<Actually, on the downstream side of the adapter card you are tremendously <close to an IDE interface. As I understand it, the IDE interface is <premised on the commands that are required by the WD1002-nnn controller. <zI have forgotten the exact model, but it must be near to the WD1002. Incorrect. IDE is the buslevel equivelent of the ISA16 card WD1003WA. The register format, addresses of the registers are identical, the interface is also the same save for there are only three addres bits and two selects(like chip select) where the board would take a full 10 bit address and decode it. The 1002 HOST interface gas a different address, register command structure though there are similarities wbeing both from WD. To do a IDE on kaypro you would need to do the 8<->16 bit translation and from what I have here there is not enough addresses brought out to the host adaptor plug. That means a CPU piggyback adaptor (GIDE is one case). SCSI would be easier as a cpu interface but the SCSI bios is a nightmare for the 5380 type chips. In any case adding a hard disk to kaypro requires utility software, an interface and BIOS. Going the turborom route and putting two to three 3.5" disks is easier. With 3.5" drives there is auto write portect on power down so you dont need to eject the disks and with the that would be 2.3mb of available storage plus the 360kb drive for compatability. I have one setup in such a mannor with an old IBM PS/2 drive inside the case (I treat it as 781k hard drive) and two drives on the front (3.5" and 5.25" 360k). For what I use the kaypro for that's plenty of on line storage. To do 1.44mb would require far more effort due to data rate and the fact that DMA is not available so it would be hardware mods for floppy controller and also big time bios mods. Allison