What is a PRG1 rom code?

[Prozak]

I've seen some roms labeled with PRG1 and I was wondering what this code was as it's not listed in the sticky thread, thanks.

[Zach]

PRG Roms are Roms for the same game that have differences. Think of them like version releases.

[azoreseuropa]

I've seen some roms labeled with PRG1 and I was wondering what this code was as it's not listed in the sticky thread, thanks.

Okay I can help you understand it better. The PRG ROM loads into memory is broken up into two separate 16K banks or something like that, understand ? :)