TIARA COMPUTER SYSTEMS, INC.
LANCARD/A*PC TP
|
NIC Type |
ARCnet |
|
Network Transfer Rate |
2.5Mbps |
|
Data Bus |
8-bit ISA |
|
Topology |
Ring/Daisy Chain/Star |
|
Wiring Type |
Unshielded twisted pair |
|
Boot ROM |
Available |
|
CONNECTIONS |
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|
Function |
Label |
Function |
Label |
|
Unshielded twisted pair port |
CN1 |
Unshielded twisted pair port |
CN2 |
|
USER CONFIGURABLE SETTINGS |
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|
Function |
Label |
Position |
|
|
» |
Enhanced mode diagnostic disabled |
JP7 |
Pins 1 & 2 closed |
|
|
Enhanced mode diagnostic enabled |
JP7 |
Pins 2 & 3 closed |
|
» |
Terminator Resistor disabled |
JP8 |
Pins 2 & 3 closed |
|
|
Terminator Resistor enabled |
JP8 |
Pins 1 & 2 closed |
|
BASE I/O ADDRESS SELECTION |
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|
Address |
SW1/1 |
SW1/2 |
SW1/3 |
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|
260h-26Fh |
Off |
Off |
Off |
|
|
290h-29Fh |
Off |
Off |
On |
|
|
2B0h-2BFh |
Off |
On |
On |
|
» |
2E0h-2EFh |
Off |
On |
Off |
|
|
300h-30Fh |
On |
Off |
Off |
|
|
350h-35Fh |
On |
Off |
On |
|
|
380h-38Fh |
On |
On |
Off |
|
|
3E0h-3EFh |
On |
On |
On |
|
INTERRUPT SELECTION |
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|
IRQ |
JP1 |
JP2 |
JP3 |
JP4 |
JP5 |
JP6 |
|
|
» |
2 |
Closed |
Open |
Open |
Open |
Open |
Open |
|
|
3 |
Open |
Closed |
Open |
Open |
Open |
Open |
|
|
4 |
Open |
Open |
Closed |
Open |
Open |
Open |
|
|
5 |
Open |
Open |
Open |
Closed |
Open |
Open |
|
|
6 |
Open |
Open |
Open |
Open |
Closed |
Open |
|
|
7 |
Open |
Open |
Open |
Open |
Open |
Closed |
|
NODE ADDRESS |
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|
Node |
SW2/1 |
SW2/2 |
SW2/3 |
SW2/4 |
SW2/5 |
SW2/6 |
SW2/7 |
SW2/8 |
|
1 |
Off |
Off |
Off |
Off |
Off |
Off |
Off |
On |
|
2 |
Off |
Off |
Off |
Off |
Off |
Off |
On |
Off |
|
3 |
Off |
Off |
Off |
Off |
Off |
Off |
On |
On |
|
4 |
Off |
Off |
Off |
Off |
Off |
On |
Off |
Off |
|
5 |
Off |
Off |
Off |
Off |
Off |
On |
Off |
On |
|
251 |
On |
On |
On |
On |
On |
Off |
On |
On |
|
252 |
On |
On |
On |
On |
On |
On |
Off |
Off |
|
253 |
On |
On |
On |
On |
On |
On |
Off |
On |
|
254 |
On |
On |
On |
On |
On |
On |
On |
Off |
|
255 |
On |
On |
On |
On |
On |
On |
On |
On |
Note: A total of 255 node address settings are available. The switches are a binary representation of the decimal node addresses. Switch 8 is the Least Significant Bit and switch 1 is the Most Significant Bit. The switches have the following decimal values: switch 8=1, 7=2, 6=4, 5=8, 4=16, 3=32, 2=64, 1=128. Turn on the switches and add the values of the on switches to obtain the correct node address. (On=1, Off=0) |
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|
ROM ADDRESS SELECTION |
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|
Address |
SW1/4 |
SW1/5 |
SW1/6 |
|
|
|
C0000h-C3FFFh |
Off |
Off |
Off |
|
|
C4000h-C7FFFh |
Off |
Off |
On |
|
|
CC000h-CFFFFh |
Off |
On |
On |
|
» |
D0000h-D3FFFh |
On |
Off |
Off |
|
|
D4000h-D7FFFh |
On |
Off |
On |
|
|
D8000h-DBFFFh |
On |
On |
Off |
|
|
DC000h-DFFFFh |
On |
On |
On |
|
|
E0000h-E3FFFh |
Off |
On |
Off |
|
CABLE LENGTH AND RESPONSE/RECONFIGURATION TIMEOUTS |
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|
Maximum Length |
Response Time |
Reconfiguration Time |
SW1/7 |
SW1/8 |
|
|
» |
4.8 miles |
74.4µs |
840ms |
On |
On |
|
|
21.0 miles |
283.4µs |
1680ms |
On |
Off |
|
|
42.5 miles |
561.8µs |
1680ms |
Off |
On |
|
|
85.6 miles |
1118.6µs |
1680ms |
Off |
Off |
Note: Maximum length is the distance between the two farthest cards on the network. All cards on a segment must have this option set the same. |
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DIAGNOSTIC LED(S) |
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|
LED |
Color |
Status |
Condition |
|
LED1 |
Red |
On |
Data is being received |
|
LED1 |
Red |
Blinking |
Reconfiguring network |
|
LED1 |
Red |
Off |
Data is not being received |
|
LED2 |
Green |
On |
Data is being transmitted |
|
LED2 |
Green |
Blinking |
Reconfiguring network |
|
LED2 |
Green |
Off |
Data is not being transmitted |
|
Note: If blinking persists it indicates a network problem. |
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TECHNICAL NOTE |
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Note: The last node of the chain needs to be terminated. |