PIC32MX420F032H
Device ID:	0x00042000 (270336)
devid (region=0xffffffff-0xffffffff idmask=0xff000 id=0x942053)

	0xFF000			 <-- hex
	000011111111000000000000 <-- binary
OR
	0x942053		 <-- hex
	100101000010000001010011 <-- binary
=============================================

	000001000010000000000000 <-- binary

42000 <-- hex
add 3 0's before results in 0x00042000


PIC32MX220F032B
devid (region=0xffffffff-0xffffffff idmask=0xfffffff id=0x4a00053)
0x04a00053