The Art of Assembly Language

O

objects

16-bit, 22

allocating in contiguous memory, 166

binding of attributes to, 317

constructing from bytes in memory, 147

dynamic, 318

lifetime of, 318

static, 318

octal (base-8) numbering system, 13, 18

conversion, 18

representation, 10, 18

odd addresses, 141

odd banks of memory, 140

odd numbers , 26

offline storage subsystems, 298

old instructions, legacy support for, 261

one-way set associative cache, 303

online memory subsystems, 298

opcode, 228, 262

80 —86 add, 281

assigning to instructions, 266

expansion (Y86), 272

illegal, 278

length, 263

prefix bytes, 280

undefined, 278

operand signs, 87

operating system

file managers, 374

file systems, 374

and memory allocation, 325

protected-mode, 346

research and file size , 383

operation

bit-by-bit, 47

on bits, 46

bitwise, 47

codes, 228

floating-point, 80

inhibition, 196

involving infinity, 79

left shift, 52

logical

AND, 46

complement for Boolean, 193

exclusive-OR (XOR), 46

NOT, 46, 47

OR, 46

XOR, 46

memory read, 138

memory write, 138

NAND, 196

NOR, 196

NOT, 46, 47, 192, 196

OR, 46, 192

right shift, 53

rounding, 77

serialized, 149

shift left, 52

shift right, 53

superscalar, 251

system clock, 150

tape read/write, 362

two's complement negation, 25

unstable flip-flop, 221

on the USB, polling, 394

XOR, 46

operator

Boolean, 192

delete memory deallocation, 321

dispose memory deallocation, 321

dot, 183

new memory allocation, 321

precedence of Boolean, 194

right associative, 194

Visual Basic bitwise, 48

optical disks, 298

optical drives , 359-60

optical storage, 360

optimizing

Boolean functions, 204

cache usage, 305

opto-mechanical mice, 396

OR, 46

gate from NAND gates, 214

instruction (Y86), 269, 276

operation, 46, 192

truth table, 46, 195, 204

order of evaluation in floating-point computation, 68

ordering, 175, 178

ordinal data types, 171

organization

big endian versus little endian, 144

machine, 3

memory, 133, 137, 316

outboard synthesizer modules, 403

out-of-order execution, 253

output, 329

under USB, 395

output port, 330, 331

D flip-flops as, 333

latch devices as, 330

S/R flip-flops as, 333

typical, 330

write-only, 331

overflow (floating-point exception), 80

overlapping

instruction execution, 241

pipelining, 243

strings, 116