This feature is enabled using jumper JP1.
8bit ISA Floppy Disk Controller By Sergey Kiselev PCB Only
Monster ISA FDC Floppy Disk Controller Card By Sergey Kiselev PCB ONLY
ISA 8-bit Backplane DIY Kit By Sergey Kiselev (Requires Assembly)
ISA Backplane board by Sergey Kiselev
ISA Floppy Disk And Serial Controller Card DIY Kit (Requires Assembly)
