Would it be possible to have in a future BIOS so that there can be 4 ide device?
I have seen IDE cables (not 80 wires) for 4 devices. If a cable exists there must be some system out there that can use it. I don't think there has to be any electrical changes (maybe a resistor). It also makes up for the lack of a additional IDE channel, unless you want to make a hack similar to the floppy one. It isn't like we do anything disk intensive with these.
pic of cable: http://www.wiretek.com.cn/images/fs111.jpg
page with cable: http://www.wiretek.com.cn/interal.htm
go half way down the HTML page for pic of cable
I was thinking this would be good so you can have a:
2.5 mm hard drive (with adaptor)
LS-120/240 for floppy ide
Ether of the following;
DVD drive for movies (I know of the DSTN LCD problem)
CD-RW for making cds