[ltp] r50e: ttyS0 is a NS16550A

[Dan Jacobson]

I've always wanted a serial port on the r50e.
I discovered if I [guess to] disable power saving, one appears?:
# egrep 'Kernel command line|tty' /var/log/kern.log|cut -c 34-
Kernel command line: BOOT_IMAGE=2.6.12-1-686 ro root=301
Kernel command line: BOOT_IMAGE=12NoPowSav ro root=301 noacpi noapic
  acpi=off apm=off
ttyS0 at I/O 0x3f8 (irq = 4) is a NS16550A
Kernel command line: BOOT_IMAGE=2.6.12-1-686 ro root=301

(The r50e has no infrared.)
Can I somehow make the parallel port into a serial port?