THOMAS-CONRAD CORPORATION
TC6245-OTP(ORDINARY TWISTED PAIR)
|
NIC Type |
ARCnet |
|
Transfer Rate |
2.5Mbps |
|
Data Bus |
16-bit ISA |
|
Topology |
Star Linear Bus |
|
Wiring Type |
Shielded twisted pair Unshielded twisted pair |
|
Boot ROM |
Available |
|
NODE ADDRESS | ||||||||
|
Node |
SW2/1 |
SW2/2 |
SW2/3 |
SW2/4 |
SW2/5 |
SW2/6 |
SW2/7 |
SW2/8 |
|
0 |
- |
- |
- |
- |
- |
- |
- |
- |
|
1 |
Off |
On |
On |
On |
On |
On |
On |
On |
|
2 |
On |
Off |
On |
On |
On |
On |
On |
On |
|
3 |
Off |
Off |
On |
On |
On |
On |
On |
On |
|
4 |
On |
On |
Off |
On |
On |
On |
On |
On |
|
251 |
Off |
Off |
On |
Off |
Off |
Off |
Off |
Off |
|
252 |
On |
On |
Off |
Off |
Off |
Off |
Off |
Off |
|
253 |
Off |
On |
Off |
Off |
Off |
Off |
Off |
Off |
|
254 |
On |
Off |
Off |
Off |
Off |
Off |
Off |
Off |
|
255 |
Off |
Off |
Off |
Off |
Off |
Off |
Off |
Off |
|
Note:Node address 0 is used for messaging between nodes and must not be used. A total of 255 node address settings are available. The switches are a binary representation of the decimal node addresses. Switch 1 is the Least Significant Bit and switch 8 is the Most Significant Bit. The switches have the following decimal values: switch 1=1, 2=2, 3=4, 4=8, 5=16, 6=32, 7=64, 8=128. Turn off the switches and add the values of the off switches to obtain the correct node address. (On=0, off=1) | ||||||||
|
RESPONSE AND RECONFIGURATION TIMEOUT | ||||||
|
Network Cable Length |
JP12 |
JP13 |
ResponseTime ( m |
Reconfiguration Time (mS) | ||
|
Less than 20,000 feet |
Open |
Open |
74.7 |
840 | ||
|
more than 20,000 feet |
Closed |
Open |
283.4 |
1680 | ||
|
more than 20,000 feet |
Open |
Closed |
561.8 |
1680 | ||
|
more than 20,000 feet |
Closed |
Closed |
1118.6 |
1680 | ||
|
Note : All NICs on the network must have these two jumpers set the same. | ||||||
|
BASE MEMORY ADDRESS | |||||||
|
Memory Address |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
SW1/5 |
SW1/6 | |
|
D000h |
Off |
Off |
On |
Off |
On |
On | |
|
C000h |
Off |
Off |
On |
On |
On |
On | |
|
C400h |
Off |
Off |
On |
On |
On |
Off | |
|
C800h |
Off |
Off |
On |
On |
Off |
On | |
|
CC00h |
Off |
Off |
On |
On |
Off |
Off | |
|
D400h |
Off |
Off |
On |
Off |
On |
Off | |
|
D800h |
Off |
Off |
On |
Off |
Off |
On | |
|
DC00h |
Off |
Off |
On |
Off |
Off |
Off | |
|
INTERRUPT REQUEST | ||||||||||||
|
IRQ |
JP1 |
JP2 |
JP3 |
JP4 |
JP5 |
JP20 |
JP21 |
JP22 |
JP23 |
JP24 |
JP25 | |
|
9 |
Open |
Open |
Open |
Open |
Open |
Open |
Open |
Open |
Open |
Open |
Closed | |
|
3 |
Open |
Open |
Open |
Open |
Open |
Closed |
Open |
Open |
Open |
Open |
Open | |
|
4 |
Open |
Open |
Open |
Open |
Open |
Open |
Closed |
Open |
Open |
Open |
Open | |
|
5 |
Open |
Open |
Open |
Open |
Open |
Open |
Open |
Closed |
Open |
Open |
Open | |
|
6 |
Open |
Open |
Open |
Open |
Open |
Open |
Open |
Open |
Closed |
Open |
Open | |
|
7 |
Open |
Open |
