STANDARD MICROSYSTEMS CORPORATION
ARCNET T250
|
NIC Type |
ARCnet |
|
Transfer Rate |
2.5Mbps |
|
Data Bus |
Toshiba laptop internal expansion slot (T5100, T3100, T3100e, T1600, T1200, and T1100Plus) |
|
Topology |
Star |
|
Wiring Type |
Unshielded twisted pair |
|
Boot ROM |
Not 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) |
||||||||
|
BASE MEMORY ADDRESS |
|||||
|
Address |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
SW1/5 |
|
C0000h |
On |
On |
On |
On |
On |
|
C0800h |
On |
On |
On |
On |
Off |
|
C1000h |
On |
On |
On |
Off |
On |
|
C1800h |
On |
On |
On |
Off |
Off |
|
C4000h |
On |
On |
Off |
On |
On |
|
C4800h |
On |
On |
Off |
On |
Off |
|
C5000h |
On |
On |
Off |
Off |
On |
|
C5800h |
On |
On |
Off |
Off |
Off |
|
CC000h |
On |
Off |
On |
On |
On |
|
CC800h |
On |
Off |
On |
On |
Off |
|
CD000h |
On |
Off |
On |
Off |
On |
|
CD800h |
On |
Off |
On |
Off |
Off |
|
D0000h |
On |
Off |
Off |
On |
On |
|
D0800h |
On |
Off |
Off |
On |
Off |
|
D1000h |
On |
Off |
Off |
Off |
On |
|
D1800h |
On |
Off |
Off |
Off |
Off |
|
D4000h |
Off |
On |
On |
On |
On |
|
D4800h |
Off |
On |
On |
On |
Off |
|
D5000h |
Off |
On |
On |
Off |
On |
|
D5800h |
Off |
On |
On |
Off |
Off |
|
D8000h |
Off |
On |
Off |
On |
On |
|
D8800h |
Off |
On |
Off |
On |
Off |
|
D9000h |
Off |
On |
Off |
Off |
On |
|
D9800h |
Off |
On |
Off |
Off |
Off |
|
DC000h |
Off |
Off |
On |
On |
On |
|
DC800h |
Off |
Off |
On |
On |
Off |
|
DD000h |
Off |
Off |
On |
Off |
On |
|
DD800h |
Off |
Off |
On |
Off |
Off |
|
E0000h |
Off |
Off |
Off |
On |
On |
|
E0800h |
Off |
Off |
Off |
On |
Off |
|
E1000h |
Off |
Off |
Off |
Off |
On |
|
E1800h |
Off |
Off |
Off |
Off |
Off |
|
I/O BASE ADDRESS |
||||
|
Address |
SW1/6 |
SW1/7 |
SW1/8 |
|
|
|
260h |
On |
On |
On |
|
|
290h |
Off |
On |
On |
|
|
2E0h |
On |
Off |
On |
|
|
2F0h |
Off |
Off |
On |
|
» |
300h |
On |
On |
Off |
|
|
350h |
Off |
On |
Off |
|
|
380h |
On |
Off |
Off |
|
|
3E0h |
Off |
Off |
Off |
|
STANDBY MODE |
|
|
Mode |
SW3 |
|
Power is supplied to the card |
On (position 1) |
|
Power is not supplied to the card |
Off (position 0) |
|
INTERRUPT REQUEST |
|||
|
IRQ |
JP1A |
JP1B |
JP1C |
|
2 |
Closed |
Open |
Open |
|
3 |
Open |
Closed |
Open |
|
5 |
Open |
Open |
Closed |
|
RESPONSE & RECONFIGURATION TIMEOUTS |
||||||
|
Response Time |
Idle Time |
Reconfig. Time |
JP2A |
JP2B |
JP2C |
|
|
» |
78µs |
86µs |
840ms |
Closed |
Closed |
Open |
|
|
285µs |
316µs |
1680ms |
Closed |
Open |
Open |
|
|
563µs |
624µs |
1680ms |
Open |
Closed |
Open |
|
|
1190µs |
1237µs |
1680ms |
Open |
Open |
Open |