diff options
Diffstat (limited to 'trunk/src/emu/cpu/adsp2100/2100dasm.c')
-rw-r--r-- | trunk/src/emu/cpu/adsp2100/2100dasm.c | 551 |
1 files changed, 551 insertions, 0 deletions
diff --git a/trunk/src/emu/cpu/adsp2100/2100dasm.c b/trunk/src/emu/cpu/adsp2100/2100dasm.c new file mode 100644 index 00000000000..ec71a7d0432 --- /dev/null +++ b/trunk/src/emu/cpu/adsp2100/2100dasm.c @@ -0,0 +1,551 @@ +#include "emu.h" +#include "adsp2100.h" + +static const char *const flag_change[] = { "", "TOGGLE %s ", "RESET %s ", "SET %s " }; +static const char *const mode_change[] = { "", "", "DIS %s ", "ENA %s " }; + +static const char *const alu_xop[] = { "AX0", "AX1", "AR", "MR0", "MR1", "MR2", "SR0", "SR1" }; +static const char *const alu_yop[] = { "AY0", "AY1", "AF", "0" }; +static const char *const alu_dst[] = { "AR", "AF", "NONE" }; + +static const char *const mac_xop[] = { "MX0", "MX1", "AR", "MR0", "MR1", "MR2", "SR0", "SR1" }; +static const char *const mac_yop[] = { "MY0", "MY1", "MF", "0" }; +static const char *const mac_dst[] = { "MR", "MF", "NONE" }; + +static const char *const shift_xop[] = { "SI", "??", "AR", "MR0", "MR1", "MR2", "SR0", "SR1" }; + +static const char *const reg_grp[][16] = +{ + { "AX0", "AX1", "MX0", "MX1", "AY0", "AY1", "MY0", "MY1", "SI", "SE", "AR", "MR0", "MR1", "MR2", "SR0", "SR1" }, + { "I0", "I1", "I2", "I3", "M0", "M1", "M2", "M3", "L0", "L1", "L2", "L3", "??", "??", "??", "??" }, + { "I4", "I5", "I6", "I7", "M4", "M5", "M6", "M7", "L4", "L5", "L6", "L7", "??", "??", "??", "??" }, + { "ASTAT", "MSTAT", "SSTAT", "IMASK", "ICNTL", "CNTR", "SB", "PX", "RX0", "TX0", "RX1", "TX1", "IFC", "OWRCNTR", "??", "??" } +}; +static const char *const dual_xreg[] = { "AX0", "AX1", "MX0", "MX1" }; +static const char *const dual_yreg[] = { "AY0", "AY1", "MY0", "MY1" }; + +static const char *const condition[] = +{ + "IF EQ ", + "IF NE ", + "IF GT ", + "IF LE ", + "IF LT ", + "IF GE ", + "IF AV ", + "IF NOT AV ", + "IF AC ", + "IF NOT AC ", + "IF NEG ", + "IF POS ", + "IF MV ", + "IF NOT MV ", + "IF NOT CE ", + "" +}; + +static const char *const do_condition[] = +{ + "NE", + "EQ", + "LE", + "GT", + "GE", + "LT", + "NOT AV", + "AV", + "NOT AC", + "AC", + "POS", + "NEG", + "NOT MV", + "MV", + "CE", + "FOREVER" +}; + +static const char *const alumac_op[][2] = +{ + { "", "" }, + { "%s = %s * %s (RND)", "%s = %s * %s (RND)" }, + { "%s = MR + %s * %s (RND)", "%s = MR + %s * %s (RND)" }, + { "%s = MR - %s * %s (RND)", "%s = MR - %s * %s (RND)" }, + { "%s = %s * %s (SS)", "%s = 0" }, + { "%s = %s * %s (SU)", "%s = %s * %s (SU)" }, + { "%s = %s * %s (US)", "%s = %s * %s (US)" }, + { "%s = %s * %s (UU)", "%s = %s * %s (UU)" }, + { "%s = MR + %s * %s (SS)", "%s = MR + %s * %s (SS)" }, + { "%s = MR + %s * %s (SU)", "%s = MR + %s * %s (SU)" }, + { "%s = MR + %s * %s (US)", "%s = MR + %s * %s (US)" }, + { "%s = MR + %s * %s (UU)", "%s = MR + %s * %s (UU)" }, + { "%s = MR - %s * %s (SS)", "%s = MR - %s * %s (SS)" }, + { "%s = MR - %s * %s (SS)", "%s = MR - %s * %s (SS)" }, + { "%s = MR - %s * %s (US)", "%s = MR - %s * %s (US)" }, + { "%s = MR - %s * %s (UU)", "%s = MR - %s * %s (UU)" }, + + { "!