08944: cactus: Exception at emulation start

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08944	Crash/Freeze	Critical (emulator)	Always	Oct 26, 2024, 23:01	Oct 27, 2024, 08:14

Tester	Tafoid	View Status	Public	Platform	MAME (Official Binary)
Assigned To	hap	Resolution	Fixed	OS	Windows Vista/7/8 (64-bit)
Status [?]	Resolved			Driver	nmk/nmk16.cpp
Version	0.270	Fixed in Version	0.271	Build
		Fixed in Git Commit	d79f5a6	Github Pull Request #

Summary	08944: cactus: Exception at emulation start
Description	Exception at start ----------------------------------------------------- Exception at EIP=00000001419c7656 (nmk16_state::nmk16_scanline(timer_device&, int)+0x0016): ACCESS VIOLATION While attempting to read memory at 0000000000000028 ----------------------------------------------------- RAX=0000000000000000 RBX=00000000028efc50 RCX=0000000002950080 RDX=00000000028efc50 RSI=0000000000000000 RDI=0de0b6b3a763ffff RBP=00000000004099e0 RSP=00000000004099c0 R8=0000000000000000 R9=0000000000539ce0 R10=000000174876e800 R11=0000000000000001 R12=0000000000000000 R13=f21f494c589c0000 R14=0000000151f2e540 R15=0000000000005f00 ----------------------------------------------------- Stack crawl: 00000000004099e0: 00000001419c7656 (nmk16_state::nmk16_scanline(timer_device&, int)+0x0016) 0000000000409a60: 000000014462f068 (timer_device::scanline_tick(int)+0x0098) 0000000000409ae0: 0000000146da3c6b (device_scheduler::timeslice()+0x014b) 0000000000409c70: 0000000146d5501f (running_machine::run(bool)+0x01bf) 000000000040f290: 0000000147863f6e (mame_machine_manager::execute()+0x021e)
Steps To Reproduce
Additional Information	Broken from what appears to be a commit (PR#12562) On July 26, 2024 https://github.com/mamedev/mame/pull/12562 https://github.com/mamedev/mame/commit/aaae6d69543f2718ee89f45b097af8d7cb76695d
Github Commit

Flags
Regression Version	0.268
Affected Sets / Systems	cactus

Attached Files