static void op1101(char *buffer, UINT32 pc, UINT16 opcode)
{
const char *sym;
sym = set_ea_info(0, (opcode & 0xff) * 4, EA_UINT8, EA_VALUE);
set_ea_info(1, (opcode & 0xff) * 4 + ((pc + 2) & ~3), EA_UINT32, EA_ABS_PC);
sprintf(buffer, "MOV.L @(%s,PC),%s", sym, regname[Rn]);
}
static void op0101(char *buffer, UINT32 pc, UINT16 opcode)
{
const char *sym;
sym = set_ea_info(0, (opcode & 15) * 4, EA_UINT8, EA_VALUE);
set_ea_info(1, activecpu_get_reg(SH2_R0+Rm) + (opcode & 15) * 4, EA_UINT32, EA_MEM_RD);
sprintf(buffer, "MOV.L @(%s,%s),%s\n", sym, regname[Rm], regname[Rn]);
}
static void op1001(char *buffer, UINT32 pc, UINT16 opcode)
{
const char *sym;
sym = set_ea_info(0, (opcode & 0xff) * 2, EA_UINT16, EA_VALUE);
set_ea_info(0, (opcode & 0xff) * 2 + pc + 2, EA_UINT16, EA_MEM_RD);
sprintf(buffer, "MOV.W @(%s,PC),%s", sym, regname[Rn]);
}
static void op0010(char *buffer, UINT32 pc, UINT16 opcode)
{
switch (opcode & 15)
{
case 0:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rm), EA_UINT8, EA_MEM_WR);
sprintf(buffer, "MOV.B %s,@%s", regname[Rm], regname[Rn]);
break;
case 1:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rm), EA_UINT16, EA_MEM_WR);
sprintf(buffer, "MOV.W %s,@%s", regname[Rm], regname[Rn]);
break;
case 2:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rm), EA_UINT32, EA_MEM_WR);
sprintf(buffer, "MOV.L %s,@%s", regname[Rm], regname[Rn]);
break;
case 3:
sprintf(buffer, "?????? $%04X", opcode);
break;
case 4:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rm) - 1, EA_UINT8, EA_MEM_WR);
sprintf(buffer, "MOV.B %s,@-%s", regname[Rm], regname[Rn]);
break;
case 5:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rm) - 2, EA_UINT16, EA_MEM_WR);
sprintf(buffer, "MOV.W %s,@-%s", regname[Rm], regname[Rn]);
break;
case 6:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rm) - 4, EA_UINT32, EA_MEM_WR);
sprintf(buffer, "MOV.L %s,@-%s", regname[Rm], regname[Rn]);
break;
case 7:
sprintf(buffer, "DIV0S %s,%s", regname[Rm], regname[Rn]);
break;
case 8:
sprintf(buffer, "TST %s,%s", regname[Rm], regname[Rn]);
break;
case 9:
sprintf(buffer, "AND %s,%s", regname[Rm], regname[Rn]);
break;
case 10:
sprintf(buffer, "XOR %s,%s", regname[Rm], regname[Rn]);
break;
case 11:
sprintf(buffer, "OR %s,%s", regname[Rm], regname[Rn]);
break;
case 12:
sprintf(buffer, "CMP/STR %s,%s", regname[Rm], regname[Rn]);
break;
case 13:
sprintf(buffer, "XTRCT %s,%s", regname[Rm], regname[Rn]);
break;
case 14:
sprintf(buffer, "MULU.W %s,%s", regname[Rm], regname[Rn]);
break;
case 15:
sprintf(buffer, "MULS.W %s,%s", regname[Rm], regname[Rn]);
break;
}
}
static void op0100(char *buffer, UINT32 pc, UINT16 opcode)
{
switch(opcode & 0x3F)
{
case 0x00:
sprintf(buffer, "SHLL %s", regname[Rn]);
break;
case 0x01:
sprintf(buffer, "SHLR %s", regname[Rn]);
break;
case 0x02:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rn) - 4, EA_UINT32, EA_MEM_WR);
sprintf(buffer, "STS.L MACH,@-%s", regname[Rn]);
break;
case 0x03:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rn) - 4, EA_UINT32, EA_MEM_WR);
sprintf(buffer, "STC.L SR,@-%s", regname[Rn]);
break;
case 0x04:
sprintf(buffer, "ROTL %s", regname[Rn]);
break;
case 0x05:
sprintf(buffer, "ROTR %s", regname[Rn]);
break;
case 0x06:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rn), EA_UINT32, EA_MEM_RD);
sprintf(buffer, "LDS.L @%s+,MACH", regname[Rn]);
break;
case 0x07:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rn), EA_UINT32, EA_MEM_RD);
sprintf(buffer, "LDC.L @%s+,SR", regname[Rn]);
break;
case 0x08:
sprintf(buffer, "SHLL2 %s", regname[Rn]);
break;
case 0x09:
sprintf(buffer, "SHLR2 %s", regname[Rn]);
break;
case 0x0a:
sprintf(buffer, "LDS %s,MACH", regname[Rn]);
break;
case 0x0b:
sprintf(buffer, "JSR %s", regname[Rn]);
break;
case 0x0e:
sprintf(buffer, "LDC %s,SR", regname[Rn]);
break;
case 0x10:
sprintf(buffer, "DT %s", regname[Rn]);
break;
case 0x11:
sprintf(buffer, "CMP/PZ %s", regname[Rn]);
break;
case 0x12:
sprintf(buffer, "STS.L MACL,@-%s", regname[Rn]);
break;
case 0x13:
sprintf(buffer, "STC.L GBR,@-%s", regname[Rn]);
break;
case 0x15:
sprintf(buffer, "CMP/PL %s", regname[Rn]);
break;
case 0x16:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rn), EA_UINT32, EA_MEM_RD);
sprintf(buffer, "LDS.L @%s+,MACL", regname[Rn]);
break;
case 0x17:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rn), EA_UINT32, EA_MEM_RD);
sprintf(buffer, "LDC.L @%s+,GBR", regname[Rn]);
break;
case 0x18:
sprintf(buffer, "SHLL8 %s", regname[Rn]);
break;
case 0x19:
sprintf(buffer, "SHLR8 %s", regname[Rn]);
break;
case 0x1a:
sprintf(buffer, "LDS %s,MACL", regname[Rn]);
break;
case 0x1b:
sprintf(buffer, "TAS %s", regname[Rn]);
break;
case 0x1e:
sprintf(buffer, "LDC %s,GBR", regname[Rn]);
break;
case 0x20:
sprintf(buffer, "SHAL %s", regname[Rn]);
break;
case 0x21:
sprintf(buffer, "SHAR %s", regname[Rn]);
break;
case 0x22:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rn) - 4, EA_UINT32, EA_MEM_WR);
sprintf(buffer, "STS.L PR,@-%s", regname[Rn]);
break;
case 0x23:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rn) - 4, EA_UINT32, EA_MEM_WR);
sprintf(buffer, "STC.L VBR,@-%s", regname[Rn]);
break;
case 0x24:
sprintf(buffer, "ROTCL %s", regname[Rn]);
break;
case 0x25:
sprintf(buffer, "ROTCR %s", regname[Rn]);
break;
case 0x26:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rn), EA_UINT32, EA_MEM_RD);
sprintf(buffer, "LDS.L @%s+,PR", regname[Rn]);
break;
case 0x27:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rn), EA_UINT32, EA_MEM_RD);
sprintf(buffer, "LDC.L @%s+,VBR", regname[Rn]);
break;
case 0x28:
sprintf(buffer, "SHLL16 %s", regname[Rn]);
break;
case 0x29:
sprintf(buffer, "SHLR16 %s", regname[Rn]);
break;
case 0x2a:
sprintf(buffer, "LDS %s,PR", regname[Rn]);
break;
case 0x2b:
sprintf(buffer, "JMP %s", regname[Rn]);
break;
case 0x2e:
sprintf(buffer, "LDC %s,VBR", regname[Rn]);
break;
default:
if ((opcode & 15) == 15)
{
set_ea_info(0, activecpu_get_reg(SH2_R0+Rm), EA_UINT32, EA_MEM_RD);
set_ea_info(1, activecpu_get_reg(SH2_R0+Rn), EA_UINT32, EA_MEM_RD);
sprintf(buffer, "MAC.W @%s+,@%s+", regname[Rm], regname[Rn]);
}
else
sprintf(buffer, "?????? $%04X", opcode);
}
}
static void op1100(char *buffer, UINT32 pc, UINT16 opcode)
{
const char *sym;
switch((opcode >> 8) & 15)
{
case 0:
sym = set_ea_info(0, opcode & 0xff, EA_UINT8, EA_VALUE);
set_ea_info(1, activecpu_get_reg(SH2_GBR) + (opcode & 0xff), EA_UINT8, EA_MEM_WR);
sprintf(buffer, "MOV.B R0,@(%s,GBR)", sym);
break;
case 1:
sym = set_ea_info(0, (opcode & 0xff) * 2, EA_UINT16, EA_VALUE);
set_ea_info(1, (opcode & 0xff) * 2 + activecpu_get_reg(SH2_GBR), EA_UINT16, EA_MEM_WR);
sprintf(buffer, "MOV.W R0,@(%s,GBR)", sym);
break;
case 2:
sym = set_ea_info(0, (opcode & 0xff) * 4, EA_UINT16, EA_VALUE);
set_ea_info(1, (opcode & 0xff) * 4 + activecpu_get_reg(SH2_GBR), EA_UINT32, EA_MEM_WR);
sprintf(buffer, "MOV.L R0,@(%s,GBR)", sym);
break;
case 3:
sym = set_ea_info(0, opcode & 0xff, EA_UINT8, EA_VALUE);
sprintf(buffer, "TRAPA #%s", sym);
break;
case 4:
sym = set_ea_info(0, opcode & 0xff, EA_UINT8, EA_VALUE);
set_ea_info(1, activecpu_get_reg(SH2_GBR) + (opcode & 0xff), EA_UINT8, EA_MEM_RD);
sprintf(buffer, "MOV.B @(%s,GBR),R0", sym);
break;
case 5:
sym = set_ea_info(0, (opcode & 0xff) * 2, EA_UINT16, EA_VALUE);
set_ea_info(1, (opcode & 0xff) * 2 + activecpu_get_reg(SH2_GBR), EA_UINT16, EA_MEM_RD);
sprintf(buffer, "MOV.W @(%s,GBR),R0", sym);
break;
case 6:
sym = set_ea_info(0, (opcode & 0xff) * 4, EA_UINT16, EA_VALUE);
set_ea_info(1, (opcode & 0xff) * 4 + activecpu_get_reg(SH2_GBR), EA_UINT32, EA_MEM_RD);
sprintf(buffer, "MOV.L @(%s,GBR),R0", sym);