%s = %s", "%s = 0" }, + { "!%s = %s + 1", "%s = 1" }, + { "%s = %s + %s + C", "%s = %s + %s + C" }, + { "%s = %s + %s", "%s = %s" }, + { "!%s = NOT %s", "!%s = NOT %s" }, + { "!%s = -%s", "!%s = -%s" }, + { "%s = %s - %s + C - 1", "%s = %s + C - 1" }, + { "%s = %s - %s", "%s = %s - %s" }, + { "!%s = %s - 1", "%s = -1" }, + { "!%s = %s - %s", "%s = -%s" }, + { "!%s = %s - %s + C - 1", "%s = -%s + C - 1" }, + { "%s = NOT %s", "%s = NOT %s" }, + { "%s = %s AND %s", "%s = %s AND %s" }, + { "%s = %s OR %s", "%s = %s OR %s" }, + { "%s = %s XOR %s", "%s = %s XOR %s" }, + { "%s = ABS %s", "%s = ABS %s" } +}; + +static const char *const shift_op[] = +{ + "SR = LSHIFT %s (HI)", + "SR = SR OR LSHIFT %s (HI)", + "SR = LSHIFT %s (LO)", + "SR = SR OR LSHIFT %s (LO)", + "SR = ASHIFT %s (HI)", + "SR = SR OR ASHIFT %s (HI)", + "SR = ASHIFT %s (LO)", + "SR = SR OR ASHIFT %s (LO)", + "SR = NORM %s (HI)", + "SR = SR OR NORM %s (HI)", + "SR = NORM %s (LO)", + "SR = SR OR NORM %s (LO)", + "SE = EXP %s (HI)", + "SE = EXP %s (HIX)", + "SE = EXP %s (LO)", + "SB = EXPADJ %s", +}; + +static const char *const shift_by_op[] = +{ + "SR = LSHIFT %s BY %d (HI)", + "SR = SR OR LSHIFT %s BY %d (HI)", + "SR = LSHIFT %s BY %d (LO)", + "SR = SR OR LSHIFT %s BY %d (LO)", + "SR = ASHIFT %s BY %d (HI)", + "SR = SR OR ASHIFT %s BY %d (HI)", + "SR = ASHIFT %s BY %d (LO)", + "SR = SR OR ASHIFT %s BY %d (LO)", + "???", + "???", + "???", + "???", + "???", + "???", + "???", + "???" +}; + +static const char *const constants[] = +{ + "$0001", + "$FFFE", + "$0002", + "$FFFD", + "$0004", + "$FFFB", + "$0008", + "$FFF7", + "$0010", + "$FFEF", + "$0020", + "$FFDF", + "$0040", + "$FFBF", + "$0080", + "$FF7F", + "$0100", + "$FEFF", + "$0200", + "$FDFF", + "$0400", + "$FBFF", + "$0800", + "$F7FF", + "$1000", + "$EFFF", + "$2000", + "$DFFF", + "$4000", + "$BFFF", + "$8000", + "$7FFF" +}; + + + + +static int alumac(char *buffer, int dest, int op) +{ + int opindex = (op >> 13) & 31; + const char *xop, *yop, *dst, *opstring; + + if (opindex & 16) + { + xop = alu_xop[(op >> 8) & 7]; + yop = alu_yop[(op >> 11) & 3]; + dst = alu_dst[dest]; + } + else + { + xop = mac_xop[(op >> 8) & 7]; + yop = mac_yop[(op >> 11) & 3]; + dst = mac_dst[dest]; + } + opstring = alumac_op[opindex][((op >> 11) & 3) == 3]; + if (opstring[0] == '!') + return sprintf(buffer, opstring + 1, dst, yop, xop); + else + return sprintf(buffer, opstring, dst, xop, yop); +} + + +static int aluconst(char *buffer, int dest, int op) +{ + int opindex = (op >> 13) & 31; + const char *xop, *dst, *cval, *opstring; + + if (opindex & 16) + { + xop = alu_xop[(op >> 8) & 7]; + cval = constants[((op >> 5) & 0x07) | ((op >> 8) & 