As with other classes of devices, Ersatz-11 uses a device-independent interface to attach any supported PC network interface type as the physical side of any supported PDP-11 network interface type. Each interface is created using a one-line ASSIGN command in the E11.INI initialization text file. E11 can optionally perform filtering based on Ethernet protocol numbers so that the PDP-11 operating system will not be swamped by broadcast traffic intended for other systems. Note that while real PDP-11 network interfaces were limited to 10 MBPS Ethernet, E11 will work with the newer high-speed Ethernet interfaces.
E11 needs the (free) WinPcap package to perform raw Ethernet I/O
E11's network driver requires version 2.2 or later of the Linux kernel
dev name | controller types | description |
---|---|---|
NI: | Interlan NI1010A/NI2010A | Unibus/Q-bus Ethernet port |
XE:/NU: | DEUNA, DELUA | Unibus Ethernet port |
XH:/NQ: | DEQNA, DELQA | Q-bus Ethernet port |
As of V7.0, Ersatz-11 also emulates synchronous ports which implement DEC's proprietary DDCMP protocol in microcode or firmware. E11's internal DDCMP layer can use any supported serial device for the physical connection, and will interconnect with DEC's own asynchronous DDCMP drivers.
dev name | controller types | description |
---|---|---|
XM: | DMC11, DMR11 | Unibus synchronous DDCMP port |