BugID: #05109

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Exception at EIP=000000013F26232C (+0x3f26232c): ACCESS VIOLATION
While attempting to write memory at 00000000047FE000
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RAX=0000000000000000 RBX=0000000000000000 RCX=00000000047FE000 RDX=0000000002BE2000
RSI=0000000000216718 RDI=0000000000216678 RBP=0000000000000000 RSP=00000000002165F0
 R8=00000000002164E4  R9=0000000000000000 R10=FEFEFEFEFEFEFEFF R11=8080808080808080
R12=0000000000000000 R13=0000000000000000 R14=0000000000000000 R15=0000000000000000
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Stack crawl:
  0000000000216680: 000000013F26232C (amstrad_plus_update_video+0x00ec, s:\svn\mame\src\mess\machine\amstrad.c:718)
  00000000002166C0: 000000013F260544 (amstrad_state::amstrad_plus_hsync_changed+0x0034, s:\svn\mame\src\mess\machine\amstrad.c:874)
  0000000000216730: 000000013F25CA08 (devcb_line_stub<amstrad_state,{amstrad_state::amstrad_plus_hsync_changed,0}>+0x0078, s:\svn\mame\src\emu\devcb.h:164)
  0000000000216760: 000000013F1C2406 (delegate_base<void,int,_noparam,_noparam,_noparam,_noparam>::operator()+0x0036, s:\svn\mame\src\emu\delegate.h:540)
  0000000000216790: 0000000140C8A0AA (mc6845_device::set_hsync+0x007a, s:\svn\mame\src\emu\video\mc6845.c:578)
  0000000000216850: 0000000140C8953E (mc6845_device::device_timer+0x018e, s:\svn\mame\src\emu\video\mc6845.c:752)
  0000000000216890: 0000000140C94526 (device_t::timer_expired+0x0056, s:\svn\mame\src\emu\device.h:231)
  0000000000216900: 0000000140C93CBF (device_scheduler::execute_timers+0x021f, s:\svn\mame\src\emu\schedule.c:914)
  0000000000216A20: 0000000140C90B4C (device_scheduler::timeslice+0x008c, s:\svn\mame\src\emu\schedule.c:432)
  0000000000216F90: 0000000140CAC8AC (running_machine::run+0x034c, s:\svn\mame\src\emu\machine.c:396)
  000000000021D710: 0000000140B369F8 (mame_execute+0x01f8, s:\svn\mame\src\emu\mame.c:190)
  000000000021F630: 00000001412BA4EF (cli_frontend::execute+0x0a2f, s:\svn\mame\src\emu\clifront.c:255)
  000000000021FB20: 000000014123B96B (utf8_main+0x017b, s:\svn\mame\src\osd\windows\winmain.c:484)
  000000000021FB60: 00000001412375C0 (wmain+0x00b0, s:\svn\mame\src\osd\windows\main.c:82)
  000000000021FBB0: 00000001411D6C2C (__tmainCRTStartup+0x00ec, f:\dd\vctools\crt_bld\self_64_amd64\crt\src\crt0.c:241)
  000000000021FBE0: 00000001411D6D6E (wmainCRTStartup+0x000e, f:\dd\vctools\crt_bld\self_64_amd64\crt\src\crt0.c:164)
  000000000021FC10: 000000007738652D (BaseThreadInitThunk+0x000d)
  000000000021FC60: 000000007791C521 (RtlUserThreadStart+0x0021)