break;
case 7:
sym = set_ea_info(0, (opcode & 0xff) * 4, EA_UINT16, EA_VALUE);
set_ea_info(1, (opcode & 0xff) * 4 + pc + 2, EA_UINT32, EA_ABS_PC);
sprintf(buffer, "MOVA @(%s,PC),R0", sym);
break;
case 8:
sym = set_ea_info(0, opcode & 0xff, EA_UINT8, EA_VALUE);
sprintf(buffer, "TST #%s,R0", sym);
break;
case 9:
sym = set_ea_info(0, opcode & 0xff, EA_UINT8, EA_VALUE);
sprintf(buffer, "AND #%s,R0", sym);
break;
case 10:
sym = set_ea_info(0, opcode & 0xff, EA_UINT8, EA_VALUE);
sprintf(buffer, "XOR #%s,R0", sym);
break;
case 11:
sym = set_ea_info(0, opcode & 0xff, EA_UINT8, EA_VALUE);
sprintf(buffer, "OR #%s,R0", sym);
break;
case 12:
sym = set_ea_info(0, opcode & 0xff, EA_UINT8, EA_VALUE);
set_ea_info(1, activecpu_get_reg(SH2_R0) + activecpu_get_reg(SH2_GBR), EA_UINT8, EA_MEM_RD);
sprintf(buffer, "TST.B #%s,@(R0,GBR)", sym);
break;
case 13:
sym = set_ea_info(0, opcode & 0xff, EA_UINT8, EA_VALUE);
set_ea_info(1, activecpu_get_reg(SH2_R0) + activecpu_get_reg(SH2_GBR), EA_UINT8, EA_MEM_RDWR);
sprintf(buffer, "AND.B #%s,@(R0,GBR)", sym);
break;
case 14:
sym = set_ea_info(0, opcode & 0xff, EA_UINT8, EA_VALUE);
set_ea_info(1, activecpu_get_reg(SH2_R0) + activecpu_get_reg(SH2_GBR), EA_UINT8, EA_MEM_RDWR);
sprintf(buffer, "XOR.B #%s,@(R0,GBR)", sym);
break;
case 15:
sym = set_ea_info(0, opcode & 0xff, EA_UINT8, EA_VALUE);
set_ea_info(1, activecpu_get_reg(SH2_R0) + activecpu_get_reg(SH2_GBR), EA_UINT8, EA_MEM_RDWR);
sprintf(buffer, "OR.B #%s,@(R0,GBR)", sym);
break;
}
}
static void op1011(char *buffer, UINT32 pc, UINT16 opcode)
{
const char *sym;
sym = set_ea_info(0, SIGNX12(opcode & 0xfff) * 2 + pc + 2, EA_UINT32, EA_ABS_PC);
sprintf(buffer, "BSR %s", sym);
}
static void op1000(char *buffer, UINT32 pc, UINT16 opcode)
{
const char *sym;
switch((opcode >> 8) & 15)
{
case 0:
sym = set_ea_info(0, (opcode & 15), EA_UINT8, EA_VALUE);
set_ea_info(1, activecpu_get_reg(SH2_R0+Rm) + (opcode & 15), EA_UINT8, EA_MEM_WR);
sprintf(buffer, "MOV.B R0,@(%s,%s)", sym, regname[Rm]);
break;
case 1:
sym = set_ea_info(0, (opcode & 15) * 2, EA_UINT8, EA_VALUE);
set_ea_info(1, activecpu_get_reg(SH2_R0+Rm) + (opcode & 15)*2, EA_UINT16, EA_MEM_WR);
sprintf(buffer, "MOV.W R0,@(%s,%s)", sym, regname[Rm]);
break;
case 4:
sym = set_ea_info(0, (opcode & 15), EA_UINT8, EA_VALUE);
set_ea_info(1, activecpu_get_reg(SH2_R0+Rm) + (opcode & 15), EA_UINT8, EA_MEM_RD);
sprintf(buffer, "MOV.B @(%s,%s),R0", sym, regname[Rm]);
break;
case 5:
sym = set_ea_info(0, (opcode & 15), EA_UINT8, EA_VALUE);
set_ea_info(1, activecpu_get_reg(SH2_R0+Rm) + (opcode & 15)*2, EA_UINT16, EA_MEM_RD);
sprintf(buffer, "MOV.W @(%s,%s),R0", sym, regname[Rm]);
break;
case 8:
sym = set_ea_info(0, (opcode & 0xff), EA_UINT8, EA_VALUE);
sprintf(buffer, "CMP/EQ #%s,R0", sym);
break;
case 9:
sym = set_ea_info(0, pc, SIGNX8(opcode & 0xff) * 2 + 2, EA_REL_PC);
sprintf(buffer, "BT %s", sym);
break;
case 11:
sym = set_ea_info(0, pc, SIGNX8(opcode & 0xff) * 2 + 2, EA_REL_PC);
sprintf(buffer, "BF %s", sym);
break;
case 13:
sym = set_ea_info(0, pc, SIGNX8(opcode & 0xff) * 2 + 2, EA_REL_PC);
sprintf(buffer, "BTS %s", sym);
break;
case 15:
sym = set_ea_info(0, pc, SIGNX8(opcode & 0xff) * 2 + 2, EA_REL_PC);
sprintf(buffer, "BFS %s", sym);
break;
default :
sym = set_ea_info(0, opcode, EA_UINT16, EA_VALUE);
sprintf(buffer, "invalid %s\n", sym);
}
}
static void op0111(char *buffer, UINT32 pc, UINT16 opcode)
{
const char *sym;
sym = set_ea_info(0, opcode & 0xff, EA_UINT8, EA_VALUE);
sprintf(buffer, "ADD #%s,%s\n", sym, regname[Rn]);
}
unsigned Dasm7000 (char *buffer, unsigned pc)
{
int opcode, i, size = 1;
const char *sym1;
opcode = cpu_readop(pc++);
for( i=0; i<sizeof(opcodes) / sizeof(opcodeinfo); i++ )
{
if( opcode == opcodes[i].opcode )
{
/* We found a match */
int j,k,vector;
UINT8 a;
INT8 b;
UINT16 c;
INT16 d;
buffer += sprintf (buffer, "%s", opcodes[i].name);
j=opcodes[i].operand;
for( k=0; k<4; k++ )
{
switch( of[j].decode[k] )
{
case DONE:
return size;
case NONE:
buffer += sprintf (buffer, "%s", of[j].opstr[k]);
break;
case UI8:
a = (UINT8)cpu_readop( pc++ );
buffer += sprintf(buffer, of[j].opstr[k], (unsigned int)a);
size += 1;
break;
case I8:
b = (INT8)cpu_readop( pc++ );
buffer += sprintf (buffer, of[j].opstr[k], (INT8)b);
size += 1;
break;
case UI16:
c = (UINT16)cpu_readop(pc++);
c <<= 8;
c += cpu_readop(pc++);
buffer += sprintf (buffer, of[j].opstr[k], (unsigned int)c);
size += 2;
break;
case I16:
d = (INT16)cpu_readop(pc++);
d <<= 8;
d += cpu_readop(pc++);
buffer += sprintf (buffer, of[j].opstr[k], (signed int)d);
size += 2;
break;
case PCREL:
b = (INT8)cpu_readop( pc++ );
sym1 = set_ea_info(EA_DST, pc, b, EA_REL_PC);
buffer += sprintf (buffer, of[j].opstr[k], sym1);
size += 1;
break;
case PCABS:
c = (UINT16)cpu_readop(pc++);
c <<= 8;
c += cpu_readop(pc++);
sym1 = set_ea_info(EA_DST, c, EA_UINT16, EA_ABS_PC);
buffer += sprintf (buffer, of[j].opstr[k], sym1);
size += 2;
break;
case TRAP:
vector = 0xffff - ((0xff - opcode) * 2);
c = (UINT16)((cpu_readop( vector-1 ) << 8) + cpu_readop( vector ));
sym1 = set_ea_info(EA_DST, c, EA_UINT16, EA_ABS_PC);
break;
}
}
return size;
}
}
/* No Match */
strcpy (buffer, "Illegal Opcode");
return size;
}
unsigned sm8500_dasm( char *buffer, offs_t pc, UINT8 *oprom, UINT8 *opram, int bytes )
{
const sm8500dasm *instr;
const char *symbol, *symbol2;
char *dst;
UINT8 op;
INT8 offset = 0;
UINT16 ea = 0, ea2 = 0;
int pos = 0;
dst = buffer;
op = oprom[pos++];
instr = &mnemonic[op];
if ( instr->arguments )
{
if ( instr->arguments != AM_1A || instr->arguments != AM_1B || instr->arguments != AM_4F ) {
dst += sprintf( dst, "%-4s ", s_mnemonic[ instr->mnemonic ] );
}
switch( instr->arguments ) {
case AM_R:
ea = oprom[pos++];
set_ea_info( 0, ea, EA_UINT8, instr->access );
dst += sprintf( dst, "R%02Xh", ea );
break;
case AM_iR:
ea = oprom[pos++];
symbol = set_ea_info( 1, ea, EA_UINT8, EA_VALUE );
ea = oprom[pos++];
set_ea_info( 0, ea, EA_UINT8, instr->access );
dst += sprintf( dst, "R%02Xh, %s", ea, symbol );
break;
case AM_iS:
ea = oprom[pos++];
symbol = set_ea_info( 1, ea, EA_UINT8, EA_VALUE );
ea = oprom[pos++];
set_ea_info( 0, ea, EA_UINT8, instr->access );
dst += sprintf( dst, "RR%02Xh, %s", ea, symbol );
break;
case AM_Sw:
ea2 = oprom[pos++];
ea = oprom[pos++] << 8;
ea += oprom[pos++];
symbol = set_ea_info( 1, ea, EA_UINT16, EA_VALUE );
set_ea_info( 0, ea2, EA_UINT16, instr->access );
dst+= sprintf( dst, "RR%02Xh, %s", ea2, symbol );
break;
case AM_rib:
ea = oprom[pos++];
symbol = set_ea_info( 1, ea, EA_UINT8, EA_VALUE );
set_ea_info( 0, (op & 0x07), EA_UINT8, instr->access );
dst += sprintf( dst, "r%02Xh, %s", op & 0x07, symbol );
break;
case AM_riw:
ea = oprom[pos++] << 8;
ea += oprom[pos++];
symbol = set_ea_info( 1, ea, EA_UINT16, EA_VALUE );
set_ea_info( 0, (op & 0x07), EA_UINT16, instr->access );
dst += sprintf( dst, "rr%02Xh, %s", sm8500_b2w[op & 0x07], symbol );
break;
case AM_rmb:
ea = oprom[pos++];
dst += sprintf( dst, "r%02Xh,", ( ea >> 3 ) & 0x07 );
switch( ea & 0xC0 ) {
case 0x00:
dst += sprintf( dst, "@r%02Xh", ea & 0x07 ); break;
case 0x40:
dst += sprintf( dst, "(r%02Xh)+", ea & 0x07 ); break;
case 0x80:
ea2 = oprom[pos++];
symbol2 = set_ea_info( 0, ea2, EA_UINT8, EA_VALUE );
if ( ea & 0x07 ) {
dst += sprintf( dst, "%s(r%02Xh)", symbol2, ea & 0x07 );
} else {
dst += sprintf( dst, "@%s", symbol2 );
}
break;
case 0xC0:
dst += sprintf( dst, "-(r%02Xh)", ea & 0x07 ); break;
}
break;
case AM_mbr:
ea = oprom[pos++];
switch( ea & 0xC0 ) {
case 0x00:
dst += sprintf( dst, "@r%02Xh", ea & 0x07 ); break;
case 0x40:
dst += sprintf( dst, "(r%02Xh)+", ea & 0x07 ); break;
