rkujawa/9tcfg — pull request #2 by rafgc (2013-03-16 23:38:19+00:00)
Title: Update cfgreg.c

Using AND operation to set unused bits to 0 (possibility of reading random data at bits 3-0 of l0, l1, l2, l3 - those pins are not tied to cpld, so they can hold previously writted/read data).