Specifications

Index
interrupt on terminal count .................................... 11-16
interrupt request register (IRR)
................................. 12-8
interrupt restart
................................................ 1-13
interrupts
..................................................1-11, 3-8
8087
........................................................ 7-11
application example
.......................................... 4-3
input requests
................................................ 3-8
status
...................................................... 12-29
triggering
.................................................. 12-27
INTRQ*
....................................... 1-11, 3-4, 3-10, 3-13
I/O
addressing
.................................................. 2-22
map, STD DOS / STD ROM
................................ 2-23
port addresses and interrupts (8259A)
.......................12-21
port assignments
............................................ 8-17
I/O addressing
.................................................. 1-6
IOEXP
........................................................ 5-16
IORQ*
........................................................ 5-15
-J-
J1 .............................................................. B-9
J2
.............................................................. B-9
J3
.............................................................. B-9
jumper configurations
non-DOS factory default
............................... 5-9, A-55
STD DOS factory default
...............................5-5, A-56
STD DOS with 640K RAM
.................................. 5-7
jumper descriptions
............................................. A-1
-L-
level-triggered interrupts ....................................... 3-10
level-triggered mode
.......................................... 12-28
line control register (LCR)
..................................... 8-21
line status register (LSR)
....................................... 8-26
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