case 0x80:
ea2 = oprom[pos++];
symbol2 = set_ea_info( 0, ea2, EA_UINT8, EA_VALUE );
if ( ea & 0x07 ) {
dst += sprintf( dst, "%s(r%02Xh)", symbol2, ea & 0x07 );
} else {
dst += sprintf( dst, "@%s", symbol2 );
}
break;
case 0xC0:
dst += sprintf( dst, "-(r%02Xh)", ea & 0x07 ); break;
}
dst += sprintf( dst, ",r%02Xh", ( ea >> 3 ) & 0x07 );
break;
case AM_rmw:
ea = oprom[pos++];
dst += sprintf( dst, "r%02Xh,", ( ea >> 3 ) & 0x07 );
switch( ea & 0xC0 ) {
case 0x00:
dst += sprintf( dst, "@rr%02Xh", sm8500_b2w[ea & 0x07] ); break;
case 0x40:
dst += sprintf( dst, "(rr%02Xh)+", sm8500_b2w[ea & 0x07] ); break;
case 0x80:
ea2 = oprom[pos++] << 8;
ea2 += oprom[pos++];
symbol2 = set_ea_info( 0, ea2, EA_UINT16, EA_VALUE );
if ( ea & 0x07 ) {
dst += sprintf( dst, "%s(rr%02Xh)", symbol2, sm8500_b2w[ea & 0x07] );
} else {
dst += sprintf( dst, "@%s", symbol2 );
}
break;
case 0xC0:
dst += sprintf( dst, "-(rr%02Xh)", sm8500_b2w[ea & 0x07] ); break;
}
break;
case AM_mwr:
ea = oprom[pos++];
switch( ea & 0xC0 ) {
case 0x00:
dst += sprintf( dst, "@rr%02Xh", sm8500_b2w[ea & 0x07] ); break;
case 0x40:
dst += sprintf( dst, "(rr%02Xh)+", sm8500_b2w[ea & 0x07] ); break;
case 0x80:
ea2 = oprom[pos++] << 8;
ea2 += oprom[pos++];
symbol2 = set_ea_info( 0, ea2, EA_UINT16, EA_VALUE );
if ( ea & 0x07 ) {
dst += sprintf( dst, "%s(rr%02Xh)", symbol2, sm8500_b2w[ea & 0x07] );
} else {
dst += sprintf( dst, "@%s", symbol2 );
}
break;
case 0xC0:
dst += sprintf( dst, "-(rr%02Xh)", sm8500_b2w[ea & 0x07] ); break;
}
dst += sprintf( dst, ",r%02Xh", ( ea >> 3 ) & 0x07 );
break;
case AM_smw:
ea = oprom[pos++];
dst += sprintf( dst, "rr%02Xh,", sm8500_b2w[( ea >> 3 ) & 0x07] );
switch( ea & 0xC0 ) {
case 0x00:
dst += sprintf( dst, "@rr%02Xh", sm8500_b2w[ea & 0x07] ); break;
case 0x40:
dst += sprintf( dst, "(rr%02Xh)+", sm8500_b2w[ea & 0x07] ); break;
case 0x80:
ea2 = oprom[pos++] << 8;
ea2 += oprom[pos++];
symbol2 = set_ea_info( 0, ea2, EA_UINT16, EA_VALUE );
if ( ea & 0x07 ) {
dst += sprintf( dst, "%s(rr%02Xh)", symbol2, sm8500_b2w[ea & 0x07] );
} else {
dst += sprintf( dst, "@%s", symbol2 );
}
break;
case 0xC0:
dst += sprintf( dst, "-(rr%02Xh)", sm8500_b2w[ea & 0x07] ); break;
}
break;
case AM_mws:
ea = oprom[pos++];
switch( ea & 0xC0 ) {
case 0x00:
dst += sprintf( dst, "@rr%02Xh", sm8500_b2w[ea & 0x07] ); break;
case 0x40:
dst += sprintf( dst, "(rr%02Xh)+", sm8500_b2w[ea & 0x07] ); break;
case 0x80:
ea2 = oprom[pos++] << 8;
ea2 += oprom[pos++];
symbol2 = set_ea_info( 0, ea2, EA_UINT16, EA_VALUE );
if ( ea & 0x07 ) {
dst += sprintf( dst, "%s(rr%02Xh)", symbol2, sm8500_b2w[ea & 0x07] );
} else {
dst += sprintf( dst, "@%s", symbol2 );
}
break;
case 0xC0:
dst += sprintf( dst, "-(rr%02Xh)", sm8500_b2w[ea & 0x07] ); break;
}
dst += sprintf( dst, ",rr%02Xh", sm8500_b2w[( ea >> 3 ) & 0x07] );
break;
case AM_cbr:
offset = (INT8) oprom[pos++];
symbol = set_ea_info( 0, pc + pos, offset, instr->access );
dst += sprintf( dst, "%s,%s", sm8500_cond[ op & 0x0F ], symbol );
break;
case AM_rbr:
offset = (INT8) oprom[pos++];
symbol = set_ea_info( 0, pc + pos, offset, instr->access );
dst += sprintf( dst, "r%02Xh,%s", op & 0x07, symbol );
break;
case AM_cjp:
ea = oprom[pos++] << 8;
ea += oprom[pos++];
symbol = set_ea_info( 0, ea, EA_UINT16, instr->access );
dst += sprintf( dst, "%s,%s", sm8500_cond[ op & 0x0F], symbol );
break;
case AM_rr:
ea = oprom[pos++];
switch( ea & 0xc0 ) {
case 0x00:
dst += sprintf( dst, "r%02Xh,r%02Xh", (ea >> 3 ) & 0x07, ea & 0x07 );
break;
case 0x40:
case 0x80:
case 0xC0:
dst += sprintf( dst, "undef" );
break;
}
break;
case AM_r1:
ea = oprom[pos++];
switch( ea & 0xC0 ) {
dst += sprintf( dst, "@r%02Xh", (ea >> 3 ) & 0x07 );
break;
case 0x40:
case 0x80:
case 0xC0:
dst += sprintf( dst, "undef" );
break;
}
break;
case AM_S:
ea = oprom[pos++];
dst += sprintf( dst, "RR%02Xh", ea );
break;
case AM_pi:
ea = oprom[pos++];
symbol = set_ea_info( 1, ea, EA_UINT8, EA_VALUE );
set_ea_info( 0, 0x10 + (op & 0x07), EA_UINT8, instr->access );
dst += sprintf( dst, "r%02Xh, %s", 0x10 + (op & 0x07), symbol );
break;
case AM_Ri:
ea = oprom[pos++];
ea2 = oprom[pos++];
symbol = set_ea_info( 0, ea2, EA_UINT8, EA_VALUE );
dst += sprintf( dst, "R%02Xh,%s", ea, symbol );
break;
case AM_i:
ea = oprom[pos++];
symbol = set_ea_info( 0, ea, EA_UINT8, EA_VALUE );
dst += sprintf( dst, "%s", symbol );
break;
case AM_ii:
ea = oprom[pos++] << 8;
ea += oprom[pos++];
symbol = set_ea_info( 0, ea, EA_UINT16, EA_VALUE );
dst += sprintf( dst, "%s", symbol );
break;
case AM_ss:
ea = oprom[pos++];
switch( ea & 0xC0 ) {
case 0x00:
dst += sprintf( dst, "rr%02Xh,rr%02Xh", sm8500_b2w[( ea >> 3 ) & 0x07], sm8500_b2w[ea & 0x07] ); break;
case 0x40:
dst += sprintf( dst, "undef" ); break;
case 0x80:
dst += sprintf( dst, "undef" ); break;
case 0xC0:
dst += sprintf( dst, "undef" ); break;
}
break;
case AM_RR:
ea = oprom[pos++];
ea2 = oprom[pos++];
dst += sprintf( dst, "R%02Xh,R%02Xh", ea2, ea );
break;
case AM_2:
ea = oprom[pos++];
switch( ea & 0xC0 ) {
case 0x00:
dst += sprintf( dst, "rr%02Xh", sm8500_b2w[ea & 0x07] ); break;
case 0x40:
ea2 = oprom[pos++] << 8;
ea2 += oprom[pos++];
symbol = set_ea_info( 0, ea2, EA_UINT16, EA_VALUE );
if ( ea & 0x38 ) {
dst += sprintf( dst, "@%s(r%02Xh)", symbol, ( ea >> 3 ) & 0x07 );
} else {
dst += sprintf( dst, "@%s", symbol );
}
break;
case 0x80:
dst += sprintf( dst, "undef" ); break;
case 0xC0:
dst += sprintf( dst, "undef" ); break;
}
break;
case AM_SS:
ea = oprom[pos++];
ea2 = oprom[pos++];
dst += sprintf( dst, "RR%02Xh,RR%02Xh", ea2, ea );
break;
case AM_bR:
ea = oprom[pos++];
ea2 = oprom[pos++];
switch( ea & 0xC0 ) {
case 0x00:
dst += sprintf( dst, "BF,R%02Xh,#%d", ea2, ea & 0x07 ); break;
case 0x40:
dst += sprintf( dst, "R%02Xh,#%d,BF", ea2, ea & 0x07 ); break;
case 0x80:
dst += sprintf( dst, "undef" ); break;
case 0xC0:
dst += sprintf( dst, "undef" ); break;
}
break;
case AM_Rbr:
ea = oprom[pos++];
offset = (INT8) oprom[pos++];
symbol = set_ea_info( 0, pc + pos, offset, instr->access );
dst += sprintf( dst, "R%02Xh,#%d,%s", ea, op & 0x07, symbol );
break;
case AM_Rb:
ea = oprom[pos++];
dst += sprintf( dst, "R%02Xh,#%d", ea, op&0x07 );
break;
case AM_rR:
ea = oprom[pos++];
dst += sprintf( dst, "r%02Xh,R%02Xh", op & 0x07, ea );
break;
case AM_Rr:
ea = oprom[pos++];
dst += sprintf( dst, "R%02Xh,r%02Xh", ea, op & 0x07 );
break;
case AM_Rii:
ea = oprom[pos++];
dst += sprintf( dst, "R%02Xh,", ea );
ea = oprom[pos++];
symbol = set_ea_info( 0, ea, EA_UINT8, EA_VALUE );
dst += sprintf( dst, "%s,", symbol );
ea = oprom[pos++];
symbol = set_ea_info( 0, ea, EA_UINT8, EA_VALUE );
dst += sprintf( dst, "%s", symbol );
break;
case AM_RiR:
ea = oprom[pos++];
dst += sprintf( dst, "R%02Xh,", ea );
ea = oprom[pos++];
symbol = set_ea_info( 0, ea, EA_UINT8, EA_VALUE );
dst += sprintf( dst, "%s,", symbol );
ea = oprom[pos++];
dst += sprintf( dst, "R%02Xh", ea );
break;
case AM_riB:
ea = oprom[pos++];
ea2 = oprom[pos++];
switch( ea & 0xC0 ) {
case 0x00:
dst += sprintf( dst, "#%2x(r%02Xh),#%d", ea2, ea >> 3, ea & 0x07 );
break;
case 0x40:
dst += sprintf( dst, "undef" ); break;
case 0x80:
dst += sprintf( dst, "undef" ); break;
case 0xC0:
dst += sprintf( dst, "undef" ); break;
}
break;
case AM_CALS:
ea = oprom[pos++];
symbol = set_ea_info( 0, 0x1000 | ( ( op & 0x0f ) << 8 ) | ea, EA_UINT16, EA_VALUE );
dst += sprintf( dst, "%s", symbol );
break;
case AM_bid:
ea = oprom[pos++];
ea2 = oprom[pos++];
if ( ea & 0x38 ) {
symbol = set_ea_info( 0, ea2, EA_UINT8, EA_VALUE );
dst += sprintf( dst, "%s(r%02Xh)", symbol, ( ea >> 3 ) & 0x07 );
} else {
static void op1110(char *buffer, UINT32 pc, UINT16 opcode)
