 No.21958
Robbbert Senior Tester
Feb 10, 2024, 04:13
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Crash confirmed. ----------------------------------------------------- Exception at EIP=00007ff790fba547 (pic16c5x_device::execute_run()+0x00a7): ACCESS VIOLATION While attempting to read memory at 0000000000000003 ----------------------------------------------------- RAX=0000000000000000 RBX=000001e1d59ae490 RCX=000001e1dab2db40 RDX=0000000000000000 RSI=00007ff79dc14d20 RDI=000001e1d59b1fe8 RBP=00007ff79dc14ba0 RSP=0000004838b099b0 R8=000001e1d59ae490 R9=0000000000000102 R10=0000000000000001 R11=00001ffe49b7681c R12=0000000000000028 R13=000000000000003b R14=00007ff79d8a5520 R15=0000004838b09db0 ----------------------------------------------------- Stack crawl: 0000004838b09a00: 00007ff790fba547 (pic16c5x_device::execute_run()+0x00a7) 0000004838b09a70: 00007ff78fe7ebcd (device_scheduler::timeslice()+0x05fd) 0000004838b09bf0: 00007ff78fe7b8ff (running_machine::run(bool)+0x01bf) 0000004838b0f120: 00007ff79365daab (mame_machine_manager::execute()+0x024b) 0000004838b0f510: 00007ff797855736 (cli_frontend::start_execution(mame_machine_manager*, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&)+0x03e6) 0000004838b0f7f0: 00007ff797855d5b (cli_frontend::execute(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&)+0x007b) 0000004838b0f850: 00007ff793658269 (emulator_info::start_frontend(emu_options&, osd_interface&, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&)+0x0029) 0000004838b0fc10: 00007ff7994fd6d3 (luaopen_lfs+0xc284d3) 0000004838b0fce0: 00007ff78b5413b1 (__tmainCRTStartup+0x0231) 0000004838b0fd10: 00007ff78b5414e6 (mainCRTStartup+0x0016) 0000004838b0fd40: 00007fffff657344 (BaseThreadInitThunk+0x0014) 0000004838b0fdc0: 00007ff8006626b1 (RtlUserThreadStart+0x0021) |
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 No.21959
hap Developer
Feb 12, 2024, 11:12
edited on: Feb 12, 2024, 11:14
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Yup, I confirmed with hh_pic16.cpp "touchme" (easier to reproduce since it has a single CPU). The not-functional but not-crashing watchpoint issue could be a different cause. |
 No.21960
AJR Developer
Feb 13, 2024, 01:19
edited on: Feb 13, 2024, 01:22
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I remember MAME's pic16c5x and pic16c62x cores handling register file accesses in a particularly ugly and bad way. I began a WIP to clean them up many years ago, but it only actually covered the latter core, was never tested properly, and ended up being lost when my old computer died. There's a good argument that wpd 0, 1, w *shouldn't* do anything useful here (though it also shouldn't crash), because MAME's watchpoints are designed to trap physical memory addresses and INDF is "not a physical register" as Microchip's manuals consistently state. In my pic17 and rii CPU cores, I translate INDF0 and INDF1 references before attempting to access internal memory. |