Open |
Open |
Open |
Open |
Open |
Open |
Open |
Closed |
Open | |
|
10 |
Open |
Open |
Open |
Open |
Closed |
Open |
Open |
Open |
Open |
Open |
Open | |
|
11 |
Open |
Open |
Open |
Closed |
Open |
Open |
Open |
Open |
Open |
Open |
Open | |
|
13 |
Open |
Open |
Closed |
Open |
Open |
Open |
Open |
Open |
Open |
Open |
Open | |
|
14 |
Closed |
Open |
Open |
Open |
Open |
Open |
Open |
Open |
Open |
Open |
Open | |
|
15 |
Open |
Closed |
Open |
Open |
Open |
Open |
Open |
Open |
Open |
Open |
Open | |
|
WAIT STATE | ||
|
Setting |
SW1/7 | |
|
Zero wait states disabled |
On | |
|
Zero wait states enabled |
Off | |
|
COMPATABILITY MODE | ||
|
Mode |
SW1/8 | |
|
Enhanced mode |
On | |
|
Compatible mode |
Off | |
|
Note: Enhanced mode optimizes performance and minimizes conflicts of your hardware, by using a Thomas-Conrad
| ||
|
BLOCK DECODE | ||
|
Size |
JP7 | |
|
16K memory block decode |
Pins 1 & 2 Closed | |
|
128K memory block decode |
Pins 2 & 3 Closed | |
|
Note:A 16-bit VGA adapter typically decodes base memory in 128K blocks. If you are installing the NIC in a system with such a card, you may need to set the NIC block decode size to 128K. If you set the block decode size to 128K then all other adapters in the system must also utilize 128K decode. | ||
|
I/O BASE ADDRESS | |||||||||
|
I/O |
SW3/1 |
SW3/2 |
SW3/3 |
SW3/4 |
SW3/5 |
SW3/6 |
SW3/7 |
SW3/8 | |
|
2E0h |
On |
On |
Off |
On |
Off |
Off |
Off |
On | |
|
2F0h |
On |
On |
Off |
On |
Off |
Off |
Off |
Off | |
|
300h |
On |
On |
Off |
Off |
On |
On |
On |
On | |
|
310h |
On |
On |
Off |
Off |
On |
On |
On |
Off | |
|
320h |
On |
On |
Off |
Off |
On |
On |
Off |
On | |
|
330h |
On |
On |
Off |
Off |
On |
On |
Off |
Off | |
|
340h |
On |
On |
Off |
Off |
On |
Off |
On |
On | |
|
350h |
On |
On |
Off |
Off |
On |
Off |
On |
Off | |
|
360h |
On |
On |
Off |
Off |
On |
Off |
Off |
On | |
|
370h |
On |
On |
Off |
Off |
On |
Off |
Off |
Off | |
|
380h |
On |
On |
Off |
Off |
Off |
On |
On |
On | |
|
390h |
On |
On |
Off |
Off |
Off |
On |
On |
Off | |
|
3A0h |
On |
On |
Off |
Off |
Off |
On |
Off |
On | |
|
3B0h |
On |
On |
Off |
Off |
Off |
On |
Off |
Off | |
|
3C0h |
On |
On |
Off |
Off |
Off |
Off |
On |
On | |
|
3D0h |
On |
On |
Off |
Off |
Off |
Off |
On |
Off | |
|
3E0h |
On |
On |
Off |
Off |
Off |
Off |
Off |
On | |
|
3F0h |
On |
On |
Off |
Off |
Off |
Off |
Off |
Off | |
|
Note: When operating in enhanced mode it is not necessary to set the I/O address. | |||||||||
|
DIAGNOSTIC LED(S) | |||
|
LED |
Color |
Status |
Condition |
|
1 |
Red |
On |
Data is being transmitted or receiving |
|
1 |
Green |
On |
Card is not configured correctly |
|
2 |
Green |
Blinking |
Card is configured correctly and is connected to network |
|
2 |
N/A |
Off |
Card is defective or not connected to network |
|
MISCELLANEOUS NOTES |
|
Note:Not all components are as shown on later card revisions. |