{
const char *sym;
sym = set_ea_info(0, (UINT32)(INT32)(INT16)(INT8)(opcode & 0xff), EA_UINT8, EA_VALUE);
sprintf(buffer, "MOV #%s,%s", sym, regname[Rn]);
}
static void op0000(char *buffer, UINT32 pc, UINT16 opcode)
{
const char *sym;
switch(opcode & 0x3f)
{
case 0x02:
sprintf(buffer,"STC SR,%s", regname[Rn]);
break;
case 0x03:
sym = set_ea_info(0, activecpu_get_reg(SH2_R0 + Rn), EA_UINT32, EA_ABS_PC);
sprintf(buffer,"BSRF %s", regname[Rn]);
break;
case 0x08:
sprintf(buffer,"CLRT");
break;
case 0x09:
sprintf(buffer,"NOP");
break;
case 0x0A:
sprintf(buffer,"STS MACH,%s", regname[Rn]);
break;
case 0x0B:
sprintf(buffer,"RTS");
break;
case 0x12:
sprintf(buffer,"STS GBR,%s", regname[Rn]);
break;
case 0x18:
sprintf(buffer,"SETT");
break;
case 0x19:
sprintf(buffer,"DIV0U");
break;
case 0x1A:
sprintf(buffer,"STS MACL,%s", regname[Rn]);
break;
case 0x1B:
sprintf(buffer,"SLEEP");
break;
case 0x22:
sprintf(buffer,"STC VBR,%s", regname[Rn]);
break;
case 0x23:
sym = set_ea_info(0, activecpu_get_reg(SH2_R0 + Rn), EA_UINT32, EA_ABS_PC);
sprintf(buffer,"BRAF %s", regname[Rn]);
break;
case 0x28:
sprintf(buffer,"CLRMAC");
break;
case 0x29:
sprintf(buffer,"MOVT %s", regname[Rn]);
break;
case 0x2A:
sprintf(buffer,"STS PR,%s", regname[Rn]);
break;
case 0x2B:
sprintf(buffer,"RTE");
break;
default:
switch(opcode & 15)
{
case 0:
sym = set_ea_info(0, opcode, EA_UINT16, EA_VALUE);
sprintf(buffer, "?????? %s", sym);
break;
case 1:
sym = set_ea_info(0, opcode, EA_UINT16, EA_VALUE);
sprintf(buffer, "?????? %s", sym);
break;
case 2:
sym = set_ea_info(0, opcode, EA_UINT16, EA_VALUE);
sprintf(buffer, "?????? %s", sym);
break;
case 3:
sym = set_ea_info(0, opcode, EA_UINT16, EA_VALUE);
sprintf(buffer, "?????? %s", sym);
break;
case 4:
sym = set_ea_info(0, activecpu_get_reg(SH2_R0) + activecpu_get_reg(SH2_R0+Rn), EA_UINT8, EA_MEM_RD);
sprintf(buffer, "MOV.B %s,@(R0,%s)", regname[Rm], regname[Rn]);
break;
case 5:
sym = set_ea_info(0, activecpu_get_reg(SH2_R0) + activecpu_get_reg(SH2_R0+Rn), EA_UINT16, EA_MEM_RD);
sprintf(buffer, "MOV.W %s,@(R0,%s)", regname[Rm], regname[Rn]);
break;
case 6:
sym = set_ea_info(0, activecpu_get_reg(SH2_R0) + activecpu_get_reg(SH2_R0+Rn), EA_UINT32, EA_MEM_RD);
sprintf(buffer, "MOV.L %s,@(R0,%s)", regname[Rm], regname[Rn]);
break;
case 7:
sprintf(buffer, "MUL.L %s,%s\n", regname[Rm], regname[Rn]);
break;
case 8:
sym = set_ea_info(0, opcode, EA_UINT16, EA_VALUE);
sprintf(buffer, "?????? %s", sym);
break;
case 9:
sym = set_ea_info(0, opcode, EA_UINT16, EA_VALUE);
sprintf(buffer, "?????? %s", sym);
break;
case 10:
sym = set_ea_info(0, opcode, EA_UINT16, EA_VALUE);
sprintf(buffer, "?????? %s", sym);
break;
case 11:
sym = set_ea_info(0, opcode, EA_UINT16, EA_VALUE);
sprintf(buffer, "?????? %s", sym);
break;
case 12:
sym = set_ea_info(0, activecpu_get_reg(SH2_R0) + activecpu_get_reg(SH2_R0+Rm), EA_UINT8, EA_MEM_WR);
sprintf(buffer, "MOV.B @(R0,%s),%s", regname[Rm], regname[Rn]);
break;
case 13:
sym = set_ea_info(0, activecpu_get_reg(SH2_R0) + activecpu_get_reg(SH2_R0+Rm), EA_UINT16, EA_MEM_WR);
sprintf(buffer, "MOV.W @(R0,%s),%s", regname[Rm], regname[Rn]);
break;
case 14:
sym = set_ea_info(0, activecpu_get_reg(SH2_R0) + activecpu_get_reg(SH2_R0+Rm), EA_UINT32, EA_MEM_WR);
sprintf(buffer, "MOV.L @(R0,%s),%s", regname[Rm], regname[Rn]);
break;
case 15:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rn), EA_UINT32, EA_MEM_RD);
set_ea_info(1, activecpu_get_reg(SH2_R0+Rm), EA_UINT32, EA_MEM_RD);
sprintf(buffer, "MAC.L @%s+,@%s+", regname[Rn], regname[Rm]);
break;
}
}
}
/****************************************************************************
* Disassemble opcode at PC and return number of bytes it takes
****************************************************************************/
unsigned z80_dasm(char *buffer, offs_t pc, UINT8 *oprom, UINT8 *opram, int bytes)
{
const z80dasm *d;
const char *symbol, *src;
const char *ixy;
char *dst;
INT8 offset = 0;
UINT8 op, op1;
UINT16 ea = 0, xy = 0;
int pos = 0;
ixy = "oops!!";
dst = buffer;
symbol = NULL;
op = oprom[pos++];
op1 = 0; /* keep GCC happy */
switch (op)
{
case 0xcb:
op = oprom[pos++];
d = &mnemonic_cb[op];
break;
case 0xed:
op1 = oprom[pos++];
d = &mnemonic_ed[op1];
break;
case 0xdd:
ixy = "ix";
op1 = oprom[pos++];
if( op1 == 0xcb )
{
offset = (INT8) opram[pos++];
op1 = opram[pos++]; /* fourth byte from opcode_arg_base! */
xy = z80_get_reg( Z80_IX );
ea = (xy + offset) & 0xffff;
d = &mnemonic_xx_cb[op1];
}
else d = &mnemonic_xx[op1];
break;
case 0xfd:
ixy = "iy";
op1 = oprom[pos++];
if( op1 == 0xcb )
{
offset = (INT8) opram[pos++];
op1 = opram[pos++]; /* fourth byte from opcode_arg_base! */
xy = z80_get_reg( Z80_IY );
ea = (ea + offset) & 0xffff;
d = &mnemonic_xx_cb[op1];
}
else d = &mnemonic_xx[op1];
break;
default:
d = &mnemonic_main[op];
break;
}
if( d->arguments )
{
dst += sprintf(dst, "%-4s ", s_mnemonic[d->mnemonic]);
src = d->arguments;
while( *src )
{
switch( *src )
{
case '?': /* illegal opcode */
dst += sprintf( dst, "$%02x,$%02x", op, op1);
break;
case 'A':
ea = opram[pos+0] + ( opram[pos+1] << 8);
pos += 2;
symbol = set_ea_info(0, ea, EA_UINT16, d->access);
dst += sprintf( dst, "%s", symbol );
break;
case 'B': /* Byte op arg */
ea = opram[pos++];
symbol = set_ea_info(1, ea, EA_UINT8, EA_VALUE);
dst += sprintf( dst, "%s", symbol );
break;
case '(': /* Memory byte at (HL) */
*dst++ = *src;
if( !strncmp( src, "(bc)", 4) )
{
ea = z80_get_reg( Z80_BC );
set_ea_info(0, ea, EA_UINT8, d->access);
}
else
if( !strncmp( src, "(de)", 4) )
{
ea = z80_get_reg( Z80_DE );
set_ea_info(0, ea, EA_UINT8, d->access);
}
else
if( !strncmp( src, "(hl)", 4) )
{
ea = z80_get_reg( Z80_HL );
if( d->access == EA_ABS_PC )
set_ea_info(0, ea, EA_DEFAULT, EA_ABS_PC);
else
set_ea_info(0, ea, EA_UINT8, d->access);
}
else
if( !strncmp( src, "(sp)", 4) )
{
ea = z80_get_reg( Z80_SP );
set_ea_info(0, ea, EA_UINT16, d->access);
}
else
if( !strncmp( src, "(P)", 3) )
{
ea = (z80_get_reg( Z80_AF ) & 0xff00) | opram[pos];
set_ea_info(0, ea, EA_UINT16, d->access);
}
else
if( !strncmp( src, "(c)", 3) )
{
ea = z80_get_reg( Z80_BC );
set_ea_info(0, ea, EA_UINT16, d->access);
}
else
if( !strncmp( src, "(I)", 3) )
{
ea = xy;
set_ea_info(0, ea, EA_DEFAULT, d->access);
}
break;
case 'N': /* Immediate 16 bit */
ea = opram[pos+0] + ( opram[pos+1] << 8 );
pos += 2;
symbol = set_ea_info(1, ea, EA_UINT16, EA_VALUE );
dst += sprintf( dst, "%s", symbol );
break;
case 'O': /* Offset relative to PC */
offset = (INT8) opram[pos++];
symbol = set_ea_info(0, pc, offset + 2, d->access);
dst += sprintf( dst, "%s", symbol );
break;
case 'P': /* Port number */
ea = opram[pos++];
dst += sprintf( dst, "$%02X", ea );
break;
case 'V': /* Restart vector */
ea = op & 0x38;
symbol = set_ea_info(0, ea, EA_UINT8, d->access);
dst += sprintf( dst, "%s", symbol );
break;
case 'W': /* Memory address word */
ea = opram[pos+0] + ( opram[pos+1] << 8);
pos += 2;
symbol = set_ea_info(0, ea, EA_UINT16, d->access);
dst += sprintf( dst, "%s", symbol );
break;
case 'X':
offset = (INT8) opram[pos++];
ea = (xy + offset) & 0xffff;
case 'Y':
symbol = set_ea_info(0, ea, EA_UINT8, d->access);
dst += sprintf( dst,"(%s%c$%02x)", ixy, sign(offset), offs(offset) );
break;
case 'I':
dst += sprintf( dst, "%s", ixy);
break;
default:
*dst++ = *src;
}
src++;
}
*dst = '\0';
}
else
{
dst += sprintf(dst, "%s", s_mnemonic[d->mnemonic]);
}
return pos | s_flags[d->mnemonic] | DASMFLAG_SUPPORTED;
}
unsigned Dasm680x (int subtype, char *buf, unsigned pc)
{
int invalid_mask;
int code = cpu_readop(pc);
const char *symbol, *symbol2;
UINT8 opcode, args, access, size, invalid;
