void Dasm(unsigned op,
		unsigned PC,
		unsigned A,unsigned X, unsigned Y,unsigned Flags,unsigned SP,
		unsigned PPU_X, unsigned PPU_Scanline)
{
        static const char modetable[] =
        "@VaFCSsC@A`AHXxHBWwGDTtD@Z@JIYyIHVaFSSsC@A`AXXxHBWwGDTtD@Z@JIYyI"
        "@VaFCSsC@A`AHXxHBWwGDTtD@Z@JIYyI@VaFCSsC@A`AKXxHBWwGDTtD@Z@JIYyI"
        "afAFcccC@a@AhhhHBggGddeE@j@JIiJIAVAFSSSC@A@AXXXHBWWGTTUE@Z@JYYZJ"
        "AVAFSSsC@A@AXXxHBWwGDTtD@Z@JIYyIAVAFSSsC@A@AXXxHBWwGDTtD@Z@JIYyI"
        "@@@";
        static const char flag2[] =
        "  ***  *   **  *  ***  *  ***  *  **   *   *   *  ***  *  ***  *"
        "  ***  *   *   *  ***  *  ***  *  ***  *   *   *  ***  *  ***  *"
        "  **   *   *   *  **   *   ** **   *   *   *   *  **   *   *   *"
        "  **   *   *   *  ***  *  ***  *  **   *       *  ***  *  ***  *"
        "  *";
        static const char grammar[] =
"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghioklmnpqjrstuvwxyz-.+%<=>@?[]&";
        static const char opmatch[] =
        "6Zhu1ZhuIZh%1ZhuAZhu1ZhuQZ1u1Zhu7aiv0aivJai%0aivBaiv1aivRa1v1aiv"
        "8bow1bowKbo<YbowCbow1bowSb1w1bow9ckx1ckxLck=YckxDckx1ckxTc1x1ckx"
        "2d1y2dlyMdqy2dlyEdly2dlyXdsy@d?y3emz3emzNejz3emzFemz3emzUet-3emz"
        "4f1.4fn.Ofr>4fn.Gfn.1fn.Vf1.1fn.5g1+5gp+Pg1g5gp+Hgp+1gp+Wg1+1gp+"
        "[]&";
        static const char opnames[] =
"bitnopstyldycpycpxbrkjsrrtirtsbplbmibvcbvsbccbcsbnebeqphpplpphapladeytay"
"inyinxclcseccliseiclvcldsedtyajmporaandeoradcstaldacmpsbcaslrollsrrorstx"
"ldxdecinctxataxdextxstsxslorlasrerrasaxlaxlasdcpisbancasrarrsbxshyshx"
"NMIRESINT";

            unsigned mode = modetable[op], on = opmatch[op];
            const char* insname = strchr(grammar,on) ? opnames+3*(strchr(grammar,on)-grammar) : "???";
            const char* pfx = "\0---#\0--(\0--,x\0-,y\0-,x)\0),y\0)"+4*("010000220002"[mode&15]&15);
            const char* sfx = "\0---#\0--(\0--,x\0-,y\0-,x)\0),y\0)"+4*("000034560347"[mode&15]&15);
            const unsigned n = "01111111222220000"[mode&15]&15;
            unsigned a,m,addr;

            printf("%04X%s%02X", PC-1, op<0x100?"  ":" ", op);
            for(a=1; a<3; ++a) printf(a<=n?" %02X":"   ", ROM_Read(PC+a-1));
            printf(" %c", flag2[op]); // unofficial/official
            m = printf("%.3s %s%s", insname, pfx, n?"$":"");
            if((op&0x9F) == 0x0A) m += printf(" a"); // implied
            addr = 0;
            if((mode&15) == 2)
                m += printf("%04X", addr = PC+1+s8(ROM_Read(PC)));
            else
                for(a=n; a-->=1; )
                {
                    unsigned v = ROM_Read(PC+a);
                    addr = addr*256 + v;
                    m += printf("%02X", v);
                }
            m += printf("%s", sfx);
            if(n>0 && (mode&15)>2 && *insname != 'j')
            {
                m += printf(" = %02X", addr<0x2000 ? RAM[addr&0x7FF] : (ROM_Read(addr)) );
            }
            printf("%*s", 32-m, "");
            printf("A:%02X X:%02X Y:%02X P:%02X SP:%02X CYC:%3u SL:%d\n",
                A, X, Y,
               (Flags & 0xEF) | 0x20,
                SP,
                PPU_X, PPU_Scanline);
}