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📄 opcode0.c

📁 这个是延伸mame的在wince平台下的游戏模拟器的代码
💻 C
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	ZFLG = ((LONG)(newv)) == 0;
{	int flgs = ((LONG)(src)) < 0;
	int flgo = ((LONG)(dst)) < 0;
	int flgn = ((LONG)(newv)) < 0;
	NFLG = flgn != 0;
	VFLG = (flgs != flgo) && (flgn != flgo);
	CFLG = regs.x = ((ULONG)(src)) > ((ULONG)(dst));
}}

void op_498(void) /* SUB */
{
	ULONG dstreg = opcode & 7;
	LONG src = nextilong();
	CPTR dsta = regs.a[dstreg];
	LONG dst = get_long(dsta);
	ULONG newv = ((LONG)(dst)) - ((LONG)(src));
	put_long(dsta,newv);
	ZFLG = ((LONG)(newv)) == 0;
	regs.a[dstreg] += 4;
{	int flgs = ((LONG)(src)) < 0;
	int flgo = ((LONG)(dst)) < 0;
	int flgn = ((LONG)(newv)) < 0;
	NFLG = flgn != 0;
	VFLG = (flgs != flgo) && (flgn != flgo);
	CFLG = regs.x = ((ULONG)(src)) > ((ULONG)(dst));
}}

void op_4a0(void) /* SUB */
{
	ULONG dstreg = opcode & 7;
	LONG src = nextilong();
	regs.a[dstreg] -= 4;
{	CPTR dsta = regs.a[dstreg];
	LONG dst = get_long(dsta);
	ULONG newv = ((LONG)(dst)) - ((LONG)(src));
	put_long(dsta,newv);
	ZFLG = ((LONG)(newv)) == 0;
{	int flgs = ((LONG)(src)) < 0;
	int flgo = ((LONG)(dst)) < 0;
	int flgn = ((LONG)(newv)) < 0;
	NFLG = flgn != 0;
	VFLG = (flgs != flgo) && (flgn != flgo);
	CFLG = regs.x = ((ULONG)(src)) > ((ULONG)(dst));
}}}

void op_4a8(void) /* SUB */
{
	ULONG dstreg = opcode & 7;
	LONG src = nextilong();
	CPTR dsta = regs.a[dstreg] + (LONG)(WORD)nextiword();
	LONG dst = get_long(dsta);
	ULONG newv = ((LONG)(dst)) - ((LONG)(src));
	put_long(dsta,newv);
	ZFLG = ((LONG)(newv)) == 0;
{	int flgs = ((LONG)(src)) < 0;
	int flgo = ((LONG)(dst)) < 0;
	int flgn = ((LONG)(newv)) < 0;
	NFLG = flgn != 0;
	VFLG = (flgs != flgo) && (flgn != flgo);
	CFLG = regs.x = ((ULONG)(src)) > ((ULONG)(dst));
}}

void op_4b0(void) /* SUB */
{
	ULONG dstreg = opcode & 7;
	LONG src = nextilong();
	CPTR dsta = get_disp_ea(regs.a[dstreg]);
	LONG dst = get_long(dsta);
	ULONG newv = ((LONG)(dst)) - ((LONG)(src));
	put_long(dsta,newv);
	ZFLG = ((LONG)(newv)) == 0;
{	int flgs = ((LONG)(src)) < 0;
	int flgo = ((LONG)(dst)) < 0;
	int flgn = ((LONG)(newv)) < 0;
	NFLG = flgn != 0;
	VFLG = (flgs != flgo) && (flgn != flgo);
	CFLG = regs.x = ((ULONG)(src)) > ((ULONG)(dst));
}}

void op_4b8(void) /* SUB */
{
	LONG src = nextilong();
	CPTR dsta = (LONG)(WORD)nextiword();
	LONG dst = get_long(dsta);
	ULONG newv = ((LONG)(dst)) - ((LONG)(src));
	put_long(dsta,newv);
	ZFLG = ((LONG)(newv)) == 0;
{	int flgs = ((LONG)(src)) < 0;
	int flgo = ((LONG)(dst)) < 0;
	int flgn = ((LONG)(newv)) < 0;
	NFLG = flgn != 0;
	VFLG = (flgs != flgo) && (flgn != flgo);
	CFLG = regs.x = ((ULONG)(src)) > ((ULONG)(dst));
}}

