Intel 386 User Manual
Page 682
Index-3
INDEX
D
Deassert, defined,
1-4
Decoding techniques, I/O address,
4-6
Design considerations
clock and power management unit,
8-11
input/output ports,
16-10
interrupt control unit,
9-29
–
9-30
JTAG test-logic unit,
18-14
refresh control unit,
15-11
synchronous serial I/O unit,
13-25
Device configuration,
5-1
–
5-37
procedure,
5-28
register addresses,
4-19
,
D-5
worksheets,
5-34
–
5-37
DMA controller,
12-1
–
12-61
block diagram,
12-2
configuring,
5-3
departures from PC/AT architecture,
B-1
–
B-3
DMACLR command,
12-50
DMACLRBP command,
12-50
DMACLRMSK command,
12-50
DMACLRTC command,
12-50
interrupts,
12-26
–
12-27
operation,
12-5
–
12-27
8237A compatibility,
12-27
basic refresh cycle,
15-5
buffer-transfer modes,
12-12
bus control arbitration,
12-9
bus cycle options for data transfers,
12-5
–
12-8
cascade mode,
12-25
–
12-26
changing priority of DMA channel and
external bus requests,
12-10
data-transfer modes
block,
12-18
–
12-20
demand,
12-21
–
12-24
single,
12-14
–
12-17
DMA transfers,
12-5
ending DMA transfers,
12-10
starting DMA transfers,
12-9
overview,
12-1
–
12-4
programming,
12-28
–
12-51
address and byte count registers,
12-33
channel registers,
12-33
considerations,
12-50
DMA0BYCn, 12-33, D-24
DMA0REQn, 12-33, D-24
DMA0TARn, 12-33, D-24
DMA1BYCn, 12-33, D-24
DMA1REQn, 12-33, D-24
DMA1TARn, 12-33, D-24
DMABSR register,
12-46
DMACFG,
5-6
,
12-32
,
D-14
DMACFG register,
12-32
DMACHR,
12-47
,
D-15
DMACHR register,
12-47
DMACMD1,
12-35
,
D-16
DMACMD1 register,
12-35
DMACMD2,
12-37
,
D-17
DMACMD2 register,
12-37
DMAGRPMSK,
12-45
,
D-18
DMAIEN,
12-48
,
D-19
DMAIEN register,
12-48
DMAIS,
12-49
,
D-20
DMAIS register,
12-49
DMAMOD1,
12-39
,
D-21
DMAMOD1 register,
12-38
DMAMOD2,
12-41
,
D-22
DMAMOD2 register,
12-40
–
12-41
DMAMSK,
12-44
,
D-23
DMAOVFE register,
12-34
DMASRR,
12-43
,
D-26
DMASRR register,
12-42
,
12-43
DMASTS,
12-36
,
D-27
DMASTS register,
12-36
PINCFG register,
12-28
,
12-31
register addresses,
4-15
,
D-1
registers,
12-28
signals,
12-4
using with external devices,
5-3
Documents, related,
1-5
DOS Address, defined,
1-4