0x18)]; + dst = alu_dst[dest]; + } + else + { + xop = mac_xop[(op >> 8) & 7]; + cval = xop; + dst = mac_dst[dest]; + } + opstring = alumac_op[opindex][((op >> 11) & 3) == 3]; + if (opstring[0] == '!') + return sprintf(buffer, opstring + 1, dst, cval, xop); + else + return sprintf(buffer, opstring, dst, xop, cval); +} + + +/* execute instructions on this CPU until icount expires */ +CPU_DISASSEMBLE( adsp21xx ) +{ + unsigned int op = oprom[0] | (oprom[1] << 8) | (oprom[2] << 16); + unsigned dasmflags = 0; + int temp; + + switch ((op >> 16) & 0xff) + { + case 0x00: + /* 00000000 00000000 00000000 NOP */ + sprintf(buffer, "%s", "NOP"); + break; + case 0x01: + /* 00000000 0xxxxxxx xxxxxxxx dst = IO(x) */ + /* 00000000 1xxxxxxx xxxxxxxx IO(x) = dst */ + /* ADSP-218x only */ + if ((op & 0x008000) == 0x000000) + buffer += sprintf(buffer, "%s = IO($%X)", reg_grp[0][op & 15], (op >> 4) & 0x7ff); + else + buffer += sprintf(buffer, "IO($%X) = %s", (op >> 4) & 0x7ff, reg_grp[0][op & 15]); + break; + case 0x02: + /* 00000010 0000xxxx xxxxxxxx modify flag out */ + if ((op & 0x00f000) == 0x000000) + { + buffer += sprintf(buffer, "%s", condition[op & 15]); + buffer += sprintf(buffer, flag_change[(op >> 4) & 3], "FLAG_OUT"); + buffer += sprintf(buffer, flag_change[(op >> 6) & 3], "FL0"); + buffer += sprintf(buffer, flag_change[(op >> 8) & 3], "FL1"); + buffer += sprintf(buffer, flag_change[(op >> 10) & 3], "FL2"); + } + /* 00000010 10000000 00000000 idle */ + /* 00000010 10000000 0000xxxx idle (n) */ + else if ((op & 0x00fff0) == 0x008000) + { + } + else + buffer += sprintf(buffer, "??? (%06X)", op); + break; + case 0x03: + /* 00000011 xxxxxxxx xxxxxxxx call or jump on flag in */ + if (op & 2) + buffer += sprintf(buffer, "%s", "IF FLAG_IN "); + else + buffer += sprintf(buffer, "%s", "IF NOT FLAG_IN "); + if (op & 1) + { + buffer += sprintf(buffer, "%s", "CALL "); + dasmflags = DASMFLAG_STEP_OVER; + } + else + buffer += sprintf(buffer, "%s", "JUMP "); + temp = ((op >> 4) & 0x0fff) | ((op << 10) & 0x3000); + buffer += sprintf(buffer, "$%04X", temp); + break; + case 0x04: + /* 00000100 00000000 000xxxxx stack control */ + if ((op & 0x00ffe0) == 0x000000) + { + if (op & 0x000010) + { + buffer += sprintf(buffer, "%s", "POP PC "); + dasmflags = DASMFLAG_STEP_OUT; + } + if (op & 0x000008) buffer += sprintf(buffer, "%s", "POP LOOP "); + if (op & 0x000004) buffer += sprintf(buffer, "%s", "POP CNTR "); + if ((op & 0x000003) == 0x000002) buffer += sprintf(buffer, "%s", "PUSH STAT "); + else if ((op & 0x000003) == 0x000003) buffer += sprintf(buffer, "%s", "POP STAT "); + } + else + buffer += sprintf(buffer, "??? (%06X)", op); + break; + case 0x05: + /* 00000101 00000000 00000000 saturate MR */ + if ((op & 0x00ffff) == 0x000000) + buffer += sprintf(buffer, "%s", "IF MV SAT MR"); + else + buffer += sprintf(buffer, "??? (%06X)", op); + break; + case 0x06: + /* 00000110 000xxxxx 00000000 DIVS */ + if ((op & 0x00e0ff) == 0x000000) + buffer += sprintf(buffer, "DIVS %s,%s", alu_yop[(op >> 11) & 3], alu_xop[(op >> 8) & 7]); + else + buffer += sprintf(buffer, "??? (%06X)", op); + break; + case 0x07: + /* 00000111 00010xxx 00000000 DIVQ */ + if ((op & 0x00f8ff) == 0x001000) + buffer += sprintf(buffer, "DIVQ %s", alu_xop[(op >> 8) & 7]); + else + buffer += sprintf(buffer, "??? (%06X)", op); + break; + case 0x08: + /* 00001000 00000000 0000xxxx reserved */ + buffer += sprintf(buffer, "??? (%06X)", op); + break; + case 0x09: + /* 00001001 00000000 000xxxxx modify address register */ + if ((op & 0x00ffe0) == 0x000000) + { + temp = (op >> 2) & 4; + buffer += sprintf(buffer, "MODIFY (I%d,M%d)", temp + ((op >> 2) & 3), temp + (op & 3)); + } + else + buffer += sprintf(buffer, "??? (%06X)", op); + break; + case 0x0a: + /* 00001010 00000000 0000xxxx conditional return */ + if ((op & 0x00ffe0) == 0x000000) + { + buffer += sprintf(buffer, "%s", condition[op & 15]); + if (op & 0x000010) + buffer += sprintf(buffer, "%s", "RTI"); + else + buffer += sprintf(buffer, "%s", "RTS"); + dasmflags = DASMFLAG_STEP_OUT; + } + else + buffer += sprintf(buffer, "??? (%06X)", op); + break; + case 0x0b: + /* 00001011 00000000 xx00xxxx conditional jump (indirect address) */ + if ((op & 0x00ff00) == 0x000000) + { + buffer += sprintf(buffer, "%s", condition[op & 15]); + if (op & 0x000010) + { + buffer += sprintf(buffer, "CALL (I%d)", 4 + ((op >> 6) & 3)); + dasmflags = DASMFLAG_STEP_OVER; + } + else + buffer += sprintf(buffer, "JUMP (I%d)", 4 + ((op >> 6) & 3)); + } + else + buffer += sprintf(buffer, "??? (%06X)", op); + break; + case 0x0c: + /* 00001100 xxxxxxxx xxxxxxxx mode control */ + buffer += sprintf(buffer, mode_change[(op >> 4) & 3], "SEC_REG"); + buffer += sprintf(buffer, mode_change[(op >> 6) & 3], "BIT_REV"); + buffer += sprintf(buffer, mode_change[(op >> 8) & 3], "AV_LATCH"); + buffer += sprintf(buffer, mode_change[(op >> 10) & 3], "AR_SAT"); + buffer += sprintf(buffer, mode_change[(op >> 12) & 3], "M_MODE"); + buffer += sprintf(buffer, mode_change[(op >> 14) & 3], "TIMER"); + buffer += sprintf(buffer, mode_change[(op >> 2) & 3], "G_MODE"); + break; + case 0x0d: + /* 00001101 0000xxxx xxxxxxxx internal data move */ + if ((op & 0x00f000) == 0x000000) + buffer += sprintf(buffer, "%s = %s", reg_grp[(op >> 10) & 3][(op >> 4) & 15], reg_grp[(op >> 8) & 3][op & 15]); + else + buffer += sprintf(buffer, "??? (%06X)", op); + break; + case 0x0e: + /* 00001110 0xxxxxxx xxxxxxxx conditional shift */ + if ((op & 0x0080f0) == 0x000000) + { + buffer += sprintf(buffer, "%s", condition[op & 15]); + buffer += sprintf(buffer, shift_op[(op >> 11) & 15], shift_xop[(op >> 8) & 7]); + } + else + buffer += sprintf(buffer, "??? (%06X)", op); + break; + case 0x0f: + /* 00001111 0xxxxxxx xxxxxxxx shift immediate */ + if ((op & 0x008000) == 0x000000) + buffer += sprintf(buffer, shift_by_op[(op >> 11) & 15], shift_xop[(op >> 8) & 7], (signed char)op); + else + buffer += sprintf(buffer, "??? (%06X)", op); + break; + case 0x10: + /* 00010000 0xxxxxxx xxxxxxxx shift with internal data register move */ + if ((op & 0x008000) == 0x000000) + { + buffer += sprintf(buffer, shift_op[(op >> 11) & 15], shift_xop[(op >> 8) & 7]); + buffer += sprintf(buffer, ", %s = %s", reg_grp[0][(op >> 4) & 15], reg_grp[0][op & 15]); + } + else + buffer += sprintf(buffer, "??? (%06X)", op); + break; + case 0x11: + /* 00010001 0xxxxxxx xxxxxxxx shift with pgm memory read/write */ + buffer += sprintf(buffer, shift_op[(op >> 11) & 15], shift_xop[(op >> 8) & 7]); + if (op & 0x008000) + buffer += sprintf(buffer, ", PM(I%d,M%d) = %s", 4 + ((op >> 2) & 3), 4 + (op & 3), reg_grp[0][(op >> 4) & 15]); + else + buffer += sprintf(buffer, ", %s = PM(I%d,M%d)", reg_grp[0][(op >> 4) & 15], 4 + ((op >> 2) & 3), 4 + (op & 3)); + break; + case 0x12: case 0x13: + /* 0001001x 0xxxxxxx xxxxxxxx shift with data memory read/write */ + buffer += sprintf(buffer, shift_op[(op >> 11) & 15], shift_xop[(op >> 8) & 7]); + temp = (op >> 14) & 4; + if (op & 0x008000) + buffer += sprintf(buffer, ", DM(I%d,M%d) = %s", temp + ((op >> 2) & 3), temp + (op & 3), reg_grp[0][(op >> 4) & 15]); + else + buffer += sprintf(buffer, ", %s = DM(I%d,M%d)", reg_grp[0][(op >> 4) & 15], temp + ((op >> 2) & 3), temp + (op & 3)); + break; + case 0x14: case 0x15: case 0x16: case 0x17: + /* 000101xx xxxxxxxx xxxxxxxx do until */ + buffer += sprintf(buffer, "DO $%04X UNTIL %s", (op >> 4) & 0x3fff, do_condition[op & 15]); + break; + case 0x18: case 0x19: case 0x1a: case 0x1b: case 0x1c: case 0x1d: case 0x1e: case 0x1f: + /* 00011xxx xxxxxxxx xxxxxxxx conditional jump (immediate addr) */ + if (op & 0x040000) + { + buffer += sprintf(buffer, "%sCALL $%04X", condition[op & 15], (op >> 4) & 0x3fff); + dasmflags = DASMFLAG_STEP_OVER; + } + else + buffer += sprintf(buffer, "%sJUMP $%04X", condition[op & 15], (op >> 4) & 0x3fff); + break; + case 0x20: case 0x21: case 0x22: case 0x23: case 0x24: case 0x25: case 0x26: case 0x27: + /* 00100xxx xxxxxxxx xxxxxxxx conditional ALU/MAC */ + buffer += sprintf(buffer, "%s", condition[op & 15]); + if (!(op & 0x10)) + buffer += alumac(buffer, (op >> 18) & 1, op); + else + { + /* ADSP-218x only */ + buffer += aluconst(buffer, (op >> 18) & 1, op); + } + break; + case 0x28: case 0x29: case 0x2a: case 0x2b: case 0x2c: case 0x2d: case 0x2e: case 0x2f: + /* 00101xxx xxxxxxxx xxxxxxxx ALU/MAC with internal data register move */ + if ((op & 0x0600ff) == 0x0200aa) + { + /* ADSP-218x only */ + buffer += alumac(buffer, 2, op); + } + else + { + if ((op & 0x03e000) != 0) + { + buffer += alumac(buffer, (op >> 18) & 1, op); + buffer += sprintf(buffer, ", "); + } + buffer += sprintf(buffer, "%s = %s", reg_grp[0][(op >> 4) & 15], reg_grp[0][op & 15]); + } + break; + case 0x30: case 0x31: case 0x32: case 0x33: case 