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926 Index


SVC (supervisor call) instruction, 105

Switch 17, 78-89

bus, 333-341, 346
control-secondary-memory, 89
control-terminal, 89
processor-control, 89
processor-memory, 88

SYMBOL, 78, 486, 489-507
SYMBOL IIR, 502-504
Synchronization, 235-237

in C.mmp, 361-362
semaphore, 236
in System/370, 846-847
test and set, 236

System/360 (see IBM System/360)
System/370 (see IBM System/370)


TAD (2's complement add) instruction, 27, 115
Tag, 100, 244

in System/360 Model 91, 298-302

Tandem, 336, 346, 445-447, 470-485
TARP (test and repair processor), 449-453
Technology dimensions, 62-65
Teletype, 42
Telex, 42
TI 99/4, 547
TI 9900, 585-586, 611
TI ASC, 91, 690-693, 753-762
Time-of-day (TOD) clock, 844-846
Timesharing, 227

TLM (trouble locating manual), 462
TMB (triple-modular-redundant) computers, 448
TMS1000, 16, 548, 581-584, 587-601
TOPS (thermoelectric outer planet spacecraft) 449, 457
Transducer, 17
Transistor, 10
Translation-lookaside buffer, 839
Trap, 234

in PDP-11, 658

TRS-80, 547
True complement, 69
T/TAL language, 473
2's complement, 30, 69, 199-201
TWX, 42
TYMNET, 389, 395-396


Unibus, 660-661, 668, 778, 780-782
U.S. Steel COBOL data, 56, 58
Univac:

1103, 41
1103A, 75
1107, 75
1108, 75, 240

Unsigned magnitude, 29


Variable length string, 490, 493, 498
VAX-11/780, 6,68, 78,243,682,683, 716-729, 766, 778

Vector-move processors, 91
Virtual address, 4, 70
Virtual machine, 52, 227, 251, 258, 839
Virtual memory, 227-228, 233-243

address space, 228
address translation, 229
capability, 233
demand paging, 233
external fragmentation, 233, 253
FIFO (first in, first out), 233
internal fragmentation, 233, 254
LRU (least recently used), 233
name space, 228
prefetching, 233
protection and relocation register, 240

Virtual storage system, 370, 837-840


Watchdog timer, 441, 445
Wheel of reincarnation, 7, 34, 81-83

for input/output, 7

Williams tubes, 4, 107
Word length, 67-68


Xor, in ISP, 30


Zilog:

Z-80, 610
Z-8000, 95, 610

ZUSE, 38


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