void op_4b9(void) /* SUB */
{
	LONG src = nextilong();
	CPTR dsta = nextilong();
	LONG dst = get_long(dsta);
	ULONG newv = ((LONG)(dst)) - ((LONG)(src));
	put_long(dsta,newv);
{	int flgs = ((LONG)(src)) < 0;
	int flgo = ((LONG)(dst)) < 0;
	int flgn = ((LONG)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((LONG)(newv)) == 0;
	VFLG = (flgs != flgo) && (flgn != flgo);
	CFLG = regs.x = ((ULONG)(src)) > ((ULONG)(dst));
}}

void op_600(void) /* ADD */
{
	ULONG dstreg = opcode & 7;
	BYTE src = nextiword();
	BYTE dst = regs.d[dstreg].B.l;
	ULONG newv = ((BYTE)(dst)) + ((BYTE)(src));
	regs.d[dstreg].B.l = newv;
{	int flgs = ((BYTE)(src)) < 0;
	int flgo = ((BYTE)(dst)) < 0;
	int flgn = ((BYTE)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((BYTE)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((UBYTE)(~dst)) < ((UBYTE)(src));
}}

void op_610(void) /* ADD */
{
	ULONG dstreg = opcode & 7;
	BYTE src = nextiword();
	CPTR dsta = regs.a[dstreg];
	BYTE dst = get_byte(dsta);
	ULONG newv = ((BYTE)(dst)) + ((BYTE)(src));
	put_byte(dsta,newv);
{	int flgs = ((BYTE)(src)) < 0;
	int flgo = ((BYTE)(dst)) < 0;
	int flgn = ((BYTE)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((BYTE)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((UBYTE)(~dst)) < ((UBYTE)(src));
}}

void op_618(void) /* ADD */
{
	ULONG dstreg = opcode & 7;
	BYTE src = nextiword();
	CPTR dsta = regs.a[dstreg];
	BYTE dst = get_byte(dsta);
	regs.a[dstreg] += areg_byteinc[dstreg];
{	ULONG newv = ((BYTE)(dst)) + ((BYTE)(src));
	put_byte(dsta,newv);
{	int flgs = ((BYTE)(src)) < 0;
	int flgo = ((BYTE)(dst)) < 0;
	int flgn = ((BYTE)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((BYTE)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((UBYTE)(~dst)) < ((UBYTE)(src));
}}}

void op_620(void) /* ADD */
{
	ULONG dstreg = opcode & 7;
	BYTE src = nextiword();
	regs.a[dstreg] -= areg_byteinc[dstreg];
{	CPTR dsta = regs.a[dstreg];
	BYTE dst = get_byte(dsta);
	ULONG newv = ((BYTE)(dst)) + ((BYTE)(src));
	put_byte(dsta,newv);
{	int flgs = ((BYTE)(src)) < 0;
	int flgo = ((BYTE)(dst)) < 0;
	int flgn = ((BYTE)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((BYTE)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((UBYTE)(~dst)) < ((UBYTE)(src));
}}}

void op_628(void) /* ADD */
{
	ULONG dstreg = opcode & 7;
	BYTE src = nextiword();
	CPTR dsta = regs.a[dstreg] + (LONG)(WORD)nextiword();
	BYTE dst = get_byte(dsta);
	ULONG newv = ((BYTE)(dst)) + ((BYTE)(src));
	put_byte(dsta,newv);
{	int flgs = ((BYTE)(src)) < 0;
	int flgo = ((BYTE)(dst)) < 0;
	int flgn = ((BYTE)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((BYTE)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((UBYTE)(~dst)) < ((UBYTE)(src));
}}

void op_630(void) /* ADD */
{
	ULONG dstreg = opcode & 7;
	BYTE src = nextiword();
	CPTR dsta = get_disp_ea(regs.a[dstreg]);
	BYTE dst = get_byte(dsta);
	ULONG newv = ((BYTE)(dst)) + ((BYTE)(src));
	put_byte(dsta,newv);
{	int flgs = ((BYTE)(src)) < 0;
	int flgo = ((BYTE)(dst)) < 0;
	int flgn = ((BYTE)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((BYTE)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((UBYTE)(~dst)) < ((UBYTE)(src));
}}

void op_638(void) /* ADD */
{
	BYTE src = nextiword();
	CPTR dsta = (LONG)(WORD)nextiword();
	BYTE dst = get_byte(dsta);
	ULONG newv = ((BYTE)(dst)) + ((BYTE)(src));
	put_byte(dsta,newv);
{	int flgs = ((BYTE)(src)) < 0;
	int flgo = ((BYTE)(dst)) < 0;
	int flgn = ((BYTE)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((BYTE)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((UBYTE)(~dst)) < ((UBYTE)(src));
}}

