midway/williams.cpp: Add a Spanish Defender bootleg clone

[clawgrip]

New WORKING clone

Operacion Defender (Operamatic bootleg) [Recreativas.org]

• Changed 'galwars2' to use 6802 for sound instead of 6808 (confirmed with the real PCB).
• Reformatted single-line comments

[cuavas]

Do you have any useful information on why this isn’t working or how the hardware differs that can be added? I’m mostly concerned for anyone who might want to try getting it working in the future.

[clawgrip]

Do you have any useful information on why this isn’t working or how the hardware differs that can be added? I’m mostly concerned for anyone who might want to try getting it working in the future.

It's exactly the same PCB as Petaco Defense.
We've finally repaired the PCB and behaves exactly as MAME, rebooting early on the rug pattern, so it's likely a bad ROM. We've redumped each ROM about ten times, getting the same results (and stable reads).

We'll try to determine at least which ones are bad and if it's worth adding it or not.

Thx!

[clawgrip]

Ok, we've identified the bad ROMs. I'd say it's a set worth preserving and documenting, even with two bad dumps.