The default MAME UI is minimal. To browse your DL1425BIN Top collection beautifully, use a frontend:
Type the command exactly as you have it: mame dl1425bin top
mame dl1425bin top
What should happen:
A full 0.250+ MAME set, including CHDs (Compressed Hunks of Data—hard drive images for games like Killer Instinct or Dance Dance Revolution), exceeds 600 GB. A "Top" set, like the DL1425BIN Top, usually ranges between 8 GB and 30 GB. It focuses on the 200–500 most iconic arcade games. The default MAME UI is minimal
