Virtua Racing vs. Virtua Formula ROM differences?

[Wade]

I see that in the last few years, there have been big changes in VR/VF in the MAME world.  I have a Virtua Racing setup, and I'd like to see how many ROM chips I'd have to get burned to switch my setup to Virtua Formula.  It might not be worth it if there are too many ROMs changed, but since they are almost identical, I'm hoping it's only a chip or two per car.

This is for a 4 player linked setup so I'd need 4x of whatever Virtua Formula ROMs are different.

I know the game play is the same.  Would like to see a different attract demo for a change though, if it's inexpensive enough.

Thanks,
Wade

[PL1]

I'd like to see how many ROM chips I'd have to get burned to switch my setup to Virtua Formula.  It might not be worth it if there are too many ROMs changed, but since they are almost identical, I'm hoping it's only a chip or two per car.

This is for a 4 player linked setup so I'd need 4x of whatever Virtua Formula ROMs are different.

In MAME, Virtua Racing (vr.zip) is the parent ROM and Virtua Formula (vformula.zip) is the child ROM.

"vformula.zip" contains 7 files (ROMs 4, 5, 6, 7, 14, 15, and 17), so you'd need to burn 28 chips to convert a 4-player setup.


Scott

[Wade]

OK, 28 is a lot more than I was hoping for!  I bet that will add up.  Can you guys recommend some ROM burners so I can price this out?

Thanks,
Wade

[PL1]

"vformula.zip" contains 7 files (ROMs 4, 5, 6, 7, 14, 15, and 17)

Pretty sure these are the part numbers for most of the EPROMS you need to be able to burn.

Info is from lines 68 - 74 of the MAME Model1.cpp source code.

Code: [Select]

      IC4, IC5      - Hitachi HN27C1024 128k x16bit EPROM (DIP40)

      IC14, IC15    - Intel 27C040 512k x 8bit EPROM (DIP32)

      IC6, IC7, IC8,\
      IC9, IC10,    \
      IC11, IC12,   | 834000 4M MASKROM (DIP32)

Location of the ICs on the Memory Board is described in lines 37-57.
(see source code link above -- copy/pasting distorts the layout)

Looks like TwistyWrist has a decent price on 27C040 EPROMs if you want to practice burning IC14 or IC15.   

Guru's got some IC cross reference and other info here.


Scott