Available now, in the latest drivers download on the USB page, are an updated storage driver that supports floppy drives, while all the other drivers can be run as HDDRIVER modules (https://www.hddriver.net/en/modules.html).
Some floppy drives may not work well, or work well on a computer but not another. This is due to the polling for media change. I will try a new method of detection that won't require polling.
The HDDRIVER keyboard module makes the keyboard available before HDDRIVER loads, to select a boot letter for example. More later on the storage module.