|
From: | David Kelly |
Subject: | Re: [avr-chat] Avrdude and JTAG / Dragon... |
Date: | Mon, 2 Mar 2009 20:21:49 -0600 |
On Mar 2, 2009, at 6:30 PM, Russell Shaw wrote:
How does a 10-pin motherboard header translate to a 25 pin parallel port?They often have a 10-pin header on the motherboard for connecting an rs-232 connector and parallel port.http://www.interfacebus.com/Design_Connector_Parallel_PC_Port.htmlBecause it's morning, i didn't word it right to say that it's only thers-232 that's 10 pins. The parallel one has more. I added a DB-9 rs-232and an lpt port to my pc using a cable and back-connectors from an old junk pc. Motherboard is a P5E-V HDMI.
One caution: there are two different pinouts used for 10 pin asynchronous serial ports on PC motherboards and serial cards. Only one uses an easy ribbon cable connection from DB9 to 10-pin header. IIRC the other literally used pin 1 to 1, 2 to 2, 3 to 3 ... and had to have each line hand connected to the DB9 or DB25.
-- David Kelly N4HHE, address@hidden ======================================================================== Whom computers would destroy, they must first drive mad.
[Prev in Thread] | Current Thread | [Next in Thread] |