IBM XT 5160

system board
connectors 1-32
system board,
256/640K 1-13
system board,
64/256K 1-12, 1-13
system clock (CLK),
I/O
channel 1-21
system memory map 1-8
system request key 4-42
system reset 4-11, 4-42
system
ROM BIOS 5-11,
5-111
system timer block
diagram 1-10
system timers 1
~ 10
terminal count
(T/C), I/O
channel 1-23
TEST 6-14
timer/ counters 1-10
timers, system 1-10
tone generation,
speaker 1-10
typematic delay 4-24
typematic keys 4-4, 4-24
typematic rate 4-24
UK English keyboar.d 4-17, "
4-49
US English
keyboa~d 4~ 18',
4-50
vectors with special
meanings 5-5
WAIT 6-23
write command (-lOW),
I/O
channel 1-22
write memory command
(-MEMW) 1-23
XCHG 6-8
XL AT 6-9
XOR 6-15
INumerics I
8088, (see also Intel 8088
microprocessor) 1-4
8254-2 1-10
8255A bit m~p 1-27
Index-g