Watching the Slam Tilt Twitch stream (hey Ron) on Mousin Around, I dug into the buggy sound ROM.
First of. When comparing sound between games, be sure to compare sound ROM revision(s) AND game ROM revision. One thing is the sound content. Another is its usage.
Mousin is a mess. Complete mess when it comes to release information on those sound ROMs.
It is true that one set of sound ROMs has flaws. But I cannot make out if it is L-1 or L-2 that is bad. One would think it is L-1, which was fixed. But it seems like L-2 was a change for the worse.
For this rundown, L-1 is defined to be the first relese and the one working.
The bad sound ROM will mess up at Cheezy bonus collect, Jackpot lit and Jackpot collect (with L-4 game ROM). Possibly more.
ROM files identified by the SHA1 checksum.
Mousin Around
Known Sound ROMs.
L-1:
Sound board:
U4: 45dea0f4c6f24d17e6f7dda75afaa7caefdc6b96
U19: 2b2fc8e7634b1885b020b2115126d6341172cc91
U20: Unused
CPU board:
U21: 443426be41c1413f22b137145dbc3bcf84d9ccc7
U22: 4f15696909e1f3574ad20b28e31da2c155ed129f
L-2:
Sound board:
U4: d9d20921eb42c19c5074c976608bfec0d3130204
U19: 272f0bd3885bb81da13ee6ed3d66f9424ccf4b0d
U20: Unused
CPU board:
Same as L-1
And this is the messy way to locate these files.
45dea0f4c6f24d17e6f7dda75afaa7caefdc6b96:
PinMAME pack: mous_u4.l2 **
Chip in reference game: U4 L-1
2b2fc8e7634b1885b020b2115126d6341172cc91:
PinMAME pack: mous_u19.l2 **
Chip in reference game: U19 L-1
443426be41c1413f22b137145dbc3bcf84d9ccc7:
PinMAME pack: mous_u20.l2 * **
WMS L-4 pack: mous_u20.l2 * **
WMS L-4 text: U20 L-1 *
Chip in reference game: U21 L-1
4f15696909e1f3574ad20b28e31da2c155ed129f:
PinMAME pack: mous_u22.l1
WMS L-4 pack: mous_u22.l1
WMS L-4 text: U22 L-1
Chip in reference game: U22 L-1
d9d20921eb42c19c5074c976608bfec0d3130204:
PinMAME pack: mous_u4.lx **
WMS L-4 pack: mous_u4.l2
WMS L-4 text: U4 L-2
272f0bd3885bb81da13ee6ed3d66f9424ccf4b0d:
PinMAME pack: mous_u19.lx **
WMS L-4 pack: mous_u19.l2
WMS L-4 text: U19 L-1 **
(*) indicating wrong IC location.
(**) indicating wrong revision.
The L-4 patch d87f modified software does not change any of the exsisting sound usage. But sound is added like this…
If Cheese or Streak runmode is selected and CHEESE is spelled out, hitting the center targets will once in a while cue the “Head for the hole” call out or the mouse laughter. To guide and, most importantly, to taunt the player.