Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
03633 Color/Palette Minor Always Jan 3, 2010, 01:56 Jun 11, 2018, 13:28
Tester M.A.S.H. View Status Public Platform MAME (Self-compiled)
Assigned To Resolution Open OS Windows XP (32-bit)
Status [?] Confirmed Driver scobra.cpp
Version 0.136 Fixed in Version Build Normal
Summary 03633: mimonkey: [possible] Wrong colors
Description Mighty Monkey (1982) has wrong colors. I compared MAME with the three
screenshots from the TAFA flyer. And the High Score text in MAME is yellow
and on the TAFA flyer red. The 'A CHINESE ANCIENT STORY' and
'UNIVERSAL VIDEA GAMES' text on the title screen have also different colors.
All colors looks like from a bootleg of Mighty Monkey.
The GAME_WRONG_COLORS flag must be set.

TAFA flyer:
Steps To Reproduce
Additional Information
Flags Possible
Regression Version
Affected Sets / Systems mimonkey
Attached Files
png file icon Flyer-Screenshots-1.png (191,509 bytes) Jan 3, 2010, 01:56
png file icon Mighty Monkey-MAME-Screenshots.png (12,437 bytes) Jan 3, 2010, 01:56
png file icon Mighty (120,460 bytes) Jan 23, 2014, 08:45 Uploaded by M.A.S.H.
png file icon Ebay_Mighty Monkey (Kaina Games).png (538,418 bytes) Aug 25, 2015, 10:27 Uploaded by M.A.S.H.
There are no relationship linked to this issue.
User avatar
Senior Tester
Jan 3, 2010, 03:39
it might just be a different version...
User avatar
Jan 3, 2010, 16:53
At this point, while the flyers show some semblance of color to give the impression they current MAME presentation is wrong , it's hard to flat out say they are incorrect without ruling out bad proms or something else. I'm willing to confirm this, but ask for further PCB confirmation which might never surface.

Also, remember this game is still in the to be antiquated scobra.c, which will eventually be merged into galdrvr.c There might be elements of this game which will improve with the merge to the updated driver.
User avatar
Senior Tester
Jan 23, 2014, 08:45
edited on: Jan 23, 2014, 08:50
Found Mighty Monkey snapshots at taken from actual arcade PCB
using video capture equipment (see Mighty
The ingame images on the right shows that Mighty Monkey has a starfield!
MAME's color prom is correct. All colors the arcade shots have are also in the color prom, but MAME's
palette_init is different. So i created my own color PROM to see if MAME's PROM has the correct palette
compared to the arcade shots. Some colors did i not found, they are using in collision sequences, but
the new MAME screenshots look identical the the arcade ones!

MAME's PROM_________My PROM

00 17 C7 F6_________00 31 07 F0
00 17 C0 3F_________00 17 07 F0
00 07 C0 3F_________00 17 C0 F0
00 C0 C4 07_________00 07 F0 F6
00 C7 31 17_________00 XX XX C0
00 31 C7 3F_________00 C4 31 07
00 F6 07 F0_________00 XX XX XX
00 3F 07 C4_________00 XX XX C0


00 black
07 red
17 orange
31 green
3F yellow
C0 Blue
C4 dark pink
C7 pink
F0 cyan
F6 white

00 - 00 Background
01 - 31 Players Body/Cloud COL2 (INTRO)
02 - 07 Players Face (INTRO)
03 - F0 Players Hair/Feets (INTRO)
04 - 00
05 - 17 Chinese Wall COL2
06 - 07 Players Face (INGAME)
07 - F0 Players Hair/Feets (INGAME)
08 - 00
09 - 17 Face of NIU MO WANG
0A - C0 Head of NIU MO WANG
0C - 00
0D - 07 Cloud COL2 after collision (see mimdead.gif)
0E - F0 Insect COL2 after collision (see mimdead.gif)
10 - 00
11 -
12 -
13 - C0 'SUN WU KONG'
14 - 00
15 - C4 Body of Insect COL1 (INTRO) + 'MIGHTY MONKEY' (INTRO) (see mimtit.gif)
16 - 31 Body of Insect COL2 (INTRO)
17 - 07 'HIGH SCORE'
18 - 00
19 -
1A -
1B -
1C - 00
1D -
1E -
1F - C0 'CREDIT'

User avatar
Jan 23, 2014, 18:08
edited on: Jan 23, 2014, 18:08
Can't say for certain but the PCB might be where the dump came from. Would bear further investigation.
In any event, sold off a large part of their collection so it's probably gone.
User avatar
Jan 24, 2014, 04:27
Anyhow, crafting your own color PROM to fix the colors in MAME is a "wrong fix", MASH. :)
User avatar
Senior Tester
Aug 25, 2015, 10:29
edited on: Aug 25, 2015, 10:31
Added the ebay auction photos from clone Mighty Monkey (Kaina Games, bootleg on Scramble hardware).
User avatar
Jun 9, 2018, 02:29
edited on: Jun 9, 2018, 02:30
From everything I've gathered so far, Mighty Monkey does look to use a nonstandard PROM decode. And I can't even tell how it works without seeing an actual shot of the PCB and tracing the wiremods. The Kaina Games bootleg does something similar, but in different execution as you can see by the different colors.

I'm heads up on straight confirming this issue.
User avatar
Jun 11, 2018, 13:28
Kaina Games bootleg appears to use a simple address line swap on the PROM (arranged in this order: 7, 6, 5, 4, 3, 2, 0, 1) while the real machine is using all jumbled sorts of crap.