On Wed, 15 Dec 1999, Tony Duell wrote:
DA15 (PC joystick), MAU ethernet, etc
DA26 (Never seen it used)
DB25 (Standard RS232, PC printer port)
DB44 (Never seen it used)
DC37 (PC external floppy disk, Canon CX-VDO interface)
DC62 (IBM PC expansion cabinet)
DD50 (Sun SCSI)
DE9 (PC/AT serial port, Atari joystick, etc)
DE15 (VGA monitor)
You forgot DE3 (aka ATP).