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INDEX
synchronization, 10-23
transfer count, 10-24–10-25
programming, pointers, 10-15–10-19
requests, 10-3
external, 10-4
internal, 10-6–10-7
multiplexer, 10-11
SCU, 10-7
software, 10-7
Timer 2, 10-6
selecting source, 10-11, 10-22
serial transfer example, 10-30–10-38
synchronization
destination-synchronized, 10-5
selecting, 10-23
source-synchronized, 10-5
unsynchronized, 10-7
timed DMA transfer example, 10-30–10-38
transfers, 10-1–10-15
count, 10-7
programming, 10-24–10-25
direction, 10-3
rates, 10-29
size, 10-3
selecting, 10-19
suspending, 10-7, 10-8, 10-27
terminating, 10-7, 10-8
Direction Flag (DF), 2-7, 2-9, 2-23
Display, defined, A-2
Divide Error trap (Type 0 exception), 2-42
DMA Control Register (DxCON), 10-20
DMA Destination Pointer Register, 10-18, 10-19
DMA HALT Register (DMAHALT), 10-28
DMA Source Pointer Register, 10-16, 10-17
Documents, related, 1-3
DRAM controllers
and wait state control, 7-5
clocked, 7-5
design guidelines, 7-5
unclocked, 7-5
See also Refresh Control Unit
DS register, 2-1, 2-5, 2-6, 2-13, 2-30, 2-34, 2-43
DX register, 2-1, 2-5, 2-36, 3-6
E
Effective Address (EA), 2-13
calculation, 2-28
Index-4
Emulation mode, 15-1
End-of-Interrupt (EOI) command, 8-32
and polling, 8-35
automatic EOI, 8-13
issuing in a cascaded system, 8-17
non-specific EOI, 8-13, 8-33
rotate in automatic EOI mode, 8-33
rotate on specific EOI, 8-33
set priority, 8-33
specific EOI, 8-13, 8-33
ENTER instruction, A-2
ES register, 2-1, 2-5, 2-6, 2-13, 2-30, 2-34
Escape opcode fault (Type 7 exception), 2-43, 14-1
Examples, code‚ See Software
Exceptions, 2-42–2-44
priority, 2-46–2-49
Execution Unit (EU), 2-1, 2-2
Extra segment, 2-5
F
Fault exceptions, 2-42
FaxBack service, 1-4
F-Bus
and PCB, 4-5
operation, 4-5
Flags‚ See Processor Status Word (PSW)
Floating Point, defined, 2-37
Fully nested mode‚ See Interrupts
H
HALT bus cycle‚ See Bus cycles
HOLD/HLDA protocol‚ See Bus hold protocol
Hypertext manuals, obtaining from BBS, 1-6
I
I/O devices
interfacing with, 3-6–3-7
memory-mapped, 3-6
I/O ports, 13-1–13-12
addressing, 2-36
bidirectional, 13-1, 13-7
configuration example, 13-12
initializing, 13-11
open-drain bidirectional, 13-3
output-only, 13-3
overview, 13-1
port 1, 13-6
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