void op_639(void) /* ADD */
{
	BYTE src = nextiword();
	CPTR dsta = nextilong();
	BYTE dst = get_byte(dsta);
	ULONG newv = ((BYTE)(dst)) + ((BYTE)(src));
	put_byte(dsta,newv);
{	int flgs = ((BYTE)(src)) < 0;
	int flgo = ((BYTE)(dst)) < 0;
	int flgn = ((BYTE)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((BYTE)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((UBYTE)(~dst)) < ((UBYTE)(src));
}}

void op_640(void) /* ADD */
{
	ULONG dstreg = opcode & 7;
	WORD src = nextiword();
	WORD dst = regs.d[dstreg].W.l;
	ULONG newv = ((WORD)(dst)) + ((WORD)(src));
	regs.d[dstreg].W.l = newv;
{	int flgs = ((WORD)(src)) < 0;
	int flgo = ((WORD)(dst)) < 0;
	int flgn = ((WORD)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((WORD)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((UWORD)(~dst)) < ((UWORD)(src));
}}

void op_650(void) /* ADD */
{
	ULONG dstreg = opcode & 7;
	WORD src = nextiword();
	CPTR dsta = regs.a[dstreg];
	WORD dst = get_word(dsta);
	ULONG newv = ((WORD)(dst)) + ((WORD)(src));
	put_word(dsta,newv);
{	int flgs = ((WORD)(src)) < 0;
	int flgo = ((WORD)(dst)) < 0;
	int flgn = ((WORD)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((WORD)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((UWORD)(~dst)) < ((UWORD)(src));
}}

void op_658(void) /* ADD */
{
	ULONG dstreg = opcode & 7;
	WORD src = nextiword();
	CPTR dsta = regs.a[dstreg];
	WORD dst = get_word(dsta);
	ULONG newv = ((WORD)(dst)) + ((WORD)(src));
	put_word(dsta,newv);
	regs.a[dstreg] += 2;
{	int flgs = ((WORD)(src)) < 0;
	int flgo = ((WORD)(dst)) < 0;
	int flgn = ((WORD)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((WORD)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((UWORD)(~dst)) < ((UWORD)(src));
}}

void op_660(void) /* ADD */
{
	ULONG dstreg = opcode & 7;
	WORD src = nextiword();
	regs.a[dstreg] -= 2;
{	CPTR dsta = regs.a[dstreg];
	WORD dst = get_word(dsta);
	ULONG newv = ((WORD)(dst)) + ((WORD)(src));
	put_word(dsta,newv);
{	int flgs = ((WORD)(src)) < 0;
	int flgo = ((WORD)(dst)) < 0;
	int flgn = ((WORD)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((WORD)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((UWORD)(~dst)) < ((UWORD)(src));
}}}

void op_668(void) /* ADD */
{
	ULONG dstreg = opcode & 7;
	WORD src = nextiword();
	CPTR dsta = regs.a[dstreg] + (LONG)(WORD)nextiword();
	WORD dst = get_word(dsta);
	ULONG newv = ((WORD)(dst)) + ((WORD)(src));
	put_word(dsta,newv);
{	int flgs = ((WORD)(src)) < 0;
	int flgo = ((WORD)(dst)) < 0;
	int flgn = ((WORD)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((WORD)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((UWORD)(~dst)) < ((UWORD)(src));
}}

void op_670(void) /* ADD */
{
	ULONG dstreg = opcode & 7;
	WORD src = nextiword();
	CPTR dsta = get_disp_ea(regs.a[dstreg]);
	WORD dst = get_word(dsta);
	ULONG newv = ((WORD)(dst)) + ((WORD)(src));
	put_word(dsta,newv);
{	int flgs = ((WORD)(src)) < 0;
	int flgo = ((WORD)(dst)) < 0;
	int flgn = ((WORD)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((WORD)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((UWORD)(~dst)) < ((UWORD)(src));
}}

void op_678(void) /* ADD */
{
	WORD src = nextiword();
	CPTR dsta = (LONG)(WORD)nextiword();
	WORD dst = get_word(dsta);
	ULONG newv = ((WORD)(dst)) + ((WORD)(src));
	put_word(dsta,newv);
{	int flgs = ((WORD)(src)) < 0;
	int flgo = ((WORD)(dst)) < 0;
	int flgn = ((WORD)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((WORD)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((UWORD)(~dst)) < ((UWORD)(src));
}}