switch( subtype )
{
case 6800: case 6802: case 6808:
invalid_mask = 1;
break;
case 6801: case 6803:
invalid_mask = 2;
break;
default:
invalid_mask = 4;
}
opcode = table[code][0];
args = table[code][1];
access = table[code][2];
size = table[code][3];
invalid = table[code][4];
if ( invalid & invalid_mask ) /* invalid for this cpu type ? */
{
strcpy(buf, "illegal");
return 1;
}
buf += sprintf(buf, "%-5s", op_name_str[opcode]);
switch( args )
{
case rel: /* relative */
symbol = set_ea_info( 0, pc, (INT8)ARG1 + 2, access );
sprintf (buf, "%s", symbol);
return 2;
case imm: /* immediate (byte or word) */
if( size == B )
{
symbol = set_ea_info( 0, ARG1, EA_UINT8, EA_VALUE );
sprintf (buf, "#%s", symbol);
return 2;
}
symbol = set_ea_info( 0, ARGW, EA_UINT16, EA_VALUE );
sprintf (buf, "#%s", symbol);
return 3;
case idx: /* indexed + byte offset */
symbol = set_ea_info( 1, ARG1, EA_UINT8, EA_VALUE );
symbol2 = set_ea_info( 0, (m6800_get_reg(M6800_X) + ARG1), size, access);
sprintf (buf, "(x+%s)", symbol );
return 2;
case imx: /* immediate, indexed + byte offset */
symbol = set_ea_info( 1, ARG1, EA_UINT8, EA_VALUE);
symbol2 = set_ea_info( 0, (m6800_get_reg(M6800_X) + ARG2), size, access);
sprintf (buf, "#%s,(x+$%02x)", symbol, ARG2 );
return 3;
case dir: /* direct address */
symbol = set_ea_info( 1, ARG1, size, access);
sprintf (buf, "%s", symbol );
return 2;
case imd: /* immediate, direct address */
symbol = set_ea_info( 1, ARG1, EA_UINT8, EA_VALUE );
symbol2 = set_ea_info( 0, ARG2, size, access);
sprintf (buf, "#%s,%s", symbol, symbol2);
return 3;
case ext: /* extended address */
symbol = set_ea_info( 0, ARGW, size, access);
sprintf (buf, "%s", symbol);
return 3;
case sx1: /* byte from address (s + 1) */
symbol = set_ea_info( 0, m6800_get_reg(M6800_S) + 1, EA_UINT8, access);
sprintf (buf, "(s+1)");
return 1;
default:
return 1;
}
}
/****************************************************************************
* Disassemble opcode at PC and return number of bytes it takes
****************************************************************************/
unsigned DasmZ80( char *buffer, unsigned pc )
{
z80dasm *d;
const char *symbol, *src;
const char *ixy;
char *dst;
unsigned PC = pc;
INT8 offset = 0;
UINT8 op, op1;
UINT16 ea = 0, xy = 0;
ixy = "oops!!";
dst = buffer;
symbol = NULL;
op = cpu_readop( pc++ );
op1 = 0; /* keep GCC happy */
switch (op)
{
case 0xcb:
op = cpu_readop(pc++);
d = &mnemonic_cb[op];
break;
case 0xed:
op1 = cpu_readop(pc++);
d = &mnemonic_ed[op1];
break;
case 0xdd:
ixy = "ix";
op1 = cpu_readop(pc++);
if( op1 == 0xcb )
{
offset = (INT8) cpu_readop_arg(pc++);
op1 = cpu_readop_arg(pc++); /* fourth byte from OP_RAM! */
xy = z80_get_reg( Z80_IX );
ea = (xy + offset) & 0xffff;
d = &mnemonic_xx_cb[op1];
}
else d = &mnemonic_xx[op1];
break;
case 0xfd:
ixy = "iy";
op1 = cpu_readop(pc++);
if( op1 == 0xcb )
{
offset = (INT8) cpu_readop_arg(pc++);
op1 = cpu_readop_arg(pc++); /* fourth byte from OP_RAM! */
xy = z80_get_reg( Z80_IY );
ea = (ea + offset) & 0xffff;
d = &mnemonic_xx_cb[op1];
}
else d = &mnemonic_xx[op1];
break;
default:
d = &mnemonic_main[op];
break;
}
if( d->arguments )
{
dst += sprintf(dst, "%-4s ", s_mnemonic[d->mnemonic]);
src = d->arguments;
while( *src )
{
switch( *src )
{
case '?': /* illegal opcode */
dst += sprintf( dst, "$%02x,$%02x", op, op1);
break;
case 'A':
ea = cpu_readop_arg(pc) + ( cpu_readop_arg((pc+1)&0xffff) << 8);
pc += 2;
symbol = set_ea_info(0, ea, EA_UINT16, d->access);
dst += sprintf( dst, "%s", symbol );
break;
case 'B': /* Byte op arg */
ea = cpu_readop_arg( pc++ );
symbol = set_ea_info(1, ea, EA_UINT8, EA_VALUE);
dst += sprintf( dst, "%s", symbol );
break;
case '(': /* Memory byte at (HL) */
*dst++ = *src;
if( !strncmp( src, "(bc)", 4) )
{
ea = z80_get_reg( Z80_BC );
set_ea_info(0, ea, EA_UINT8, d->access);
}
else
if( !strncmp( src, "(de)", 4) )
{
ea = z80_get_reg( Z80_DE );
set_ea_info(0, ea, EA_UINT8, d->access);
}
else
if( !strncmp( src, "(hl)", 4) )
{
ea = z80_get_reg( Z80_HL );
if( d->access == EA_ABS_PC )
set_ea_info(0, ea, EA_DEFAULT, EA_ABS_PC);
else
set_ea_info(0, ea, EA_UINT8, d->access);
}
else
if( !strncmp( src, "(sp)", 4) )
{
ea = z80_get_reg( Z80_SP );
set_ea_info(0, ea, EA_UINT16, d->access);
}
else
if( !strncmp( src, "(P)", 3) )
{
ea = (z80_get_reg( Z80_AF ) & 0xff00) | cpu_readop_arg( pc );
set_ea_info(0, ea, EA_UINT16, d->access);
}
else
if( !strncmp( src, "(c)", 3) )
{
ea = z80_get_reg( Z80_BC );
set_ea_info(0, ea, EA_UINT16, d->access);
}
else
if( !strncmp( src, "(I)", 3) )
{
ea = xy;
set_ea_info(0, ea, EA_DEFAULT, d->access);
}
break;
case 'N': /* Immediate 16 bit */
ea = cpu_readop_arg(pc) + ( cpu_readop_arg((pc+1)&0xffff) << 8 );
pc += 2;
symbol = set_ea_info(1, ea, EA_UINT16, EA_VALUE );
dst += sprintf( dst, "%s", symbol );
break;
case 'O': /* Offset relative to PC */
offset = (INT8) cpu_readop_arg(pc++);
symbol = set_ea_info(0, PC, offset + 2, d->access);
dst += sprintf( dst, "%s", symbol );
break;
case 'P': /* Port number */
ea = cpu_readop_arg( pc++ );
dst += sprintf( dst, "$%02X", ea );
break;
case 'V': /* Restart vector */
ea = op & 0x38;
symbol = set_ea_info(0, ea, EA_UINT8, d->access);
dst += sprintf( dst, "%s", symbol );
break;
case 'W': /* Memory address word */
ea = cpu_readop_arg(pc) + ( cpu_readop_arg((pc+1)&0xffff) << 8);
pc += 2;
symbol = set_ea_info(0, ea, EA_UINT16, d->access);
dst += sprintf( dst, "%s", symbol );
break;
case 'X':
offset = (INT8) cpu_readop_arg(pc++);
ea = (xy + offset) & 0xffff;
case 'Y':
symbol = set_ea_info(0, ea, EA_UINT8, d->access);
dst += sprintf( dst,"(%s%c$%02x)", ixy, sign(offset), offs(offset) );
break;
case 'I':
dst += sprintf( dst, "%s", ixy);
break;
default:
*dst++ = *src;
}
src++;
}
*dst = '\0';
}
else
{
dst += sprintf(dst, "%s", s_mnemonic[d->mnemonic]);
}
return pc - PC;
}
/*****************************************************************************
* Disassemble a single opcode starting at pc
*****************************************************************************/
static unsigned internal_m6502_dasm(const struct op6502_info *opinfo, char *buffer, offs_t pc, UINT8 *oprom, UINT8 *opram, int bytes)
{
char *dst = buffer;
const char *symbol;
INT8 offset;
INT16 offset16;
unsigned PC = pc;
UINT16 addr;
UINT8 op, opc, arg, access, value;
UINT32 flags;
int pos = 0;
op = oprom[pos++];
pc++;
opc = opinfo[op].opc;
arg = opinfo[op].arg;
access = opinfo[op].access;
/* determine dasmflags */
switch(opc)
{
case jsr:
case bsr:
flags = DASMFLAG_SUPPORTED | DASMFLAG_STEP_OVER;
break;
case rts:
case rti:
case rtn:
flags = DASMFLAG_SUPPORTED | DASMFLAG_STEP_OUT;
break;
default:
flags = DASMFLAG_SUPPORTED;
break;
}
dst += sprintf(dst, "%-5s", token[opc]);
if( opc == bbr || opc == bbs || opc == rmb || opc == smb )
dst += sprintf(dst, "%d,", (op >> 3) & 7);
switch(arg)
{
case imp:
break;
case acc:
dst += sprintf(dst,"a");
break;
case rel:
offset = (INT8) opram[pos++];
pc++;
dst += sprintf(dst, "$%04X", (pc + offset) & 0xFFFF);
break;
case rw2:
offset16 = (opram[pos] | (opram[pos+1] << 8)) -1;
pos += 2;
pc += 2;
dst += sprintf(dst, "$%04X", (pc + offset16) & 0xFFFF);
break;
case imm:
value = opram[pos++];
pc++;
symbol = set_ea_info( 0, value, EA_UINT8, access );
dst += sprintf(dst,"#%s", symbol);
break;
case zpg:
addr = opram[pos++];
pc++;
symbol = set_ea_info( 0, addr, EA_UINT8, access );
dst += sprintf(dst,"$%02X", addr);
break;
case zpx:
addr = opram[pos++];
pc++;
dst += sprintf(dst,"$%02X,x", addr);
break;
case zpy:
addr = opram[pos++];
pc++;
dst += sprintf(dst,"$%02X,y", addr);
break;
case idx:
addr = opram[pos++];
pc++;
