1. secure directory: http://www.ece.uah.edu/~milenka/cpe323-09S/scr
	user:pass/cpe323-09S:msp-s09
2. mailing list: cpe323@eng.uah.edu
3. lab 1: 

fixed point
8 bits, divide into 5 for whole numbers, and last 3 bits for fractions w/ powers of 2
00000.101 == 101/2^3 = 5/8 = 0.625
max value for unsigned is 31.875

floating point IEEE 754
defines single, double, and extended double precision (32,64,80 bit)
we don't use FP in microcontrollers, no HW support, b/c expensive

packed bcd: 2 digits packed into a single byte
unpacked: 1 digit per byte only using the lower nibble

class of ISA
	stack machine: push A, push B, ADD
	accumulator: LDA A, ADD B (load A into accumulator, add B to accumulator)
	general purpose arch: set of registers, feeding into ALU, and saving to an other register: ADD A, B, C

memory
	linear array locations
	byte addressable
	values stored as little endian or bit endian
		little endian: least sig byte first
		bit endian: most sig byte first

data types and sizes

instruction set
	data transfer
		load
		store
		move
		exchange
		etc
	arithmetic instructions
		add
		subtraction
		multiplication
		division
		compare
	logic
		and
		or
		xor
		not
		nor
	shift
		left
		right
		circular right
	FP
		same as arith
	control flow
		conditional branch
		unconditional branch
		(direct and indirect)

	operands can be part of instructions, in a register, or in memory

addressing modes
	immediate (part of instruction) add #3,R2
	register (in register) add R1,R2
	register indirect (in memory) add (R1),R2
	memory direct aka absolute (memory immediate?) add 0xFF00,R2
	register indirect w/ displacement: add 0x08(R1),R2

encoding
	opcode:address specifier for source op:address specifier for src/dst op: