Using QEMU it is straightforward to select different ROMs either as the main ROM or as a peripheral ROM (i.e. video or network card). Is there equivalent functionality in VirtualBox?
I am aware of the EFI check box, which selects OVMF, but I wish to try different versions of OVMF or coreboot without recompiling VirtualBox (so that the other virtual machines can keep running).
I know that I will not be able to do this from the GUI, but as the GUI is frequently used, I would need to be aware of any issues.