML + { + //UINT8 tmp = ARG(cpustate); + cpustate->icount -= 1; + } + break; + case 0x15: // SKC + break; + case 0x1e: // SKZ + break; + case 0x40: case 0x41: case 0x42: case 0x43: + case 0x44: case 0x45: case 0x46: case 0x47: + case 0x48: case 0x49: case 0x4a: case 0x4b: + case 0x4c: case 0x4d: case 0x4e: case 0x4f: + // SKBI + break; + case 0x16: // SKF1 + break; + case 0x14: // SKF2 + break; + case 0x05: // RTN + break; + case 0x07: // RTNSK + break; + // Input/Output instructions + case 0x1c: // IOL + { + //UINT8 tmp = ARG(cpustate); + cpustate->icount -= 1; + } + break; + case 0x27: // DIA + break; + case 0x23: // DIB + break; + case 0x1d: // DOA + break; + // Special instructions + case 0x13: // SAG + break; + } +} + + +/*************************************************************************** + COMMON EXECUTION +***************************************************************************/ +static CPU_EXECUTE( pps4 ) +{ + pps4_state *cpustate = get_safe_token(device); + + do + { + debugger_instruction_hook(device, cpustate->P.d); + execute_one(cpustate, ROP(cpustate)); + + } while (cpustate->icount > 0); +} + +/*************************************************************************** + CORE INITIALIZATION +***************************************************************************/ + +static CPU_INIT( pps4 ) +{ + pps4_state *cpustate = get_safe_token(device); + + cpustate->device = device; + + cpustate->program = device->space(AS_PROGRAM); + cpustate->direct = &cpustate->program->direct(); + cpustate->data = device->space(AS_DATA); + cpustate->io = device->space(AS_IO); + + state_save_register_device_item(device, 0, cpustate->A); + state_save_register_device_item(device, 0, cpustate->X); + state_save_register_device_item(device, 0, cpustate->P); + state_save_register_device_item(device, 0, cpustate->SA); + state_save_register_device_item(device, 0, cpustate->SB); + state_save_register_device_item(device, 0, cpustate->B); + state_save_register_device_item(device, 0, cpustate->C); + state_save_register_device_item(device, 0, cpustate->FF1); + state_save_register_device_item(device, 0, cpustate->FF2); +} + +/*************************************************************************** + COMMON RESET +***************************************************************************/ + +static CPU_RESET( pps4 ) +{ + pps4_state *cpustate = get_safe_token(device); + + cpustate->A = cpustate->X = 0; + cpustate->C = cpustate->FF1 = cpustate->FF2 = 0; + + cpustate->P.d = 0; + cpustate->SA.d = 0; + cpustate->SB.d = 0; + cpustate->B.d = 0; +} + +/*************************************************************************** + COMMON STATE IMPORT/EXPORT +***************************************************************************/ + +static CPU_IMPORT_STATE( pps4 ) +{ +} + +static CPU_EXPORT_STATE( pps4 ) +{ +} + +/*************************************************************************** + COMMON SET INFO +***************************************************************************/ +static CPU_SET_INFO( pps4 ) +{ +} + +/*************************************************************************** + PPS4 GET INFO +***************************************************************************/ + +CPU_GET_INFO( pps4 ) +{ + pps4_state *cpustate = (device != NULL && device->token() != NULL) ? get_safe_token(device) : NULL; + switch (state) + { + /* --- the following bits of info are returned as 64-bit signed integers --- */ + case CPUINFO_INT_CONTEXT_SIZE: info->i = sizeof(pps4_state); break; + case CPUINFO_INT_INPUT_LINES: info->i = 0; break; + case CPUINFO_INT_DEFAULT_IRQ_VECTOR: info->i = 0; break; + case DEVINFO_INT_ENDIANNESS: info->i = ENDIANNESS_LITTLE; break; + case CPUINFO_INT_CLOCK_MULTIPLIER: info->i = 1; break; + case CPUINFO_INT_CLOCK_DIVIDER: info->i = 1; break; + case CPUINFO_INT_MIN_INSTRUCTION_BYTES: info->i = 1; break; + case CPUINFO_INT_MAX_INSTRUCTION_BYTES: info->i = 2; break; + case CPUINFO_INT_MIN_CYCLES: info->i = 1; break; + case CPUINFO_INT_MAX_CYCLES: info->i = 2; break; + + case DEVINFO_INT_DATABUS_WIDTH + ADDRESS_SPACE_PROGRAM: info->i = 8; break; + case DEVINFO_INT_ADDRBUS_WIDTH + ADDRESS_SPACE_PROGRAM: info->i = 12; break; + case DEVINFO_INT_ADDRBUS_SHIFT + ADDRESS_SPACE_PROGRAM: info->i = 0; break; + + case DEVINFO_INT_DATABUS_WIDTH + ADDRESS_SPACE_DATA: info->i = 8; break; // 4 bit for RAM + case DEVINFO_INT_ADDRBUS_WIDTH + ADDRESS_SPACE_DATA: info->i = 12; break; + case DEVINFO_INT_ADDRBUS_SHIFT + ADDRESS_SPACE_DATA: info->i = 0; break; + + case DEVINFO_INT_DATABUS_WIDTH + ADDRESS_SPACE_IO: info->i = 8; break; // 4 bit + case DEVINFO_INT_ADDRBUS_WIDTH + ADDRESS_SPACE_IO: info->i = 8; break; + case DEVINFO_INT_ADDRBUS_SHIFT + ADDRESS_SPACE_IO: info->i = 0; break; + + /* --- the following bits of info are returned as pointers to functions --- */ + case CPUINFO_FCT_SET_INFO: info->setinfo = CPU_SET_INFO_NAME(pps4); break; + case CPUINFO_FCT_INIT: info->init = CPU_INIT_NAME(pps4); break; + case CPUINFO_FCT_RESET: info->reset = CPU_RESET_NAME(pps4); break; + case CPUINFO_FCT_EXECUTE: info->execute = CPU_EXECUTE_NAME(pps4); break; + case CPUINFO_FCT_DISASSEMBLE: info->disassemble = CPU_DISASSEMBLE_NAME(pps4); break; + case CPUINFO_FCT_IMPORT_STATE: info->import_state = CPU_IMPORT_STATE_NAME(pps4); break; + case CPUINFO_FCT_EXPORT_STATE: info->export_state = CPU_EXPORT_STATE_NAME(pps4); break; + + /* --- the following bits of info are returned as pointers --- */ + case CPUINFO_PTR_INSTRUCTION_COUNTER: info->icount = &cpustate->icount; break; + + /* --- the following bits of info are returned as NULL-terminated strings --- */ + case DEVINFO_STR_NAME: strcpy(info->s, "PPS4"); break; + case DEVINFO_STR_FAMILY: strcpy(info->s, "Rockwell PPS-4"); break; + case DEVINFO_STR_VERSION: strcpy(info->s, "1.0"); break; + case DEVINFO_STR_SOURCE_FILE: strcpy(info->s, __FILE__); break; + case DEVINFO_STR_CREDITS: strcpy(info->s, "Copyright Miodrag Milanovic"); break; + + case CPUINFO_STR_FLAGS: + sprintf(info->s, "%c%c%c", + cpustate->C ? 'C':'.', + cpustate->FF1 ? '1':'.', + cpustate->FF2 ? '2':'.'); + break; + } +} + +DEFINE_LEGACY_CPU_DEVICE(PPS4, pps4); |