To load use the Western Digital 8003 packet driver with PC-210: To load in the packet driver use the following syntax: WD8003E where: this is the software interrupt at which to load the packet driver. It must be in the range 0x60 to 0x80. The PC/TCP kernel, by default, is loaded at interrupt 0x61 (so don't load the packet driver there!) this specifies the hardware interrupt request level (IRQ) assigned to the WD8003 card through jumper W2 on the card. Factory default is IRQ 3 (jumper W2 is set to 9). the base I/O address of the WD8003. This value must match the unique 32 byte I/O space selected by jumpers W1. Factory default is 280h (jumpers 4, 6, and 10 of W1 set). this specifies the RAM buffer address. The factory setting is C4000. Consult the WD8003 manual for information on how to change this setting. Example: the following command line loads the Wd8003 packet driver at software interrupt 60h, IRQ 2, base I/O 280h, and base memory C4000h: wd8003e 0x60 0x02 0x280 0xc400 Note the placement of 0x prior to the parameters. After the packet driver is loaded, the PC/TCP kernel ethdrv.exe may be run. The PC is then ready for PC/TCP communications.