Intermec 6640 Technical Reference page 35

SECTION 2
" NOTE:
LPT Port:
"
Mode:
"
Bidirectional
Enhanced Parallel (EPP)
Extended Capabilities (ECP)
Note EPP and ECP are about ten times faster than the
older Centronics standard.
When the external floppy is attached, this port mode is ignored.
However, the port itself must be enabled. Once the floppy drive is
removed, the port mode is reset.
Base I/O address:
"
(Read Only)
Press the [Esc] key or tap the Exit Submenu" item to
return to the Advanced" menu.
(default)
(default)
6640 Mobile Computer Technical Reference
CMOS Setup
2-9