User manual

Installation
9
4. Scroll through the Change Configuration window to view
all the configuration attributes of the Allied Telesyn
AT-1720 adapter card. A list of those attributes and your
choices is found in Table 1.
5. Change the configuration attributes as necessary. The
configuration software does not allow you to set adapter
card values that conflict with the rest of your system.
6. After you have completed configuring your system for the
adapter card, verify that your floppy drives are empty, and
re-boot your computer.
Table 1: Adapter Card Attributes and Choices
Attribute Choices Meaning
Interrupt request
number
IRQ 3, 4, 5, 9,
10, 11, 12 or 15
Use interrupt 3, 4, 5, 9, 10, 11, 12 or 15
to signal CPU
I/O Port
Addresses
0400h, 1400h,
2400h, 3400h,
4400h, 5400h,
6400h, 7400h
Locate I/O port at selected address
range
Boot ROM
memory address
C4000 to
DC000
Locate boot ROM start at selected
address
Disabled Disable boot ROM
AT-1720AT, BT,
or FT
Port
Selection
Twisted Pair Select 10BASE-T port
AUI (AT) Select 10BASE5 port
BNC (BT) Select 10BASE2 port
Fiber (FT) Select 10BASE-FL port
Autoselect Selects other-media port if 10BASE-T
cable not present
Twisted Pair
Type Select
100 Ω UTP/STP Select Level 3, 4 or 5 10BASE-T cable
150 Ω STP Select IBM type 1 10BASE-T cable