Viewing Issue Advanced Details
|ID||Category [?]||Severity [?]||Reproducibility||Date Submitted||Last Update|
|01666||Side-by-side||Minor||Have not tried||Apr 3, 2008, 18:34||Nov 13, 2017, 01:28|
|Tester||Gary Walton||View Status||Public||Platform|
|Version||0.37b8||Fixed in Version||Build|
|Summary||01666: mooncrst: Side-by-side test.|
|Description||Setting both mame and PCB off together, everything is fine up to and including the sequence following the docking( i.e. docking and then the bug-type aliens ). During the *next* sequence, the PCB always dies first, leaving five (or six - it's hard to tell) aliens left. Mame dies a couple of seconds later leaving three aliens. This results in the next sequence being totally different as the PCB has ships II and III whilst mame has ships I and III. The demo sequence is not random and is the same each time it plays.|
|Steps To Reproduce|
This report is derived from 01023 in 0.124u1.
|Flags||Verified with Original|
|Affected Sets / Systems||mooncrst|
Nov 12, 2017, 22:07
edited on: Nov 12, 2017, 22:10
there's some additional evidence (including videos) for this one in the Mameworld post
strange thing to have broken since 0.37b8 (3 October 2000), but it really looks like that's the last time Moon Cresta actually worked properly.
Nov 13, 2017, 01:27
Nope, this isn't a regression. MAME Moon Cresta attract mode when compared to PCB has never worked properly.
0.37b8 is same as it is now. 0.36 is same as it is now too.
JonBoyRetro at MAMEWorld said it's fine on Mame4All PSP v4.9r2, which is based on 0.34. But 0.34 is still not right. While it does show 2 'docking sessions', the demo play not identical to the PCB.
If you change vsync to exactly 60hz in current MAME, attract mode will be same as in MAME 0.34.
It's possibly video(interrupt) timing related. Or something more obscure, like number of CPU cycles from power-on until 1st IRQ.