Loading a MultiBoot ROM without a cart?

[hadess]

I have the F2A USB Linker, and I've been trying to load a number of different MultiBoot ROMs onto my GBA.

• if2a is compiled with the default option on a recent Linux system (Fedora 29, with the fixes from Build fixes #1)
• as root, I run if2a -m gbamidi_emulator.gba
• I turn on the GBA, with no cartridge inserted
• I see the Gundam background, if2a exits after saying:

Wrote SRAM (100%) Now booting gbamidi_emulator.gba...

The GBA is stuck on Doing...

I've also tested passing -H, and -B 0/-B 1 without success. Is there a way to boot those ROMs without the intermediate "USB Linker" screen on the GBA?

If there is, I can update the FAQ to include that. But I could not figure it out...

[d-a-v]

I just don't remember. Let me get my GBA out back from my drawers and try :)