MAMEWorld Forums - EmuChat - Re: Undumped earlier Sega Hang-On revision

fwiw MAME already recognizes everything in the zip you uploaded

[MINGW64] D:\mame2018\200618>mame64 -romident k:\mameseed\hangon3.zip
Identifying k:\mameseed\hangon3.zip....
epr-6838.ic51 = epr-6919.ic51 hangon Hang-On (Rev A)
= epr-6919.ic51 hangon1 Hang-On
epr-6839.ic63 = epr-6920.ic63 hangon Hang-On (Rev A)
= epr-6920.ic63 hangon1 Hang-On
epr-6844a.ic119 = epr-6844.ic123 endurob2 Enduro Racer (bootleg set 2)
= epr-6844.ic123 endurobl Enduro Racer (bootleg set 1)
= epr-6844.ic123 enduror Enduro Racer (YM2151) (FD1089B 317-0013A)
= epr-6844.ic123 enduror1 Enduro Racer (YM2203) (FD1089B 317-0013A)
= epr-6844.ic123 enduror1d Enduro Racer (YM2203) (bootleg of FD1089B 317-0013A set)
= epr-6844.ic123 endurora Enduro Racer (YM2151) (mask ROM sprites, FD1089B 317-0013A)
= epr-6844.ic123 endurord Enduro Racer (YM2151) (bootleg of FD1089B 317-0013A set)
= epr-6844.ic123 hangon Hang-On (Rev A)
= epr-6844.ic123 hangon1 Hang-On
= epr-6844.ic119 hangon2 Hang-On (ride-on)
= epr-6844.119 shangonho Super Hang-On (Hang-On conversion, Japan, FD1094 317-0039)
= epr-6844.119 shangonrb Super Hang-On (Hang-On conversion, bootleg)
= sho-philco-s-22-c-d2.bin shangonrb2 Super Hang-On (Hang-On conversion, Beta bootleg)
= epr-6844.119 shangonro Super Hang-On (Hang-On conversion, ride-on, Japan, FD1094 317-0038)
= epr-6844.ic123 sharrier Space Harrier (Rev A, 8751 315-5163A)
= epr-6844.ic123 sharrier1 Space Harrier (8751 315-5163)
epr-6848.ic6 = epr-6915a.ic6 hangon Hang-On (Rev A)
epr-6849.ic8 = epr-6916a.ic8 hangon Hang-On (Rev A)
epr-6850.ic20 = epr-6917a.ic20 hangon Hang-On (Rev A)
epr-6851.ic22 = epr-6918a.ic22 hangon Hang-On (Rev A)

Just as you say, the names are different

So there's no new revision here, just different names

Unfortunately as your board has handwritten labels it's likely that it was a user upgrade, maybe from an older MAME (or other emulator) romset with the incorrect names.

The fact the CPU was inserted the wrong way around may also suggest that the original board had a security module instead, and somebody was trying to convert this to an 'unprotected' set and messed up at the final hurdle. We have no dumps of protected Hang On sets, only a protected Super Hang On using the same PCB, although a conversion FROM Super Hang On would explain why every single rom appears to have been replaced (all your labels are handwritten)

Either way I'm inclined to think this isn't "from factory" and that the labels on your chips may actually just be adding to confusion rather than helping to resolve it.