void op_679(void) /* ADD */
{
	WORD src = nextiword();
	CPTR dsta = nextilong();
	WORD dst = get_word(dsta);
	ULONG newv = ((WORD)(dst)) + ((WORD)(src));
	put_word(dsta,newv);
{	int flgs = ((WORD)(src)) < 0;
	int flgo = ((WORD)(dst)) < 0;
	int flgn = ((WORD)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((WORD)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((UWORD)(~dst)) < ((UWORD)(src));
}}

void op_680(void) /* ADD */
{
	ULONG dstreg = opcode & 7;
	LONG src = nextilong();
	LONG dst = regs.d[dstreg].D;
	ULONG newv = ((LONG)(dst)) + ((LONG)(src));
	regs.d[dstreg].D = (newv);
{	int flgs = ((LONG)(src)) < 0;
	int flgo = ((LONG)(dst)) < 0;
	int flgn = ((LONG)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((LONG)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((ULONG)(~dst)) < ((ULONG)(src));
}}

void op_690(void) /* ADD */
{
	ULONG dstreg = opcode & 7;
	LONG src = nextilong();
	CPTR dsta = regs.a[dstreg];
	LONG dst = get_long(dsta);
	ULONG newv = ((LONG)(dst)) + ((LONG)(src));
	put_long(dsta,newv);
{	int flgs = ((LONG)(src)) < 0;
	int flgo = ((LONG)(dst)) < 0;
	int flgn = ((LONG)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((LONG)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((ULONG)(~dst)) < ((ULONG)(src));
}}

void op_698(void) /* ADD */
{
	ULONG dstreg = opcode & 7;
	LONG src = nextilong();
	CPTR dsta = regs.a[dstreg];
	LONG dst = get_long(dsta);
	ULONG newv = ((LONG)(dst)) + ((LONG)(src));
	put_long(dsta,newv);
	regs.a[dstreg] += 4;
{	int flgs = ((LONG)(src)) < 0;
	int flgo = ((LONG)(dst)) < 0;
	int flgn = ((LONG)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((LONG)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((ULONG)(~dst)) < ((ULONG)(src));
}}

void op_6a0(void) /* ADD */
{
	ULONG dstreg = opcode & 7;
	LONG src = nextilong();
	regs.a[dstreg] -= 4;
{	CPTR dsta = regs.a[dstreg];
	LONG dst = get_long(dsta);
	ULONG newv = ((LONG)(dst)) + ((LONG)(src));
	put_long(dsta,newv);
{	int flgs = ((LONG)(src)) < 0;
	int flgo = ((LONG)(dst)) < 0;
	int flgn = ((LONG)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((LONG)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((ULONG)(~dst)) < ((ULONG)(src));
}}}

void op_6a8(void) /* ADD */
{
	ULONG dstreg = opcode & 7;
	LONG src = nextilong();
	CPTR dsta = regs.a[dstreg] + (LONG)(WORD)nextiword();
	LONG dst = get_long(dsta);
	ULONG newv = ((LONG)(dst)) + ((LONG)(src));
	put_long(dsta,newv);
{	int flgs = ((LONG)(src)) < 0;
	int flgo = ((LONG)(dst)) < 0;
	int flgn = ((LONG)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((LONG)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((ULONG)(~dst)) < ((ULONG)(src));
}}

void op_6b0(void) /* ADD */
{
	ULONG dstreg = opcode & 7;
	LONG src = nextilong();
	CPTR dsta = get_disp_ea(regs.a[dstreg]);
	LONG dst = get_long(dsta);
	ULONG newv = ((LONG)(dst)) + ((LONG)(src));
	put_long(dsta,newv);
{	int flgs = ((LONG)(src)) < 0;
	int flgo = ((LONG)(dst)) < 0;
	int flgn = ((LONG)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((LONG)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((ULONG)(~dst)) < ((ULONG)(src));
}}

void op_6b8(void) /* ADD */
{
	LONG src = nextilong();
	CPTR dsta = (LONG)(WORD)nextiword();
	LONG dst = get_long(dsta);
	ULONG newv = ((LONG)(dst)) + ((LONG)(src));
	put_long(dsta,newv);
{	int flgs = ((LONG)(src)) < 0;
	int flgo = ((LONG)(dst)) < 0;
	int flgn = ((LONG)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((LONG)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((ULONG)(~dst)) < ((ULONG)(src));
}}

