I-Bus SBC and Floppy drives

I have an I-Bus "Shark" model PICMG[0] processor board. This board takes a Pentium 90 or 100MHz processor, has 4 SIMM slots, and has IDE and floppy controller on the card. May or may not be ten years old, and is definitely not unique enough to be on-topic. However, I also noticed something in the BIOS I've *never* seen on an x86 system, including the rest of my PICMG processors. This board supports four floppy drives, 360K 5.25" to 2.88MB 3.5". My question is, does anyone know of any other post-286 PeeCee systems that support 4 drives without a CompatiCard or CatWeasel? Doc [0] PICMG is almost unknown in the desktop world, but it's a backplane setup used in industrial and telco environments. As far as I know, it's strictly x86.