08229: lrescue, lrescuem, lrescuem2, grescue, escmars, mlander, desterth: Attract Mode different behavior than on actual pcb hardware.

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08229	Side-by-side	Minor	Always	Feb 22, 2022, 09:34	Mar 12, 2022, 05:25

Tester	chaneman	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Windows 10/11 (64-bit)
Status [?]	Direction Needed			Driver	midw8080/8080bw.cpp
Version	0.240	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	08229: lrescue, lrescuem, lrescuem2, grescue, escmars, mlander, desterth: Attract Mode different behavior than on actual pcb hardware.
Description	Lunar Rescue and Clones: "Attract Mode Ending" behavior. Correct Attract Mode Ending behavior on real Space Invaders PCB including Bootleg pcb is as such: I'm only reporting what is being noticed during the ending sequence of the attract mode, as from the moment the players ship leaves the mothership until the time it lands, seems to be consistant with actual pcb playback. (although it may not be.) Actual PCB Ending Sequence: After a man has entered the ship coming from the right side, the players ship begins to ascend while firing repeatedly as it moves upward to the right and left and again right then left. On this second time moving left, the players ship is hit by a missile from a large ufo as it enters the left side of the screen, while at the same time the players missile goes through this ufo not exploding it, but erasing the center of the ufo where the missile has just passed through and missile continues upward until the attract mode stops. This is a consistant Attract Mode and always repeats exactly the same way. M.A.M.E. Attract mode during the ascent always has the players ship colliding with a small ufo as it moves to the right a third time during ascent. Having shot and destroyed the larger ufo on it's way up the screen is where this "break" in attract mode happens as this large ufo is no longer there to kill the player with it's missile. Enclosed is a picture from me testing a Bootleg Cosmic Invaders PCB running Lunar Rescue during attract mode end, at the moment of the players destruction while it's last missile fired goes through the large ufo. Also "Escape From Mars" and "Rescate Lunar" in MAME should behave the same as Lunar Lander and Clones as mentioned above but they currently do their own different Attract Mode ending. I noticed the clock speed for these two is 1.800000 Mhz while all the other clones are running at 1.996800 Mhz. Perhaps the Attract Mode difference are all related to timing? The pcb I am testing in the pic was running Escape From Mars when I received it and can confirm it behaves like Lunar Rescue and the other Clones with the Attract Mode mentioned above and the video links below. Same behavior can be seen in these videos that are running actual pcb's: This video @ the 0:00 and then close up @ 21:38 This video @ 36:43
Steps To Reproduce	Load and run the games. Watch the Attract Modes and Video Links provided.
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	lrescue, lrescuem, lrescuem2, grescue, escmars, mlander, desterth

Attached Files	Luner Rescue Attract.jpg (1,886,467 bytes) Feb 22, 2022, 09:34 Uploaded by chaneman Player ship being destroyed on real pcb during attract mode.

No.19834 Robbbert Senior Tester Feb 23, 2022, 02:26	I can't really confirm this. For me, with resclunar and escmars, the missile goes through the middle of the ufo exactly as you described it should. On lrescue the missile passes in front of the ufo, then the ship moves to the left and is killed by the ufo's missile.
No.19892 stengun Tester Mar 12, 2022, 05:25	I tried to replicate this and indeed for the two games that are shown in the videos there is a difference in the attract mode. To make things easier I made two comparison videos between mame and the videos provided by the tester. mame version used: 0.241 - linux build mlander: lrescue: