Please see thread in PCs and Clones section here:
http://www.vcfed.org/forum/showthread.php?67579-Calling-All-Hands-Yamaha-C1-Laptop-Expansion-Slot
http://www.vcfed.org/forum/showthread.php?67579-Calling-All-Hands-Yamaha-C1-Laptop-Expansion-Slot