To get -effect to work on SDLMAME (fix will also work for SDLMESS and SDLHazeMD, but you might need to adjust the line numbers), just follow these directions.

Now that 573’s out and about, here’s a few tips from the driver comments:

• The first time you run each game, it will go through a special initialization procedure. This can be quite lengthy (in the case of Dark Horse Legend). Let it complete all the way before exiting MAME and you will not have to do it again!
• The first time you run Konami 80’s Gallery, it will dump you on a clock setting screen. Press DOWN to select “SAVE AND EXIT” then press player 1 START to continue.

Also, the .u1 files are BAD_DUMP because they are not real dumps of the protection cart, they were reverse-engineered by smf to make the games appear to be happy. There’s a good chance they are largely similar to what’s in the real carts but we can’t guarantee it.

The SDLMAME/MESS/HazeMD downloads have been restored and everything should be back in place.
In WIP news, smf finally found which backup disk had his 573 security stuff on it and that got Dark Horse Legend into game, although English speakers are unlikely to get much out of it (it’s not as simple a game as Gallop Racer).

I cleaned up and submitted the Konami System 573 driver. Konami 80s Gallery and Powerful Pro Baseball EX are playable, and Dark Horse Legend starts up but isn’t playable. No other games are supported at this time, and by “no other” I mean “no other”.