dst += sprintf(dst,"($%02X,x)", addr);
break;
case idy:
addr = opram[pos++];
pc++;
dst += sprintf(dst,"($%02X),y", addr);
break;
case zpi:
addr = opram[pos++];
pc++;
dst += sprintf(dst,"($%02X)", addr);
break;
case zpb:
addr = opram[pos++];
pc++;
symbol = set_ea_info( 0, addr, EA_UINT8, access );
dst += sprintf(dst,"$%02X", addr);
offset = (INT8) opram[pos++];
pc++;
symbol = set_ea_info( 1, pc, offset, BRA );
dst += sprintf(dst,",%s", symbol);
break;
case adr:
addr = (opram[pos] | (opram[pos+1] << 8));
pos += 2;
pc += 2;
dst += sprintf(dst, "$%04X", addr);
break;
case aba:
addr = (opram[pos] | (opram[pos+1] << 8));
pos += 2;
pc += 2;
dst += sprintf(dst, "$%04X", addr);
break;
case abx:
addr = (opram[pos] | (opram[pos+1] << 8));
pos += 2;
pc += 2;
dst += sprintf(dst,"$%04X,x", addr);
break;
case aby:
addr = (opram[pos] | (opram[pos+1] << 8));
pos += 2;
pc += 2;
dst += sprintf(dst,"$%04X,y", addr);
break;
case ind:
addr = (opram[pos] | (opram[pos+1] << 8));
pos += 2;
pc += 2;
dst += sprintf(dst,"($%04X)", addr);
break;
case iax:
addr = (opram[pos] | (opram[pos+1] << 8));
pos += 2;
pc += 2;
pos += 2;
pc += 2;
dst += sprintf(dst,"($%04X),X", addr);
break;
case iw2:
addr = (opram[pos] | (opram[pos+1] << 8));
pos += 2;
pc += 2;
dst += sprintf(dst,"#%04X", addr);
break;
case iw3:
addr = (opram[pos] | (opram[pos+1] << 8) | (opram[pos+2] << 16));
pos += 3;
pc += 3;
dst += sprintf(dst,"#%06x", addr);
break;
case idz:
addr = (INT8) opram[pos++];
pc++;
dst += sprintf(dst,"($%02X),z", addr);
break;
case isy:
op = opram[pos++];
pc++;
addr = op + m6502_get_reg(opinfo, M6502_S);
pos += 2;
pc += 2;
dst += sprintf(dst,"(s,$%02X),y", addr);
break;
default:
dst += sprintf(dst,"$%02X", op);
break;
}
return (pc - PC) | flags;
}
static void op1111(char *buffer, UINT32 pc, UINT16 opcode)
{
const char *sym;
sym = set_ea_info(0, opcode, EA_UINT16, EA_VALUE);
sprintf(buffer, "unknown %s", sym);
}
static void op0110(char *buffer, UINT32 pc, UINT16 opcode)
{
switch(opcode & 0xF)
{
case 0x00:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rm), EA_UINT8, EA_MEM_RD);
sprintf(buffer, "MOV.B @%s,%s", regname[Rm], regname[Rn]);
break;
case 0x01:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rm), EA_UINT16, EA_MEM_RD);
sprintf(buffer, "MOV.W @%s,%s", regname[Rm], regname[Rn]);
break;
case 0x02:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rm), EA_UINT32, EA_MEM_RD);
sprintf(buffer, "MOV.L @%s,%s", regname[Rm], regname[Rn]);
break;
case 0x03:
sprintf(buffer, "MOV %s,%s", regname[Rm], regname[Rn]);
break;
case 0x04:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rm), EA_UINT8, EA_MEM_RD);
sprintf(buffer, "MOV.B @%s+,%s", regname[Rm], regname[Rn]);
break;
case 0x05:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rm), EA_UINT16, EA_MEM_RD);
sprintf(buffer, "MOV.W @%s+,%s", regname[Rm], regname[Rn]);
break;
case 0x06:
set_ea_info(0, activecpu_get_reg(SH2_R0+Rm), EA_UINT32, EA_MEM_RD);
sprintf(buffer, "MOV.L @%s+,%s", regname[Rm], regname[Rn]);
break;
case 0x07:
sprintf(buffer, "NOT %s,%s", regname[Rm], regname[Rn]);
break;
case 0x08:
sprintf(buffer, "SWAP.B %s,%s", regname[Rm], regname[Rn]);
break;
case 0x09:
sprintf(buffer, "SWAP.W %s,%s", regname[Rm], regname[Rn]);
break;
case 0x0a:
sprintf(buffer, "NEGC %s,%s", regname[Rm], regname[Rn]);
break;
case 0x0b:
sprintf(buffer, "NEG %s,%s", regname[Rm], regname[Rn]);
break;
case 0x0c:
sprintf(buffer, "EXTU.B %s,%s", regname[Rm], regname[Rn]);
break;
case 0x0d:
sprintf(buffer, "EXTU.W %s,%s", regname[Rm], regname[Rn]);
break;
case 0x0e:
sprintf(buffer, "EXTS.B %s,%s", regname[Rm], regname[Rn]);
break;
case 0x0f:
sprintf(buffer, "EXTS.W %s,%s", regname[Rm], regname[Rn]);
break;
}
}
unsigned DasmF8(char *buffer, unsigned pc)
{
UINT8 op = cpu_readop(pc);
UINT16 ea;
unsigned size = 1;
const char *sym, *sym2;
switch( op )
{
/* opcode bitmask */
case 0x00: /* 0000 0000 */
sym = set_ea_info( 0, 12, EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "LR A,KU");
break;
case 0x01: /* 0000 0001 */
sym = set_ea_info( 0, 13, EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "LR A,KL");
break;
case 0x02: /* 0000 0010 */
sym = set_ea_info( 0, 14, EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "LR A,QU");
break;
case 0x03: /* 0000 0011 */
sym = set_ea_info( 0, 15, EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "LR A,QL");
break;
case 0x04: /* 0000 0100 */
sym = set_ea_info( 0, 12, EA_UINT8, EA_ZPG_WR );
sprintf(buffer, "LR KU,A");
break;
case 0x05: /* 0000 0101 */
sym = set_ea_info( 0, 13, EA_UINT8, EA_ZPG_WR );
sprintf(buffer, "LR KL,A");
break;
case 0x06: /* 0000 0110 */
sym = set_ea_info( 0, 14, EA_UINT8, EA_ZPG_WR );
sprintf(buffer, "LR QU,A");
break;
case 0x07: /* 0000 0111 */
sym = set_ea_info( 0, 15, EA_UINT8, EA_ZPG_WR );
sprintf(buffer, "LR QL,A");
break;
case 0x08: /* 0000 1000 */
sym = set_ea_info( 0, 12, EA_UINT16, EA_ZPG_WR );
sprintf(buffer, "LR K,P");
break;
case 0x09: /* 0000 1001 */
sym = set_ea_info( 0, 12, EA_UINT16, EA_ZPG_RD );
sprintf(buffer, "LR P,K");
break;
case 0x0a: /* 0000 1010 */
sprintf(buffer, "LR A,IS");
break;
case 0x0b: /* 0000 1011 */
sprintf(buffer, "LR IS,A");
break;
case 0x0c: /* 0000 1100 */
sprintf(buffer, "PK") ;
break;
case 0x0d: /* 0000 1101 */
sprintf(buffer, "LR P0,Q");
sym = set_ea_info( 0, 14, EA_UINT16, EA_ZPG_RD );
break;
case 0x0e: /* 0000 1110 */
sym = set_ea_info( 0, 14, EA_UINT16, EA_ZPG_WR );
sprintf(buffer, "LR Q,DC");
break;
case 0x0f: /* 0000 1111 */
sym = set_ea_info( 0, 14, EA_UINT16, EA_ZPG_RD );
sprintf(buffer, "LR DC,Q");
break;
case 0x10: /* 0001 0000 */
sym = set_ea_info( 0, 10, EA_UINT16, EA_ZPG_RD );
sprintf(buffer, "LR DC,H");
break;
case 0x11: /* 0001 0001 */
sym = set_ea_info( 0, 10, EA_UINT16, EA_ZPG_WR );
sprintf(buffer, "LR H,DC");
break;
case 0x12: /* 0001 0010 */
sprintf(buffer, "SR 1");
break;
case 0x13: /* 0001 0011 */
sprintf(buffer, "SL 1");
break;
case 0x14: /* 0001 0100 */
sprintf(buffer, "SR 4");
break;
case 0x15: /* 0001 0101 */
sprintf(buffer, "SL 4");
break;
case 0x16: /* 0001 0110 */
sym = set_ea_info( 0, activecpu_get_reg(F8_DC0), EA_UINT8, EA_MEM_RD );
sprintf(buffer, "LM") ;
break;
case 0x17: /* 0001 0111 */
sym = set_ea_info( 0, activecpu_get_reg(F8_DC0), EA_UINT8, EA_MEM_WR );
sprintf(buffer, "ST");
break;
case 0x18: /* 0001 1000 */
sprintf(buffer, "COM");
break;
case 0x19: /* 0001 1001 */
sprintf(buffer, "LNK");
break;
case 0x1a: /* 0001 1010 */
sprintf(buffer, "DI");
break;
case 0x1b: /* 0001 1011 */
sprintf(buffer, "EI");
break;
case 0x1c: /* 0001 1100 */
sym = set_ea_info( 0, activecpu_get_reg(F8_PC1), EA_UINT16, EA_ABS_PC );
sprintf(buffer, "POP");
break;
case 0x1d: /* 0001 1101 */
sym = set_ea_info( 0, 9, EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "LR W,J");
break;
case 0x1e: /* 0001 1110 */
sym = set_ea_info( 0, 9, EA_UINT8, EA_ZPG_WR );
sprintf(buffer, "LR J,W");
break;
case 0x1f: /* 0001 1111 */
sprintf(buffer, "INC");
break;
case 0x20: /* 0010 0000 */
size += 1;
sym = set_ea_info( 0, cpu_readop_arg(pc+1), EA_UINT8, EA_VALUE );
sprintf(buffer, "LI %s",sym);
break;
case 0x21: /* 0010 0001 */
size += 1;
sym = set_ea_info( 0, cpu_readop_arg(pc+1), EA_UINT8, EA_VALUE );
sprintf(buffer, "NI %s",sym);
break;
case 0x22: /* 0010 0010 */
size += 1;
sym = set_ea_info( 0, cpu_readop_arg(pc+1), EA_UINT8, EA_VALUE );
sprintf(buffer, "OI %s",sym);
break;
case 0x23: /* 0010 0011 */
size += 1;
sym = set_ea_info( 0, cpu_readop_arg(pc+1), EA_UINT8, EA_VALUE );
sprintf(buffer, "XI %s",sym);
break;
case 0x24: /* 0010 0100 */
size += 1;
sym = set_ea_info( 0, cpu_readop_arg(pc+1), EA_UINT8, EA_VALUE );