void op_6b9(void) /* ADD */
{
	LONG src = nextilong();
	CPTR dsta = nextilong();
	LONG dst = get_long(dsta);
	ULONG newv = ((LONG)(dst)) + ((LONG)(src));
	put_long(dsta,newv);
{	int flgs = ((LONG)(src)) < 0;
	int flgo = ((LONG)(dst)) < 0;
	int flgn = ((LONG)(newv)) < 0;
	NFLG = flgn != 0;
	ZFLG = ((LONG)(newv)) == 0;
	VFLG = (flgs == flgo) && (flgn != flgo);
	CFLG = regs.x = ((ULONG)(~dst)) < ((ULONG)(src));
}}

void op_800(void) /* BTST */
{
	ULONG dstreg = opcode & 7;
	WORD src = nextiword();
	LONG dst = regs.d[dstreg].D;
	src &= 31;
	ZFLG = !(dst & (1 << src));
}

void op_810(void) /* BTST */
{
	ULONG dstreg = opcode & 7;
	WORD src = nextiword();
	CPTR dsta = regs.a[dstreg];
	BYTE dst = get_byte(dsta);
	src &= 7;
	ZFLG = !(dst & (1 << src));
}

void op_818(void) /* BTST */
{
	ULONG dstreg = opcode & 7;
	WORD src = nextiword();
	CPTR dsta = regs.a[dstreg];
	BYTE dst = get_byte(dsta);
	regs.a[dstreg] += areg_byteinc[dstreg];
	src &= 7;
	ZFLG = !(dst & (1 << src));
}

void op_820(void) /* BTST */
{
	ULONG dstreg = opcode & 7;
	WORD src = nextiword();
	regs.a[dstreg] -= areg_byteinc[dstreg];
{	CPTR dsta = regs.a[dstreg];
	BYTE dst = get_byte(dsta);
	src &= 7;
	ZFLG = !(dst & (1 << src));
}}

void op_828(void) /* BTST */
{
	ULONG dstreg = opcode & 7;
{{	WORD src = nextiword();
{	CPTR dsta = regs.a[dstreg] + (LONG)(WORD)nextiword();
	BYTE dst = get_byte(dsta);
	src &= 7;
	ZFLG = !(dst & (1 << src));
}}}}
void op_830(void) /* BTST */
{
	ULONG dstreg = opcode & 7;
{{	WORD src = nextiword();
{	CPTR dsta = get_disp_ea(regs.a[dstreg]);
{	BYTE dst = get_byte(dsta);
	src &= 7;
	ZFLG = !(dst & (1 << src));
}}}}}
void op_838(void) /* BTST */
{
{{	WORD src = nextiword();
{	CPTR dsta = (LONG)(WORD)nextiword();
	BYTE dst = get_byte(dsta);
	src &= 7;
	ZFLG = !(dst & (1 << src));
}}}}
void op_839(void) /* BTST */
{
{{	WORD src = nextiword();
{	CPTR dsta = nextilong();
	BYTE dst = get_byte(dsta);
	src &= 7;
	ZFLG = !(dst & (1 << src));
}}}}
void op_83a(void) /* BTST */
{
	ULONG dstreg;
	dstreg = 2;
{{	WORD src = nextiword();
{	CPTR dsta = m68k_getpc();
	dsta += (LONG)(WORD)nextiword();
{	BYTE dst = get_byte(dsta);
	src &= 7;
	ZFLG = !(dst & (1 << src));
}}}}}
void op_83b(void) /* BTST */
{
	ULONG dstreg;
	dstreg = 3;
{{	WORD src = nextiword();
{	CPTR dsta = get_disp_ea(m68k_getpc());
{	BYTE dst = get_byte(dsta);
	src &= 7;
	ZFLG = !(dst & (1 << src));
}}}}}
void op_83c(void) /* BTST */
{
{{	WORD src = nextiword();
{	BYTE dst = nextiword();
	src &= 7;
	ZFLG = !(dst & (1 << src));
}}}}
void op_840(void) /* BCHG */
{
	ULONG dstreg = opcode & 7;
{{	WORD src = nextiword();
{	LONG dst = regs.d[dstreg].D;
	src &= 31;
	ZFLG = !(dst & (1 << src));
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