Changes

RTC

4 bytes added, 2 April

/* RTC Registers */

7 VRT Valid RAM and Time (1=Okay, 0=Battery Low) (R)

6-0 0 Reserved (zero)

0Eh..3Fh battery backed RAM (HD146818, DS1287A, and other~~/newer~~ chips)

40h..7Fh battery backed RAM (DS12887A, newer chip variants only)

80h..FFh reserved

13,154

edits