-----------------------------------------------------
Exception at EIP=0000000000000000 (): ACCESS VIOLATION
While attempting to write memory at 0000000000000000
-----------------------------------------------------
RAX=0000000003598D48 RBX=0000000000000000 RCX=0000000000000000 RDX=0000000002E97318
RSI=0000000003626BD8 RDI=00000000001E6160 RBP=0000000000000000 RSP=00000000001E6118
 R8=0000000000000000  R9=0000000000000069 R10=FEFEFEFEFEFEFEFF R11=8080808080808080
R12=0000000000000000 R13=0000000000000000 R14=0000000000000000 R15=0000000000000000
-----------------------------------------------------
Stack crawl:
  00000000001E6110: 0000000000000000 ()
  00000000001E6160: 000000013FD5D3B6 (delegate_mfp::method_stub<multi16_state,void,address_space & __ptr64,unsigned int,unsigned char,unsigned char>+0x0076, s:\svn\mame\src\emu\delegate.h:338)
  00000000001E61A0: 000000013F78FDE6 (delegate_base<void,address_space & __ptr64,unsigned int,unsigned char,unsigned char,_noparam>::operator()+0x0056, s:\svn\mame\src\emu\delegate.h:543)
  00000000001E6210: 0000000140FD5533 (handler_entry_write::write_stub_16+0x0163, s:\svn\mame\src\emu\memory.c:5207)
  00000000001E6260: 0000000140FE3F1C (delegate_mfp::method_stub<handler_entry_write,void,address_space & __ptr64,unsigned int,unsigned short,unsigned short>+0x006c, s:\svn\mame\src\emu\delegate.h:338)
  00000000001E62A0: 00000001410360F8 (delegate_base<void,address_space & __ptr64,unsigned int,unsigned short,unsigned short,_noparam>::operator()+0x0058, s:\svn\mame\src\emu\delegate.h:543)
  00000000001E62E0: 000000014104E07B (handler_entry_write::write16+0x005b, s:\svn\mame\src\emu\memory.c:491)
  00000000001E6340: 00000001410533B6 (address_space_specific<unsigned short,0,0>::write_native+0x0136, s:\svn\mame\src\emu\memory.c:1111)
  00000000001E63B0: 000000014100C651 (address_space_specific<unsigned short,0,0>::write_direct<unsigned char,1>+0x00e1, s:\svn\mame\src\emu\memory.c:1285)
  00000000001E63E0: 000000014104E722 (address_space_specific<unsigned short,0,0>::write_byte+0x0062, s:\svn\mame\src\emu\memory.c:1403)
  00000000001E6430: 0000000140897781 (i8086_outal+0x00d1, s:\svn\mame\src\emu\cpu\i86\instr86.c:2604)
  00000000001E6530: 00000001408A2C27 (cpu_execute_i8086+0x0467, s:\svn\mame\src\emu\cpu\i86\i86.c:333)
  00000000001E6560: 00000001413574B7 (legacy_cpu_device::execute_run+0x0037, s:\svn\mame\src\emu\devcpu.c:261)
  00000000001E6590: 0000000141124421 (device_execute_interface::run+0x0031, s:\svn\mame\src\emu\diexec.h:221)
  00000000001E66B0: 0000000141120EF2 (device_scheduler::timeslice+0x0432, s:\svn\mame\src\emu\schedule.c:489)
  00000000001E6C20: 000000014113C8AC (running_machine::run+0x034c, s:\svn\mame\src\emu\machine.c:396)
  00000000001ED3A0: 0000000140FC69F8 (mame_execute+0x01f8, s:\svn\mame\src\emu\mame.c:190)
  00000000001EF2C0: 000000014174A4EF (cli_frontend::execute+0x0a2f, s:\svn\mame\src\emu\clifront.c:255)
  00000000001EF7B0: 00000001416CB96B (utf8_main+0x017b, s:\svn\mame\src\osd\windows\winmain.c:484)
  00000000001EF7F0: 00000001416C75C0 (wmain+0x00b0, s:\svn\mame\src\osd\windows\main.c:82)
  00000000001EF840: 0000000141666C2C (__tmainCRTStartup+0x00ec, f:\dd\vctools\crt_bld\self_64_amd64\crt\src\crt0.c:241)
  00000000001EF870: 0000000141666D6E (wmainCRTStartup+0x000e, f:\dd\vctools\crt_bld\self_64_amd64\crt\src\crt0.c:164)
  00000000001EF8A0: 000000007738652D (BaseThreadInitThunk+0x000d)
  00000000001EF8F0: 000000007791C521 (RtlUserThreadStart+0x0021)