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INDEX
maskable, 2-43
masking, 8-3, 8-12, 8-16
priority-based, 8-17
multiplexed, 8-7
nesting, 8-4
NMI, 2-42
nonmaskable, 2-45
overview, 8-1, 8-2
priority, 2-46–2-49, 8-3
default, 8-3
resolution, 8-5, 8-6
processing, 2-39–2-42
reserved, 2-39
response time, 2-46
selecting edge- or level-triggering, 8-12
slave mode sources, 8-25
software, 2-45
timer interrupts, 9-16
types, 8-9, 8-26, 8-27
See also Exceptions, Interrupt Control Unit
INTn instruction, 2-45
Invalid opcode trap (Type 6 exception), 2-44
IRET instruction, 2-41
L
Latency‚ See Bus hold protocol‚ Direct Memory
Access (DMA) Unit‚ Interrupts
LEAVE instruction, A-7
Local bus, 3-1, 3-39, 10-11
Long integer, defined, 10-7
Long real, defined, 10-7
M
Manuals, online, 1-5
Math coprocessing, 10-1
hardware support, 10-1
overview, 10-1
Memory
addressing, 2-28–2-36
operands, 2-28
reserved locations, 2-15
Memory devices‚ interfacing with, 3-6–3-7
Memory segments, 2-8
accessing, 2-5, 2-10, 2-11, 2-13
address
base value, 2-10, 2-11, 2-12
Effective Address (EA), 2-13
logical, 2-10, 2-12
offset value, 2-10, 2-13
overriding, 2-11, 2-13
physical, 2-3, 2-10, 2-12
and dynamic code relocation, 2-13
Memory space, 3-1–3-6
N
Normally not-ready signal‚ See Ready
Normally ready signal‚ See Ready
Numerics coprocessor fault (Type 16 exception),
2-44, 10-13
O
ONCE mode, 11-1
One-shot, code example, 9-17–9-23
Ordinal, defined, 2-37
Oscillator
external
selecting crystal, 5-5
using canned, 5-6
internal crystal, 5-1–5-10
operation, 5-2–5-3
selecting C
1
and L
1
components, 5-3–
5-6
OUTS instruction, A-2
Overflow Flag (OF), 2-7, 2-9, 2-44
P
Packed BCD, defined, 2-37
Packed decimal, defined, 10-7
Parity Flag (PF), 2-7, 2-9
PCB Relocation Register, 4-1, 4-3, 4-6
and math coprocessing, 10-2
Peripheral Control Block (PCB), 4-1
accessing, 4-4
and DMA Unit, 10-3
and F-Bus operation, 4-5
base address, 4-6–4-7
bus cycles, 4-4
READY signals, 4-4
reserved locations, 4-6
wait states, 4-4
Peripheral control registers, 4-1, 4-6
Pointer, defined, 2-37
Poll register, 8-9, 8-19, 8-20
Poll Status register, 8-9, 8-19, 8-20, 8-21