ORCHID TECHNOLOGY
PCNET (REV. D)
NIC Type | Unidentified |
Network Transfer Rate | Unidentified |
Data Bus | 8-bit ISA |
Topology | Linear Bus |
Wiring Type | RG-11A/U 75ohm coaxial RG-59B/U 75ohm coaxial |
Boot ROM | Available |
CONNECTIONS | |
Function | Label |
RG-11A/U or RG-59B/U 75ohm coaxial connector | CN1 |
USER CONFIGURABLE SETTINGS | ||
Setting | Label | Position |
Tri-state disabled | JP4 | Pins 2 & 3 closed |
Tri-state enabled | JP4 | Pins 1 & 2 closed |
INTERRUPT | |
Setting | JP1 |
IRQ2 | Pins 9 & 10 closed |
IRQ3 | Pins 7 & 8 closed |
IRQ4 | Pins 4 & 7 closed |
IRQ5 | Pins 6 & 7 closed |
Note:The settings for IRQ4 and IRQ5 may only be set with a wire-wrapping tool. |
DMA CHANNEL | |
Setting | JP1 |
DMA1 | Pins 11 & 12, 13 & 14 closed |
DMA3 | Pins 15 & 16, 17 & 18 closed |
BASE I/O ADDRESS | ||||
Setting | JP3/A | JP3/B | JP3/C | JP3/D |
280h | Open | Closed | Open | Closed |
290h | Closed | Open | Open | Closed |
380h | Open | Closed | Closed | Open |
390h | Closed | Open | Closed | Open |
BOOT ROM ADDRESS | |||||
Setting | JP2/A | JP2/B | JP2/C | JP2/D | JP2/E |
D0000h | Closed | Open | Open | Open | Open |
D2000h | Open | Closed | Open | Open | Open |
D4000h | Open | Open | Closed | Open | Open |
D6000h | Open | Open | Open | Closed | Open |
Disabled | Open | Open | Open | Open | Closed |
NODE ADDRESS | ||||||||
Setting | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/5 | SW1/6 | SW1/7 | SW1/8 |
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. SW1/1 is the Most Significant Bit and switch SW1/8 is the Least Significant Bit. The switches have the following decimal values: SW1/1=128, SW1/2=64, SW1/3=32, SW1/4=16, SW1/5=8, SW1/6=4, SW1/7=2, SW1/8=1. Turn off the switches and add the values of the switches that are off to obtain the correct node ID. (Off=0, On=1)Node address 0 is reserved and should not be used. |