07189: qb3: Black Screen / Exception after OK

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
07189	Crash/Freeze	Critical (emulator)	Always	Dec 29, 2018, 18:22	Dec 30, 2018, 07:46

Tester	Tafoid	View Status	Public	Platform	MAME (Official Binary)
Assigned To	Osso	Resolution	Fixed	OS	Windows Vista/7/8 (64-bit)
Status [?]	Resolved			Driver	cinematronics/cinemat.cpp
Version	0.205	Fixed in Version	0.206	Build
		Fixed in Git Commit		Github Pull Request #

Summary	07189: qb3: Black Screen / Exception after OK
Description	Exception at EIP=0000000006983b43 (handler_entry_read_memory_bank<0, 0, 1>::read(unsigned int, unsigned char)+0x0023): ACCESS VIOLATION While attempting to read memory at 0000000000000000 Stack crawl: 0000000000229340: 0000000006983b43 (handler_entry_read_memory_bank<0, 0, 1>::read(unsigned int, unsigned char)+0x0023) 00000000002293e0: 0000000003295287 (ccpu_cpu_device::execute_run() [clone .part.61]+0x0097) 0000000000229410: 000000000329686d (non-virtual thunk to ccpu_cpu_device::execute_run()+0x001d) 00000000002294c0: 000000000458acd2 (device_scheduler::timeslice()+0x04a2)
Steps To Reproduce
Additional Information	First regression - Dec 16 - screen went blank and no emulation showing -hanging up Was not detected, no snapshot diff or wavdata diff or exception showing. https://github.com/mamedev/mame/commit/56bb41208ad0de815d82f3bd1a2f546e126b9535 Second regression - Dec 20 - Exception begins. Suspect changes in emumem.cpp Was not flagged for individual testing due to a global change - only tested sets which had save state issues. https://github.com/mamedev/mame/commit/a9e6f19320a9f0c8489c6001b23a72ab232b23a0
Github Commit

Flags
Regression Version	0.205
Affected Sets / Systems	qb3

Attached Files