sprintf(buffer, "AI %s",sym);
break;
case 0x25: /* 0010 0101 */
size += 1;
sym = set_ea_info( 0, cpu_readop_arg(pc+1), EA_UINT8, EA_VALUE );
sprintf(buffer, "CI %s",sym);
break;
case 0x26: /* 0010 0110 */
size += 1;
sym = set_ea_info( 0, cpu_readop_arg(pc+1), EA_UINT8, EA_PORT_RD );
sprintf(buffer, "IN %s",sym);
break;
case 0x27: /* 0010 0111 */
size += 1;
sym = set_ea_info( 0, cpu_readop_arg(pc+1), EA_UINT8, EA_PORT_WR );
sprintf(buffer, "OUT %s",sym);
break;
case 0x28: /* 0010 1000 */
size += 2;
ea = cpu_readop_arg(pc+1) << 8;
ea |= cpu_readop_arg(pc+2);
sym = set_ea_info( 0, ea, EA_UINT16, EA_ABS_PC );
sprintf(buffer, "PI %s",sym);
break;
case 0x29: /* 0010 1001 */
size += 2;
ea = cpu_readop_arg(pc+1) << 8;
ea |= cpu_readop_arg(pc+2);
sym = set_ea_info( 0, ea, EA_UINT16, EA_ABS_PC );
sprintf(buffer, "JMP %s",sym);
break;
case 0x2a: /* 0010 1010 */
size += 2;
ea = cpu_readop_arg(pc+1) << 8;
ea |= cpu_readop_arg(pc+2);
sym = set_ea_info( 0, ea, EA_UINT16, EA_VALUE );
sprintf(buffer, "DCI %s",sym);
break;
case 0x2b: /* 0010 1011 */
sprintf(buffer, "NOP");
break;
case 0x2c: /* 0010 1100 */
sprintf(buffer, "XDC");
break;
case 0x2d: /* 0010 1101 */
case 0x2e: /* 0010 1110 */
case 0x2f: /* 0010 1111 */
sprintf(buffer, "??? $%02X",op);
break;
case 0x30: /* 0011 0000 */
case 0x31: /* 0011 0001 */
case 0x32: /* 0011 0010 */
case 0x33: /* 0011 0011 */
case 0x34: /* 0011 0100 */
case 0x35: /* 0011 0101 */
case 0x36: /* 0011 0110 */
case 0x37: /* 0011 0111 */
case 0x38: /* 0011 1000 */
case 0x39: /* 0011 1001 */
case 0x3a: /* 0011 1010 */
case 0x3b: /* 0011 1011 */
sym = set_ea_info( 0, op & 15, EA_UINT8, EA_ZPG_RDWR );
sprintf(buffer, "DS %s",rname[op & 15]);
break;
case 0x3c: /* 0011 1100 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_RDWR );
sprintf(buffer, "DS (IS)");
break;
case 0x3d: /* 0011 1101 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_RDWR );
sprintf(buffer, "DS (IS++)");
break;
case 0x3e: /* 0011 1110 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_RDWR );
sprintf(buffer, "DS (IS--)");
break;
case 0x3f: /* 0011 1111 */
sprintf(buffer, "??? $%02X",op);
break;
case 0x40: /* 0100 0000 */
case 0x41: /* 0100 0001 */
case 0x42: /* 0100 0010 */
case 0x43: /* 0100 0011 */
case 0x44: /* 0100 0100 */
case 0x45: /* 0100 0101 */
case 0x46: /* 0100 0110 */
case 0x47: /* 0100 0111 */
case 0x48: /* 0100 1000 */
case 0x49: /* 0100 1001 */
case 0x4a: /* 0100 1010 */
case 0x4b: /* 0100 1011 */
sym = set_ea_info( 0, op & 15, EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "LR A,%s",rname[op & 15]);
break;
case 0x4c: /* 0100 1100 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "LR A,(IS)");
break;
case 0x4d: /* 0100 1101 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "LR A,(IS++)");
break;
case 0x4e: /* 0100 1110 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "LR A,(IS--)");
break;
case 0x4f: /* 0100 1111 */
sprintf(buffer, "??? $%02X",op);
break;
case 0x50: /* 0101 0000 */
case 0x51: /* 0101 0001 */
case 0x52: /* 0101 0010 */
case 0x53: /* 0101 0011 */
case 0x54: /* 0101 0100 */
case 0x55: /* 0101 0101 */
case 0x56: /* 0101 0110 */
case 0x57: /* 0101 0111 */
case 0x58: /* 0101 1000 */
case 0x59: /* 0101 1001 */
case 0x5a: /* 0101 1010 */
case 0x5b: /* 0101 1011 */
sym = set_ea_info( 0, op & 15, EA_UINT8, EA_ZPG_WR );
sprintf(buffer, "LR %s,A",rname[op & 15]);
break;
case 0x5c: /* 0101 1100 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_WR );
sprintf(buffer, "LR (IS),A");
break;
case 0x5d: /* 0101 1101 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_WR );
sprintf(buffer, "LR (IS++),A");
break;
case 0x5e: /* 0101 1110 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_WR );
sprintf(buffer, "LR (IS--),A");
break;
case 0x5f: /* 0101 1111 */
sprintf(buffer, "??? $%02X",op);
break;
case 0x60: /* 0110 0000 */
case 0x61: /* 0110 0001 */
case 0x62: /* 0110 0010 */
case 0x63: /* 0110 0011 */
case 0x64: /* 0110 0100 */
case 0x65: /* 0110 0101 */
case 0x66: /* 0110 0110 */
case 0x67: /* 0110 0111 */
sym = set_ea_info( 0, op & 7, EA_UINT8, EA_VALUE );
sprintf(buffer, "LISU %s", sym);
break;
case 0x68: /* 0110 1000 */
case 0x69: /* 0110 1001 */
case 0x6a: /* 0110 1010 */
case 0x6b: /* 0110 1011 */
case 0x6c: /* 0110 1100 */
case 0x6d: /* 0110 1101 */
case 0x6e: /* 0110 1110 */
case 0x6f: /* 0110 1111 */
sym = set_ea_info( 0, op & 7, EA_UINT8, EA_VALUE );
sprintf(buffer, "LISL %s", sym);
break;
case 0x70: /* 0111 0000 */
case 0x71: /* 0111 0001 */
case 0x72: /* 0111 0010 */
case 0x73: /* 0111 0011 */
case 0x74: /* 0111 0100 */
case 0x75: /* 0111 0101 */
case 0x76: /* 0111 0110 */
case 0x77: /* 0111 0111 */
case 0x78: /* 0111 1000 */
case 0x79: /* 0111 1001 */
case 0x7a: /* 0111 1010 */
case 0x7b: /* 0111 1011 */
case 0x7c: /* 0111 1100 */
case 0x7d: /* 0111 1101 */
case 0x7e: /* 0111 1110 */
case 0x7f: /* 0111 1111 */
sym = set_ea_info( 0, op & 15, EA_UINT8, EA_VALUE );
sprintf(buffer, "LIS %s", sym);
break;
case 0x80: /* 1000 0000 */
case 0x81: /* 1000 0001 */
case 0x82: /* 1000 0010 */
case 0x83: /* 1000 0011 */
case 0x84: /* 1000 0100 */
case 0x85: /* 1000 0101 */
case 0x86: /* 1000 0110 */
case 0x87: /* 1000 0111 */
size += 1;
sym = set_ea_info( 0, op & 7, EA_UINT8, EA_VALUE );
ea = pc + (INT32)(INT16)(INT8)cpu_readop_arg(pc+1) - 3;
sym2 = set_ea_info( 1, ea, EA_UINT16, EA_REL_PC );
sprintf(buffer, "BT %s,%s", sym, sym2);
break;
case 0x88: /* 1000 1000 */
sprintf(buffer, "AM");
break;
case 0x89: /* 1000 1001 */
sprintf(buffer, "AMD");
break;
case 0x8a: /* 1000 1010 */
sprintf(buffer, "NM");
break;
case 0x8b: /* 1000 1011 */
sprintf(buffer, "OM");
break;
case 0x8c: /* 1000 1100 */
sprintf(buffer, "XM");
break;
case 0x8d: /* 1000 1101 */
sprintf(buffer, "CM");
break;
case 0x8e: /* 1000 1110 */
sprintf(buffer, "ADC");
break;
case 0x8f: /* 1000 1111 */
size += 1;
ea = pc + (INT8)cpu_readop_arg(pc+1) - 3;
sym = set_ea_info( 0, ea, EA_UINT16, EA_REL_PC );
sprintf(buffer, "BR7 %s", sym);
break;
case 0x90: /* 1001 0000 */
case 0x91: /* 1001 0001 */
case 0x92: /* 1001 0010 */
case 0x93: /* 1001 0011 */
case 0x94: /* 1001 0100 */
case 0x95: /* 1001 0101 */
case 0x96: /* 1001 0110 */
case 0x97: /* 1001 0111 */
case 0x98: /* 1001 1000 */
case 0x99: /* 1001 1001 */
case 0x9a: /* 1001 1010 */
case 0x9b: /* 1001 1011 */
case 0x9c: /* 1001 1100 */
case 0x9d: /* 1001 1101 */
case 0x9e: /* 1001 1110 */
case 0x9f: /* 1001 1111 */
size += 1;
sym = set_ea_info( 0, op & 15, EA_UINT8, EA_VALUE );
ea = pc + (INT8)cpu_readop_arg(pc+1) - 3;
sym2 = set_ea_info( 1, ea, EA_UINT16, EA_REL_PC );
sprintf(buffer, "BF %s,%s", sym, sym2);
break;
case 0xa0: /* 1010 0000 */
case 0xa1: /* 1010 0001 */
sym = set_ea_info( 0, op & 15, EA_INT8, EA_PORT_RD );
sprintf(buffer, "INS %s", sym);
break;
case 0xa2: /* 1010 0010 */
case 0xa3: /* 1010 0011 */
sprintf(buffer, "??? $%02X\n", op);
break;
case 0xa4: /* 1010 0100 */
case 0xa5: /* 1010 0101 */
case 0xa6: /* 1010 0110 */
case 0xa7: /* 1010 0111 */
case 0xa8: /* 1010 1000 */
case 0xa9: /* 1010 1001 */
case 0xaa: /* 1010 1010 */
case 0xab: /* 1010 1011 */
case 0xac: /* 1010 1100 */
case 0xad: /* 1010 1101 */
case 0xae: /* 1010 1110 */
case 0xaf: /* 1010 1111 */
sym = set_ea_info( 0, op & 15, EA_INT8, EA_PORT_RD );
sprintf(buffer, "INS %s", sym);
break;
case 0xb0: /* 1011 0000 */
case 0xb1: /* 1011 0001 */
sym = set_ea_info( 0, op & 15, EA_INT8, EA_PORT_WR );
sprintf(buffer, "OUTS %s", sym);
break;
case 0xb2: /* 1011 0010 */
case 0xb3: /* 1011 0011 */
sprintf(buffer, "??? $%02X\n", op);
break;
case 0xb4: /* 1011 0100 */
case 0xb5: /* 1011 0101 */
case 0xb6: /* 1011 0110 */
