cec —
IEEE488 GPIB controller boards
cec* at isa? port 0x2b8 irq 5 drq 1
gpib* at cec?
The cec driver supports GPIB (IEEE488) controller boards
  based on the NEC uPD7210 GPIB controller chip. The following boards are
  supported:
  - Capital Equipment Corp. IEEE488 board
- Keithley GPIB boards
The following GPIB boards are similar and support should be
    available reasonably easily:
  - HAMEG HO-80 IEEE488 board
- National Instruments PCII board
- Measurement Computing (Computer Boards) ISA GPIB boards
Thecec driver appeared in NetBSD
  2.0.