[ltp] r50e: ttyS0 is a NS16550A
Richard Neill
linux-thinkpad@linux-thinkpad.org
Fri, 13 Jan 2006 22:13:19 +0000
Alex Deucher wrote:
> On 1/13/06, Dan Jacobson <jidanni@jidanni.org> wrote:
>
>>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?
>
>
> the chipset could support one if it were wired up.
>
> Alex
You might find that a docking station/port replicator would help. These
are about $15 on ebay, and have the extra advantage of acting as a stand
for typing.
Alternatively, cheap USB-serial convertors are available for about $20,
and Linux will see these as /dev/ttyUSB0
Richard