0x34: case 0x35: case 0x36: case 0x37: + case 0x38: case 0x39: case 0x3a: case 0x3b: case 0x3c: case 0x3d: case 0x3e: case 0x3f: + /* 0011xxxx xxxxxxxx xxxxxxxx load non-data register immediate */ + buffer += sprintf(buffer, "%s = $%04X", reg_grp[(op >> 18) & 3][op & 15], (op >> 4) & 0x3fff); + 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: + /* 0100xxxx xxxxxxxx xxxxxxxx load data register immediate */ + buffer += sprintf(buffer, "%s = $%04X", reg_grp[0][op & 15], (op >> 4) & 0xffff); + 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: + /* 0101xxxx xxxxxxxx xxxxxxxx ALU/MAC with pgm memory read/write */ + if ((op & 0x03e000) != 0) + { + buffer += alumac(buffer, (op >> 18) & 1, op); + buffer += sprintf(buffer, ", "); + } + if (op & 0x080000) + buffer += sprintf(buffer, "PM(I%d,M%d) = %s", 4 + ((op >> 2) & 3), 4 + (op & 3), reg_grp[0][(op >> 4) & 15]); + else + buffer += sprintf(buffer, "%s = PM(I%d,M%d)", reg_grp[0][(op >> 4) & 15], 4 + ((op >> 2) & 3), 4 + (op & 3)); + break; + case 0x60: case 0x61: case 0x62: case 0x63: case 0x64: case 0x65: case 0x66: case 0x67: + case 0x68: case 0x69: case 0x6a: case 0x6b: case 0x6c: case 0x6d: case 0x6e: case 0x6f: + 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: + /* 011xxxxx xxxxxxxx xxxxxxxx ALU/MAC with data memory read/write */ + if ((op & 0x03e000) != 0) + { + buffer += alumac(buffer, (op >> 18) & 1, op); + buffer += sprintf(buffer, ", "); + } + temp = (op >> 18) & 4; + if (op & 0x080000) + buffer += sprintf(buffer, "DM(I%d,M%d) = %s", temp + ((op >> 2) & 3), temp + (op & 3), reg_grp[0][(op >> 4) & 15]); + else + buffer += sprintf(buffer, "%s = DM(I%d,M%d)", reg_grp[0][(op >> 4) & 15], temp + ((op >> 2) & 3), temp + (op & 3)); + break; + 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: + /* 100xxxxx xxxxxxxx xxxxxxxx read/write data memory (immediate addr) */ + if (op & 0x100000) + buffer += sprintf(buffer, "DM($%04X) = %s", (op >> 4) & 0x3fff, reg_grp[(op >> 18) & 3][op & 15]); + else + buffer += sprintf(buffer, "%s = DM($%04X)", reg_grp[(op >> 18) & 3][op & 15], (op >> 4) & 0x3fff); + break; + 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: + /* 101xxxxx xxxxxxxx xxxxxxxx data memory write (immediate) */ + temp = (op >> 18) & 4; + buffer += sprintf(buffer, "DM(I%d,M%d) = $%04X", temp + ((op >> 2) & 3), temp + (op & 3), (op >> 4) & 0xffff); + 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: + 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: + /* 11xxxxxx xxxxxxxx xxxxxxxx ALU/MAC with data & pgm memory read */ + if ((op & 0x03e000) != 0) + { + buffer += alumac(buffer, 0, op); + buffer += sprintf(buffer, ", "); + } + buffer += sprintf(buffer, "%s = DM(I%d,M%d), %s = PM(I%d,M%d)", dual_xreg[(op >> 18) & 3], (op >> 2) & 3, op & 3, + dual_yreg[(op >> 20) & 3], 4 + ((op >> 6) & 3), 4 + ((op >> 4) & 3)); + break; + } + + return 1 | dasmflags | DASMFLAG_SUPPORTED; +} |