question about EXIDY 440 ROM SWAP!!

LUCKYMAN

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I know that only 3 of ALL the boards are swappable (crossbow,cheyenne and chiller) and of course you can swap COMBAT with CATCH 22 (they are the same gamne)

my question is can you swap HIT AND MISS with SHOWDOWN roms??? those 2 boards look pretty much exact..

Before i go and swap over 40+ chips i was wondering if anyone knew???

i ask this cause i have hit and miss roms and i have a (working) showdown pcb.. the boards look almost exact.. and what about the security chip?

yes i do know that ALL 440 boards are CROSSBOW boards thats just becaue exidy used the same PCB boards but different layouts....
 
Nope. There are other hardware differences between the PCBs.

You can not swap crossbow to Cheyenne with a rom swap either.
 
The CPU boards are not interchangeable. However, you use a Crossbow audio board on Cheyenne by swapping only the 19 roms on the audio board.

well ive done that to the sound and it works.. i have a crossbow video with a cheyenne audio , with rom swaps and that worked, but you cant swap the videos you are saying??
 
IIRC, it's a few board hacks and chip swaps (inverting/non-inverting buffers) that the hardware looks for... it's all stuff that could be (tediously) fixed in software -- which is what I assume dave did on the multi....
 
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