BugID: #05160

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Exception at EIP=00000001407D6744 (+0x407d6744): ACCESS VIOLATION
While attempting to read memory at 00000000044D4000
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RAX=00000000044D4000 RBX=0000000000000000 RCX=0000000000040000 RDX=0000000000000000
RSI=0000000003E48858 RDI=0000000000136620 RBP=0000000000000000 RSP=00000000001365F0
 R8=0000000000000055  R9=00000000000000FF R10=FEFEFEFEFEFEFEFF R11=8080808080808080
R12=0000000000000000 R13=0000000000000000 R14=0000000000000000 R15=0000000000000000
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Stack crawl:
  0000000000136620: 00000001407D6744 (to8_data_lo_w+0x0084, s:\svn\mame\src\mess\video	homson.c:1304)
  0000000000136650: 00000001413F3424 (handler_entry_write::write_stub_legacy+0x0054, s:\svn\mame\src\emu\memory.c:5341)
  00000000001366A0: 000000014140179A (delegate_mfp::method_stub<handler_entry_write,void,address_space & __ptr64,unsigned int,unsigned char,unsigned char>+0x006a, s:\svn\mame\src\emu\delegate.h:338)
  00000000001366E0: 000000013FB327A6 (delegate_base<void,address_space & __ptr64,unsigned int,unsigned char,unsigned char,_noparam>::operator()+0x0056, s:\svn\mame\src\emu\delegate.h:543)
  0000000000136720: 000000014146B7D9 (handler_entry_write::write8+0x0059, s:\svn\mame\src\emu\memory.c:490)
  0000000000136770: 000000014146F4E3 (address_space_specific<unsigned char,1,0>::write_native+0x00d3, s:\svn\mame\src\emu\memory.c:1131)
  00000000001367A0: 000000014146BA92 (address_space_specific<unsigned char,1,0>::write_byte+0x0042, s:\svn\mame\src\emu\memory.c:1403)
  00000000001367D0: 0000000140C2FE64 (m6809_base_device::sta_ix+0x00d4, s:\svn\mame\src\emu\cpu\m6809\6809ops.c:1815)
  0000000000136800: 0000000140C156A7 (m6809_base_device::execute_run+0x0167, s:\svn\mame\src\emu\cpu\m6809\m6809.c:755)
  0000000000136830: 0000000141558811 (device_execute_interface::run+0x0031, s:\svn\mame\src\emu\diexec.h:216)
  0000000000136950: 00000001415552E2 (device_scheduler::timeslice+0x0432, s:\svn\mame\src\emu\schedule.c:489)
  0000000000136EC0: 000000014157054C (running_machine::run+0x034c, s:\svn\mame\src\emu\machine.c:396)
  000000000013D640: 00000001413E40C8 (mame_execute+0x01f8, s:\svn\mame\src\emu\mame.c:190)
  000000000013F560: 000000014152293F (cli_frontend::execute+0x0a2f, s:\svn\mame\src\emu\clifront.c:258)
  000000000013FA50: 0000000141B44AAB (utf8_main+0x017b, s:\svn\mame\src\osd\windows\winmain.c:493)
  000000000013FA90: 0000000141B406E0 (wmain+0x00b0, s:\svn\mame\src\osd\windows\main.c:82)
  000000000013FAE0: 0000000141ADFC8C (__tmainCRTStartup+0x00ec, f:\dd\vctools\crt_bld\self_64_amd64\crt\src\crt0.c:241)
  000000000013FB10: 0000000141ADFDCE (wmainCRTStartup+0x000e, f:\dd\vctools\crt_bld\self_64_amd64\crt\src\crt0.c:164)
  000000000013FB40: 0000000076CE652D (BaseThreadInitThunk+0x000d)
  000000000013FB90: 000000007728C521 (RtlUserThreadStart+0x0021)