BugID: #02783

Program received signal SIGSEGV, Segmentation fault.
0x00bbac29 in debug_read_opcode (space=0x12fd1750, address=16777215, size=2,
    arg=0) at src/emu/debug/debugcpu.c:1745
1745                    case 2: return *(UINT16 *)ptr;
(gdb) bt full
#0  0x00bbac29 in debug_read_opcode (space=0x12fd1750, address=16777215,
    size=2, arg=0) at src/emu/debug/debugcpu.c:1745
        info = (cpu_debug_data *) 0x1a971a70
        lowbits_mask = 1
        ptr = (const void *) 0x138d1fff
#1  0x00bc824a in disasm_view_generate_bytes (space=0x12fd1750,
    pcbyte=16777215, numbytes=2, minbytes=2, string=0x1d48114e " ",
    maxchars=26, encrypted=0) at src/emu/debug/debugvw.c:1783
        byte = 491262287
        offset = 0
        val = 283959103771
#2  0x00bc8864 in disasm_view_recompute (view=0x1d3a1fa4, pc=16777217,
    startline=0, lines=1000) at src/emu/debug/debugvw.c:1919
        destbuf = 0x1d481112 " FFFFFF  dc.w    $00ed; ILLEGAL", ' ' <repeats 30
times>
        buffer = "dc.w    $00ed; ILLEGAL", '\0' <repeats 77 times>
        oldbuf = '\0' <repeats 99 times>
        instr = 3
        pcbyte = 16777215
        physpcbyte = 16777215
        numbytes = 2
        dasmdata = (debug_view_disasm *) 0x1d3c1fa8
        space = (const address_space *) 0x12fd1750
        minbytes = 2
        maxbytes = 10
        maxbytes_clamped = 10
        changed = 0
        line = 3
#3  0x00bc8c96 in disasm_view_update (view=0x1d3a1fa4)
    at src/emu/debug/debugvw.c:2051
        backpc = 16777203
        dasmdata = (debug_view_disasm *) 0x1d3c1fa8
        space = (const address_space *) 0x12fd1750
        dest = (debug_view_char *) 0x1d3b1f38
        recomputed_this_time = 0
        pc = 16777215
        pcbyte = 16777215
        exprerr = 0
        row = 0
#4  0x00bc5d7d in debug_view_end_update (view=0x1d3a1fa4)
    at src/emu/debug/debugvw.c:507
        size = 100
#5  0x00bc9346 in disasm_view_set_expression (view=0x1d3a1fa4,
    expression=0x21b1054 "curpc") at src/emu/debug/debugvw.c:2303
        dasmdata = (debug_view_disasm *) 0x1d3c1fa8
#6  0x0096eaf4 in console_create_window (machine=0xad41efc)
    at src/osd/windows/debugwin.c:2355
        regsubview = (const registers_subview_item *) 0x0
        dasmsubview = (const disasm_subview_item *) 0x0
        info = (debugwin_info *) 0x1d351654
        bestwidth = 65535
        bestheight = 1
        bounds = {left = 129755264, top = 0, right = 0, bottom = -10000}
        work_bounds = {left = 2292444, top = 1944496414, right = 2292412,
  bottom = -10000}
        optionsmenu = (HMENU) 0x3c5064f
        conchars = 2103560904
#7  0x0096a47e in osd_wait_for_debugger (device=0xadb1f71, firststop=1)
    at src/osd/windows/debugwin.c:237
        message = {hwnd = 0x9d7f5d, message = 4294967264, wParam = 1,
  lParam = 2292564, time = 12288160, pt = {x = 466886640, y = 0}}
#8  0x00bb8875 in debug_cpu_instruction_hook (device=0xadb1f71, curpc=0)
    at src/emu/debug/debugcpu.c:587
        firststop = 1
        global = (debugcpu_private *) 0x1a751f70
        info = (cpu_debug_data *) 0x1ace1a70
#9  0x00c18cf3 in debugger_instruction_hook (device=0xadb1f71, curpc=0)
    at src/emu/debugger.h:50
No locals.
#10 0x00c17b2b in cpu_execute_z80 (device=0xadb1f71, cycles=227)
    at src/emu/cpu/z80/z80.c:3525
        z80 = (z80_state *) 0x14281734
#11 0x009d9e71 in cpu_execute (device=0xadb1f71, cycles=227)
    at src/emu/cpuintrf.h:557
        classheader = (cpu_class_header *) 0x14282fd8
#12 0x009d9601 in cpuexec_timeslice (machine=0xad41efc)
    at src/emu/cpuexec.c:280
        delta = {seconds = 0, attoseconds = 63613231552162}
        classdata = (cpu_class_data *) 0x142817a8
        call_debugger = 1
        global = (cpuexec_private *) 0x140f1efc
        target = {seconds = 0, attoseconds = 63613231552162}
        base = {seconds = 0, attoseconds = 0}
        cpu = (const device_config *) 0xadb1f71
        ran = 181673724
#13 0x009c765d in mame_execute (options=0x8051e58) at src/emu/mame.c:360
        settingsloaded = 0
        driver = (const game_driver *) 0x1d13d90
        machine = (running_machine *) 0xad41efc
        mame = (mame_private *) 0xad51f68
        cb = (callback_item *) 0x8051e58
        gamename = (astring *) 0xad41f00
        exit_pending = 0
        error = 0
        firstgame = 0
        firstrun = 0
#14 0x00bdb66c in cli_execute (argc=6, argv=0x7fb1fe8, osd_options=0x21ae990)
    at src/emu/clifront.c:171
        options = (core_options *) 0x8051e58
        gamename = (astring *) 0x8031f00
        exename = (astring *) 0x8041f00
        gamename_option = 0x8081f08 "mt_aftrb"
        driver = (const game_driver *) 0x1d13d90
        result = -1
#15 0x009618b8 in utf8_main (argc=6, argv=0x7fb1fe8)
    at src/osd/windows/winmain.c:257
        ext = 0x28e86b8 ".map"
#16 0x0123f599 in main (argc=6, a_argv=0x64527f0) at src/osd/windows/main.c:72
        i = 6
        rc = 2293624
        utf8_argv = (char **) 0x7fb1fe8
        argv = (TCHAR **) 0x6452868
        wenviron = (WCHAR **) 0x6455080
        startupinfo = -1