Ampro, who would go on to create the PC104 SBC motherboard standard, got their start with a cp/m computer that would mount right on a 5 1/4" floppy drive: https

Ampro, who would go on to create the PC104 SBC motherboard standard, got their start with a cp/m computer that would mount right on a 5 1/4" floppy drive: https://oldcomputers.net/ampro-little-board.html https://oldcomputers.net/ampro-little-board.html