fpgadeveloper/Microblaze-16x2-LCD-Driver — pull request #1 by Spenser309 (2012-03-22 22:43:37+00:00)
Title: Found a bug, it's minor but it prevents the ethernet controller from being used concurrently.

The RS pin in the ucf file is LVCMOS33; however, the CPLD is expecting a LVCMOS25. This is minor but it prevents mapping if any other signals in the bank which includes the RS pin are used, IE: ll_temac.