Date:  January 8, 1987 
Number:  166 
 
Title:  Support of RLL and ESDI Hard Disk Controllers 
 

 Inquiries have been made regarding the support of RLL and ESDI 
hard disk controllers for IBM PC/AT or IBM PC/XT* or compatible 
machines.  These controllers make it possible to write to disks 
at a higher density.  The current disk driver will not support 
either the RLL or the ESDI hard disk controllers. 
 
 
* IBM AT and IBM XT are registered trademarks with International 
Business Machines.