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General Jamma and pre-Jamma
This is the right Forum if you have any project for converting General Jamma Boards or Pre-Jamma boards.
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Sticky
Retro Hardware Capacitors LISTS
sk8er000
Oct 16, 2019
6
7
8
Replies
143
Views
29K
Jun 5, 2022
ekorz
Sticky
How to tell the difference between Irem M72, M81, M82, M84, and M85 Hardware
twistedsymphony
Jul 14, 2018
2
Replies
22
Views
19K
Oct 5, 2018
Retro Arcade 562
J
MK1 to CPS1 kick harness issue
jitu757
Yesterday at 8:59 PM
Replies
0
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17
Yesterday at 8:59 PM
jitu757
J
Lei Shen Zhuan / Battle Garegga hack - Help / Advice needed
yosai
Jan 30, 2019
6
7
8
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144
Views
17K
Yesterday at 1:47 PM
twistedsymphony
ANNOUNCEMENT - MMS1 - A 16 in 1 MULTI FOR JALECO MEGASYSTEM1(A) FROM CAIUS + HAMMY
Hammy
Jul 19, 2021
16
17
18
Replies
344
Views
19K
Saturday at 7:30 AM
Hammy
Snow Bros. 2: With New Elves region dip settings
nem
Jul 21, 2021
Replies
1
Views
654
Jun 22, 2022
firehawk618
F
Atomic Robo Kid CPU replacement
Gamesmonkey
Jun 21, 2022
Replies
6
Views
162
Jun 21, 2022
Gamesmonkey
C
A little tip for Killer Instinct repair
CoolFox
Jun 15, 2022
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2
Views
122
Jun 15, 2022
CoolFox
C
Games that don't have Attract Mode during Free Play
twistedsymphony
Apr 25, 2019
2
3
Replies
51
Views
9K
Jun 7, 2022
dos
Namco NB-1 conversion to Nebula’s Ray
LaTraille
Mar 14, 2018
4
5
6
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118
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52K
Jun 5, 2022
welovegame
W
Raiden II Backup battery/ Hi-Score Save
twistedsymphony
Sep 18, 2018
Replies
14
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3K
May 30, 2022
kold666
K
Released: Gaelco Conversions. Squash or Thunder Hoop into Biomechanical Toy
Darksoft
Dec 30, 2017
8
9
10
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185
Views
39K
May 29, 2022
dewmansnk
Cannon Dancer/Osman Conversion -> The FREE Edition once and for all (JoeMac/Magical Drop pcb)
TheDeath
May 14, 2020
4
5
6
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101
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11K
May 28, 2022
THCsoftcore
IREM BomberMan World no audio diagnostics help request. YM2151?
Kujako
May 5, 2022
2
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29
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723
May 13, 2022
Derick2k
Jaleco Megasystem 1A 16 bit Overclocking Guide
Hammy
Sep 24, 2021
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1
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618
May 11, 2022
Hammy
[REPAIRED] Konami The Simpson color error on tiles
Tailsnic Retroworks
Apr 29, 2022
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1
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350
May 8, 2022
Tailsnic Retroworks
[REPAIRED] Konami Vendetta 4f 5f BAD
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Mar 27, 2022
Replies
2
Views
462
May 4, 2022
Tailsnic Retroworks
Sega System C2 conversions: all games patched and released
waiwainl
Dec 9, 2017
2
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31
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9K
Apr 20, 2022
keropi
Irem M84 Conversions
Derick2k
Jan 9, 2018
6
7
8
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145
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27K
Apr 17, 2022
stj
Converted Psikyo SH2
twistedsymphony
Mar 14, 2018
2
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27
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8K
Apr 11, 2022
twistedsymphony
Legionnaire (TAD/Fabtek) Troubleshooting
TheDeath
Dec 30, 2020
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1
Views
468
Apr 10, 2022
TheDeath
[REPAIRED] Violent Storm boots but not showing test screen
Tailsnic Retroworks
Feb 18, 2022
Replies
10
Views
717
Mar 22, 2022
Tailsnic Retroworks
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