(gdb) backtrace
#0 0x0000000000000078 in ?? ()
#1 0x0000000121d58d40 in util::detail::delegate_base<delegate_late_bind, void, sound_stream&, std::vector<read_stream_view, std::allocator<read_stream_view> > const&, std::vector<write_stream_view, std::allocator<write_stream_view> >&>::operator() (this=0x124b1c000, this=0x124b1c000, args#2=std::vector of length 1, capacity 1 = {...},
args#1=std::vector of length 0, capacity 0, args#0=...) at ../../../../../src/lib/util/delegate.h:760
#2 sound_stream::update_view (this=this@entry=0x124b1bee0, start=..., end=..., outputnum=, outputnum@entry=0) at ../../../../../src/emu/sound.cpp:742
#3 0x0000000121d5905c in sound_stream::update (this=0x124b1bee0) at ../../../../../src/emu/attotime.h:100
#4 0x000000012012d6e0 in non-virtual thunk to dac_byte_device_base::write(unsigned char) () at /usr/include/c++/8/ext/new_allocator.h:86
#5 0x0000000120c9bb44 in devcb_write<unsigned char, (unsigned char)255>::operator()(unsigned int, unsigned char, unsigned char) ()
at /usr/include/c++/8/bits/shared_ptr_base.h:404
#6 0x00000001202bce94 in addressable_latch_device::update_bit (this=0x1241dff00) at ../../../../../src/devices/machine/74259.cpp:216
#7 addressable_latch_device::enable_w (state=0, this=0x1241dff00) at ../../../../../src/devices/machine/74259.cpp:184
#8 addressable_latch_device::write_bit (d=, offset=, this=0x1241dff00) at ../../../../../src/devices/machine/74259.cpp:153
#9 addressable_latch_device::write_d0 (this=0x1241dff00, offset=, data=) at ../../../../../src/devices/machine/74259.cpp:241
#10 0x0000000120c3f534 in tms99xx_device::cru_output_operation (this=0x1241cd500) at ../../../../../src/lib/util/coretmpl.h:594
#11 0x0000000120c4534c in tms99xx_device::execute_run (this=0x1241cd500) at ../../../../../src/devices/cpu/tms9900/tms9900.cpp:1254
#12 0x0000000121d2b560 in device_execute_interface::run (this=0x1241cd7f0) at ../../../../../src/emu/diexec.h:189
#13 device_scheduler::timeslice (this=this@entry=0xffffff6128) at ../../../../../src/emu/schedule.cpp:456
#14 0x0000000121cc1e34 in running_machine::run (this=this@entry=0xffffff0ef0, quiet=quiet@entry=false) at ../../../../../src/emu/machine.cpp:348
#15 0x000000012273bee0 in mame_machine_manager::execute (this=this@entry=0x124059e20) at ../../../../../src/frontend/mame/mame.cpp:288
#16 0x00000001227e0c74 in cli_frontend::start_execution (this=this@entry=0xffffff6938, manager=manager@entry=0x124059e20, args=std::vector of length 3, capacity 3 = {...})
at ../../../../../src/frontend/mame/clifront.cpp:277
#17 0x00000001227e106c in cli_frontend::execute (this=this@entry=0xffffff6938, args=std::vector of length 3, capacity 3 = {...})
at ../../../../../src/frontend/mame/clifront.cpp:293
#18 0x00000001227385cc in emulator_info::start_frontend (options=..., osd=..., args=std::vector of length 3, capacity 3 = {...})
at ../../../../../src/frontend/mame/mame.cpp:453
#19 0x00000001200d3b68 in main (argc=, argv=) at ../../../../../src/osd/sdl/sdlmain.cpp:100
(gdb)
