1. Spirantho, now that you have your cartridge extender try your other Tigervision carts on your 7800 that use 3F bankswitching:
Two notes on those ROMs:
1) Springer is weird! It doesn't work on PAL 7800s. I should try on my NTSC one. I always thought it was only NTSC 7800s that had the problem. Of course as the cart doesn't actually fit into a 7800 without a cart extender, no-one probably noticed this before!
2) Did you notice Kampf In Asteroide-Gurtel still has "Homevision" copyright text?
I do have other carts from pirate manufacturers. Do you want me to dump them? Some of them are pretty obscure (like my Supervision "Missle 3000" [sic] cart). It could take a while.
If you've got a copy of Cart Commander I can send you a copy of my database if it helps, but it's not very specific on pirates.
Miner 2049er Vol. II
If none of these work your 7800 doesn't like 3F bankswitching. How did you dump Springer anyhow? I had to find an older 7800 to dump that PAL Miner 2049er I had.
2. I did notice the Homevision text too and found it interesting. There are seem to be a lot of Homevision roms out there pirated by other companies.
I have a feeling dumping your other pirate carts might lead to at least one or two roms being switched. Give Rom a few days to shift through the truckload you just gave him, lol.