case 0xb7: /* 1011 0111 */
case 0xb8: /* 1011 1000 */
case 0xb9: /* 1011 1001 */
case 0xba: /* 1011 1010 */
case 0xbb: /* 1011 1011 */
case 0xbc: /* 1011 1100 */
case 0xbd: /* 1011 1101 */
case 0xbe: /* 1011 1110 */
case 0xbf: /* 1011 1111 */
sym = set_ea_info( 0, op & 15, EA_INT8, EA_PORT_WR );
sprintf(buffer, "OUTS %s", sym);
break;
case 0xc0: /* 1100 0000 */
case 0xc1: /* 1100 0001 */
case 0xc2: /* 1100 0010 */
case 0xc3: /* 1100 0011 */
case 0xc4: /* 1100 0100 */
case 0xc5: /* 1100 0101 */
case 0xc6: /* 1100 0110 */
case 0xc7: /* 1100 0111 */
case 0xc8: /* 1100 1000 */
case 0xc9: /* 1100 1001 */
case 0xca: /* 1100 1010 */
case 0xcb: /* 1100 1011 */
sym = set_ea_info( 0, op & 15, EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "AS %s", rname[op & 15]);
break;
case 0xcc: /* 1100 1100 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "AS (IS)");
break;
case 0xcd: /* 1100 1101 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "AS (IS++)");
break;
case 0xce: /* 1100 1110 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "AS (IS--)");
break;
case 0xcf: /* 1100 1111 */
sprintf(buffer, "??? $%02X\n", op);
break;
case 0xd0: /* 1101 0000 */
case 0xd1: /* 1101 0001 */
case 0xd2: /* 1101 0010 */
case 0xd3: /* 1101 0011 */
case 0xd4: /* 1101 0100 */
case 0xd5: /* 1101 0101 */
case 0xd6: /* 1101 0110 */
case 0xd7: /* 1101 0111 */
case 0xd8: /* 1101 1000 */
case 0xd9: /* 1101 1001 */
case 0xda: /* 1101 1010 */
case 0xdb: /* 1101 1011 */
sym = set_ea_info( 0, op & 15, EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "ASD %s", rname[op & 15]);
break;
case 0xdc: /* 1101 1100 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "ASD (IS)");
break;
case 0xdd: /* 1101 1101 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "ASD (IS++)");
break;
case 0xde: /* 1101 1110 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "ASD (IS--)");
break;
case 0xdf: /* 1101 1111 */
sprintf(buffer, "??? $%02X\n", op);
break;
case 0xe0: /* 1110 0000 */
case 0xe1: /* 1110 0001 */
case 0xe2: /* 1110 0010 */
case 0xe3: /* 1110 0011 */
case 0xe4: /* 1110 0100 */
case 0xe5: /* 1110 0101 */
case 0xe6: /* 1110 0110 */
case 0xe7: /* 1110 0111 */
case 0xe8: /* 1110 1000 */
case 0xe9: /* 1110 1001 */
case 0xea: /* 1110 1010 */
case 0xeb: /* 1110 1011 */
sym = set_ea_info( 0, op & 15, EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "XS %s", rname[op & 15]);
break;
case 0xec: /* 1110 1100 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "XS (IS)");
break;
case 0xed: /* 1110 1101 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "XS (IS++)");
break;
case 0xee: /* 1110 1110 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "XS (IS--)");
break;
case 0xef: /* 1110 1111 */
sprintf(buffer, "??? $%02X\n", op);
break;
case 0xf0: /* 1111 0000 */
case 0xf1: /* 1111 0001 */
case 0xf2: /* 1111 0010 */
case 0xf3: /* 1111 0011 */
case 0xf4: /* 1111 0100 */
case 0xf5: /* 1111 0101 */
case 0xf6: /* 1111 0110 */
case 0xf7: /* 1111 0111 */
case 0xf8: /* 1111 1000 */
case 0xf9: /* 1111 1001 */
case 0xfa: /* 1111 1010 */
case 0xfb: /* 1111 1011 */
sym = set_ea_info( 0, op & 15, EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "NS %s", rname[op & 15]);
break;
case 0xfc: /* 1111 1100 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "NS (IS)");
break;
case 0xfd: /* 1111 1101 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "NS (IS++)");
break;
case 0xfe: /* 1111 1110 */
sym = set_ea_info( 0, activecpu_get_reg(F8_IS), EA_UINT8, EA_ZPG_RD );
sprintf(buffer, "NS (IS--)");
break;
case 0xff: /* 1111 1111 */
sprintf(buffer, "??? $%02X\n", op);
break;
}
return size;
}
/*****************************************************************************
* Disassemble a single opcode starting at pc
*****************************************************************************/
unsigned Dasm6502(char *buffer, unsigned pc)
{
char *dst = buffer;
const char *symbol;
INT8 offset;
INT16 offset16;
unsigned PC = pc;
UINT16 addr, ea;
UINT8 op, opc, arg, access, value;
op = OPCODE(pc++);
switch ( m6502_get_reg(M6502_SUBTYPE) )
{
#if (HAS_M65C02)
case SUBTYPE_65C02:
opc = op65c02[op][0];
arg = op65c02[op][1];
access = op65c02[op][2];
break;
#endif
#if (HAS_M65SC02)
case SUBTYPE_65SC02:
opc = op65sc02[op][0];
arg = op65sc02[op][1];
access = op65sc02[op][2];
break;
#endif
#if (HAS_M6510)
case SUBTYPE_6510:
opc = op6510[op][0];
arg = op6510[op][1];
access = op6510[op][2];
break;
#endif
#if (HAS_DECO16)
case SUBTYPE_DECO16:
opc = opdeco16[op][0];
arg = opdeco16[op][1];
access = opdeco16[op][2];
break;
#endif
default:
opc = op6502[op][0];
arg = op6502[op][1];
access = op6502[op][2];
break;
}
dst += sprintf(dst, "%-5s", token[opc]);
if( opc == bbr || opc == bbs || opc == rmb || opc == smb )
dst += sprintf(dst, "%d,", (op >> 3) & 7);
switch(arg)
{
case imp:
break;
case acc:
dst += sprintf(dst,"a");
break;
case rel:
offset = (INT8)ARGBYTE(pc++);
symbol = set_ea_info( 0, pc, offset, access );
dst += sprintf(dst,"%s", symbol);
break;
case rw2:
offset16 = ARGWORD(pc)-1;
pc += 2;
symbol = set_ea_info( 0, pc, offset16, access );
dst += sprintf(dst,"%s", symbol);
break;
case imm:
value = ARGBYTE(pc++);
symbol = set_ea_info( 0, value, EA_UINT8, access );
dst += sprintf(dst,"#%s", symbol);
break;
case zpg:
addr = ARGBYTE(pc++);
symbol = set_ea_info( 0, addr, EA_UINT8, access );
dst += sprintf(dst,"$%02X", addr);
break;
case zpx:
addr = ARGBYTE(pc++);
ea = (addr + m6502_get_reg(M6502_X)) & 0xff;
symbol = set_ea_info( 0, ea, EA_UINT8, access );
dst += sprintf(dst,"$%02X,x", addr);
break;
case zpy:
addr = ARGBYTE(pc++);
ea = (addr + m6502_get_reg(M6502_Y)) & 0xff;
symbol = set_ea_info( 0, ea, EA_UINT8, access );
dst += sprintf(dst,"$%02X,y", addr);
break;
case idx:
addr = ARGBYTE(pc++);
ea = (addr + m6502_get_reg(M6502_X)) & 0xff;
ea = RDMEM(ea) + (RDMEM((ea+1) & 0xff) << 8);
symbol = set_ea_info( 0, ea, EA_UINT16, access );
dst += sprintf(dst,"($%02X,x)", addr);
break;
case idy:
addr = ARGBYTE(pc++);
ea = (RDMEM(addr) + (RDMEM((addr+1) & 0xff) << 8) + m6502_get_reg(M6502_Y)) & 0xffff;
symbol = set_ea_info( 0, ea, EA_UINT16, access );
dst += sprintf(dst,"($%02X),y", addr);
break;
case zpi:
addr = ARGBYTE(pc++);
ea = RDMEM(addr) + (RDMEM((addr+1) & 0xff) << 8);
symbol = set_ea_info( 0, ea, EA_UINT16, access );
dst += sprintf(dst,"($%02X)", addr);
break;
case zpb:
addr = ARGBYTE(pc++);
symbol = set_ea_info( 0, addr, EA_UINT8, access );
dst += sprintf(dst,"$%02X", addr);
offset = (INT8)ARGBYTE(pc++);
symbol = set_ea_info( 1, pc, offset, BRA );
dst += sprintf(dst,",%s", symbol);
break;
case adr:
addr = ARGWORD(pc);
pc += 2;
symbol = set_ea_info( 0, addr, EA_UINT16, access );
dst += sprintf(dst,"%s", symbol);
break;
case aba:
addr = ARGWORD(pc);
pc += 2;
symbol = set_ea_info( 0, addr, EA_UINT16, access );
dst += sprintf(dst,"%s", symbol);
break;
case abx:
addr = ARGWORD(pc);
pc += 2;
ea = (addr + m6502_get_reg(M6502_X)) & 0xffff;
symbol = set_ea_info( 0, ea, EA_UINT16, access );
dst += sprintf(dst,"$%04X,x", addr);
break;
case aby:
addr = ARGWORD(pc);
pc += 2;
ea = (addr + m6502_get_reg(M6502_Y)) & 0xffff;
symbol = set_ea_info( 0, ea, EA_UINT16, access );
dst += sprintf(dst,"$%04X,y", addr);
break;
case ind:
addr = ARGWORD(pc);
pc += 2;
ea = ARGWORD(addr);
symbol = set_ea_info( 0, ea, EA_UINT16, access );
dst += sprintf(dst,"($%04X)", addr);
break;
case iax:
addr = ARGWORD(pc);
pc += 2;
ea = (ARGWORD(addr) + m6502_get_reg(M6502_X)) & 0xffff;
symbol = set_ea_info( 0, ea, EA_UINT16, access );
dst += sprintf(dst,"($%04X),X", addr);
break;
default:
dst += sprintf(dst,"$%02X", op);
}
return pc - PC;
}